Mercurial > hg > nginx-site
annotate xml/en/docs/http/ngx_http_upstream_module.xml @ 988:a060ab6fb4be
Fixed grammar.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Thu, 26 Sep 2013 11:25:40 +0400 |
parents | edd505634357 |
children | 35ae9ded0465 |
rev | line source |
---|---|
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1 <?xml version="1.0"?> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
2 |
580
be54c443235a
Added copyright markers to documentation sources.
Ruslan Ermilov <ru@nginx.com>
parents:
566
diff
changeset
|
3 <!-- |
be54c443235a
Added copyright markers to documentation sources.
Ruslan Ermilov <ru@nginx.com>
parents:
566
diff
changeset
|
4 Copyright (C) Igor Sysoev |
be54c443235a
Added copyright markers to documentation sources.
Ruslan Ermilov <ru@nginx.com>
parents:
566
diff
changeset
|
5 Copyright (C) Nginx, Inc. |
be54c443235a
Added copyright markers to documentation sources.
Ruslan Ermilov <ru@nginx.com>
parents:
566
diff
changeset
|
6 --> |
be54c443235a
Added copyright markers to documentation sources.
Ruslan Ermilov <ru@nginx.com>
parents:
566
diff
changeset
|
7 |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
9 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
10 <module name="Module ngx_http_upstream_module" |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
11 link="/en/docs/http/ngx_http_upstream_module.html" |
589 | 12 lang="en" |
987
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
13 rev="11"> |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
14 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
15 <section id="summary"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
16 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
17 <para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
18 The <literal>ngx_http_upstream_module</literal> module |
966 | 19 is used to define groups of servers that can be referenced |
20 by the <link doc="ngx_http_proxy_module.xml" id="proxy_pass"/>, | |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
21 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_pass"/>, and |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
22 <link doc="ngx_http_memcached_module.xml" id="memcached_pass"/> directives. |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
23 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
24 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
25 </section> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
26 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
27 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
28 <section id="example" name="Example Configuration"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
29 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
30 <para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
31 <example> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
32 upstream <emphasis>backend</emphasis> { |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
33 server backend1.example.com weight=5; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
34 server backend2.example.com:8080; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
35 server unix:/tmp/backend3; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
36 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
37 server backup1.example.com:8080 backup; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
38 server backup2.example.com:8080 backup; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
39 } |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
40 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
41 server { |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
42 location / { |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
43 proxy_pass http://<emphasis>backend</emphasis>; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
44 } |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
45 } |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
46 </example> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
47 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
48 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
49 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
50 Dynamically configurable group, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
51 available as part of our <commercial_version/> only: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
52 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
53 upstream <emphasis>appservers</emphasis> { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
54 zone appservers 64k; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
55 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
56 server appserv1.example.com weight=5; |
955
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
57 server appserv2.example.com:8080 fail_timeout=5s slow_start=30s; |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
58 server 192.0.2.1 max_fails=3; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
59 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
60 server reserve1.example.com:8080 backup; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
61 server reserve2.example.com:8080 backup; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
62 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
63 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
64 server { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
65 location / { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
66 proxy_pass http://<emphasis>appservers</emphasis>; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
67 health_check; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
68 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
69 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
70 location /upstream_conf { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
71 upstream_conf; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
72 allow 127.0.0.1; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
73 deny all; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
74 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
75 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
76 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
77 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
78 |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
79 </section> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
80 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
81 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
82 <section id="directives" name="Directives"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
83 |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
84 <directive name="upstream"> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
85 <syntax block="yes"><value>name</value></syntax> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
86 <default/> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
87 <context>http</context> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
88 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
89 <para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
90 Defines a group of servers. |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
91 Servers can listen on different ports. |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
92 In addition, servers listening on TCP and UNIX-domain sockets |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
93 can be mixed. |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
94 </para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
95 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
96 <para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
97 Example: |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
98 <example> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
99 upstream backend { |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
100 server backend1.example.com weight=5; |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
101 server 127.0.0.1:8080 max_fails=3 fail_timeout=30s; |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
102 server unix:/tmp/backend3; |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
103 } |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
104 </example> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
105 </para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
106 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
107 <para> |
966 | 108 By default, requests are distributed between the servers using a |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
109 weighted round-robin balancing method. |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
110 In the above example, each 7 requests will be distributed as follows: |
966 | 111 5 requests go to <literal>backend1.example.com</literal> |
112 and one request to each of the second and third servers. | |
113 If an error occurs during communication with a server, the request will | |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
114 be passed to the next server, and so on until all of the functioning |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
115 servers will be tried. |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
116 If a successful response could not be obtained from any of the servers, |
966 | 117 the client will receive the result of the communication with the last server. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
