Mercurial > hg > nginx-site
annotate xml/en/docs/http/ngx_http_upstream_module.xml @ 1168:384bb0349a8a
Documented the "if" parameter of the "access_log" directive.
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Thu, 24 Apr 2014 12:25:59 +0400 |
parents | 07402a11fd8d |
children | b8f0362f61e5 |
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" |
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13 rev="20"> |
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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"/>, | |
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21 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_pass"/>, and |
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22 <link doc="ngx_http_memcached_module.xml" id="memcached_pass"/> directives. |
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23 </para> |
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24 |
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25 </section> |
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26 |
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27 |
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28 <section id="example" name="Example Configuration"> |
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29 |
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30 <para> |
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31 <example> |
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32 upstream <emphasis>backend</emphasis> { |
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33 server backend1.example.com weight=5; |
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34 server backend2.example.com:8080; |
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35 server unix:/tmp/backend3; |
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36 |
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37 server backup1.example.com:8080 backup; |
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38 server backup2.example.com:8080 backup; |
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39 } |
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40 |
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41 server { |
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42 location / { |
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43 proxy_pass http://<emphasis>backend</emphasis>; |
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44 } |
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45 } |
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46 </example> |
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47 </para> |
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48 |
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49 <para> |
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50 Dynamically configurable group, |
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51 available as part of our |
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52 <commercial_version>commercial subscription</commercial_version>: |
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53 <example> |
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54 upstream <emphasis>appservers</emphasis> { |
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55 zone appservers 64k; |
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56 |
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57 server appserv1.example.com weight=5; |
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58 server appserv2.example.com:8080 fail_timeout=5s slow_start=30s; |
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59 server 192.0.2.1 max_fails=3; |
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60 |
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61 server reserve1.example.com:8080 backup; |
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62 server reserve2.example.com:8080 backup; |
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63 } |
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64 |
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65 server { |
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66 location / { |
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67 proxy_pass http://<emphasis>appservers</emphasis>; |
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68 health_check; |
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69 } |
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70 |
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71 location /upstream_conf { |
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72 upstream_conf; |
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73 allow 127.0.0.1; |
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74 deny all; |
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75 } |
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76 } |
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77 </example> |
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78 </para> |
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79 |
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80 </section> |
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81 |
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82 |
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83 <section id="directives" name="Directives"> |
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84 |
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85 <directive name="upstream"> |
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86 <syntax block="yes"><value>name</value></syntax> |
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87 <default/> |
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88 <context>http</context> |
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89 |
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90 <para> |
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91 Defines a group of servers. |
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92 Servers can listen on different ports. |
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93 In addition, servers listening on TCP and UNIX-domain sockets |
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94 can be mixed. |
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95 </para> |
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96 |
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97 <para> |
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98 Example: |
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99 <example> |
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100 upstream backend { |
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101 server backend1.example.com weight=5; |
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102 server 127.0.0.1:8080 max_fails=3 fail_timeout=30s; |
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103 server unix:/tmp/backend3; |
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104 |
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105 server backup1.example.com backup; |
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106 } |
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107 </example> |
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108 </para> |
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109 |
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110 <para> |
966 | 111 By default, requests are distributed between the servers using a |
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112 weighted round-robin balancing method. |
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113 In the above example, each 7 requests will be distributed as follows: |
966 | 114 5 requests go to <literal>backend1.example.com</literal> |
115 and one request to each of the second and third servers. | |
116 If an error occurs during communication with a server, the request will | |
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117 be passed to the next server, and so on until all of the functioning |
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118 servers will be tried. |
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119 If a successful response could not be obtained from any of the servers, |
966 | 120 the client will receive the result of the communication with the last server. |
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121 </para> |
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122 |
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123 </directive> |
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124 |
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125 |
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126 <directive name="server"> |
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127 <syntax><value>address</value> [<value>parameters</value>]</syntax> |
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128 <default/> |
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129 <context>upstream</context> |
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130 |
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131 <para> |
966 | 132 Defines the <value>address</value> and other <value>parameters</value> |
133 of a server. | |
134 The address can be specified as a domain name or IP address, | |
135 with an optional port, or as a UNIX-domain socket path | |
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136 specified after the “<literal>unix:</literal>” prefix. |
966 | 137 If a port is not specified, the port 80 is used. |
138 A domain name that resolves to several IP addresses defines | |
139 multiple servers at once. | |
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140 </para> |
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141 |
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142 <para> |
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143 The following parameters can be defined: |
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144 <list type="tag"> |
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145 |
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146 <tag-name><literal>weight</literal>=<value>number</value></tag-name> |
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147 <tag-desc> |
966 | 148 sets the weight of the server, by default, 1. |
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149 </tag-desc> |
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150 |
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151 <tag-name><literal>max_fails</literal>=<value>number</value></tag-name> |
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152 <tag-desc> |
966 | 153 sets the number of unsuccessful attempts to communicate with the server |
154 that should happen in the duration set by the <literal>fail_timeout</literal> | |
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155 parameter to consider the server unavailable for a duration also set by the |
966 | 156 <literal>fail_timeout</literal> parameter. |
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157 By default, the number of unsuccessful attempts is set to 1. |
966 | 158 The zero value disables the accounting of attempts. |
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159 What is considered an unsuccessful attempt is defined by the |
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160 <link doc="ngx_http_proxy_module.xml" id="proxy_next_upstream"/>, |
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161 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_next_upstream"/>, and |
