Mercurial > hg > nginx-site
annotate xml/ru/docs/http/ngx_http_upstream_module.xml @ 3054:0083dce686ec
Free nginx: repository links.
Repositories are now under freenginx.org/hg/. Only essential repositories
are preserved for now: in particular, dev examples are no longer provided,
so the relevant section from the devguide was removed.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Wed, 14 Feb 2024 20:07:38 +0300 |
parents | 9eadb98ec770 |
children | 0bbf14c9fd66 |
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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 |
292 | 10 <module name="Модуль ngx_http_upstream_module" |
135
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11 link="/ru/docs/http/ngx_http_upstream_module.html" |
589 | 12 lang="ru" |
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13 rev="89"> |
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14 |
110
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15 <section id="summary"> |
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16 |
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17 <para> |
292 | 18 Модуль <literal>ngx_http_upstream_module</literal> |
19 позволяет описывать группы серверов, | |
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20 которые могут использоваться в директивах |
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21 <link doc="ngx_http_proxy_module.xml" id="proxy_pass"/>, |
1181 | 22 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_pass"/>, |
1194 | 23 <link doc="ngx_http_uwsgi_module.xml" id="uwsgi_pass"/>, |
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24 <link doc="ngx_http_scgi_module.xml" id="scgi_pass"/>, |
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25 <link doc="ngx_http_memcached_module.xml" id="memcached_pass"/> и |
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26 <link doc="ngx_http_grpc_module.xml" id="grpc_pass"/>. |
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27 </para> |
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28 |
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29 </section> |
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30 |
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31 |
292 | 32 <section id="example" name="Пример конфигурации"> |
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33 |
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34 <para> |
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35 <example> |
292 | 36 upstream <emphasis>backend</emphasis> { |
37 server backend1.example.com weight=5; | |
38 server backend2.example.com:8080; | |
39 server unix:/tmp/backend3; | |
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40 |
292 | 41 server backup1.example.com:8080 backup; |
42 server backup2.example.com:8080 backup; | |
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43 } |
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44 |
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45 server { |
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46 location / { |
292 | 47 proxy_pass http://<emphasis>backend</emphasis>; |
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48 } |
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49 } |
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50 </example> |
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51 </para> |
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52 |
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53 </section> |
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54 |
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55 |
292 | 56 <section id="directives" name="Директивы"> |
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57 |
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58 <directive name="upstream"> |
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59 <syntax block="yes"><value>название</value></syntax> |
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60 <default/> |
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61 <context>http</context> |
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62 |
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63 <para> |
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64 Описывает группу серверов. |
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65 Серверы могут слушать на разных портах. |
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66 Кроме того, можно одновременно использовать серверы, |
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67 слушающие на TCP- и UNIX-сокетах. |
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68 </para> |
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69 |
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70 <para> |
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71 Пример: |
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72 <example> |
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73 upstream backend { |
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74 server backend1.example.com weight=5; |
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75 server 127.0.0.1:8080 max_fails=3 fail_timeout=30s; |
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76 server unix:/tmp/backend3; |
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77 |
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78 server backup1.example.com backup; |
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79 } |
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80 </example> |
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81 </para> |
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82 |
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83 <para> |
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84 По умолчанию запросы распределяются по серверам циклически |
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85 (в режиме round-robin) с учётом весов серверов. |
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86 В вышеприведённом примере каждые 7 запросов будут распределены так: |
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87 5 запросов на <literal>backend1.example.com</literal> |
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88 и по одному запросу на второй и третий серверы. |
966 | 89 Если при попытке работы с сервером происходит ошибка, то запрос |
90 передаётся следующему серверу, и так далее до тех пор, пока не будут опробованы | |
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91 все работающие серверы. |
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92 Если не удастся получить успешный ответ |
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93 ни от одного из серверов, то клиенту будет возвращён результат работы |
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94 с последним сервером. |
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95 </para> |
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96 |
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97 </directive> |
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98 |
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99 |
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100 <directive name="server"> |
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101 <syntax><value>адрес</value> [<value>параметры</value>]</syntax> |
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102 <default/> |
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103 <context>upstream</context> |
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104 |
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105 <para> |
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106 Задаёт <value>адрес</value> и другие <value>параметры</value> |
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107 сервера. |
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108 Адрес может быть указан в виде доменного имени или IP-адреса, |
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109 и необязательного порта, или в виде пути UNIX-сокета, который |
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110 указывается после префикса “<literal>unix:</literal>”. |
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111 Если порт не указан, используется порт 80. |
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112 Доменное имя, которому соответствует несколько IP-адресов, |
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113 задаёт сразу несколько серверов. |
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114 </para> |
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115 |
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116 <para> |
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117 Могут быть заданы следующие параметры: |
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118 <list type="tag"> |
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119 |
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120 <tag-name id="weight"> |
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121 <literal>weight</literal>=<value>число</value> |
