Mercurial > hg > nginx-site
annotate xml/en/docs/http/ngx_http_upstream_module.xml @ 1186:8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Tue, 29 Apr 2014 19:27:51 +0400 |
parents | b8f0362f61e5 |
children | 9264fdb6c833 |
rev | line source |
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1 <?xml version="1.0"?> |
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2 |
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3 <!-- |
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4 Copyright (C) Igor Sysoev |
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5 Copyright (C) Nginx, Inc. |
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6 --> |
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7 |
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8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> |
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9 |
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10 <module name="Module ngx_http_upstream_module" |
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11 link="/en/docs/http/ngx_http_upstream_module.html" |
589 | 12 lang="en" |
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13 rev="22"> |
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14 |
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15 <section id="summary"> |
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16 |
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17 <para> |
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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"/>, | |
1181 | 21 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_pass"/>, |
22 <link doc="ngx_http_scgi_module.xml" id="scgi_pass"/>, and | |
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23 <link doc="ngx_http_memcached_module.xml" id="memcached_pass"/> directives. |
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24 </para> |
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25 |
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26 </section> |
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27 |
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28 |
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29 <section id="example" name="Example Configuration"> |
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30 |
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31 <para> |
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32 <example> |
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33 upstream <emphasis>backend</emphasis> { |
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34 server backend1.example.com weight=5; |
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35 server backend2.example.com:8080; |
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36 server unix:/tmp/backend3; |
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37 |
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38 server backup1.example.com:8080 backup; |
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39 server backup2.example.com:8080 backup; |
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40 } |
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41 |
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42 server { |
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43 location / { |
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44 proxy_pass http://<emphasis>backend</emphasis>; |
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45 } |
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46 } |
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47 </example> |
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48 </para> |
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49 |
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50 <para> |
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51 Dynamically configurable group, |
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52 available as part of our |
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53 <commercial_version>commercial subscription</commercial_version>: |
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54 <example> |
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55 upstream <emphasis>appservers</emphasis> { |
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56 zone appservers 64k; |
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57 |
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58 server appserv1.example.com weight=5; |
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59 server appserv2.example.com:8080 fail_timeout=5s slow_start=30s; |
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60 server 192.0.2.1 max_fails=3; |
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61 |
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62 server reserve1.example.com:8080 backup; |
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63 server reserve2.example.com:8080 backup; |
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64 } |
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65 |
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66 server { |
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67 location / { |
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68 proxy_pass http://<emphasis>appservers</emphasis>; |
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69 health_check; |
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70 } |
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71 |
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72 location /upstream_conf { |
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73 upstream_conf; |
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74 allow 127.0.0.1; |
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75 deny all; |
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76 } |
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77 } |
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78 </example> |
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79 </para> |
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80 |
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81 </section> |
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82 |
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83 |
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84 <section id="directives" name="Directives"> |
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85 |
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86 <directive name="upstream"> |
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87 <syntax block="yes"><value>name</value></syntax> |
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88 <default/> |
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89 <context>http</context> |
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90 |
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91 <para> |
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92 Defines a group of servers. |
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93 Servers can listen on different ports. |
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94 In addition, servers listening on TCP and UNIX-domain sockets |
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95 can be mixed. |
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96 </para> |
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97 |
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98 <para> |
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99 Example: |
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100 <example> |
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101 upstream backend { |
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102 server backend1.example.com weight=5; |
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103 server 127.0.0.1:8080 max_fails=3 fail_timeout=30s; |
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104 server unix:/tmp/backend3; |
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105 |
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106 server backup1.example.com backup; |
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107 } |
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108 </example> |
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109 </para> |
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110 |
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111 <para> |
966 | 112 By default, requests are distributed between the servers using a |
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113 weighted round-robin balancing method. |
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114 In the above example, each 7 requests will be distributed as follows: |
966 | 115 5 requests go to <literal>backend1.example.com</literal> |
116 and one request to each of the second and third servers. | |
117 If an error occurs during communication with a server, the request will | |
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118 be passed to the next server, and so on until all of the functioning |
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119 servers will be tried. |
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120 If a successful response could not be obtained from any of the servers, |
966 | 121 the client will receive the result of the communication with the last server. |
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122 </para> |
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123 |
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124 </directive> |
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125 |
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126 |
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127 <directive name="server"> |
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128 <syntax><value>address</value> [<value>parameters</value>]</syntax> |
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129 <default/> |
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130 <context>upstream</context> |
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131 |
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132 <para> |
966 | 133 Defines the <value>address</value> and other <value>parameters</value> |
134 of a server. | |
135 The address can be specified as a domain name or IP address, | |
136 with an optional port, or as a UNIX-domain socket path | |
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137 specified after the “<literal>unix:</literal>” prefix. |
966 | 138 If a port is not specified, the port 80 is used. |
139 A domain name that resolves to several IP addresses defines | |
140 multiple servers at once. | |
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141 </para> |
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142 |
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143 <para> |
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144 The following parameters can be defined: |
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145 <list type="tag"> |
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146 |
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147 <tag-name><literal>weight</literal>=<value>number</value></tag-name> |
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148 <tag-desc> |
966 | 149 sets the weight of the server, by default, 1. |
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150 </tag-desc> |
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151 |
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152 <tag-name><literal>max_fails</literal>=<value>number</value></tag-name> |
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153 <tag-desc> |
966 | 154 sets the number of unsuccessful attempts to communicate with the server |
155 that should happen in the duration set by the <literal>fail_timeout</literal> | |
