SRE文档

深浅模式

1.502报错和504报错有什么区别 ​

502 Bad Gateway
The server was acting as a gateway or proxy and received an invalid response from the upstream server.

504 Gateway Timeout
The server was acting as a gateway or proxy and did not receive a timely response from the upstream server
502 Bad Gateway
The server was acting as a gateway or proxy and received an invalid response from the upstream server.

504 Gateway Timeout
The server was acting as a gateway or proxy and did not receive a timely response from the upstream server

502是后端死了，连不上（可能无法建立TCP连接） ，504是后端活着，但没给我回应（至少TCP连接已经建立）

  • 解决方法
  • 502的情况需要检查后端服务器状态。
  • 504的情况需要检查后端服务器响应情况，和nginx设置的超时时间