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122 </tag-name> |
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123 <tag-desc> |
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124 задаёт вес сервера, по умолчанию 1. |
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125 </tag-desc> |
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126 |
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127 <tag-name id="max_conns"> |
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128 <literal>max_conns</literal>=<value>число</value> |
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129 </tag-name> |
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130 <tag-desc> |
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131 ограничивает максимальное <value>число</value> одновременных активных |
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132 соединений к проксируемому серверу (1.11.5). |
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133 Значение по умолчанию равно 0 и означает, что ограничения нет. |
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134 Если группа не находится в <link id="zone">зоне разделяемой памяти</link>, |
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135 то ограничение работает отдельно для каждого рабочего процесса. |
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136 <note> |
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137 При включённых <link id="keepalive">неактивных постоянных</link> соединениях, |
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138 нескольких |
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139 <link doc="../ngx_core_module.xml" id="worker_processes">рабочих процессах</link> |
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140 и <link id="zone">зоне разделяемой памяти</link>, |
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141 суммарное число активных и неактивных соединений с проксируемым сервером |
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142 может превышать значение <literal>max_conns</literal>. |
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143 </note> |
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144 </tag-desc> |
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145 |
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146 <tag-name id="max_fails"> |
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147 <literal>max_fails</literal>=<value>число</value> |
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148 </tag-name> |
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149 <tag-desc> |
966 | 150 задаёт число неудачных попыток работы с сервером, которые должны произойти |
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151 в течение времени, заданного параметром <literal>fail_timeout</literal>, |
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152 чтобы сервер считался недоступным на период времени, также заданный |
966 | 153 параметром <literal>fail_timeout</literal>. |
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154 По умолчанию число попыток устанавливается равным 1. |
966 | 155 Нулевое значение отключает учёт попыток. |
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156 Что считается неудачной попыткой, определяется директивами |
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157 <link doc="ngx_http_proxy_module.xml" id="proxy_next_upstream"/>, |
1181 | 158 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_next_upstream"/>, |
1194 | 159 <link doc="ngx_http_uwsgi_module.xml" id="uwsgi_next_upstream"/>, |
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160 <link doc="ngx_http_scgi_module.xml" id="scgi_next_upstream"/>, |
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161 <link doc="ngx_http_memcached_module.xml" id="memcached_next_upstream"/> и |
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162 <link doc="ngx_http_grpc_module.xml" id="grpc_next_upstream"/>. |
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163 </tag-desc> |
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164 |
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165 <tag-name id="fail_timeout"> |
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166 <literal>fail_timeout</literal>=<value>время</value> |
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167 </tag-name> |
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168 <tag-desc> |
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169 задаёт |
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170 <list type="bullet"> |
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171 |
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172 <listitem> |
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173 время, в течение которого должно произойти заданное число неудачных |
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174 попыток работы с сервером для того, чтобы сервер считался недоступным; |
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175 </listitem> |
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176 |
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177 <listitem> |
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178 и время, в течение которого сервер будет считаться недоступным. |
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179 </listitem> |
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180 |
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181 </list> |
966 | 182 По умолчанию параметр равен 10 секундам. |
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183 </tag-desc> |
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184 |
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185 <tag-name id="backup"> |
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186 <literal>backup</literal> |
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187 </tag-name> |
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188 <tag-desc> |
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189 помечает сервер как запасной сервер. |
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190 На него будут передаваться запросы в случае, если не работают основные серверы. |
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191 <note> |
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192 Параметр нельзя использовать совместно с |
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193 методами балансировки нагрузки |
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194 <link id="hash"/>, <link id="ip_hash"/> и <link id="random"/>. |
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195 </note> |
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196 </tag-desc> |
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197 |
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198 <tag-name id="down"> |
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199 <literal>down</literal> |
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200 </tag-name> |
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201 <tag-desc> |
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202 помечает сервер как постоянно недоступный. |
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203 </tag-desc> |
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204 |
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205 </list> |
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206 </para> |
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207 |
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208 <para> |
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209 <note> |
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210 Если в группе только один сервер, |
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211 параметры <literal>max_fails</literal> и <literal>fail_timeout</literal> |
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212 игнорируются и такой сервер никогда не будет считаться недоступным. |
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213 </note> |
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214 </para> |
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215 |
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216 </directive> |
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217 |
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218 |
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219 <directive name="zone"> |
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220 <syntax><value>имя</value> [<value>размер</value>]</syntax> |
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221 <default/> |
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222 <context>upstream</context> |
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223 <appeared-in>1.9.0</appeared-in> |
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224 |
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225 <para> |
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226 Задаёт <value>имя</value> и <value>размер</value> зоны разделяемой памяти, |