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156 parameter to consider the server unavailable for a duration also set by the |
966 | 157 <literal>fail_timeout</literal> parameter. |
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158 By default, the number of unsuccessful attempts is set to 1. |
966 | 159 The zero value disables the accounting of attempts. |
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160 What is considered an unsuccessful attempt is defined by the |
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161 <link doc="ngx_http_proxy_module.xml" id="proxy_next_upstream"/>, |
1181 | 162 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_next_upstream"/>, |
163 <link doc="ngx_http_scgi_module.xml" id="scgi_next_upstream"/>, and | |
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164 <link doc="ngx_http_memcached_module.xml" id="memcached_next_upstream"/> |
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165 directives. |
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166 </tag-desc> |
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167 |
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168 <tag-name><literal>fail_timeout</literal>=<value>time</value></tag-name> |
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169 <tag-desc> |
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170 sets |
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171 <list type="bullet"> |
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172 |
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173 <listitem> |
966 | 174 the time during which the specified number of unsuccessful attempts to |
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175 communicate with the server should happen to consider the server unavailable; |
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176 </listitem> |
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177 |
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178 <listitem> |
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179 and the period of time the server will be considered unavailable. |
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180 </listitem> |
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181 |
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182 </list> |
966 | 183 By default, the parameter is set to 10 seconds. |
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184 </tag-desc> |
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185 |
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186 <tag-name><literal>backup</literal></tag-name> |
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187 <tag-desc> |
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188 marks the server as a backup server. |
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189 It will be passed requests when the primary servers are unavailable. |
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190 </tag-desc> |
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191 |
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192 <tag-name><literal>down</literal></tag-name> |
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193 <tag-desc> |
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194 marks the server as permanently unavailable; used along with |
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195 the <link id="ip_hash"/> directive. |
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196 </tag-desc> |
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197 |
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198 </list> |
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199 </para> |
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200 |
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201 <para> |
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202 Additionally, |
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203 the following parameters are available as part of our |
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204 <commercial_version>commercial subscription</commercial_version>: |
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205 <list type="tag"> |
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206 |
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207 <tag-name id="max_conns"> |
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208 <literal>max_conns</literal>=<value>number</value> |
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209 </tag-name> |
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210 <tag-desc> |
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211 limits the maximum <value>number</value> of simultaneous connections to the |
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212 proxied server (1.5.9). |
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213 Default value is zero, meaning there is no limit. |
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214 </tag-desc> |
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215 |
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216 <tag-name id="resolve"> |
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217 <literal>resolve</literal> |
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218 </tag-name> |
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219 <tag-desc> |
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220 monitors changes of the IP addresses |
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221 that correspond to a domain name of the server, |
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222 and automatically modifies the upstream configuration |
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223 without the need of restarting nginx (1.5.12). |
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224 <para> |
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225 In order for this parameter to work, |
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226 the <link doc="ngx_http_core_module.xml" id="resolver"/> directive |
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227 must be specified in the |
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228 <link doc="ngx_http_core_module.xml" id="http"/> block. |
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229 Example: |
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230 <example> |
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231 http { |
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232 resolver 10.0.0.1; |
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233 |
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234 upstream u { |
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235 zone ...; |
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236 ... |
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237 server example.com resolve; |
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238 } |
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239 } |
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240 </example> |
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241 </para> |
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242 </tag-desc> |
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243 |
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244 <tag-name><literal>route</literal>=<value>string</value></tag-name> |
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245 <tag-desc> |
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246 sets the server route name. |
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247 </tag-desc> |
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248 |
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249 <tag-name><literal>slow_start</literal>=<value>time</value></tag-name> |
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250 <tag-desc> |
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251 sets the <value>time</value> during which the server will recover its weight |
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252 from zero to a nominal value, when unhealthy server becomes |
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253 <link id="health_check">healthy</link>, |
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254 or when the server becomes available after a period of time |
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255 it was considered unavailable. |
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256 Default value is zero, i.e. slow start is disabled. |
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257 </tag-desc> |
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258 |
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259 </list> |
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260 </para> |
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261 |
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262 <para> |
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263 <note> |
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264 If there is only a single server in a group, <literal>max_fails</literal>, |
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265 <literal>fail_timeout</literal> and <literal>slow_start</literal> parameters |
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266 are ignored, and such a server will never be considered unavailable. |
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267 </note> |
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268 </para> |
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269 |
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270 </directive> |
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271 |
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272 |
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273 <directive name="zone"> |
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274 <syntax><value>name</value> <value>size</value></syntax> |
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275 <default/> |
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276 <context>upstream</context> |
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277 |
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278 <para> |
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279 Defines the <value>name</value> and <value>size</value> of the shared |
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280 memory zone that keeps the group’s configuration and run-time state that are |
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281 shared between worker processes. |
1123
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282 Such groups allow changing the group membership |
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283 or modifying the settings of a particular server |
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284 without the need of restarting nginx. |
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285 The configuration is accessible via a special location |
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286 handled by <link id="upstream_conf"/>. |
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287 </para> |
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288 |
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289 <para> |
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290 <note> |
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291 This directive is available as part of our |
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292 <commercial_version>commercial subscription</commercial_version>. |
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293 </note> |
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294 </para> |
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295 |
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296 </directive> |
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297 |
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298 |
293
