关于Nginx的超时timeout配置

迈不过友情╰ 2024-03-23 18:46 75阅读 0赞

![76a47ead7ce5c123df4b80a30a309095.jpeg][]

本文主要介绍了Nginx的超时timeout配置详解，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧

本文介绍 Nginx 的 超时（timeout）配置。分享给大家，具体如下：

Nginx 处理的每个请求均有相应的超时设置。如果做好这些超时时间的限定，判定超时后资源被释放，用来处理其他的请求，以此提升 Nginx 的性能。

**keepalive\_timeout**

HTTP 是一种无状态协议，客户端向服务器发送一个 TCP 请求，服务端响应完毕后断开连接。

如果客户端向服务器发送多个请求，每个请求都要建立各自独立的连接以传输数据。

HTTP 有一个 KeepAlive 模式，它告诉 webserver 在处理完一个请求后保持这个 TCP 连接的打开状态。若接收到来自客户端的其它请求，服务端会利用这个未被关闭的连接，而不需要再建立一个连接。

KeepAlive 在一段时间内保持打开状态，它们会在这段时间内占用资源。占用过多就会影响性能。

Nginx 使用 keepalive\_timeout 来指定 KeepAlive 的超时时间（timeout）。指定每个 TCP 连接最多可以保持多长时间。Nginx 的默认值是 75 秒，有些浏览器最多只保持 60 秒，所以可以设定为 60 秒。若将它设置为 0，就禁止了 keepalive 连接。

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> </td> 
   <td> <p><code># 配置段: http, server, location</code></p> <p><code>keepalive_timeout 60s;</code></p> </td> 
  </tr> 
 </tbody> 
</table>

**client\_body\_timeout**

指定客户端与服务端建立连接后发送 request body 的超时时间。如果客户端在指定时间内没有发送任何内容，Nginx 返回 HTTP 408（Request Timed Out）。

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> </td> 
   <td> <p><code># 配置段: http, server, location</code></p> <p><code>client_body_timeout 20s;</code></p> </td> 
  </tr> 
 </tbody> 
</table>

**client\_header\_timeout**

客户端向服务端发送一个完整的 request header 的超时时间。如果客户端在指定时间内没有发送一个完整的 request header，Nginx 返回 HTTP 408（Request Timed Out）。

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> </td> 
   <td> <p><code># 配置段: http, server, location</code></p> <p><code>client_header_timeout 10s;</code></p> </td> 
  </tr> 
 </tbody> 
</table>

**send\_timeout**

服务端向客户端传输数据的超时时间。

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> </td> 
   <td> <p><code>#</code> <code>配置段</code><code>:</code> <code>http, server, location</code></p> <p><code>send</code><code>_</code><code>timeout </code><code>30</code><code>s;</code></p> </td> 
  </tr> 
 </tbody> 
</table>

客户度连接nginx超时, 建议5s内

接收客户端header超时, 默认60s, 如果60s内没有收到完整的http包头, 返回408

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> </td> 
   <td> <p><code>Syntax: client_header_timeout time;</code></p> <p><code>Default:&nbsp; </code></p> <p><code>client_header_timeout 60s;</code></p> <p><code>Context:&nbsp; http, server</code></p> <p><code>Defines a timeout for reading client request header. If a client does not transmit the entire header within this time, </code></p> <p><code>the 408 (Request Time-out) error is returned to the client.</code></p> </td> 
  </tr> 
 </tbody> 
</table>

接收客户端body超时, 默认60s, 如果连续的60s内没有收到客户端的1个字节, 返回408

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> <p>7</p> </td> 
   <td> <p><code>Syntax: client_body_timeout time;</code></p> <p><code>Default:&nbsp; </code></p> <p><code>client_body_timeout 60s;</code></p> <p><code>Context:&nbsp; http, server, location</code></p> <p><code>Defines a timeout for reading client request body. The timeout is set only for a period between two successive read operations, not for the transmission of the whole request body. </code></p> <p><code>If a client does not transmit anything within this time, </code></p> <p><code>the 408 (Request Time-out) error is returned to the client.</code></p> </td> 
  </tr> 
 </tbody> 
</table>

keepalive时间，默认75s，通常keepalive\_timeout应该比client\_body\_timeout大

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> </td> 
   <td> <p><code>Syntax: keepalive_timeout timeout [header_timeout];</code></p> <p><code>Default:&nbsp; </code></p> <p><code>keepalive_timeout 75s;</code></p> <p><code>Context:&nbsp; http, server, location</code></p> <p><code>The first parameter sets a timeout during which a keep-alive client connection will stay open on the server side. The zero value disables keep-alive client connections. </code></p> <p><code>The optional second parameter sets a value in the “Keep-Alive: timeout=time” response header field. Two parameters may differ.</code></p> </td> 
  </tr> 
 </tbody> 
</table>

The “Keep-Alive: timeout=time” header field is recognized by Mozilla and Konqueror. MSIE closes keep-alive connections by itself in about 60 seconds.