118 </para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
119 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
120 </directive> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
121 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
122 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
123 <directive name="server"> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
124 <syntax><value>address</value> [<value>parameters</value>]</syntax> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
125 <default/> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
126 <context>upstream</context> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
127 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
128 <para> |
966 | 129 Defines the <value>address</value> and other <value>parameters</value> |
130 of a server. | |
131 The address can be specified as a domain name or IP address, | |
132 with an optional port, or as a UNIX-domain socket path | |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
133 specified after the “<literal>unix:</literal>” prefix. |
966 | 134 If a port is not specified, the port 80 is used. |
135 A domain name that resolves to several IP addresses defines | |
136 multiple servers at once. | |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
137 </para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
138 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
139 <para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
140 The following parameters can be defined: |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
141 <list type="tag"> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
142 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
143 <tag-name><literal>weight</literal>=<value>number</value></tag-name> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
144 <tag-desc> |
966 | 145 sets the weight of the server, by default, 1. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
146 </tag-desc> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
147 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
148 <tag-name><literal>max_fails</literal>=<value>number</value></tag-name> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
149 <tag-desc> |
966 | 150 sets the number of unsuccessful attempts to communicate with the server |
151 that should happen in the duration set by the <literal>fail_timeout</literal> | |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
152 parameter to consider the server unavailable for a duration also set by the |
966 | 153 <literal>fail_timeout</literal> parameter. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
154 By default, the number of unsuccessful attempts is set to 1. |
966 | 155 The zero value disables the accounting of attempts. |
942
ba3d6ade3513
Elaborate on upstream server failures.
Ruslan Ermilov <ru@nginx.com>
parents:
917
diff
changeset
|
156 What is considered an unsuccessful attempt is defined by the |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
157 <link doc="ngx_http_proxy_module.xml" id="proxy_next_upstream"/>, |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
158 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_next_upstream"/>, and |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
159 <link doc="ngx_http_memcached_module.xml" id="memcached_next_upstream"/> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
160 directives. |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
161 </tag-desc> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
162 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
163 <tag-name><literal>fail_timeout</literal>=<value>time</value></tag-name> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
164 <tag-desc> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
165 sets |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
166 <list type="bullet"> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
167 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
168 <listitem> |
966 | 169 the time during which the specified number of unsuccessful attempts to |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
170 communicate with the server should happen to consider the server unavailable; |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
171 </listitem> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
172 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
173 <listitem> |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
174 and the period of time the server will be considered unavailable. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
175 </listitem> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
176 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
177 </list> |
966 | 178 By default, the parameter is set to 10 seconds. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
179 </tag-desc> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
180 |
955
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
181 <tag-name><literal>slow_start</literal>=<value>time</value></tag-name> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
182 <tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
183 sets the <value>time</value> during which the server will recover its weight |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
184 from zero to a nominal value, when unhealthy server becomes |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
185 <link id="health_check">healthy</link>, |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
186 or when the server becomes available after a period of time |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
187 it was considered unavailable. |
955
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
188 Default value is zero, i.e. slow start is disabled. |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
189 <note> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
190 This functionality is available as part of our <commercial_version/> only. |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
191 </note> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
192 </tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
193 |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
194 <tag-name><literal>backup</literal></tag-name> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
195 <tag-desc> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
196 marks the server as a backup server. |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
197 It will be passed requests when the primary servers are unavailable. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
198 </tag-desc> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
199 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
200 <tag-name><literal>down</literal></tag-name> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
201 <tag-desc> |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
202 marks the server as permanently unavailable; used along with |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
203 the <link id="ip_hash"/> directive. |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
204 </tag-desc> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
205 |
987
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
206 <tag-name><literal>route</literal>=<value>string</value></tag-name> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
207 <tag-desc> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
208 sets the server route name. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
209 <note> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
210 This functionality is available as part of our <commercial_version/> only. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
211 </note> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
212 </tag-desc> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
213 |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
214 </list> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
215 </para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
216 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
217 <para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
218 Example: |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
219 <example> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
220 upstream backend { |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
221 server backend1.example.com weight=5; |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
222 server 127.0.0.1:8080 max_fails=3 fail_timeout=30s; |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
223 server unix:/tmp/backend3; |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
224 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
225 server backup1.example.com:8080 backup; |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
226 } |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
227 </example> |
969
7c542520b8f7
Added note about behavior of a single server in an upstream.
Vladimir Homutov <vl@nginx.com>
parents:
968
diff
changeset
|
228 |
7c542520b8f7
Added note about behavior of a single server in an upstream.
Vladimir Homutov <vl@nginx.com>
parents:
968
diff
changeset
|
229 <note> |
7c542520b8f7
Added note about behavior of a single server in an upstream.
Vladimir Homutov <vl@nginx.com>
parents:
968
diff
changeset
|
230 If there is only a single server in a group, <literal>max_fails</literal>, |
7c542520b8f7
Added note about behavior of a single server in an upstream.