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299 <directive name="ip_hash"> |
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300 <syntax/> |
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301 <default/> |
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302 <context>upstream</context> |
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303 |
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304 <para> |
533
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305 Specifies that a group should use a load balancing method where requests |
293
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306 are distributed between servers based on client IP addresses. |
542
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307 The first three octets of the client IPv4 address, or the entire IPv6 address, |
533
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308 are used as a hashing key. |
966 | 309 The method ensures that requests from the same client will always be |
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310 passed to the same server except when this server is unavailable. |
966 | 311 In the latter case client requests will be passed to another server. |
312 Most probably, it will always be the same server as well. | |
542
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313 <note> |
566 | 314 IPv6 addresses are supported starting from versions 1.3.2 and 1.2.2. |
542
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315 </note> |
293
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316 </para> |
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317 |
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318 <para> |
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319 If one of the servers needs to be temporarily removed, it should |
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320 be marked with the <literal>down</literal> parameter in |
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321 order to preserve the current hashing of client IP addresses. |
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322 </para> |
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323 |
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324 <para> |
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325 Example: |
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326 <example> |
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327 upstream backend { |
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328 ip_hash; |
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329 |
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330 server backend1.example.com; |
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331 server backend2.example.com; |
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332 server backend3.example.com <emphasis>down</emphasis>; |
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333 server backend4.example.com; |
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334 } |
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335 </example> |
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336 </para> |
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337 |
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338 <para> |
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339 <note> |
966 | 340 Until versions 1.3.1 and 1.2.2, it was not possible to specify a weight for |
533
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341 servers using the <literal>ip_hash</literal> load balancing method. |
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342 </note> |
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343 </para> |
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344 |
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345 </directive> |
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346 |
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347 |
316
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348 <directive name="keepalive"> |
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349 <syntax><value>connections</value></syntax> |
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350 <default/> |
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351 <context>upstream</context> |
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352 <appeared-in>1.1.4</appeared-in> |
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353 |
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354 <para> |
966 | 355 Activates the cache for connections to upstream servers. |
316
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356 </para> |
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357 |
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358 <para> |
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359 The <value>connections</value> parameter sets the maximum number of |
966 | 360 idle keepalive connections to upstream servers that are preserved in |
361 the cache of each worker process. | |
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362 When this number is exceeded, the least recently used connections |
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363 are closed. |
316
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364 <note> |
966 | 365 It should be particularly noted that the <literal>keepalive</literal> directive |
366 does not limit the total number of connections to upstream servers | |
367 that an nginx worker process can open. | |
368 The <value>connections</value> parameter should be set to a number small enough | |
369 to let upstream servers process new incoming connections as well. | |
316
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370 </note> |
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371 </para> |
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372 |
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373 <para> |
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374 Example configuration of memcached upstream with keepalive connections: |
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375 <example> |
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376 upstream memcached_backend { |
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377 server 127.0.0.1:11211; |
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378 server 10.0.0.2:11211; |
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379 |
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380 keepalive 32; |
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381 } |
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382 |
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383 server { |
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384 ... |
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385 |
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386 location /memcached/ { |
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387 set $memcached_key $uri; |
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388 memcached_pass memcached_backend; |
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389 } |
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390 |
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391 } |
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392 </example> |
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393 </para> |
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394 |
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395 <para> |
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396 For HTTP, the <link doc="ngx_http_proxy_module.xml" id="proxy_http_version"/> |
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397 directive should be set to “<literal>1.1</literal>” |
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398 and the <header>Connection</header> header field should be cleared: |
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399 <example> |
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400 upstream http_backend { |
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401 server 127.0.0.1:8080; |
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402 |
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403 keepalive 16; |
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404 } |
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405 |
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406 server { |
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407 ... |
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408 |
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409 location /http/ { |
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410 proxy_pass http://http_backend; |
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411 proxy_http_version 1.1; |
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412 proxy_set_header Connection ""; |
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413 ... |
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414 } |
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415 } |
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416 </example> |
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417 </para> |
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418 |
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419 <para> |
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420 <note> |
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421 Alternatively, HTTP/1.0 persistent connections can be used by passing the |
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422 <header>Connection: Keep-Alive</header> header field to an upstream server, |
966 | 423 though this method is not recommended. |
316
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424 </note> |
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425 </para> |
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426 |
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427 <para> |
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428 For FastCGI servers, it is required to set |
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429 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_keep_conn"/> |
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430 for keepalive connections to work: |
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431 <example> |
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432 upstream fastcgi_backend { |
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433 server 127.0.0.1:9000; |
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434 |
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435 keepalive 8; |
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436 } |
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437 |
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Documented the following directives: "keepalive", "proxy_http_version",
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438 server { |
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|
439 ... |
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|
440 |
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441 location /fastcgi/ { |
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442 fastcgi_pass fastcgi_backend; |
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443 fastcgi_keep_conn on; |
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444 ... |
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445 } |
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446 } |
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447 </example> |
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448 </para> |
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|
449 |
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450 <para> |
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451 <note> |
533
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Revamped the upstream documentation somewhat.
