nginx

ps -ef|grep nginx 查询nginx进程

　[root@vat-nginx /]# ps -ef|grep nginx
  root 1899 1 0 14:50 ? 00:00:00 nginx: master process ./nginx
  nobody 2322 1899 0 17:20 ? 00:00:00 nginx: worker process
  root 2372 1703 0 17:41 pts/0 00:00:00 grep nginx

 定位当前正在运行的Nginx的配置文件

1、查看 nginx 的PID，以常用的80端口为例(nginx默认端口)：

[root@vat-nginx /]# netstat -anp | grep :80
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      1899/nginx          
或者 [root@vat-nginx /]# lsof -i:80
COMMAND  PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
nginx   1899   root    6u  IPv4  34816      0t0  TCP *:http (LISTEN)
nginx   2322 nobody    6u  IPv4  34816      0t0  TCP *:http (LISTEN)

   2、通过相应的进程ID(比如：1899）查询当前运行的nginx路径：

[root@vat-nginx /]# ll /proc/1899/exe
lrwxrwxrwx 1 root root 0 Dec 17 15:37 /proc/1899/exe -> /opt/nginx/nginx

　3、获取到nginx的执行路径后，使用-t参数即可获取该进程对应的配置文件路径，如

[root@vat-nginx /]# /opt/nginx/nginx -t
nginx: the configuration file /opt/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /opt/nginx/conf/nginx.conf test is successful

查找nginx的服务配置文件(即安装路径)  find / -name nginx.conf 或

[root@vat-nginx opt]# find / -name nginx
/opt/nginx
/opt/nginx/nginx

其中nginx文件是命令文件，找到命令文件后就可以重启服务了

[root@vat-nginx nginx]# ./nginx -c conf/nginx.conf
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:19090 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:9091 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] still could not bind()