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227 в которой хранятся конфигурация группы и её рабочее состояние, |
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228 разделяемые между рабочими процессами. |
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229 В одной и той же зоне могут быть сразу несколько групп. |
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230 В этом случае достаточно указать <value>размер</value> только один раз. |
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231 </para> |
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232 |
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233 </directive> |
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234 |
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235 |
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236 <directive name="hash"> |
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237 <syntax><value>ключ</value> [<literal>consistent</literal>]</syntax> |
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238 <default/> |
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239 <context>upstream</context> |
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240 <appeared-in>1.7.2</appeared-in> |
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241 |
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242 <para> |
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243 Задаёт метод балансировки нагрузки для группы, при котором |
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244 соответствие клиента серверу определяется при помощи |
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245 хэшированного значения <value>ключа</value>. |
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246 В качестве <value>ключа</value> может использоваться |
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247 текст, переменные и их комбинации. |
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248 Следует отметить, что любое добавление или удаление серверов в группе |
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249 может привести к перераспределению большинства ключей на другие серверы. |
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250 Метод совместим с библиотекой Perl |
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251 <link url="https://metacpan.org/pod/Cache::Memcached">Cache::Memcached</link>. |
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252 </para> |
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253 |
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254 <para> |
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255 Если задан параметр <literal>consistent</literal>, то вместо |
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256 вышеописанного метода будет использоваться метод консистентного хэширования |
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257 <link url="https://www.metabrew.com/article/libketama-consistent-hashing-algo-memcached-clients">ketama</link>. |
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258 Метод гарантирует, что при добавлении сервера в группу или его удалении |
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259 на другие серверы будет перераспределено минимальное число ключей. |
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260 Применение метода для кэширующих серверов обеспечивает |
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261 больший процент попаданий в кэш. |
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262 Метод совместим с библиотекой Perl |
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263 <link url="https://metacpan.org/pod/Cache::Memcached::Fast">Cache::Memcached::Fast</link> |
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264 при значении параметра <value>ketama_points</value> равным 160. |
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265 </para> |
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266 |
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267 </directive> |
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268 |
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269 |
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270 <directive name="ip_hash"> |
102
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271 <syntax/> |
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272 <default/> |
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273 <context>upstream</context> |
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274 |
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275 <para> |
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276 Задаёт для группы метод балансировки нагрузки, при котором запросы |
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277 распределяются по серверам на основе IP-адресов клиентов. |
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278 В качестве ключа для хэширования используются первые три |
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279 октета IPv4-адреса клиента или IPv6-адрес клиента целиком. |
292 | 280 Метод гарантирует, что запросы одного и того же клиента |
281 будут всегда передаваться на один и тот же сервер. | |
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282 Если же этот сервер будет считаться недоступным, |
292 | 283 то запросы этого клиента будут передаваться на другой сервер. |
284 С большой долей вероятности это также будет один и тот же сервер. | |
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285 <note> |
566 | 286 IPv6-адреса поддерживаются начиная с версий 1.3.2 и 1.2.2. |
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287 </note> |
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288 </para> |
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289 |
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290 <para> |
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291 Если один из серверов нужно убрать на некоторое время, то для сохранения |
292 | 292 текущего хэширования IP-адресов клиентов этот сервер нужно пометить |
293 параметром <literal>down</literal>. | |
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294 </para> |
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295 |
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296 <para> |
292 | 297 Пример: |
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298 <example> |
292 | 299 upstream backend { |
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300 ip_hash; |
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301 |
292 | 302 server backend1.example.com; |
303 server backend2.example.com; | |
304 server backend3.example.com <emphasis>down</emphasis>; | |
305 server backend4.example.com; | |
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306 } |
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307 </example> |
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308 </para> |
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309 |
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310 <para> |
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311 <note> |
566 | 312 До версий 1.3.1 и 1.2.2 для серверов, использующих метод балансировки нагрузки |
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313 <literal>ip_hash</literal>, нельзя было задать вес. |
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314 </note> |
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315 </para> |
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316 |
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317 </directive> |
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318 |
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319 |
316
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320 <directive name="keepalive"> |
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321 <syntax><value>соединения</value></syntax> |
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322 <default/> |
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323 <context>upstream</context> |
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324 <appeared-in>1.1.4</appeared-in> |
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325 |
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326 <para> |
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327 Задействует кэш соединений для группы серверов. |
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328 </para> |
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329 |
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330 <para> |
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331 Параметр <value>соединения</value> устанавливает максимальное число |
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332 неактивных постоянных соединений с серверами группы, которые будут |
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333 сохраняться в кэше каждого рабочего процесса. |
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334 При превышении этого числа наиболее давно не используемые соединения |
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335 закрываются. |
316