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452 When using load balancer methods other than the default |
966 | 453 round-robin method, it is necessary to activate them before |
316
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454 the <literal>keepalive</literal> directive. |
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|
455 </note> |
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|
456 |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
457 <note> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
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diff
changeset
|
458 SCGI and uwsgi protocols do not have a notion of keepalive connections. |
316
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|
459 </note> |
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|
460 </para> |
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|
461 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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diff
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|
462 </directive> |
1fb1c077658b
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diff
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|
463 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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diff
changeset
|
464 |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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316
diff
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|
465 <directive name="least_conn"> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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diff
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|
466 <syntax/> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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|
467 <default/> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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diff
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|
468 <context>upstream</context> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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diff
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|
469 <appeared-in>1.3.1</appeared-in> |
566 | 470 <appeared-in>1.2.2</appeared-in> |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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|
471 |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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316
diff
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|
472 <para> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
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parents:
526
diff
changeset
|
473 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>
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316
diff
changeset
|
474 is passed to the server with the least number of active connections, |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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316
diff
changeset
|
475 taking into account weights of servers. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
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parents:
526
diff
changeset
|
476 If there are several such servers, they are tried using a |
fb630c3c5039
Revamped the upstream documentation somewhat.
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526
diff
changeset
|
477 weighted round-robin balancing method. |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
478 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
479 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
480 </directive> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
481 |
953
aded7086e84f
Commercial version documentation.
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parents:
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diff
changeset
|
482 |
aded7086e84f
Commercial version documentation.
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parents:
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diff
changeset
|
483 <directive name="health_check"> |
aded7086e84f
Commercial version documentation.
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changeset
|
484 <syntax> |
aded7086e84f
Commercial version documentation.
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|
485 [<literal>interval=</literal><value>time</value>] |
aded7086e84f
Commercial version documentation.
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changeset
|
486 <!-- |
aded7086e84f
Commercial version documentation.
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changeset
|
487 [<literal>jitter=</literal><value>time</value>] |
aded7086e84f
Commercial version documentation.
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changeset
|
488 --> |
aded7086e84f
Commercial version documentation.
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changeset
|
489 [<literal>fails=</literal><value>number</value>] |
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Commercial version documentation.
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changeset
|
490 [<literal>passes=</literal><value>number</value>] |
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Commercial version documentation.
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changeset
|
491 [<literal>uri=</literal><value>uri</value>] |
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Commercial version documentation.
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|
492 [<literal>match=</literal><value>name</value>]</syntax> |
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Commercial version documentation.
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diff
changeset
|
493 |
aded7086e84f
Commercial version documentation.
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diff
changeset
|
494 <default/> |
aded7086e84f
Commercial version documentation.
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diff
changeset
|
495 <context>location</context> |
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Commercial version documentation.
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changeset
|
496 |
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Commercial version documentation.
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changeset
|
497 <para> |
956
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Text revision of commercial modules.
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diff
changeset
|
498 Enables periodic health checks of the servers in a |
953
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Commercial version documentation.
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|
499 <link id="upstream">group</link> referenced in the surrounding location. |
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Commercial version documentation.
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|
500 </para> |
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Commercial version documentation.
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changeset
|
501 |
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Commercial version documentation.
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|
502 <para> |
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changeset
|
503 The following optional parameters are supported: |
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Commercial version documentation.
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changeset
|
504 <list type="bullet"> |
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Commercial version documentation.
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changeset
|
505 |
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Commercial version documentation.
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changeset
|
506 <listitem> |
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changeset
|
507 <literal>interval</literal> |
956
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diff
changeset
|
508 sets the interval between two consecutive health checks, |
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Text revision of commercial modules.
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diff
changeset
|
509 by default, 5 seconds; |
953
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Commercial version documentation.
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changeset
|
510 </listitem> |
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Commercial version documentation.
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changeset
|
511 |
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Commercial version documentation.
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changeset
|
512 <listitem> |
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changeset
|
513 <literal>fails</literal> |
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514 sets the number of consecutive failed health checks of a particular server |
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515 after which this server will be considered unhealthy, |
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516 by default, 1; |
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517 </listitem> |
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518 |
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519 <listitem> |
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520 <literal>passes</literal> |
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521 sets the number of consecutive passed health checks of a particular server |
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522 after which the server will be considered healthy, |
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523 by default, 1; |
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524 </listitem> |
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525 |
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526 <listitem> |
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527 <literal>uri</literal> |
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528 defines the URI used in health check requests, |
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529 by default, “<literal>/</literal>”; |
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530 </listitem> |
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531 |
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532 <listitem> |
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533 <literal>match</literal> |
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534 specifies the <literal>match</literal> block configuring the tests that a |
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535 response should pass in order for a health check to pass; |
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536 by default, the response should have status code 2xx or 3xx. |
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537 </listitem> |
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538 |
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539 </list> |
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540 </para> |
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541 |
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542 <para> |
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543 For example, |
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544 <example> |
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545 location / { |
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546 proxy_pass http://backend; |
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547 health_check; |
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548 } |
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549 </example> |
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550 will send “<literal>/</literal>” requests to each |
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551 server in the <literal>backend</literal> group every five seconds. |
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552 If any communication error or timeout occurs, or a |
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553 proxied server responds with the status code other than |
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554 2xx or 3xx, the health check will fail, and the server will |
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555 be considered unhealthy. |
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556 Client requests are not passed to unhealthy servers. |
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557 </para> |
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558 |
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559 <para> |
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560 Health checks can be configured to test the status code of a response, |
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561 presence of certain header fields and their values, |
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562 and the body contents. |
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563 Tests are configured separately using the <link id="match"/> directive |
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564 and referenced in the <literal>match</literal> parameter. |
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565 For example: |
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566 <example> |
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567 http { |
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568 server { |
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569 ... |
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570 location / { |
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571 proxy_pass http://backend; |
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572 health_check match=welcome; |
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573 } |
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574 } |
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575 |
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576 match welcome { |
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577 status 200; |
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578 header Content-Type = text/html; |
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579 body ~ "Welcome to nginx!"; |
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580 } |
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581 } |
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582 </example> |
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583 This configuration tells that for a health check to pass, the response to a |
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584 health check request should succeed, |
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585 have status 200, content type “<literal>text/html</literal>”, |
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586 and contain “<literal>Welcome to nginx!</literal>” in the body. |
