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记录学习历程与受益知识
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01_Error-Nginx 反代后端接口报错

一。前言#

NGINX 反向代理 后端接口时报错:[error] ...: *1918 readv() failed (104: Connection reset by peer) while reading upstream ...

控制台报错信息

image-20220917210427284

NGINX 错误日志

image-20220917210540055

二。解决办法#

参考文章 http://blog.51yip.com/apachenginx/2203.html

查看 nginx error 错误,发现上传接口报以下错:

2019/10/10 19:58:25 [error] 299784#0: \*5967188 readv() failed (104: Connection reset by peer) while reading upstream, client: 59.34.155.7, server: xxxxxxxx, request: "POST /stream/tracking/file HTTP/1.1", upstream: "http://xxxxxxxx/stream/tracking/file", host: "xxxxxxxx"

这种错误日志不多,第一感觉就是上传文件过大,传输时间过长,然后连接被中断。

当使用nginx作为反向代理时,为了支持长连接,需要做到两点:

从client到nginx的连接是长连接,对于客户端来说,nginx长连接是默认开启的。 从nginx到server的连接是长连接,需要自己开启

upstream bigdata {  
    server 10.0.20.xx:18018;  
    server 10.0.20.xx:18018;  
    server 10.0.20.xx:18018;  
    server 10.0.20.xx:18018;  
    keepalive 100;   //根据qps来调整  
}    
  
location ~ / {  
。。。。。。。。。省略。。。。。。。。。。。。。  
    proxy_connect_timeout      120;   //加大120  
    proxy_send_timeout         120;   //加大120  
    proxy_read_timeout         120;   //加大120  
    proxy_http_version 1.1;    //开启后端,长连接  
    proxy_set_header Connection "";  //开启后端,长连接  
}  

注意:keepalive指定的数值是Nginx每个worker连接后端的最大长连接数,而不是整个Nginx的.

作者:海底苍鹰

地址:http://blog.51yip.com/apachenginx/2203.html

三。个人配置记录#

$ cat cpen.top.conf
server {
    listen xxx ssl;

    server_name xxx.xxx;

    location / {
        proxy_pass http://127.0.0.1:xxx;
        proxy_connect_timeout      120;   # 加大120
        proxy_send_timeout         120;   # 加大120
        proxy_read_timeout         120;   # 加大120
        proxy_http_version 1.1;           # 开启后端,长连接
        proxy_set_header Connection "";   # 开启后端,长连接
        proxy_set_header    Host            $host;
        proxy_set_header    X-Real-IP       $remote_addr;
        proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header    Upgrade         $http_upgrade;
    }

    ssl_certificate     /usr/local/nginx/ssl/xxx.pem;
    ssl_certificate_key /usr/local/nginx/ssl/xxx.key;

    access_log /data/service_logs/nginx/xxx.log misc;
    error_log  /data/service_logs/nginx/xxx.log;
}
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