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162 <link doc="ngx_http_memcached_module.xml" id="memcached_next_upstream"/> |
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163 directives. |
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164 </tag-desc> |
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165 |
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166 <tag-name><literal>fail_timeout</literal>=<value>time</value></tag-name> |
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167 <tag-desc> |
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168 sets |
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169 <list type="bullet"> |
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170 |
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171 <listitem> |
966 | 172 the time during which the specified number of unsuccessful attempts to |
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173 communicate with the server should happen to consider the server unavailable; |
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174 </listitem> |
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175 |
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176 <listitem> |
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177 and the period of time the server will be considered unavailable. |
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178 </listitem> |
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179 |
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180 </list> |
966 | 181 By default, the parameter is set to 10 seconds. |
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182 </tag-desc> |
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183 |
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184 <tag-name><literal>backup</literal></tag-name> |
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185 <tag-desc> |
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186 marks the server as a backup server. |
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187 It will be passed requests when the primary servers are unavailable. |
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188 </tag-desc> |
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189 |
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190 <tag-name><literal>down</literal></tag-name> |
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191 <tag-desc> |
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192 marks the server as permanently unavailable; used along with |
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193 the <link id="ip_hash"/> directive. |
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194 </tag-desc> |
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195 |
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196 </list> |
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197 </para> |
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198 |
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199 <para> |
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200 Additionally, |
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201 the following parameters are available as part of our |
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202 <commercial_version>commercial subscription</commercial_version>: |
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203 <list type="tag"> |
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204 |
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205 <tag-name id="max_conns"> |
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206 <literal>max_conns</literal>=<value>number</value> |
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207 </tag-name> |
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208 <tag-desc> |
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209 limits the maximum <value>number</value> of simultaneous connections to the |
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210 proxied server (1.5.9). |
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211 Default value is zero, meaning there is no limit. |
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212 </tag-desc> |
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213 |
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214 <tag-name id="resolve"> |
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215 <literal>resolve</literal> |
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216 </tag-name> |
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217 <tag-desc> |
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218 monitors changes of the IP addresses |
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219 that correspond to a domain name of the server, |
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220 and automatically modifies the upstream configuration |
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221 without the need of restarting nginx (1.5.12). |
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222 <para> |
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223 In order for this parameter to work, |
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224 the <link doc="ngx_http_core_module.xml" id="resolver"/> directive |
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225 must be specified in the |
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226 <link doc="ngx_http_core_module.xml" id="http"/> block. |
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227 Example: |
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228 <example> |
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229 http { |
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230 resolver 10.0.0.1; |
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231 |
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232 upstream u { |
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233 zone ...; |
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234 ... |
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235 server example.com resolve; |
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236 } |
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237 } |
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238 </example> |
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239 </para> |
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240 </tag-desc> |
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241 |
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242 <tag-name><literal>route</literal>=<value>string</value></tag-name> |
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243 <tag-desc> |
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244 sets the server route name. |
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245 </tag-desc> |
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246 |
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247 <tag-name><literal>slow_start</literal>=<value>time</value></tag-name> |
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248 <tag-desc> |
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249 sets the <value>time</value> during which the server will recover its weight |
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250 from zero to a nominal value, when unhealthy server becomes |
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251 <link id="health_check">healthy</link>, |
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252 or when the server becomes available after a period of time |
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253 it was considered unavailable. |
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254 Default value is zero, i.e. slow start is disabled. |
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255 </tag-desc> |
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256 |
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257 </list> |
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258 </para> |
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259 |
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260 <para> |
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261 <note> |
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262 If there is only a single server in a group, <literal>max_fails</literal>, |
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263 <literal>fail_timeout</literal> and <literal>slow_start</literal> parameters |
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264 are ignored, and such a server will never be considered unavailable. |
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265 </note> |
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266 </para> |
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267 |
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268 </directive> |
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269 |
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270 |
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271 <directive name="zone"> |
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272 <syntax><value>name</value> <value>size</value></syntax> |
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273 <default/> |
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274 <context>upstream</context> |
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275 |
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276 <para> |
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277 Defines the <value>name</value> and <value>size</value> of the shared |
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278 memory zone that keeps the group’s configuration and run-time state that are |
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279 shared between worker processes. |
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280 Such groups allow changing the group membership |
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281 or modifying the settings of a particular server |
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282 without the need of restarting nginx. |
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283 The configuration is accessible via a special location |
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284 handled by <link id="upstream_conf"/>. |
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285 </para> |
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286 |
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287 <para> |
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288 <note> |
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289 This directive is available as part of our |
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290 <commercial_version>commercial subscription</commercial_version>. |
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291 </note> |
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292 </para> |
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293 |
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294 </directive> |
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295 |
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296 |
293
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297 <directive name="ip_hash"> |
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298 <syntax/> |
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299 <default/> |
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300 <context>upstream</context> |
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301 |
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302 <para> |
533