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336 <note> |
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337 Следует особо отметить, что директива <literal>keepalive</literal> |
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338 не ограничивает общее число соединений с серверами группы, которые |
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339 рабочие процессы nginx могут открыть. |
966 | 340 Параметр <value>соединения</value> следует устанавливать достаточно |
341 консервативно, чтобы серверы группы по-прежнему могли обрабатывать | |
342 новые входящие соединения. | |
316
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343 </note> |
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344 |
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345 <note> |
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346 При использовании методов балансировки нагрузки, отличных |
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347 от стандартного round-robin, следует активировать их до |
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348 директивы <literal>keepalive</literal>. |
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349 </note> |
316
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350 </para> |
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351 |
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352 <para> |
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353 Пример конфигурации группы серверов memcached с постоянными соединениями: |
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354 <example> |
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355 upstream memcached_backend { |
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356 server 127.0.0.1:11211; |
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357 server 10.0.0.2:11211; |
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358 |
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359 keepalive 32; |
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360 } |
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361 |
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362 server { |
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363 ... |
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364 |
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365 location /memcached/ { |
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366 set $memcached_key $uri; |
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367 memcached_pass memcached_backend; |
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368 } |
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369 |
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370 } |
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371 </example> |
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372 </para> |
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373 |
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|
374 <para> |
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|
375 Для HTTP директиву |
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|
376 <link doc="ngx_http_proxy_module.xml" id="proxy_http_version"/> |
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diff
changeset
|
377 следует установить в “<literal>1.1</literal>”, |
367
f4033b9bc4ec
- Removed unnecessary instances of unbreakable space.
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|
378 а поле заголовка <header>Connection</header> — очистить: |
316
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379 <example> |
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|
380 upstream http_backend { |
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381 server 127.0.0.1:8080; |
1fb1c077658b
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|
382 |
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|
383 keepalive 16; |
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|
384 } |
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|
385 |
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|
386 server { |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
387 ... |
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|
388 |
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Documented the following directives: "keepalive", "proxy_http_version",
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389 location /http/ { |
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390 proxy_pass http://http_backend; |
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391 proxy_http_version 1.1; |
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|
392 proxy_set_header Connection ""; |
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393 ... |
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Documented the following directives: "keepalive", "proxy_http_version",
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394 } |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
395 } |
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|
396 </example> |
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|
397 </para> |
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398 |
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|
399 <para> |
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|
400 <note> |
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changeset
|
401 Хоть это и не рекомендуется, но также возможно использование постоянных |
966 | 402 соединений с HTTP/1.0, путём передачи поля заголовка |
316
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|
403 <header>Connection: Keep-Alive</header> серверу группы. |
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|
404 </note> |
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405 </para> |
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|
406 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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|
407 <para> |
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|
408 Для работы постоянных соединений с FastCGI-серверами потребуется |
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|
409 включить директиву |
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|
410 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_keep_conn"/>: |
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|
411 <example> |
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|
412 upstream fastcgi_backend { |
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|
413 server 127.0.0.1:9000; |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
414 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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|
415 keepalive 8; |
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416 } |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
417 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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|
418 server { |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
419 ... |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
420 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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|
421 location /fastcgi/ { |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
422 fastcgi_pass fastcgi_backend; |
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|
423 fastcgi_keep_conn on; |
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|
424 ... |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
425 } |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
426 } |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
427 </example> |
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|
428 </para> |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
429 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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|
430 <para> |
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|
431 <note> |
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|
432 Протоколы SCGI и uwsgi не определяют семантику постоянных соединений. |
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|
433 </note> |
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|
434 </para> |
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|
435 |
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Documented the following directives: "keepalive", "proxy_http_version",
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|
436 </directive> |
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|
437 |
1fb1c077658b
Documented the following directives: "keepalive", "proxy_http_version",
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diff
changeset
|
438 |
2223
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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diff
changeset
|
439 <directive name="keepalive_requests"> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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diff
changeset
|
440 <syntax><value>число</value></syntax> |
2706
4f44386a16b1
Changed default value of keepalive_requests.