Vladimir Homutov <vl@nginx.com>
parents:
968
diff
changeset
|
231 <literal>fail_timeout</literal> and <literal>slow_start</literal> parameters |
7c542520b8f7
Added note about behavior of a single server in an upstream.
Vladimir Homutov <vl@nginx.com>
parents:
968
diff
changeset
|
232 are ignored, and such a server will never be considered unavailable. |
7c542520b8f7
Added note about behavior of a single server in an upstream.
Vladimir Homutov <vl@nginx.com>
parents:
968
diff
changeset
|
233 </note> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
234 </para> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
235 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
236 </directive> |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
237 |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
238 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
239 <directive name="zone"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
240 <syntax><value>name</value> <value>size</value></syntax> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
241 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
242 <context>upstream</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
243 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
244 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
245 Makes the group dynamically configurable. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
246 Defines the <value>name</value> and <value>size</value> of a shared |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
247 memory zone that keeps group’s configuration and run-time state that are |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
248 shared between worker processes. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
249 Such groups allow to add, remove, and modify servers at run time. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
250 The configuration is accessible via a special location handled by |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
251 <link id="upstream_conf"/>. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
252 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
253 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
254 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
255 <note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
256 This directive is available as part of our <commercial_version/> only. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
257 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
258 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
259 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
260 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
261 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
262 |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
263 <directive name="ip_hash"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
264 <syntax/> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
265 <default/> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
266 <context>upstream</context> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
267 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
268 <para> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
269 Specifies that a group should use a load balancing method where requests |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
270 are distributed between servers based on client IP addresses. |
542
a9e6a8613534
Documented IPv6 support in ip_hash.
Ruslan Ermilov <ru@nginx.com>
parents:
533
diff
changeset
|
271 The first three octets of the client IPv4 address, or the entire IPv6 address, |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
272 are used as a hashing key. |
966 | 273 The method ensures that requests from the same client will always be |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
274 passed to the same server except when this server is unavailable. |
966 | 275 In the latter case client requests will be passed to another server. |
276 Most probably, it will always be the same server as well. | |
542
a9e6a8613534
Documented IPv6 support in ip_hash.
Ruslan Ermilov <ru@nginx.com>
parents:
533
diff
changeset
|
277 <note> |
566 | 278 IPv6 addresses are supported starting from versions 1.3.2 and 1.2.2. |
542
a9e6a8613534
Documented IPv6 support in ip_hash.
Ruslan Ermilov <ru@nginx.com>
parents:
533
diff
changeset
|
279 </note> |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
280 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
281 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
282 <para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
283 If one of the servers needs to be temporarily removed, it should |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
284 be marked with the <literal>down</literal> parameter in |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
285 order to preserve the current hashing of client IP addresses. |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
286 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
287 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
288 <para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
289 Example: |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
290 <example> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
291 upstream backend { |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
292 ip_hash; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
293 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
294 server backend1.example.com; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
295 server backend2.example.com; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
296 server backend3.example.com <emphasis>down</emphasis>; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
297 server backend4.example.com; |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
298 } |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
299 </example> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
300 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
301 |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
302 <para> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
303 <note> |
966 | 304 Until versions 1.3.1 and 1.2.2, it was not possible to specify a weight for |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
305 servers using the <literal>ip_hash</literal> load balancing method. |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
306 </note> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
307 </para> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
308 |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
309 </directive> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
310 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
311 |
316
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
312 <directive name="keepalive"> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
313 <syntax><value>connections</value></syntax> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
314 <default/> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
315 <context>upstream</context> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
316 <appeared-in>1.1.4</appeared-in> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
317 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
318 <para> |
966 | 319 Activates the cache for connections to upstream servers. |
316
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
320 </para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
321 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
322 <para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
323 The <value>connections</value> parameter sets the maximum number of |
966 | 324 idle keepalive connections to upstream servers that are preserved in |
325 the cache of each worker process. | |
654
841118e33f41
Refined the text about cache of connections to upstream servers.
Ruslan Ermilov <ru@nginx.com>
parents:
589
diff
changeset
|
326 When this number is exceeded, the least recently used connections |
841118e33f41
Refined the text about cache of connections to upstream servers.