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303 Specifies that a group should use a load balancing method where requests |
293
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304 are distributed between servers based on client IP addresses. |
542
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305 The first three octets of the client IPv4 address, or the entire IPv6 address, |
533
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306 are used as a hashing key. |
966 | 307 The method ensures that requests from the same client will always be |
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308 passed to the same server except when this server is unavailable. |
966 | 309 In the latter case client requests will be passed to another server. |
310 Most probably, it will always be the same server as well. | |
542
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311 <note> |
566 | 312 IPv6 addresses are supported starting from versions 1.3.2 and 1.2.2. |
542
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313 </note> |
293
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314 </para> |
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315 |
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316 <para> |
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317 If one of the servers needs to be temporarily removed, it should |
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318 be marked with the <literal>down</literal> parameter in |
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319 order to preserve the current hashing of client IP addresses. |
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320 </para> |
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321 |
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322 <para> |
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323 Example: |
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324 <example> |
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325 upstream backend { |
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326 ip_hash; |
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327 |
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328 server backend1.example.com; |
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329 server backend2.example.com; |
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330 server backend3.example.com <emphasis>down</emphasis>; |
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331 server backend4.example.com; |
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332 } |
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333 </example> |
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334 </para> |
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335 |
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336 <para> |
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337 <note> |
966 | 338 Until versions 1.3.1 and 1.2.2, it was not possible to specify a weight for |
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339 servers using the <literal>ip_hash</literal> load balancing method. |
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340 </note> |
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341 </para> |
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342 |
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343 </directive> |
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344 |
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345 |
316
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346 <directive name="keepalive"> |
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347 <syntax><value>connections</value></syntax> |
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348 <default/> |
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349 <context>upstream</context> |
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350 <appeared-in>1.1.4</appeared-in> |
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351 |
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352 <para> |
966 | 353 Activates the cache for connections to upstream servers. |
316
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354 </para> |
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355 |
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356 <para> |
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357 The <value>connections</value> parameter sets the maximum number of |
966 | 358 idle keepalive connections to upstream servers that are preserved in |
359 the cache of each worker process. | |
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360 When this number is exceeded, the least recently used connections |
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361 are closed. |
316
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362 <note> |
966 | 363 It should be particularly noted that the <literal>keepalive</literal> directive |
364 does not limit the total number of connections to upstream servers | |
365 that an nginx worker process can open. | |
366 The <value>connections</value> parameter should be set to a number small enough | |
367 to let upstream servers process new incoming connections as well. | |
316
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368 </note> |
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369 </para> |
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370 |
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371 <para> |
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372 Example configuration of memcached upstream with keepalive connections: |
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373 <example> |
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374 upstream memcached_backend { |
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375 server 127.0.0.1:11211; |
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376 server 10.0.0.2:11211; |
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377 |
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378 keepalive 32; |
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379 } |
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380 |
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381 server { |
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382 ... |
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383 |
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384 location /memcached/ { |
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385 set $memcached_key $uri; |
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386 memcached_pass memcached_backend; |
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387 } |
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388 |
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389 } |
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390 </example> |
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391 </para> |
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392 |
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393 <para> |
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394 For HTTP, the <link doc="ngx_http_proxy_module.xml" id="proxy_http_version"/> |
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395 directive should be set to “<literal>1.1</literal>” |
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396 and the <header>Connection</header> header field should be cleared: |
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397 <example> |
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398 upstream http_backend { |
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399 server 127.0.0.1:8080; |
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400 |
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401 keepalive 16; |
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402 } |
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403 |
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404 server { |
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405 ... |
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406 |
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407 location /http/ { |
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408 proxy_pass http://http_backend; |
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409 proxy_http_version 1.1; |
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410 proxy_set_header Connection ""; |
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411 ... |
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412 } |
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413 } |
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414 </example> |
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415 </para> |
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416 |
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417 <para> |
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418 <note> |
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419 Alternatively, HTTP/1.0 persistent connections can be used by passing the |
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420 <header>Connection: Keep-Alive</header> header field to an upstream server, |
966 | 421 though this method is not recommended. |
316
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422 </note> |
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423 </para> |
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424 |
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425 <para> |
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426 For FastCGI servers, it is required to set |
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427 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_keep_conn"/> |
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428 for keepalive connections to work: |
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429 <example> |
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430 upstream fastcgi_backend { |
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431 server 127.0.0.1:9000; |
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432 |
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433 keepalive 8; |
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434 } |
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435 |
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Documented the following directives: "keepalive", "proxy_http_version",
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436 server { |
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|
437 ... |
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|
438 |
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Documented the following directives: "keepalive", "proxy_http_version",
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439 location /fastcgi/ { |
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440 fastcgi_pass fastcgi_backend; |
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441 fastcgi_keep_conn on; |
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442 ... |
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443 } |
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444 } |
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445 </example> |
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446 </para> |
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|
447 |
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|
448 <para> |
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449 <note> |
533
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Revamped the upstream documentation somewhat.