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diff
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|
441 <default>1000</default> |
2223
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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diff
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|
442 <context>upstream</context> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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diff
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|
443 <appeared-in>1.15.3</appeared-in> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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diff
changeset
|
444 |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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diff
changeset
|
445 <para> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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2222
diff
changeset
|
446 Задаёт максимальное число запросов, которые можно |
2225
e2c3d17d0f58
Unified wording of upstream keepalive directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2223
diff
changeset
|
447 сделать по одному постоянному соединению. |
2223
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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diff
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|
448 После того как сделано максимальное число запросов, |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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|
449 соединение закрывается. |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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|
450 </para> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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diff
changeset
|
451 |
2450
a26a42699207
Added note about max number of keepalive requests.
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2434
diff
changeset
|
452 <para> |
a26a42699207
Added note about max number of keepalive requests.
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diff
changeset
|
453 Периодическое закрытие соединений необходимо для освобождения |
a26a42699207
Added note about max number of keepalive requests.
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diff
changeset
|
454 памяти, выделенной под конкретные соединения. |
a26a42699207
Added note about max number of keepalive requests.
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diff
changeset
|
455 Поэтому использование слишком большого максимального числа запросов |
a26a42699207
Added note about max number of keepalive requests.
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diff
changeset
|
456 может приводить к чрезмерному потреблению памяти и не рекомендуется. |
a26a42699207
Added note about max number of keepalive requests.
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diff
changeset
|
457 </para> |
a26a42699207
Added note about max number of keepalive requests.
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parents:
2434
diff
changeset
|
458 |
2706
4f44386a16b1
Changed default value of keepalive_requests.
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parents:
2705
diff
changeset
|
459 <para> |
4f44386a16b1
Changed default value of keepalive_requests.
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2705
diff
changeset
|
460 <note> |
4f44386a16b1
Changed default value of keepalive_requests.
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parents:
2705
diff
changeset
|
461 До версии 1.19.10 по умолчанию использовалось значение 100. |
4f44386a16b1
Changed default value of keepalive_requests.
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diff
changeset
|
462 </note> |
4f44386a16b1
Changed default value of keepalive_requests.
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diff
changeset
|
463 </para> |
4f44386a16b1
Changed default value of keepalive_requests.
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parents:
2705
diff
changeset
|
464 |
2223
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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2222
diff
changeset
|
465 </directive> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
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parents:
2222
diff
changeset
|
466 |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
467 |
2705
06805824d0f0
Documented the keepalive_time directive.
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parents:
2632
diff
changeset
|
468 <directive name="keepalive_time"> |
06805824d0f0
Documented the keepalive_time directive.
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parents:
2632
diff
changeset
|
469 <syntax><value>время</value></syntax> |
06805824d0f0
Documented the keepalive_time directive.
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2632
diff
changeset
|
470 <default>1h</default> |
06805824d0f0
Documented the keepalive_time directive.
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2632
diff
changeset
|
471 <context>upstream</context> |
06805824d0f0
Documented the keepalive_time directive.
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2632
diff
changeset
|
472 <appeared-in>1.19.10</appeared-in> |
06805824d0f0
Documented the keepalive_time directive.
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parents:
2632
diff
changeset
|
473 |
06805824d0f0
Documented the keepalive_time directive.
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parents:
2632
diff
changeset
|
474 <para> |
06805824d0f0
Documented the keepalive_time directive.
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parents:
2632
diff
changeset
|
475 Ограничивает максимальное время, в течение которого |
06805824d0f0
Documented the keepalive_time directive.
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parents:
2632
diff
changeset
|
476 могут обрабатываться запросы в рамках постоянного соединения. |
06805824d0f0
Documented the keepalive_time directive.
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parents:
2632
diff
changeset
|
477 По достижении заданного времени соединение закрывается |
06805824d0f0
Documented the keepalive_time directive.