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587 </para> |
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588 |
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589 <para> |
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590 The server group must reside in the <link id="zone">shared memory</link>. |
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591 </para> |
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592 |
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593 <para> |
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594 If several health checks are defined for the same group of servers, |
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595 a single failure of any check will make the corresponding server be |
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596 considered unhealthy. |
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597 </para> |
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598 |
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599 <para> |
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600 <note> |
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601 This directive is available as part of our |
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602 <commercial_version>commercial subscription</commercial_version>. |
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603 </note> |
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604 </para> |
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|
605 |
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606 </directive> |
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607 |
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608 |
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609 <directive name="match"> |
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610 <syntax block="yes"><value>name</value></syntax> |
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611 <default/> |
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612 <context>http</context> |
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613 |
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614 <para> |
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615 Defines the named test set used to verify responses to health check requests. |
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616 </para> |
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617 |
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618 <para> |
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619 The following items can be tested in a response: |
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620 <list type="tag"> |
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621 |
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622 <tag-name><literal>status 200;</literal></tag-name> |
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623 <tag-desc>status is 200</tag-desc> |
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624 |
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625 <tag-name><literal>status ! 500;</literal></tag-name> |
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626 <tag-desc>status is not 500</tag-desc> |
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627 |
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628 <tag-name><literal>status 200 204;</literal></tag-name> |
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629 <tag-desc>status is 200 or 204</tag-desc> |
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630 |
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631 <tag-name><literal>status ! 301 302;</literal></tag-name> |
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632 <tag-desc>status is neither 301 nor 302</tag-desc> |
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633 |
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634 <tag-name><literal>status 200-399;</literal></tag-name> |
966 | 635 <tag-desc>status is in the range from 200 to 399</tag-desc> |
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636 |
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637 <tag-name><literal>status ! 400-599;</literal></tag-name> |
966 | 638 <tag-desc>status is not in the range from 400 to 599</tag-desc> |
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639 |
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640 <tag-name><literal>status 301-303 307;</literal></tag-name> |
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641 <tag-desc>status is either 301, 302, 303, or 307</tag-desc> |
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642 |
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643 </list> |
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|
644 |
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645 <list type="tag"> |
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646 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
647 <tag-name><literal>header Content-Type = text/html;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
648 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
649 header contains <header>Content-Type</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
650 with value <literal>text/html</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
651 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
652 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
653 <tag-name><literal>header Content-Type != text/html;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
654 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
655 header contains <header>Content-Type</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
656 with value other than <literal>text/html</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
657 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
658 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
659 <tag-name><literal>header Connection ~ close;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
660 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
661 header contains <header>Connection</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
662 with value matching regular expression <literal>close</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
663 </tag-desc> |
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 <tag-name><literal>header Connection !~ close;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
666 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
667 header contains <header>Connection</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
668 with value not matching regular expression <literal>close</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
669 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
670 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
671 <tag-name><literal>header Host;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
672 <tag-desc>header contains <header>Host</header></tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
673 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
674 <tag-name><literal>header ! X-Accel-Redirect;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
675 <tag-desc>header lacks <header>X-Accel-Redirect</header></tag-desc> |
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 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
678 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
679 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
680 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
681 <tag-name><literal>body ~ "Welcome to nginx!";</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
682 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
683 body matches regular expression “<literal>Welcome to nginx!</literal>” |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
684 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
685 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
686 <tag-name><literal>body !~ "Welcome to nginx!";</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
687 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
688 body does not match regular expression “<literal>Welcome to nginx!</literal>” |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
689 </tag-desc> |
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 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
692 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
693 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
694 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
695 If several tests are specified, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
696 the response matches only if it matches all tests. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
697 <note> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
698 Only the first 256k of the response body are examined. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
699 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
700 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
701 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
702 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
703 Examples: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
704 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
705 # status is 200, content type is "text/html", |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
706 # and body contains "Welcome to nginx!" |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
707 match welcome { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
708 status 200; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
709 header Content-Type = text/html; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
710 body ~ "Welcome to nginx!"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
711 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
712 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
713 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
714 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
715 # 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
|
716 match not_redirect { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
717 status ! 301-303 307; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
718 header ! Refresh; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
719 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
720 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
721 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
722 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
723 # status ok and not in maintenance mode |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
724 match server_ok { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
725 status 200-399; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
726 body !~ "maintenance mode"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
727 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
728 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
729 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
730 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
731 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
732 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
733 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
734 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
735 <commercial_version>commercial subscription</commercial_version>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
736 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
737 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
738 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
739 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
740 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
741 |
1125
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
742 <directive name="queue"> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
743 <syntax> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
744 <value>number</value> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
745 [<literal>timeout</literal>=<value>time</value>]</syntax> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
746 <default/> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
747 <context>upstream</context> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
748 <appeared-in>1.5.12</appeared-in> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
749 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
750 <para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
751 If an upstream server cannot be selected immediately |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
752 while processing a request, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
753 and there are the servers in the group that have reached the |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
754 <link id="max_conns"/> limit, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
755 the request will be placed into the queue. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
756 The directive specifies the maximum number of requests that can be in the queue |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
757 at the same time. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
758 If the queue is filled up, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
759 or the server to pass the request to cannot been selected within |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
760 the time period specified in the <literal>timeout</literal> parameter, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
761 an error will be returned to the client. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
762 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
763 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
764 <para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
765 The default value of the <literal>timeout</literal> parameter is 60 seconds. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
766 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
767 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
768 <para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
769 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
770 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
771 <commercial_version>commercial subscription</commercial_version>. |
1125
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
772 </note> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
773 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
774 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
775 </directive> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
776 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
777 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
778 <directive name="sticky"> |
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Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
779 <syntax><literal>cookie</literal> <value>name</value> |
1001
35ae9ded0465
Updated the "sticky" directive description.