Ruslan Ermilov <ru@nginx.com>
parents:
589
diff
changeset
|
327 are closed. |
316
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
328 <note> |
966 | 329 It should be particularly noted that the <literal>keepalive</literal> directive |
330 does not limit the total number of connections to upstream servers | |
331 that an nginx worker process can open. | |
332 The <value>connections</value> parameter should be set to a number small enough | |
333 to let upstream servers process new incoming connections as well. | |
316
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
334 </note> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
335 </para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
336 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
337 <para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
338 Example configuration of memcached upstream with keepalive connections: |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
339 <example> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
340 upstream memcached_backend { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
341 server 127.0.0.1:11211; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
342 server 10.0.0.2:11211; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
343 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
344 keepalive 32; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
345 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
346 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
347 server { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
348 ... |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
349 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
350 location /memcached/ { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
351 set $memcached_key $uri; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
352 memcached_pass memcached_backend; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
353 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
354 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
355 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
356 </example> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
357 </para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
358 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
359 <para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
360 For HTTP, the <link doc="ngx_http_proxy_module.xml" id="proxy_http_version"/> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
361 directive should be set to “<literal>1.1</literal>” |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
362 and the <header>Connection</header> header field should be cleared: |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
363 <example> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
364 upstream http_backend { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
365 server 127.0.0.1:8080; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
366 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
367 keepalive 16; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
368 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
369 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
370 server { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
371 ... |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
372 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
373 location /http/ { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
374 proxy_pass http://http_backend; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
375 proxy_http_version 1.1; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
376 proxy_set_header Connection ""; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
377 ... |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
378 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
379 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
380 </example> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
381 </para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
382 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
383 <para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
384 <note> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
385 Alternatively, HTTP/1.0 persistent connections can be used by passing the |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
386 <header>Connection: Keep-Alive</header> header field to an upstream server, |
966 | 387 though this method is not recommended. |
316
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
388 </note> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
389 </para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
390 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
391 <para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
392 For FastCGI servers, it is required to set |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
393 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_keep_conn"/> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
394 for keepalive connections to work: |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
395 <example> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
396 upstream fastcgi_backend { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
397 server 127.0.0.1:9000; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
398 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
399 keepalive 8; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
400 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
401 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
402 server { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
403 ... |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
404 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
405 location /fastcgi/ { |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
406 fastcgi_pass fastcgi_backend; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
407 fastcgi_keep_conn on; |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
408 ... |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
409 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
410 } |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
411 </example> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
412 </para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
413 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
414 <para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
415 <note> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
416 When using load balancer methods other than the default |
966 | 417 round-robin method, it is necessary to activate them before |
316
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
418 the <literal>keepalive</literal> directive. |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
419 </note> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
420 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
421 <note> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
422 SCGI and uwsgi protocols do not have a notion of keepalive connections. |
316
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
423 </note> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
424 </para> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
425 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
426 </directive> |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
427 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
Ruslan Ermilov <ru@nginx.com>
parents:
293
diff
changeset
|
428 |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
429 <directive name="least_conn"> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
430 <syntax/> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
431 <default/> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
432 <context>upstream</context> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
433 <appeared-in>1.3.1</appeared-in> |
566 | 434 <appeared-in>1.2.2</appeared-in> |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
435 |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
436 <para> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
437 Specifies that a group should use a load balancing method where a request |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
438 is passed to the server with the least number of active connections, |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
Ruslan Ermilov <ru@nginx.com>
parents:
316
diff
changeset
|
439 taking into account weights of servers. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
440 If there are several such servers, they are tried using a |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
441 weighted round-robin balancing method. |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
442 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
443 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
444 </directive> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
445 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
446 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
447 <directive name="health_check"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
448 <syntax> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
449 [<literal>interval=</literal><value>time</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
450 <!-- |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
451 [<literal>jitter=</literal><value>time</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
452 --> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
453 [<literal>fails=</literal><value>number</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
454 [<literal>passes=</literal><value>number</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
455 [<literal>uri=</literal><value>uri</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
456 [<literal>match=</literal><value>name</value>]</syntax> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
457 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
458 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
459 <context>location</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
460 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
461 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
462 Enables periodic health checks of the servers in a |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
463 <link id="upstream">group</link> referenced in the surrounding location. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
464 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
465 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
466 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
467 The following optional parameters are supported: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
468 <list type="bullet"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
469 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
470 <listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
471 <literal>interval</literal> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
472 sets the interval between two consecutive health checks, |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
473 by default, 5 seconds; |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
474 </listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
475 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
476 <listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
477 <literal>fails</literal> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
478 sets the number of consecutive failed health checks of a particular server |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
479 after which this server will be considered unhealthy, |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
480 by default, 1; |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
481 </listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
482 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
483 <listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
484 <literal>passes</literal> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
485 sets the number of consecutive passed health checks of a particular server |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
486 after which the server will be considered healthy, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
487 by default, 1; |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
488 </listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
489 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
490 <listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
491 <literal>uri</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
