除去配置语法失误、逻辑失误
nginx中的大部分问题都是前端到后端联通性
curl 域名没反应
cyr@test:/etc/nginx/sites-enabled$ curl test.hehe.example.com -vvv
* About to connect() to test.hehe.example.com port 80 (#0)
* Trying 192.168.154.33...
* connected
* Connected to test.hehe.example.com (192.168.154.33) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.26.0
> Host: test.hehe.example.com
> Accept: */*
>
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
* additional stuff not fine transfer.c:1037: 0 0
^C
1.检查nginx是否正常启动状态，否则nginx.conf中cores目录是否存在，否则创建
2.检查前端到后端，直接curl 后端ip:port
3.如后端做了域名分流，后端仍有后端，检查后－后端连通