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450 When using load balancer methods other than the default |
966 | 451 round-robin method, it is necessary to activate them before |
316
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452 the <literal>keepalive</literal> directive. |
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|
453 </note> |
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|
454 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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|
455 <note> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
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diff
changeset
|
456 SCGI and uwsgi protocols do not have a notion of keepalive connections. |
316
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diff
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|
457 </note> |
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|
458 </para> |
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|
459 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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diff
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|
460 </directive> |
1fb1c077658b
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diff
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|
461 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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diff
changeset
|
462 |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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316
diff
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|
463 <directive name="least_conn"> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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diff
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|
464 <syntax/> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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|
465 <default/> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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diff
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|
466 <context>upstream</context> |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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diff
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|
467 <appeared-in>1.3.1</appeared-in> |
566 | 468 <appeared-in>1.2.2</appeared-in> |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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diff
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|
469 |
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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316
diff
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|
470 <para> |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
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parents:
526
diff
changeset
|
471 Specifies that a group should use a load balancing method where a request |
526
4f907cde0382
1.3.1 changes: ip_hash+weight, least_conn.
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316
diff
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|
472 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
|
473 taking into account weights of servers. |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
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parents:
526
diff
changeset
|
474 If there are several such servers, they are tried using a |
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
475 weighted round-robin balancing method. |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
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parents:
diff
changeset
|
476 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
477 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
478 </directive> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
479 |
953
aded7086e84f
Commercial version documentation.
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parents:
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diff
changeset
|
480 |
aded7086e84f
Commercial version documentation.
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|
481 <directive name="health_check"> |
aded7086e84f
Commercial version documentation.
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|
482 <syntax> |
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Commercial version documentation.
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|
483 [<literal>interval=</literal><value>time</value>] |
aded7086e84f
Commercial version documentation.
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changeset
|
484 <!-- |
aded7086e84f
Commercial version documentation.
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parents:
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changeset
|
485 [<literal>jitter=</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>fails=</literal><value>number</value>] |
aded7086e84f
Commercial version documentation.
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changeset
|
488 [<literal>passes=</literal><value>number</value>] |
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Commercial version documentation.
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changeset
|
489 [<literal>uri=</literal><value>uri</value>] |
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Commercial version documentation.
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changeset
|
490 [<literal>match=</literal><value>name</value>]</syntax> |
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Commercial version documentation.
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diff
changeset
|
491 |
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Commercial version documentation.
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diff
changeset
|
492 <default/> |
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Commercial version documentation.
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diff
changeset
|
493 <context>location</context> |
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Commercial version documentation.
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diff
changeset
|
494 |
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Commercial version documentation.
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diff
changeset
|
495 <para> |
956
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Text revision of commercial modules.
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diff
changeset
|
496 Enables periodic health checks of the servers in a |
953
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|
497 <link id="upstream">group</link> referenced in the surrounding location. |
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|
498 </para> |
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|
499 |
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Commercial version documentation.
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changeset
|
500 <para> |
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changeset
|
501 The following optional parameters are supported: |
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Commercial version documentation.
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changeset
|
502 <list type="bullet"> |
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Commercial version documentation.
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changeset
|
503 |
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changeset
|
504 <listitem> |
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|
505 <literal>interval</literal> |
956
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diff
changeset
|
506 sets the interval between two consecutive health checks, |
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Text revision of commercial modules.
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diff
changeset
|
507 by default, 5 seconds; |
953
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Commercial version documentation.
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changeset
|
508 </listitem> |
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Commercial version documentation.
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changeset
|
509 |
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Commercial version documentation.
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changeset
|
510 <listitem> |
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511 <literal>fails</literal> |
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512 sets the number of consecutive failed health checks of a particular server |
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513 after which this server will be considered unhealthy, |
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514 by default, 1; |
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515 </listitem> |
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516 |
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517 <listitem> |
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518 <literal>passes</literal> |
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519 sets the number of consecutive passed health checks of a particular server |
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520 after which the server will be considered healthy, |
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521 by default, 1; |
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522 </listitem> |
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523 |
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524 <listitem> |
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525 <literal>uri</literal> |
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526 defines the URI used in health check requests, |
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527 by default, “<literal>/</literal>”; |
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528 </listitem> |
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529 |
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530 <listitem> |
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531 <literal>match</literal> |
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532 specifies the <literal>match</literal> block configuring the tests that a |
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533 response should pass in order for a health check to pass; |
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534 by default, the response should have status code 2xx or 3xx. |
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535 </listitem> |
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536 |
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537 </list> |
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538 </para> |
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539 |
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540 <para> |
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541 For example, |
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542 <example> |
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543 location / { |
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544 proxy_pass http://backend; |
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545 health_check; |
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546 } |
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547 </example> |
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548 will send “<literal>/</literal>” requests to each |
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549 server in the <literal>backend</literal> group every five seconds. |
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550 If any communication error or timeout occurs, or a |
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551 proxied server responds with the status code other than |
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552 2xx or 3xx, the health check will fail, and the server will |
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553 be considered unhealthy. |
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554 Client requests are not passed to unhealthy servers. |
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555 </para> |
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556 |
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557 <para> |
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558 Health checks can be configured to test the status code of a response, |
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559 presence of certain header fields and their values, |
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560 and the body contents. |
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561 Tests are configured separately using the <link id="match"/> directive |
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562 and referenced in the <literal>match</literal> parameter. |
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563 For example: |
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564 <example> |
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565 http { |
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566 server { |
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567 ... |
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568 location / { |
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569 proxy_pass http://backend; |
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570 health_check match=welcome; |
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571 } |
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572 } |
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573 |
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574 match welcome { |
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575 status 200; |
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576 header Content-Type = text/html; |
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577 body ~ "Welcome to nginx!"; |
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578 } |
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579 } |
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580 </example> |