492 defines the URI used in health check requests, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
493 by default, “<literal>/</literal>”; |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
494 </listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
495 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
496 <listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
497 <literal>match</literal> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
498 specifies the <literal>match</literal> block configuring the tests that a |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
499 response should pass in order for a health check to pass; |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
500 by default, the response should have status code 2xx or 3xx. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
501 </listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
502 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
503 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
504 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
505 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
506 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
507 For example, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
508 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
509 location / { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
510 proxy_pass http://backend; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
511 health_check; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
512 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
513 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
514 will send “<literal>/</literal>” requests to each |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
515 server in the <literal>backend</literal> group every five seconds. |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
516 If any communication error or timeout occurs, or a |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
517 proxied server responds with the status code other than |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
518 2xx or 3xx, the health check will fail, and the server will |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
519 be considered unhealthy. |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
520 Client requests are not passed to unhealthy servers. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
521 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
522 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
523 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
524 Health checks can be configured to test the status code of a response, |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
525 presence of certain header fields and their values, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
526 and the body contents. |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
527 Tests are configured separately using the <link id="match"/> directive |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
528 and referenced in the <literal>match</literal> parameter. |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
529 For example: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
530 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
531 http { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
532 server { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
533 ... |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
534 location / { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
535 proxy_pass http://backend; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
536 health_check match=welcome; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
537 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
538 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
539 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
540 match welcome { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
541 status 200; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
542 header Content-Type = text/html; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
543 body ~ "Welcome to nginx!"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
544 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
545 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
546 </example> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
547 This configuration tells that for a health check to pass, the response to a |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
548 health check request should succeed, |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
549 have status 200, content type “<literal>text/html</literal>”, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
550 and contain “<literal>Welcome to nginx!</literal>” in the body. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
551 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
552 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
553 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
554 The server group must reside in the <link id="zone">shared memory</link>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
555 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
556 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
557 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
558 If several health checks are defined for the same group of servers, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
559 a single failure of any check will make the corresponding server be |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
560 considered unhealthy. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
561 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
562 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
563 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
564 <note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
565 This directive is available as part of our <commercial_version/> only. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
566 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
567 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
568 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
569 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
570 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
571 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
572 <directive name="match"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
573 <syntax block="yes"><value>name</value></syntax> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
574 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
575 <context>http</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
576 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
577 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
578 Defines the named test set used to verify responses to health check requests. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
579 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
580 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
581 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
582 The following items can be tested in a response: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
583 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
584 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
585 <tag-name><literal>status 200;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
586 <tag-desc>status is 200</tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
587 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
588 <tag-name><literal>status ! 500;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
589 <tag-desc>status is not 500</tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
590 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
591 <tag-name><literal>status 200 204;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
592 <tag-desc>status is 200 or 204</tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
593 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
594 <tag-name><literal>status ! 301 302;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
595 <tag-desc>status is neither 301 nor 302</tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
596 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
597 <tag-name><literal>status 200-399;</literal></tag-name> |
966 | 598 <tag-desc>status is in the range from 200 to 399</tag-desc> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
599 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
600 <tag-name><literal>status ! 400-599;</literal></tag-name> |
966 | 601 <tag-desc>status is not in the range from 400 to 599</tag-desc> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
602 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
603 <tag-name><literal>status 301-303 307;</literal></tag-name> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
604 <tag-desc>status is either 301, 302, 303, or 307</tag-desc> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
605 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
606 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
607 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
608 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
609 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
610 <tag-name><literal>header Content-Type = text/html;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
611 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
612 header contains <header>Content-Type</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
613 with value <literal>text/html</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
614 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
615 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
616 <tag-name><literal>header Content-Type != text/html;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
617 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
618 header contains <header>Content-Type</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
619 with value other than <literal>text/html</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
620 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
621 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
622 <tag-name><literal>header Connection ~ close;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
623 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
624 header contains <header>Connection</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
625 with value matching regular expression <literal>close</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
626 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
627 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
628 <tag-name><literal>header Connection !~ close;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
629 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
630 header contains <header>Connection</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
631 with value not matching regular expression <literal>close</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
632 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
633 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
634 <tag-name><literal>header Host;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
635 <tag-desc>header contains <header>Host</header></tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
636 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
637 <tag-name><literal>header ! X-Accel-Redirect;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
638 <tag-desc>header lacks <header>X-Accel-Redirect</header></tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
639 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
640 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
641 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
642 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
643 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
644 <tag-name><literal>body ~ "Welcome to nginx!";</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
645 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
646 body matches regular expression “<literal>Welcome to nginx!</literal>” |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
647 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
648 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
649 <tag-name><literal>body !~ "Welcome to nginx!";</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
650 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
651 body does not match regular expression “<literal>Welcome to nginx!</literal>” |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
