nginx 安装目录 /usr/local/etc
nginx.conf目录 /usr/local/etc/nginx/nginx.conf
nginx web根目录 /usr/local/var/www/
//后期添加
nginx server配置目录 /usr/local/etc/nginx/servers
nginx 错误总结
1.nginx -s stop出现
nginx: [alert] could not open error log file: open() "/usr/local/var/log/nginx/error.log" failed (13: Permission denied)
sudo chmod a+w /usr/local/var/log/nginx/*.log
sudo chmod a+w /usr/local/var
sudo chmod a+w /usr/local/var/run
出处：https://stackoverflow.com/questions/42605202/how-do-i-configure-nginx-to-put-its-error-log-file-somewhere-i-have-write-privil
2.nginx -s stop出现
nginx: [alert] kill(2040, 15) failed (1: Operation not permitted)
sudo nginx -s stop
3. nginx -s reload出现
nginx: [error] open() "/usr/local/var/run/nginx.pid" failed (2: No such file or directory)
重新启动nginx(在nginx启动时候会生成nginx.pid文件，在nginx关闭会删除该文件，nginx重启也会去查找该文件，若找不到，启动nginx重新生成该文件)
4.sudo nginx 启动出现
nginx: [error] open() "/usr/local/var/run/nginx.pid" failed (2: No such file or directory)
删除/usr/local/var/run/nginx.pid文件
重新启动