访问网站，一直加载不了jS文件，然后百度查看，都说是nginx反向代理的问题。果断查看nginx的错误日志
2017/08/29 14:03:08 [alert] 10055#0: *18376887 write() to "/usr/local/nginx/logs/host.access.log" failed (28: No space left on device) while logging request, client: 218.241.251.145, server:
www.ketangzhujiao.cn, request: "GET /favicon.ico HTTP/1.1", upstream: "http://172.20.6.109:6666/favicon.ico", host: "123.103.9.206"2017/08/29 14:03:32 [alert] 10056#0: *18378301 write() to "/usr/local/nginx/logs/host.access.l
连接查看host.access.log大小，11G多。果断删除
重启nginx，正常