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parents:
2632
diff
changeset
|
478 после обработки очередного запроса. |
06805824d0f0
Documented the keepalive_time directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2632
diff
changeset
|
479 </para> |
06805824d0f0
Documented the keepalive_time directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2632
diff
changeset
|
480 |
06805824d0f0
Documented the keepalive_time directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2632
diff
changeset
|
481 </directive> |
06805824d0f0
Documented the keepalive_time directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2632
diff
changeset
|
482 |
06805824d0f0
Documented the keepalive_time directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2632
diff
changeset
|
483 |
2223
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
484 <directive name="keepalive_timeout"> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
485 <syntax><value>таймаут</value></syntax> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
486 <default>60s</default> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
487 <context>upstream</context> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
488 <appeared-in>1.15.3</appeared-in> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
489 |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
490 <para> |
2225
e2c3d17d0f58
Unified wording of upstream keepalive directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2223
diff
changeset
|
491 Задаёт таймаут, в течение которого неактивное постоянное |
2223
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
492 соединение с сервером группы не будет закрыто. |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
493 </para> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
494 |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
495 </directive> |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
496 |
a692df6ef304
Added upstream keepalive_timeout and keepalive_requests.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2222
diff
changeset
|
497 |
1125
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
498 <directive name="least_conn"> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
499 <syntax/> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
500 <default/> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
501 <context>upstream</context> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
502 <appeared-in>1.3.1</appeared-in> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
503 <appeared-in>1.2.2</appeared-in> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
504 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
505 <para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
506 Задаёт для группы метод балансировки нагрузки, при котором запрос |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
507 передаётся серверу с наименьшим числом активных соединений, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
508 с учётом весов серверов. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
509 Если подходит сразу несколько серверов, они выбираются циклически |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
510 (в режиме round-robin) с учётом их весов. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
511 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
512 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
513 </directive> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
514 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
515 |
2191
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
516 <directive name="random"> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
517 <syntax>[<literal>two</literal> [<value>метод</value>]]</syntax> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
518 <default/> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
519 <context>upstream</context> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
520 <appeared-in>1.15.1</appeared-in> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
521 |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
522 <para> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
523 Задаёт для группы метод балансировки нагрузки, при котором запрос |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
524 передаётся случайно выбранному серверу, с учётом весов |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
525 серверов. |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
526 </para> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
527 |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
528 <para> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
529 Если указан необязательный параметр <literal>two</literal>, |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
530 то nginx случайным образом выбирает |
2197
03f8a9c5e8ae
Updated link in the "random" directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2191
diff
changeset
|
531 <link url="https://homes.cs.washington.edu/~karlin/papers/balls.pdf">два</link> |
2191
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
532 сервера, из которых выбирает сервер, |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
533 используя указанный <literal>метод</literal>. |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
534 Методом по умолчанию является <literal>least_conn</literal>, |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
535 при котором запрос передаётся на сервер |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
536 с наименьшим количеством активных соединений. |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
537 </para> |
2c56f91c304a
Documented the "random" directive.
Vladimir Homutov <vl@nginx.com>
parents:
2139
diff
changeset
|
538 |
1237
e0a1a929a458
Upstream: translated the sticky_cookie_insert directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1234
diff
changeset
|
539 </directive> |
e0a1a929a458
Upstream: translated the sticky_cookie_insert directive.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1234
diff
changeset
|
540 |
76
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
541 </section> |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
542 |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
543 |
292 | 544 <section id="variables" name="Встроенные переменные"> |
76
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
545 |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
546 <para> |
292 | 547 Модуль <literal>ngx_http_upstream_module</literal> |
548 поддерживает следующие встроенные переменные: | |
549 <list type="tag"> | |
76
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
550 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
551 <tag-name id="var_upstream_addr"><var>$upstream_addr</var></tag-name> |
292 | 552 <tag-desc> |
1391
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
553 хранит IP-адрес и порт или путь к UNIX-сокету сервера группы. |
76
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
554 Если при обработке запроса были сделаны обращения к нескольким серверам, |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
555 то их адреса разделяются запятой, например, |
292 | 556 “<literal>192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock</literal>”. |
256
c78b2d6fe261
Use another term for "redirect".
Ruslan Ermilov <ru@nginx.com>
parents:
222
diff
changeset
|
557 Если произошло внутреннее перенаправление от одной группы серверов на другую |
c78b2d6fe261
Use another term for "redirect".