可以理解为TCP连接关闭时的SO\_LINGER延时设置，默认5s

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> <p>7</p> </td> 
   <td> <p><code>Syntax: lingering_timeout time;</code></p> <p><code>Default:&nbsp; </code></p> <p><code>lingering_timeout 5s;</code></p> <p><code>Context:&nbsp; http, server, location</code></p> <p><code>When lingering_close is in effect, this directive specifies the maximum waiting time for more client data to arrive. If data are not received during this time, </code></p> <p><code>the connection is closed. Otherwise, the data are read and ignored, and nginx starts waiting for more data again. </code></p> <p><code>The “wait-read-ignore” cycle is repeated, but no longer than specified by the lingering_time directive.</code></p> </td> 
  </tr> 
 </tbody> 
</table>

域名解析超时，默认30s

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> </td> 
   <td> <p><code>Syntax: resolver_timeout time;</code></p> <p><code>Default:&nbsp; </code></p> <p><code>resolver_timeout 30s;</code></p> <p><code>Context:&nbsp; http, server, location</code></p> <p><code>Sets a timeout for name resolution, for example:</code></p> <p><code>resolver_timeout 5s;</code></p> </td> 
  </tr> 
 </tbody> 
</table>

发送数据至客户端超时, 默认60s, 如果连续的60s内客户端没有收到1个字节, 连接关闭

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> </td> 
   <td> <p><code>Syntax: send_timeout time;</code></p> <p><code>Default:&nbsp; </code></p> <p><code>send_timeout 60s;</code></p> <p><code>Context:&nbsp; http, server, location</code></p> <p><code>Sets a timeout for transmitting a response to the client. The timeout is set only between two successive write operations, </code></p> <p><code>not for the transmission of the whole response. If the client does not receive anything within this time, the connection is closed.</code></p> </td> 
  </tr> 
 </tbody> 
</table>

nginx与upstream server的连接超时时间

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> </td> 
   <td> <p><code>Syntax: proxy_connect_timeout time;</code></p> <p><code>Default:&nbsp; </code></p> <p><code>proxy_connect_timeout 60s;</code></p> <p><code>Context:&nbsp; http, server, location</code></p> <p><code>Defines a timeout for establishing a connection with a proxied server. It should be noted that this timeout cannot usually exceed 75 seconds.</code></p> </td> 
  </tr> 
 </tbody> 
</table>

nginx接收upstream server数据超时, 默认60s, 如果连续的60s内没有收到1个字节, 连接关闭

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> </td> 
   <td> <p><code>Syntax: proxy_read_timeout time;</code></p> <p><code>Default:&nbsp; </code></p> <p><code>proxy_read_timeout 60s;</code></p> <p><code>Context:&nbsp; http, server, location</code></p> <p><code>Defines a timeout for reading a response from the proxied server. The timeout is set only between two successive read operations, </code></p> <p><code>not for the transmission of the whole response. If the proxied server does not transmit anything within this time, the connection is closed.</code></p> </td> 
  </tr> 
 </tbody> 
</table>

nginx发送数据至upstream server超时, 默认60s, 如果连续的60s内没有发送1个字节, 连接关闭

<table> 
 <tbody> 
  <tr> 
   <td> <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> </td> 
   <td> <p><code>Syntax: proxy_send_timeout time;</code></p> <p><code>Default:&nbsp; </code></p> <p><code>proxy_send_timeout 60s;</code></p> <p><code>Context:&nbsp; http, server, location</code></p> <p><code>Sets a timeout for transmitting a request to the proxied server. The timeout is set only between two successive write operations, </code></p> <p><code>not for the transmission of the whole request. If the proxied server does not receive anything within this time, the connection is closed.</code></p> </td> 
  </tr> 
 </tbody> 
</table>

以上就是本文的全部内容，希望对大家的学习有所帮助！

转自：[微点阅读][Link 1] [https://www.weidianyuedu.com][https_www.weidianyuedu.com]

[76a47ead7ce5c123df4b80a30a309095.jpeg]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/4e49f194d2464556abf270e9d8efd210.png
[Link 1]: https://m.weidianyuedu.com/
[https_www.weidianyuedu.com]: https://www.weidianyuedu.com