Vladimir Homutov <vl@nginx.com>
parents:
988
diff
changeset
|
780 [<literal>expires=</literal><value>time</value>] |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
781 [<literal>domain=</literal><value>domain</value>] |
1001
35ae9ded0465
Updated the "sticky" directive description.
Vladimir Homutov <vl@nginx.com>
parents:
988
diff
changeset
|
782 [<literal>path=</literal><value>path</value>]</syntax> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
783 <syntax><literal>route</literal> <value>variable</value> ...</syntax> |
987
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
784 <default/> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
785 <context>upstream</context> |
1026
3056640d5022
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Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
786 <appeared-in>1.5.7</appeared-in> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
787 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
788 <para> |
962
f3754c623e6b
Minor editing of the stiky_cookie_insert directive.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
960
diff
changeset
|
789 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
|
790 passed to the same server in a group of servers. |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
791 Two methods are available, |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
792 <literal>cookie</literal> and <literal>route</literal>. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
793 </para> |
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Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
794 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
795 <para> |
3056640d5022
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Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
796 When the <literal>cookie</literal> method is used, information about the |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
797 designated server is passed in an HTTP cookie: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
798 <example> |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
799 upstream backend { |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
800 server backend1.example.com; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
801 server backend2.example.com; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
802 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
803 sticky cookie srv_id expires=1h domain=.example.com path=/; |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
804 } |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
805 </example> |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
806 </para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
807 |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
808 <para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
809 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
|
810 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
|
811 Further requests from the same client are passed to the same server. |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
812 If the designated server cannot process a request, the new server is |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
813 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
|
814 </para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
815 |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
816 <para> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
817 The first parameter sets the name of the cookie to be set or inspected. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
818 Additional parameters may be as follows: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
819 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
820 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
821 <tag-name><literal>expires</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
822 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
823 Sets the time for which a browser should keep the cookie. |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
824 The special value <literal>max</literal> will cause the cookie to expire on |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
825 “<literal>31 Dec 2037 23:55:55 GMT</literal>”. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
826 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
|
827 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
|
828 the end of a browser session. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
829 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
830 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
831 <tag-name><literal>domain</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
832 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
833 Defines the domain for which the cookie is set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
834 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
835 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
836 <tag-name><literal>path</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
837 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
838 Defines the path for which the cookie is set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
839 </tag-desc> |
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 </list> |
981 | 842 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
|
843 </para> |
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 <para> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
846 When the <literal>route</literal> method is used, proxied server assigns |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
847 client a route on receipt of the first request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
848 All subsequent requests from this client will carry routing information |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
849 in a cookie or URI. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
850 This information is compared with the “<literal>route</literal>” parameter |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
851 of the <link id="server"/> directive to identify the server to which the |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
852 request should be proxied. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
853 If the designated server cannot process a request, the new server is |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
854 selected by the configured balancing method as if there is no routing |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
855 information in the request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
856 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
857 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
858 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
859 The parameters of the <literal>route</literal> method specify variables that |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
860 may contain routing information. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
861 The first non-empty variable is used to find the matching server. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
862 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
863 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
864 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
865 Example: |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
866 <example> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
867 map $cookie_jsessionid $route_cookie { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
868 ~.+\.(?P<route>\w+)$ $route; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
869 } |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
870 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
871 map $request_uri $route_uri { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
872 ~jsessionid=.+\.(?P<route>\w+)$ $route; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
873 } |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
874 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
875 upstream backend { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
876 server backend1.example.com route=a; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
877 server backend2.example.com route=b; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
878 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
879 sticky route $route_cookie $route_uri; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
880 } |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
881 </example> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
882 Here, the route is taken from the “<literal>JSESSIONID</literal>” cookie |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
883 if present in a request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
884 Otherwise, the route from the URI is used. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
885 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
886 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
887 <para> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
888 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
889 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
890 <commercial_version>commercial subscription</commercial_version>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
891 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
892 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
893 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
894 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
895 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
896 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
897 <directive name="sticky_cookie_insert"> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
898 <syntax><value>name</value> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
899 [<literal>expires=</literal><value>time</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
900 [<literal>domain=</literal><value>domain</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
901 [<literal>path=</literal><value>path</value>]</syntax> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
902 <default/> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
903 <context>upstream</context> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
904 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
905 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
906 This directive is obsolete since version 1.5.7. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
907 An equivalent |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
908 <link id="sticky"/> directive with a new syntax should be used instead: |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
909 <note> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
910 <literal>sticky cookie</literal> <value>name</value> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
911 [<literal>expires=</literal><value>time</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
912 [<literal>domain=</literal><value>domain</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
913 [<literal>path=</literal><value>path</value>]; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
914 </note> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
915 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
916 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
917 </directive> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
918 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
919 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
920 <directive name="upstream_conf"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
921 <syntax/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
922 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
923 <context>location</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
924 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
925 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
926 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
|
927 location. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