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581 This configuration tells that for a health check to pass, the response to a |
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582 health check request should succeed, |
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583 have status 200, content type “<literal>text/html</literal>”, |
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584 and contain “<literal>Welcome to nginx!</literal>” in the body. |
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585 </para> |
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586 |
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587 <para> |
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588 The server group must reside in the <link id="zone">shared memory</link>. |
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589 </para> |
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590 |
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591 <para> |
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592 If several health checks are defined for the same group of servers, |
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593 a single failure of any check will make the corresponding server be |
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594 considered unhealthy. |
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595 </para> |
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596 |
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597 <para> |
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598 <note> |
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599 This directive is available as part of our |
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600 <commercial_version>commercial subscription</commercial_version>. |
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601 </note> |
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602 </para> |
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603 |
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604 </directive> |
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605 |
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606 |
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607 <directive name="match"> |
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608 <syntax block="yes"><value>name</value></syntax> |
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609 <default/> |
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610 <context>http</context> |
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611 |
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612 <para> |
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613 Defines the named test set used to verify responses to health check requests. |
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614 </para> |
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615 |
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616 <para> |
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617 The following items can be tested in a response: |
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618 <list type="tag"> |
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619 |
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620 <tag-name><literal>status 200;</literal></tag-name> |
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621 <tag-desc>status is 200</tag-desc> |
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622 |
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623 <tag-name><literal>status ! 500;</literal></tag-name> |
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624 <tag-desc>status is not 500</tag-desc> |
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625 |
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626 <tag-name><literal>status 200 204;</literal></tag-name> |
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627 <tag-desc>status is 200 or 204</tag-desc> |
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628 |
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629 <tag-name><literal>status ! 301 302;</literal></tag-name> |
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630 <tag-desc>status is neither 301 nor 302</tag-desc> |
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631 |
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632 <tag-name><literal>status 200-399;</literal></tag-name> |
966 | 633 <tag-desc>status is in the range from 200 to 399</tag-desc> |
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634 |
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635 <tag-name><literal>status ! 400-599;</literal></tag-name> |
966 | 636 <tag-desc>status is not in the range from 400 to 599</tag-desc> |
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637 |
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638 <tag-name><literal>status 301-303 307;</literal></tag-name> |
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639 <tag-desc>status is either 301, 302, 303, or 307</tag-desc> |
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|
640 |
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641 </list> |
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|
642 |
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|
643 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
644 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
645 <tag-name><literal>header Content-Type = text/html;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
646 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
647 header contains <header>Content-Type</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
648 with value <literal>text/html</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
649 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
650 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
651 <tag-name><literal>header Content-Type != text/html;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
652 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
653 header contains <header>Content-Type</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
654 with value other than <literal>text/html</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
655 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
656 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
657 <tag-name><literal>header Connection ~ close;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
658 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
659 header contains <header>Connection</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
660 with value matching regular expression <literal>close</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
661 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
662 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
663 <tag-name><literal>header Connection !~ close;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
664 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
665 header contains <header>Connection</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
666 with value not matching regular expression <literal>close</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
667 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
668 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
669 <tag-name><literal>header Host;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
670 <tag-desc>header contains <header>Host</header></tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
671 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
672 <tag-name><literal>header ! X-Accel-Redirect;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
673 <tag-desc>header lacks <header>X-Accel-Redirect</header></tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
674 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
675 </list> |
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 type="tag"> |
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 <tag-name><literal>body ~ "Welcome to nginx!";</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
680 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
681 body matches regular expression “<literal>Welcome to nginx!</literal>” |
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 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
684 <tag-name><literal>body !~ "Welcome to nginx!";</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
685 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
686 body does not match regular expression “<literal>Welcome to nginx!</literal>” |
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 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
689 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
690 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
691 |
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 If several tests are specified, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
694 the response matches only if it matches all tests. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
695 <note> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
696 Only the first 256k of the response body are examined. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
697 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
698 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
699 |
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 Examples: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
702 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
703 # status is 200, content type is "text/html", |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
704 # and body contains "Welcome to nginx!" |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
705 match welcome { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
706 status 200; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
707 header Content-Type = text/html; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
708 body ~ "Welcome to nginx!"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
709 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
710 </example> |
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 # 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
|
714 match not_redirect { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
715 status ! 301-303 307; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
716 header ! Refresh; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
717 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
718 </example> |
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 # status ok and not in maintenance mode |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
722 match server_ok { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
723 status 200-399; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
724 body !~ "maintenance mode"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
725 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
726 </example> |
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 </para> |
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 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
732 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
733 <commercial_version>commercial subscription</commercial_version>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
734 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
735 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
736 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
737 </directive> |
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 |
1125
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
740 <directive name="queue"> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
741 <syntax> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
742 <value>number</value> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
743 [<literal>timeout</literal>=<value>time</value>]</syntax> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
744 <default/> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
745 <context>upstream</context> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
746 <appeared-in>1.5.12</appeared-in> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
747 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
748 <para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
749 If an upstream server cannot be selected immediately |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
750 while processing a request, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
751 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
|
752 <link id="max_conns"/> limit, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
753 the request will be placed into the queue. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
754 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
|
755 at the same time. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
756 If the queue is filled up, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
757 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
|
758 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
|
759 an error will be returned to the client. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
760 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
761 |
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 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
|
764 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
765 |
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 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
768 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
769 <commercial_version>commercial subscription</commercial_version>. |
1125
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
770 </note> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
771 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
772 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
773 </directive> |
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 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
776 <directive name="sticky"> |
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Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
777 <syntax><literal>cookie</literal> <value>name</value> |
1001
35ae9ded0465
Updated the "sticky" directive description.