652 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
653 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
654 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
655 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
656 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
657 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
658 If several tests are specified, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
659 the response matches only if it matches all tests. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
660 <note> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
661 Only the first 256k of the response body are examined. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
662 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
663 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
664 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
665 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
666 Examples: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
667 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
668 # status is 200, content type is "text/html", |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
669 # and body contains "Welcome to nginx!" |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
670 match welcome { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
671 status 200; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
672 header Content-Type = text/html; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
673 body ~ "Welcome to nginx!"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
674 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
675 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
676 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
677 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
678 # status is not one of 301, 302, 303, or 307, and header does not have "Refresh:" |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
679 match not_redirect { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
680 status ! 301-303 307; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
681 header ! Refresh; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
682 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
683 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
684 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
685 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
686 # status ok and not in maintenance mode |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
687 match server_ok { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
688 status 200-399; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
689 body !~ "maintenance mode"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
690 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
691 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
692 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
693 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
694 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
695 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
696 <note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
697 This directive is available as part of our <commercial_version/> only. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
698 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
699 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
700 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
701 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
702 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
703 |
987
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
704 <directive name="sticky"> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
705 <syntax><literal>route</literal> <value>variable</value> ...</syntax> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
706 <default/> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
707 <context>upstream</context> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
708 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
709 <para> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
710 Enables session affinity, which causes requests that contain route to the |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
711 server to be passed to this server in a group of servers. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
712 Example: |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
713 <example> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
714 map $cookie_JSESSIONID $route_cookie { |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
715 ~.+\.(?P<route>\w+)$ $route; |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
716 } |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
717 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
718 map $request_uri $route_uri { |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
719 ~jsessionid=.+\.(?P<route>\w+)$ $route; |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
720 } |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
721 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
722 upstream backend { |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
723 server backend1.example.com route=a; |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
724 server backend2.example.com route=b; |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
725 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
726 sticky route $route_cookie $route_uri; |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
727 } |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
728 </example> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
729 Here, the “<literal>JSESSIONID</literal>” cookie is inspected for a server |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
730 route first, and if not found, the route from the URI is used. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
731 </para> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
732 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
733 <para> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
734 A request that does not contain a server route is passed to the server |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
735 selected by the configured balancing method. |
988 | 736 If a request cannot be processed by the designated server, the new server |
737 is selected as if the client has not been bound yet. | |
987
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
738 </para> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
739 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
740 <para> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
741 The directive specifies variables that are examined for the route. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
742 This route is compared with routes specified in the <link id="server"/> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
743 directives. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
744 The first non-empty variable is used for server search. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
745 </para> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
746 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
747 <para> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
748 <note> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
749 This directive is available as part of our <commercial_version/> only. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
750 </note> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
751 </para> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
752 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
753 </directive> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
754 |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
755 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
756 <directive name="sticky_cookie_insert"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
757 <syntax><value>name</value> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
758 [<literal>expires=</literal><value>time</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
759 [<literal>domain=</literal><value>host</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
760 [<literal>path=</literal><value>path</value>]</syntax> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
761 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
762 <context>upstream</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
763 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
764 <para> |
962
f3754c623e6b
Minor editing of the stiky_cookie_insert directive.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
960
diff
changeset
|
765 Enables session affinity, which causes requests from the same client to be |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
766 passed to the same server in a group of servers. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
767 Example: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
768 <example> |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
769 upstream backend { |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
770 server backend1.example.com; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
771 server backend2.example.com; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
772 |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
773 sticky_cookie_insert srv_id expires=1h domain=example.com path=/; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
774 } |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
775 </example> |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
776 </para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
777 |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
778 <para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
779 A request that comes from a client not yet bound to a particular server |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
780 is passed to the server selected by the configured balancing method. |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
781 Further requests from the same client are passed to the same server. |
988 | 782 If a request cannot be processed by the designated server, the new server |
783 is selected as if the client has not been bound yet. | |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
784 </para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
785 |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
786 <para> |
962
f3754c623e6b
Minor editing of the stiky_cookie_insert directive.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
960
diff
changeset
|
787 Information about the bound server is kept in an HTTP cookie. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
788 The first parameter sets the name of the cookie to be inserted or inspected. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
789 Additional parameters may be as follows: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
790 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
791 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
792 <tag-name><literal>expires</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
793 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
794 Sets the time for which a browser should keep the cookie. |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
795 The parameter <literal>max</literal> will cause the cookie to expire on |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
796 “<literal>31 Dec 2037 23:55:55 GMT</literal>”. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
797 This is the maximum time understood by old browsers. |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
798 If the parameter is not specified, it will cause the cookie to expire at |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
799 the end of a browser session. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
800 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
801 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
802 <tag-name><literal>domain</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
803 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
804 Defines the domain for which the cookie is set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
805 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
806 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
807 <tag-name><literal>path</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
808 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
809 Defines the path for which the cookie is set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