928 Access to this location should be |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
929 <link doc="ngx_http_core_module.xml" id="satisfy">limited</link>. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
930 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
931 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
932 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
933 Configuration commands can be used to: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
934 <list type="bullet"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
935 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
936 <listitem>view all primary or backup servers in a group;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
937 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
938 <listitem>view an individual server;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
939 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
940 <listitem>modify an individual server;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
941 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
942 <listitem>add a new server (see the note below);</listitem> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
943 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
944 <listitem>remove an individual server.</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
945 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
946 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
947 <note> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
948 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
|
949 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
|
950 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
|
951 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
|
952 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
|
953 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
954 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
955 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
956 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
957 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
|
958 for example: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
959 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
960 http://127.0.0.1/upstream_conf?upstream=appservers |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
961 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
962 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
963 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
964 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
965 The following parameters are supported: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
966 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
967 <list type="tag" compact="no"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
968 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
969 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
970 <literal>upstream=</literal><value>name</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
971 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
972 Selects a group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
973 This parameter is mandatory. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
974 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
975 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
976 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
977 <literal>backup=</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
978 </tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
979 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
980 If not set, selects primary servers in the group. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
981 If set, selects backup servers in the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
982 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
983 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
984 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
985 <literal>id=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
986 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
987 Selects an individual primary or backup server in the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
988 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
989 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
990 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
991 <literal>remove=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
992 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
993 Removes an individual primary or backup server from the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
994 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
995 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
996 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
997 <literal>add=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
998 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
999 Adds a new primary or backup server to the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1000 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1001 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1002 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1003 <literal>server=</literal><value>address</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1004 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1005 Same as the “<literal>address</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1006 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1007 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1008 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1009 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1010 <literal>weight=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1011 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1012 Same as the “<literal>weight</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1013 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1014 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1015 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1016 <tag-name> |
aded7086e84f
Commercial version documentation.
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parents:
942
diff
changeset
|
1017 <literal>max_fails=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1018 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1019 Same as the “<literal>max_fails</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1020 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
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parents:
942
diff
changeset
|
1021 </tag-desc> |
aded7086e84f
Commercial version documentation.
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parents:
942
diff
changeset
|
1022 |
aded7086e84f
Commercial version documentation.
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parents:
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diff
changeset
|
1023 <tag-name> |
aded7086e84f
Commercial version documentation.
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parents:
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diff
changeset
|
1024 <literal>fail_timeout=</literal><value>time</value></tag-name> |
aded7086e84f
Commercial version documentation.
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parents:
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diff
changeset
|
1025 <tag-desc> |
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Commercial version documentation.
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parents:
942
diff
changeset
|
1026 Same as the “<literal>fail_timeout</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1027 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1028 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1029 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1030 <tag-name> |
955
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1031 <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
|
1032 <tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1033 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
|
1034 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
|
1035 </tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1036 |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1037 <tag-name> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1038 <literal>down=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1039 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1040 Same as the “<literal>down</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1041 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1042 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1043 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1044 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1045 <literal>up=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1046 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1047 The opposite of the “<literal>down</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1048 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1049 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1050 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1051 <tag-name> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1052 <literal>route=</literal><value>string</value></tag-name> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1053 <tag-desc> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1054 Same as the “<literal>route</literal>” parameter |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1055 of the <link id="server"/> directive. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1056 </tag-desc> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1057 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1058 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1059 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1060 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
|
1061 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
|
1062 target. |
953
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 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1066 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
|
1067 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1068 http://127.0.0.1/upstream_conf?upstream=appservers |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1069 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1070 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1071 To view the backup servers in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1072 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1073 http://127.0.0.1/upstream_conf?upstream=appservers&backup= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1074 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1075 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1076 To view an individual primary server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1077 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1078 http://127.0.0.1/upstream_conf?upstream=appservers&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1079 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1080 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1081 To view an individual backup server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1082 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1083 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
|
1084 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1085 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1086 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1087 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1088 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
|
1089 specify its address in the “<literal>server=</literal>” parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1090 Without other parameters specified, a server will be added with other |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1091 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
|