Vladimir Homutov <vl@nginx.com>
parents:
988
diff
changeset
|
778 [<literal>expires=</literal><value>time</value>] |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
779 [<literal>domain=</literal><value>domain</value>] |
1001
35ae9ded0465
Updated the "sticky" directive description.
Vladimir Homutov <vl@nginx.com>
parents:
988
diff
changeset
|
780 [<literal>path=</literal><value>path</value>]</syntax> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
781 <syntax><literal>route</literal> <value>variable</value> ...</syntax> |
987
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
782 <default/> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
783 <context>upstream</context> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
784 <appeared-in>1.5.7</appeared-in> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
785 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
786 <para> |
962
f3754c623e6b
Minor editing of the stiky_cookie_insert directive.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
960
diff
changeset
|
787 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
|
788 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
|
789 Two methods are available, |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
790 <literal>cookie</literal> and <literal>route</literal>. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
791 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
792 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
793 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
794 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
|
795 designated server is passed in an HTTP cookie: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
796 <example> |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
797 upstream backend { |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
798 server backend1.example.com; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
799 server backend2.example.com; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
800 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
801 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
|
802 } |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
803 </example> |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
804 </para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
805 |
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 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
|
808 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
|
809 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
|
810 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
|
811 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
|
812 </para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
813 |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
814 <para> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
815 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
|
816 Additional parameters may be as follows: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
817 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
818 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
819 <tag-name><literal>expires</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
820 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
821 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
|
822 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
|
823 “<literal>31 Dec 2037 23:55:55 GMT</literal>”. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
824 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
|
825 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
|
826 the end of a browser session. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
827 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
828 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
829 <tag-name><literal>domain</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
830 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
831 Defines the domain for which the cookie is set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
832 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
833 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
834 <tag-name><literal>path</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
835 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
836 Defines the path for which the cookie is set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
837 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
838 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
839 </list> |
981 | 840 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
|
841 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
842 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
843 <para> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
844 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
|
845 client a route on receipt of the first request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
846 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
|
847 in a cookie or URI. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
848 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
|
849 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
|
850 request should be proxied. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
851 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
|
852 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
|
853 information in the request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
854 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
855 |
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 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
|
858 may contain routing information. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
859 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
|
860 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
861 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
862 <para> |
3056640d5022
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Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
863 Example: |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
864 <example> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
865 map $cookie_jsessionid $route_cookie { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
866 ~.+\.(?P<route>\w+)$ $route; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
867 } |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
868 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
869 map $request_uri $route_uri { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
870 ~jsessionid=.+\.(?P<route>\w+)$ $route; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
871 } |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
872 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
873 upstream backend { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
874 server backend1.example.com route=a; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
875 server backend2.example.com route=b; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
876 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
877 sticky route $route_cookie $route_uri; |
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 </example> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
880 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
|
881 if present in a request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
882 Otherwise, the route from the URI is used. |
3056640d5022
Upstream: documented new "sticky" features.
