nginx 反向代理运行问题总结

invalid pid number in var/run/nginx.pid
现象：重启、停止nginx时报错invalid pid number in var/run/nginx.pid，打开nginx.pid文件，是空的
解决：
1. 查找nginx进程

ps -ef |grep neginx

2. 把PID写进nginx.pid

echo 29896 > var/run/nginx.pid

open() “/usr/local/nginx/logs/access.log” failed
现象：启动nginx时报open() “/usr/local/nginx/logs/access.log” failed(2: No such file or directory)，/usr/local/nginx/目录下没有logs文件夹
解决：在/usr/local/nginx/目录下创建logs文件夹，并创建access.log文件

cd /usr/local/nginx/
mkdir logs
touch logs/access.log

注：修改配置文件后要重启nginx使配置生效