Nginx错误日志说明

Posted 2020-09-02

错误日志类型

• 类型1: upstream timed out

• 类型2: connect() failed

• 类型3: no live upstreams

• 类型4: upstream prematurely closed connection

• 类型5: 104: Connection reset by peer

• 类型6: client intended to send too large body

• 类型7: upstream sent no valid HTTP/1.0 header

详细说明

类型	错误日志	原因	解决办法
类型	错误日志	原因	解决办法
1	upstream timed out (110: Connection timed out) while connecting to upstream	nginx与upstream建立tcp连接超时，nginx默认连接建立超时为200ms	排查upstream是否能正常建立tcp连接
1	upstream timed out (110: Connection timed out) while reading response header from upstream	nginx从upstream读取响应时超时，nginx默认的读超时为20s，读超时不是整体读的时间超时，而是指两次读操作之间的超时，整体读耗时有可能超过20s	排查upstream响应请求为什么过于缓慢
2	connect() failed (104: Connection reset by peer) while connecting to upstream	nginx与upstream建立tcp连接时被reset	排查upstream是否能正常建立tcp连接
2	connect() failed (111: Connection refused) while connecting to upstream	nginx与upstream建立tcp连接时被拒	排查upstream是否能正常建立tcp连接
3	no live upstreams while connecting to upstream	nginx向upstream转发请求时发现upstream状态全都为down	排查nginx的upstream的健康检查为什么失败
4	upstream prematurely closed connection	nginx在与upstream建立完tcp连接之后，试图发送请求或者读取响应时，连接被upstream强制关闭	排查upstream程序是否异常，是否能正常处理http请求
5	recv() failed (104: Connection reset by peer) while reading response header from upstream	nginx从upstream读取响应时连接被对方reset	排查upstream应用已经tcp连接状态是否异常
6	client intended to send too large body	客户端试图发送过大的请求body，nginx默认最大允许的大小为1m，超过此大小，客户端会受到http 413错误码	调整请求客户端的请求body大小； 调大相关域名的nginx配置：client_max_body_size；
7	upstream sent no valid HTTP/1.0 header	nginx不能正常解析从upstream返回来的请求行	排查upstream http响应异常