810 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
811 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
812 </list> |
981 | 813 If any parameters are omitted, the corresponding cookie fields are not set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
814 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
815 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
816 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
817 <note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
818 This directive is available as part of our <commercial_version/> only. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
819 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
820 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
821 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
822 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
823 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
824 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
825 <directive name="upstream_conf"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
826 <syntax/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
827 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
828 <context>location</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
829 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
830 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
831 Turns on the HTTP interface of upstream configuration in the surrounding |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
832 location. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
833 Access to this location should be |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
834 <link doc="ngx_http_core_module.xml" id="satisfy">limited</link>. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
835 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
836 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
837 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
838 Configuration commands can be used to: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
839 <list type="bullet"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
840 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
841 <listitem>view all primary or backup servers in a group;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
842 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
843 <listitem>view an individual server;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
844 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
845 <listitem>modify an individual server;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
846 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
847 <listitem>add a new server (see the note below);</listitem> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
848 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
849 <listitem>remove an individual server.</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
850 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
851 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
852 <note> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
853 As noted in the <link id="server"/> directive, specifying a server |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
854 as a domain name may result in several servers being added to the group. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
855 Since addresses in a group are not required to be unique, individual |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
856 servers in a group can be uniquely referenced to only by their ID. |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
857 IDs are assigned automatically and shown on viewing of the group configuration. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
858 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
859 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
860 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
861 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
862 A configuration command consists of parameters passed as request arguments, |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
863 for example: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
864 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
865 http://127.0.0.1/upstream_conf?upstream=appservers |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
866 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
867 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
868 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
869 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
870 The following parameters are supported: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
871 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
872 <list type="tag" compact="no"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
873 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
874 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
875 <literal>upstream=</literal><value>name</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
876 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
877 Selects a group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
878 This parameter is mandatory. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
879 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
880 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
881 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
882 <literal>backup=</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
883 </tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
884 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
885 If not set, selects primary servers in the group. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
886 If set, selects backup servers in the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
887 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
888 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
889 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
890 <literal>id=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
891 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
892 Selects an individual primary or backup server in the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
893 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
894 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
895 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
896 <literal>remove=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
897 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
898 Removes an individual primary or backup server from the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
899 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
900 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
901 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
902 <literal>add=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
903 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
904 Adds a new primary or backup server to the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
905 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
906 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
907 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
908 <literal>server=</literal><value>address</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
909 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
910 Same as the “<literal>address</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
911 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
912 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
913 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
914 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
915 <literal>weight=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
916 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
917 Same as the “<literal>weight</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
918 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
919 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
920 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
921 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
922 <literal>max_fails=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
923 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
924 Same as the “<literal>max_fails</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
925 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
926 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
927 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
928 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
929 <literal>fail_timeout=</literal><value>time</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
930 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
931 Same as the “<literal>fail_timeout</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
932 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
933 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
934 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
935 <tag-name> |
955
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
936 <literal>slow_start=</literal><value>time</value></tag-name> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
937 <tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
938 Same as the “<literal>slow_start</literal>” parameter |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
939 of the <link id="server"/> directive. |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
940 </tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
941 |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
942 <tag-name> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
943 <literal>down=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
944 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
945 Same as the “<literal>down</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
946 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
947 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
948 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
949 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
950 <literal>up=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
951 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
952 The opposite of the “<literal>down</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
953 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
954 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
955 |
987
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
956 <tag-name> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
957 <literal>route=</literal><value>string</value></tag-name> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
958 <tag-desc> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
959 Same as the “<literal>route</literal>” parameter |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
960 of the <link id="server"/> directive. |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
961 </tag-desc> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
962 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
963 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
964 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
965 The first three parameters select a target the command applies to. |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
966 Without other parameters, the command shows configuration of the selected |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
967 target. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
968 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
969 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
970 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
971 For example, to view the primary servers in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
972 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
973 http://127.0.0.1/upstream_conf?upstream=appservers |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
974 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
975 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
976 To view the backup servers in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
977 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
978 http://127.0.0.1/upstream_conf?upstream=appservers&backup= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
979 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
980 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
981 To view an individual primary server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
982 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