Ruslan Ermilov <ru@nginx.com>
parents:
222
diff
changeset
|
558 с помощью |
292 | 559 <header>X-Accel-Redirect</header> или |
560 <link doc="ngx_http_core_module.xml" id="error_page"/>, | |
966 | 561 то адреса, соответствующие разным группам серверов, разделяются двоеточием, |
562 например, | |
292 | 563 “<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>”. |
2058
eb58ee50561d
Documented upstream name in $upstream_addr.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2041
diff
changeset
|
564 Если сервер не может быть выбран, |
eb58ee50561d
Documented upstream name in $upstream_addr.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2041
diff
changeset
|
565 то переменная хранит имя группы серверов. |
292 | 566 </tag-desc> |
76
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
567 |
1783
031566771bbd
Documented $upstream_bytes_received for http upstream.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1720
diff
changeset
|
568 <tag-name id="var_upstream_bytes_received"><var>$upstream_bytes_received</var></tag-name> |
031566771bbd
Documented $upstream_bytes_received for http upstream.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1720
diff
changeset
|
569 <tag-desc> |
031566771bbd
Documented $upstream_bytes_received for http upstream.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1720
diff
changeset
|
570 число байт, полученных от сервера группы (1.11.4). |
031566771bbd
Documented $upstream_bytes_received for http upstream.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1720
diff
changeset
|
571 Значения нескольких соединений |
031566771bbd
Documented $upstream_bytes_received for http upstream.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1720
diff
changeset
|
572 разделяются запятыми и двоеточиями подобно адресам в переменной |
031566771bbd
Documented $upstream_bytes_received for http upstream.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1720
diff
changeset
|
573 <link id="var_upstream_addr">$upstream_addr</link>. |
031566771bbd
Documented $upstream_bytes_received for http upstream.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1720
diff
changeset
|
574 </tag-desc> |
031566771bbd
Documented $upstream_bytes_received for http upstream.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1720
diff
changeset
|
575 |
2307
994207cf96da
Documented the "$upstream_bytes_sent" variable for http.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2275
diff
changeset
|
576 <tag-name id="var_upstream_bytes_sent"><var>$upstream_bytes_sent</var></tag-name> |
994207cf96da
Documented the "$upstream_bytes_sent" variable for http.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2275
diff
changeset
|
577 <tag-desc> |
994207cf96da
Documented the "$upstream_bytes_sent" variable for http.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2275
diff
changeset
|
578 число байт, переданных на сервер группы (1.15.8). |
994207cf96da
Documented the "$upstream_bytes_sent" variable for http.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2275
diff
changeset
|
579 Значения нескольких соединений |
994207cf96da
Documented the "$upstream_bytes_sent" variable for http.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2275
diff
changeset
|
580 разделяются запятыми и двоеточиями подобно адресам в переменной |
994207cf96da
Documented the "$upstream_bytes_sent" variable for http.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2275
diff
changeset
|
581 <link id="var_upstream_addr">$upstream_addr</link>. |
994207cf96da
Documented the "$upstream_bytes_sent" variable for http.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2275
diff
changeset
|
582 </tag-desc> |
994207cf96da
Documented the "$upstream_bytes_sent" variable for http.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2275
diff
changeset
|
583 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
584 <tag-name id="var_upstream_cache_status"><var>$upstream_cache_status</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
585 </tag-name> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
586 <tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
587 хранит статус доступа к кэшу ответов (0.8.3). |
1075
6c021feec587
Removed unjustified non-breakable spaces.
Ruslan Ermilov <ru@nginx.com>
parents:
1016
diff
changeset
|
588 Статус может быть одним из “<literal>MISS</literal>”, |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
589 “<literal>BYPASS</literal>”, “<literal>EXPIRED</literal>”, |
1016
2d8269d8fea8
Translated documentation on cache revalidation into russian.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
590 “<literal>STALE</literal>”, “<literal>UPDATING</literal>”, |
2d8269d8fea8
Translated documentation on cache revalidation into russian.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
591 “<literal>REVALIDATED</literal>” или “<literal>HIT</literal>”. |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
592 </tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
593 |
1481
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
594 <tag-name id="var_upstream_connect_time"><var>$upstream_connect_time</var> |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
595 </tag-name> |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
596 <tag-desc> |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
597 хранит время, затраченное на установление соединения с сервером группы (1.9.1); |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
598 время хранится в секундах с точностью до миллисекунд. |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
599 В случае SSL, включает в себя время, потраченное на handshake. |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
600 Времена нескольких соединений |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
601 разделяются запятыми и двоеточиями подобно адресам в переменной |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
602 <link id="var_upstream_addr">$upstream_addr</link>. |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
603 </tag-desc> |
f29398a167d0
Documented the upstream_connect_time variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
1461
diff
changeset
|
604 |
1391
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
605 <tag-name id="var_upstream_cookie_"><var>$upstream_cookie_</var><value>имя</value> |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
606 </tag-name> |
1186
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
607 <tag-desc> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
608 кука с указанным <value>именем</value>, переданная сервером группы |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
609 в поле <header>Set-Cookie</header> заголовка ответа (1.7.1). |
1391
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
610 Необходимо иметь в виду, что куки запоминаются только из ответа |
1186
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
611 последнего сервера. |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
612 </tag-desc> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
613 |
1393
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
614 <tag-name id="var_upstream_header_time"><var>$upstream_header_time</var> |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
615 </tag-name> |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
616 <tag-desc> |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
617 хранит время, |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
618 затраченное на получение заголовка ответа от сервера группы (1.7.10); |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
619 время хранится в секундах с точностью до миллисекунд. |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
620 Времена нескольких ответов |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
621 разделяются запятыми и двоеточиями подобно адресам в переменной |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
622 <link id="var_upstream_addr">$upstream_addr</link>. |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
623 </tag-desc> |
15e8779f0ceb
Documented the $upstream_header_time variable.