1092 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1093 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1094 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1095 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
|
1096 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1097 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
|
1098 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1099 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1100 To add a new backup server to the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1101 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1102 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
|
1103 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1104 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1105 To add a new primary server to the group, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1106 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
|
1107 and mark it as “<literal>down</literal>”, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1108 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1109 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
|
1110 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1111 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1112 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1113 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1114 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
|
1115 select it with the <literal>id=</literal> parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1116 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1117 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1118 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1119 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
|
1120 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1121 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
|
1122 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1123 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1124 To remove an individual backup server from the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1125 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1126 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
|
1127 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1128 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1129 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1130 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1131 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
|
1132 select it with the <literal>id=</literal> parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1133 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1134 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1135 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1136 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
|
1137 by marking it as “<literal>down</literal>”, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1138 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1139 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
|
1140 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1141 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1142 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
|
1143 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1144 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
|
1145 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1146 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1147 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
|
1148 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1149 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
|
1150 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1151 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1152 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1153 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1154 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1155 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
1156 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
1157 <commercial_version>commercial subscription</commercial_version>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1158 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1159 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1160 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1161 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1162 |
293
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1163 </section> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1164 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1165 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1166 <section id="variables" name="Embedded Variables"> |
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1167 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1168 <para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1169 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
|
1170 supports the following embedded variables: |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1171 <list type="tag"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1172 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1173 <tag-name id="var_upstream_addr"><var>$upstream_addr</var></tag-name> |
293
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1174 <tag-desc> |
966 | 1175 keeps the IP address and port of the server, |
1176 or the path to the UNIX-domain socket. | |
293
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Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1177 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
|
1178 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
|
1179 “<literal>192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock</literal>”. |
966 | 1180 If an internal redirect from one server group to another happens, |
1181 initiated by | |
293
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1182 <header>X-Accel-Redirect</header> or |
966 | 1183 <link doc="ngx_http_core_module.xml" id="error_page"/>, |
1184 then the server addresses from different groups are separated by colons, e.g. | |
293
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|
1185 “<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
|
1186 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
1187 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1188 <tag-name id="var_upstream_cache_status"><var>$upstream_cache_status</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1189 </tag-name> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1190 <tag-desc> |
966 | 1191 keeps the status of accessing a response cache (0.8.3). |
1075
6c021feec587
Removed unjustified non-breakable spaces.
Ruslan Ermilov <ru@nginx.com>
parents:
1026
diff
changeset
|
1192 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
|
1193 “<literal>BYPASS</literal>”, “<literal>EXPIRED</literal>”, |
1011
2ad2f30efdf2
Documented the "fastcgi_" and "proxy_cache_revalidate" directives.
Vladimir Homutov <vl@nginx.com>
parents:
1003
diff
changeset
|
1194 “<literal>STALE</literal>”, “<literal>UPDATING</literal>”, |
2ad2f30efdf2
Documented the "fastcgi_" and "proxy_cache_revalidate" directives.
Vladimir Homutov <vl@nginx.com>
parents:
1003
diff
changeset
|
1195 “<literal>REVALIDATED</literal>” or “<literal>HIT</literal>”. |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1196 </tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1197 |
1186
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1198 <tag-name id="var_upstream_cookie_"><var>$upstream_cookie_</var><value>name</value> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1199 </tag-name> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1200 <tag-desc> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1201 cookie with the specified <value>name</value> sent by the upstream server |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1202 in the <header>Set-Cookie</header> response header field (1.7.1). |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1203 Only the last server’s response header fields are saved. |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1204 </tag-desc> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1205 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1206 <tag-name id="var_upstream_response_length"><var>$upstream_response_length</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1207 </tag-name> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1208 <tag-desc> |
966 | 1209 keeps the lengths of responses obtained from the upstream servers (0.7.27); |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1210 lengths are kept in bytes. |
966 | 1211 Several response lengths are separated by commas and colons |
1212 like addresses in the <var>$upstream_addr</var> variable. | |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1213 </tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1214 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1215 <tag-name id="var_upstream_response_time"><var>$upstream_response_time</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
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|
1216 </tag-name> |
293
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
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changeset
|
1217 <tag-desc> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1218 keeps times of responses obtained from upstream servers; |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1219 times are kept in seconds with a milliseconds resolution. |
966 | 1220 Several response times are separated by commas and colons |
1221 like addresses in the <var>$upstream_addr</var> variable. | |
293
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diff
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|
1222 </tag-desc> |
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1223 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1224 <tag-name id="var_upstream_status"><var>$upstream_status</var></tag-name> |
293
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changeset
|
1225 <tag-desc> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1226 keeps codes of responses obtained from upstream servers. |
966 | 1227 Several response codes are separated by commas and colons |
1228 like addresses in the <var>$upstream_addr</var> variable. | |
293
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|
1229 </tag-desc> |
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1230 |
1186
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1231 <tag-name id="var_upstream_http_"><var>$upstream_http_</var><value>name</value></tag-name> |
293
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parents:
diff
changeset
|
1232 <tag-desc> |
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parents:
diff
changeset
|
1233 keep server response header fields. |
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1234 For example, the <header>Server</header> response header field |
966 | 1235 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
|
1236 The rules of converting header field names to variable names are the same |
966 | 1237 as for the variables that start with the |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1238 “<link doc="ngx_http_core_module.xml" id="variables">$http_</link>” prefix. |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1239 Only the last server’s response header fields are saved. |
293
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parents:
diff
changeset
|
1240 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
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parents:
diff
changeset
|
1241 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
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parents:
diff
changeset
|
1242 </list> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1243 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1244 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1245 </section> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1246 |
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1247 </module> |