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parents:
1011
diff
changeset
|
883 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
884 |
3056640d5022
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Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
885 <para> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
886 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
887 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
888 <commercial_version>commercial subscription</commercial_version>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
889 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
890 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
891 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
892 </directive> |
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 |
1026
3056640d5022
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Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
895 <directive name="sticky_cookie_insert"> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
896 <syntax><value>name</value> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
897 [<literal>expires=</literal><value>time</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
898 [<literal>domain=</literal><value>domain</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
899 [<literal>path=</literal><value>path</value>]</syntax> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
900 <default/> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
901 <context>upstream</context> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
902 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
903 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
904 This directive is obsolete since version 1.5.7. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
905 An equivalent |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
906 <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
|
907 <note> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
908 <literal>sticky cookie</literal> <value>name</value> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
909 [<literal>expires=</literal><value>time</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
910 [<literal>domain=</literal><value>domain</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
911 [<literal>path=</literal><value>path</value>]; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
912 </note> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
913 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
914 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
915 </directive> |
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 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
918 <directive name="upstream_conf"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
919 <syntax/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
920 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
921 <context>location</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
922 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
923 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
924 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
|
925 location. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
926 Access to this location should be |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
927 <link doc="ngx_http_core_module.xml" id="satisfy">limited</link>. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
928 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
929 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
930 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
931 Configuration commands can be used to: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
932 <list type="bullet"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
933 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
934 <listitem>view all primary or backup servers in a group;</listitem> |
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 an individual server;</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>modify an individual server;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
939 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
940 <listitem>add a new server (see the note below);</listitem> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
941 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
942 <listitem>remove an individual server.</listitem> |
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 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
945 <note> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
946 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
|
947 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
|
948 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
|
949 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
|
950 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
|
951 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
952 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
953 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
954 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
955 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
|
956 for example: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
957 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
958 http://127.0.0.1/upstream_conf?upstream=appservers |
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 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
961 |
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 The following parameters are supported: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
964 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
965 <list type="tag" compact="no"> |
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 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
968 <literal>upstream=</literal><value>name</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
969 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
970 Selects a group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
971 This parameter is mandatory. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
972 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
973 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
974 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
975 <literal>backup=</literal> |
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 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
978 If not set, selects primary servers in the group. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
979 If set, selects backup servers in the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
980 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
981 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
982 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
983 <literal>id=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
984 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
985 Selects an individual primary or backup server in the group. |
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 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
988 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
989 <literal>remove=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
990 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
991 Removes an individual primary or backup server from the group. |
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 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
994 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
995 <literal>add=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
996 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
997 Adds a new primary or backup server to the group. |
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 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1000 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1001 <literal>server=</literal><value>address</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1002 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1003 Same as the “<literal>address</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1004 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1005 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1006 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1007 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1008 <literal>weight=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1009 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1010 Same as the “<literal>weight</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1011 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1012 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1013 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1014 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1015 <literal>max_fails=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1016 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1017 Same as the “<literal>max_fails</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1018 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1019 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1020 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1021 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1022 <literal>fail_timeout=</literal><value>time</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1023 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1024 Same as the “<literal>fail_timeout</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1025 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1026 </tag-desc> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1027 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1028 <tag-name> |
955
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1029 <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
|
1030 <tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1031 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
|
1032 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
|
1033 </tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1034 |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1035 <tag-name> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1036 <literal>down=</literal></tag-name> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1037 <tag-desc> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1038 Same as the “<literal>down</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1039 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1040 </tag-desc> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1041 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1042 <tag-name> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1043 <literal>up=</literal></tag-name> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1044 <tag-desc> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1045 The opposite of the “<literal>down</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1046 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1047 </tag-desc> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1048 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1049 <tag-name> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1050 <literal>route=</literal><value>string</value></tag-name> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1051 <tag-desc> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1052 Same as the “<literal>route</literal>” parameter |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1053 of the <link id="server"/> directive. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1054 </tag-desc> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
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|
1055 |
953
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Commercial version documentation.
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parents:
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diff
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|
1056 </list> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1057 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1058 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
|
1059 Without other parameters, the command shows configuration of the selected |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1060 target. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1061 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1062 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
1063 <para> |
956
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Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1064 For example, to view the primary servers in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1065 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1066 http://127.0.0.1/upstream_conf?upstream=appservers |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
1067 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1068 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1069 To view the backup servers in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1070 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1071 http://127.0.0.1/upstream_conf?upstream=appservers&backup= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1072 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1073 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1074 To view an individual primary server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1075 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1076 http://127.0.0.1/upstream_conf?upstream=appservers&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
1077 </example> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1078 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1079 To view an individual backup server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1080 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1081 http://127.0.0.1/upstream_conf?upstream=appservers&backup=&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1082 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1083 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1084 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1085 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1086 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
|
1087 specify its address in the “<literal>server=</literal>” parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1088 Without other parameters specified, a server will be added with other |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1089 parameters set to their default values (see the <link id="server"/> directive). |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1090 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1091 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1092 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1093 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
|
1094 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1095 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:
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diff
changeset
|
1096 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1097 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1098 To add a new backup server to the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1099 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1100 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:
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diff
changeset
|
1101 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1102 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1103 To add a new primary server to the group, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1104 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
|
1105 and mark it as “<literal>down</literal>”, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1106 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1107 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:
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diff
changeset
|
1108 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1109 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1110 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1111 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1112 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
|
1113 select it with the <literal>id=</literal> parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1114 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1115 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1116 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1117 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
|
1118 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1119 http://127.0.0.1/upstream_conf?remove=&upstream=appservers&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1120 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1121 |
956
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Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1122 To remove an individual backup server from the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1123 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1124 http://127.0.0.1/upstream_conf?remove=&upstream=appservers&backup=&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1125 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1126 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1127 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1128 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1129 To modify an individual primary or backup server in the group, |
956
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Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1130 select it with the <literal>id=</literal> parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1131 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1132 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1133 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1134 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:
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diff
changeset
|
1135 by marking it as “<literal>down</literal>”, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1136 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1137 http://127.0.0.1/upstream_conf?upstream=appservers&id=42&down= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1138 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1139 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
1140 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
|
1141 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1142 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
|
1143 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
1144 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1145 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
|
1146 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1147 http://127.0.0.1/upstream_conf?upstream=appservers&id=42&max_fails=3&weight=4 |
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Commercial version documentation.