Ruslan Ermilov <ru@nginx.com>
parents:
1392
diff
changeset
|
624 |
1392
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
625 <tag-name id="var_upstream_http_"><var>$upstream_http_</var><value>имя</value></tag-name> |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
626 <tag-desc> |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
627 хранят поля заголовка ответа сервера. |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
628 Например, поле заголовка ответа <header>Server</header> |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
629 доступно в переменной <var>$upstream_http_server</var>. |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
630 Правила преобразования имён полей заголовка ответа в имена переменных |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
631 такие же, как для переменных с префиксом |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
632 “<link doc="ngx_http_core_module.xml" id="var_http_">$http_</link>”. |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
633 Необходимо иметь в виду, что поля заголовка запоминаются только из ответа |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
634 последнего сервера. |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
635 </tag-desc> |
82e62822abe8
Sorted upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1391
diff
changeset
|
636 |
2139
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
637 <tag-name id="var_upstream_queue_time"><var>$upstream_queue_time</var></tag-name> |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
638 <tag-desc> |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
639 хранит время, проведённое запросом в <link id="queue">очереди</link> |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
640 (1.13.9); |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
641 время хранится в секундах с точностью до миллисекунд. |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
642 Времена нескольких ответов |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
643 разделяются запятыми и двоеточиями подобно адресам в переменной |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
644 <link id="var_upstream_addr">$upstream_addr</link>. |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
645 </tag-desc> |
f6e578b1b02d
Updated docs for the upcoming NGINX Plus release.
Ruslan Ermilov <ru@nginx.com>
parents:
2134
diff
changeset
|
646 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
647 <tag-name id="var_upstream_response_length"><var>$upstream_response_length</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
648 </tag-name> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
649 <tag-desc> |
1391
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
650 хранит длину ответа, полученного от сервера группы (0.7.27); |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
651 длина хранится в байтах. |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
652 Длины нескольких ответов |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
653 разделяются запятыми и двоеточиями подобно адресам в переменной |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
654 <link id="var_upstream_addr">$upstream_addr</link>. |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
655 </tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
656 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
657 <tag-name id="var_upstream_response_time"><var>$upstream_response_time</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
658 </tag-name> |
292 | 659 <tag-desc> |
1391
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
660 хранит время, затраченное на получение ответа от сервера группы; |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
661 время хранится в секундах с точностью до миллисекунд. |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
662 Времена нескольких ответов |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
663 разделяются запятыми и двоеточиями подобно адресам в переменной |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
664 <link id="var_upstream_addr">$upstream_addr</link>. |
292 | 665 </tag-desc> |
76
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
666 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
667 <tag-name id="var_upstream_status"><var>$upstream_status</var></tag-name> |
292 | 668 <tag-desc> |
1391
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
669 хранит статус ответа, полученного от сервера группы. |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
670 Статусы нескольких ответов |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
671 разделяются запятыми и двоеточиями подобно адресам в переменной |
0702cc081c63
Revised descriptions of upstream module variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1386
diff
changeset
|
672 <link id="var_upstream_addr">$upstream_addr</link>. |
2062
7275c134ec67
Documented "no live upstreams" case for $upstream_status.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2058
diff
changeset
|
673 Если сервер не может быть выбран, то |
7275c134ec67
Documented "no live upstreams" case for $upstream_status.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2058
diff
changeset
|
674 переменная хранит статус <http-status code="502" text="Bad Gateway"/>. |
292 | 675 </tag-desc> |
76
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
676 |
2113
180269c4a220
Documented the "upstream_trailer_" variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2097
diff
changeset
|
677 <tag-name id="var_upstream_trailer_"><var>$upstream_trailer_</var><value>имя</value></tag-name> |
180269c4a220
Documented the "upstream_trailer_" variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2097
diff
changeset
|
678 <tag-desc> |
180269c4a220
Documented the "upstream_trailer_" variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2097
diff
changeset
|
679 хранит поля из конца ответа, |
180269c4a220
Documented the "upstream_trailer_" variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2097
diff
changeset
|
680 полученного от сервера группы (1.13.10). |
180269c4a220
Documented the "upstream_trailer_" variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2097
diff
changeset
|
681 </tag-desc> |
180269c4a220
Documented the "upstream_trailer_" variable.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2097
diff
changeset
|
682 |
76
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
683 </list> |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
684 </para> |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
685 |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
686 </section> |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
687 |
4a4caa566120
Russian documentation import.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
688 </module> |