983 http://127.0.0.1/upstream_conf?upstream=appservers&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
984 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
985 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
986 To view an individual backup server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
987 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
988 http://127.0.0.1/upstream_conf?upstream=appservers&backup=&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
989 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
990 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
991 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
992 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
993 To add a new primary or backup server to the group, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
994 specify its address in the “<literal>server=</literal>” parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
995 Without other parameters specified, a server will be added with other |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
996 parameters set to their default values (see the <link id="server"/> directive). |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
997 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
998 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
999 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1000 For example, to add a new primary server to the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1001 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1002 http://127.0.0.1/upstream_conf?add=&upstream=appservers&server=127.0.0.1:8080 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1003 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1004 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1005 To add a new backup server to the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1006 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1007 http://127.0.0.1/upstream_conf?add=&upstream=appservers&backup=&server=127.0.0.1:8080 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1008 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1009 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1010 To add a new primary server to the group, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1011 set its parameters to non-default values |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
1012 and mark it as “<literal>down</literal>”, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1013 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1014 http://127.0.0.1/upstream_conf?add=&upstream=appservers&server=127.0.0.1:8080&weight=2&max_fails=3&fail_timeout=3s&down= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1015 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1016 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1017 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1018 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1019 To remove an individual primary or backup server from the group, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1020 select it with the <literal>id=</literal> parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1021 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1022 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1023 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1024 For example, to remove an individual primary server from the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1025 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1026 http://127.0.0.1/upstream_conf?remove=&upstream=appservers&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1027 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1028 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1029 To remove an individual backup server from the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1030 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1031 http://127.0.0.1/upstream_conf?remove=&upstream=appservers&backup=&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1032 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1033 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1034 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1035 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1036 To modify an individual primary or backup server in the group, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1037 select it with the <literal>id=</literal> parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1038 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1039 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1040 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1041 For example, to modify an individual primary server in the group |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1042 by marking it as “<literal>down</literal>”, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1043 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1044 http://127.0.0.1/upstream_conf?upstream=appservers&id=42&down= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1045 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1046 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1047 To modify the address of an individual backup server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1048 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1049 http://127.0.0.1/upstream_conf?upstream=appservers&backup=&id=42&server=192.0.2.3:8123 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1050 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1051 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1052 To modify other parameters of an individual primary server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1053 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1054 http://127.0.0.1/upstream_conf?upstream=appservers&id=42&max_fails=3&weight=4 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1055 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1056 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1057 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1058 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1059 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1060 <note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1061 This directive is available as part of our <commercial_version/> only. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1062 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1063 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1064 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1065 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1066 |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1067 </section> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1068 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1069 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1070 <section id="variables" name="Embedded Variables"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1071 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1072 <para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1073 The <literal>ngx_http_upstream_module</literal> module |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1074 supports the following embedded variables: |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1075 <list type="tag"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1076 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1077 <tag-name><var>$upstream_addr</var></tag-name> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1078 <tag-desc> |
966 | 1079 keeps the IP address and port of the server, |
1080 or the path to the UNIX-domain socket. | |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1081 If several servers were contacted during request processing, |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1082 their addresses are separated by commas, e.g. |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1083 “<literal>192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock</literal>”. |
966 | 1084 If an internal redirect from one server group to another happens, |
1085 initiated by | |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1086 <header>X-Accel-Redirect</header> or |
966 | 1087 <link doc="ngx_http_core_module.xml" id="error_page"/>, |
1088 then the server addresses from different groups are separated by colons, e.g. | |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1089 “<literal>192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock : 192.168.10.1:80, 192.168.10.2:80</literal>”. |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1090 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1091 |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1092 <tag-name><var>$upstream_cache_status</var></tag-name> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1093 <tag-desc> |
966 | 1094 keeps the status of accessing a response cache (0.8.3). |
1095 The status can be either “<literal>MISS</literal>”, | |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1096 “<literal>BYPASS</literal>”, “<literal>EXPIRED</literal>”, |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1097 “<literal>STALE</literal>”, “<literal>UPDATING</literal>” or |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1098 “<literal>HIT</literal>”. |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1099 </tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1100 |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1101 <tag-name><var>$upstream_response_length</var></tag-name> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1102 <tag-desc> |
966 | 1103 keeps the lengths of responses obtained from the upstream servers (0.7.27); |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1104 lengths are kept in bytes. |
966 | 1105 Several response lengths are separated by commas and colons |
1106 like addresses in the <var>$upstream_addr</var> variable. | |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1107 </tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1108 |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1109 <tag-name><var>$upstream_response_time</var></tag-name> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1110 <tag-desc> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1111 keeps times of responses obtained from upstream servers; |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1112 times are kept in seconds with a milliseconds resolution. |
966 | 1113 Several response times are separated by commas and colons |
1114 like addresses in the <var>$upstream_addr</var> variable. | |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1115 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1116 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1117 <tag-name><var>$upstream_status</var></tag-name> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1118 <tag-desc> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1119 keeps codes of responses obtained from upstream servers. |
966 | 1120 Several response codes are separated by commas and colons |
1121 like addresses in the <var>$upstream_addr</var> variable. | |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1122 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1123 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1124 <tag-name><var>$upstream_http_...</var></tag-name> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1125 <tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1126 keep server response header fields. |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1127 For example, the <header>Server</header> response header field |
966 | 1128 is available through the <var>$upstream_http_server</var> variable. |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1129 The rules of converting header field names to variable names are the same |
966 | 1130 as for the variables that start with the |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1131 “<link doc="ngx_http_core_module.xml" id="variables">$http_</link>” prefix. |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1132 Only the last server’s response header fields are saved. |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1133 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1134 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1135 </list> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1136 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1137 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1138 </section> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1139 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1140 </module> |