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|
1148 </example> |
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|
1149 |
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Commercial version documentation.
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1150 </para> |
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Commercial version documentation.
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|
1151 |
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Commercial version documentation.
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|
1152 <para> |
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Commercial version documentation.
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|
1153 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
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|
1154 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
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|
1155 <commercial_version>commercial subscription</commercial_version>. |
953
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Commercial version documentation.
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|
1156 </note> |
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diff
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|
1157 </para> |
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diff
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|
1158 |
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Commercial version documentation.
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diff
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|
1159 </directive> |
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|
1160 |
293
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1161 </section> |
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|
1162 |
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|
1163 |
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|
1164 <section id="variables" name="Embedded Variables"> |
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1165 |
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|
1166 <para> |
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|
1167 The <literal>ngx_http_upstream_module</literal> module |
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|
1168 supports the following embedded variables: |
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English translation of the ngx_http_upstream_module documentation.
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|
1169 <list type="tag"> |
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|
1170 |
1155
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Assigned IDs to tags describing variables.
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|
1171 <tag-name id="var_upstream_addr"><var>$upstream_addr</var></tag-name> |
293
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1172 <tag-desc> |
966 | 1173 keeps the IP address and port of the server, |
1174 or the path to the UNIX-domain socket. | |
293
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1175 If several servers were contacted during request processing, |
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1176 their addresses are separated by commas, e.g. |
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|
1177 “<literal>192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock</literal>”. |
966 | 1178 If an internal redirect from one server group to another happens, |
1179 initiated by | |
293
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1180 <header>X-Accel-Redirect</header> or |
966 | 1181 <link doc="ngx_http_core_module.xml" id="error_page"/>, |
1182 then the server addresses from different groups are separated by colons, e.g. | |
293
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1183 “<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>”. |
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|
1184 </tag-desc> |
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|
1185 |
1155
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1186 <tag-name id="var_upstream_cache_status"><var>$upstream_cache_status</var> |
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1187 </tag-name> |
731
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|
1188 <tag-desc> |
966 | 1189 keeps the status of accessing a response cache (0.8.3). |
1075
6c021feec587
Removed unjustified non-breakable spaces.
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parents:
1026
diff
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|
1190 The status can be either “<literal>MISS</literal>”, |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
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|
1191 “<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
|
1192 “<literal>STALE</literal>”, “<literal>UPDATING</literal>”, |
2ad2f30efdf2
Documented the "fastcgi_" and "proxy_cache_revalidate" directives.
Vladimir Homutov <vl@nginx.com>
parents:
1003
diff
changeset
|
1193 “<literal>REVALIDATED</literal>” or “<literal>HIT</literal>”. |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
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parents:
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|
1194 </tag-desc> |
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diff
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|
1195 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
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|
1196 <tag-name id="var_upstream_response_length"><var>$upstream_response_length</var> |
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|
1197 </tag-name> |
731
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Documented $upstream_cache_status and $upstream_response_length variables.
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|
1198 <tag-desc> |
966 | 1199 keeps the lengths of responses obtained from the upstream servers (0.7.27); |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
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|
1200 lengths are kept in bytes. |
966 | 1201 Several response lengths are separated by commas and colons |
1202 like addresses in the <var>$upstream_addr</var> variable. | |
731
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Documented $upstream_cache_status and $upstream_response_length variables.
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|
1203 </tag-desc> |
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|
1204 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
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|
1205 <tag-name id="var_upstream_response_time"><var>$upstream_response_time</var> |
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|
1206 </tag-name> |
293
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1207 <tag-desc> |
731
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|
1208 keeps times of responses obtained from upstream servers; |
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|
1209 times are kept in seconds with a milliseconds resolution. |
966 | 1210 Several response times are separated by commas and colons |
1211 like addresses in the <var>$upstream_addr</var> variable. | |
293
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1212 </tag-desc> |
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1213 |
1155
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|
1214 <tag-name id="var_upstream_status"><var>$upstream_status</var></tag-name> |
293
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1215 <tag-desc> |
731
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|
1216 keeps codes of responses obtained from upstream servers. |
966 | 1217 Several response codes are separated by commas and colons |
1218 like addresses in the <var>$upstream_addr</var> variable. | |
293
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1219 </tag-desc> |
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1220 |
1155
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1221 <tag-name id="var_upstream_http_"><var>$upstream_http_...</var></tag-name> |
293
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1222 <tag-desc> |
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|
1223 keep server response header fields. |
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|
1224 For example, the <header>Server</header> response header field |
966 | 1225 is available through the <var>$upstream_http_server</var> variable. |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
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|
1226 The rules of converting header field names to variable names are the same |
966 | 1227 as for the variables that start with the |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
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|
1228 “<link doc="ngx_http_core_module.xml" id="variables">$http_</link>” prefix. |
f62328124e5b
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|
1229 Only the last server’s response header fields are saved. |
293
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1230 </tag-desc> |
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|
1231 |
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|
1232 </list> |
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|
1233 </para> |
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|
1234 |
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|
1235 </section> |
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|
1236 |
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1237 </module> |