1. 首先输入命令 ps -ef | grep nginx检查一下nginx服务是否在运行。
[root@localhost /]# ps -ef |grep nginx
root       3163   2643  0 14:08 tty1     00:00:00 man nginx
root       5427      1  0 14:50 ?        00:00:00 nginx: master process nginx
nginx      5428   5427  0 14:50 ?        00:00:00 nginx: worker process
root       5532   2746  0 14:52 pts/0    00:00:00 grep --color=auto nginx
  1. 停止Nginx服务
[root@localhost /]# /usr/sbin/nginx -s stop
[root@localhost /]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      1/systemd           
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1261/sshd           
tcp6       0      0 :::111                  :::*                    LISTEN      1/systemd           
tcp6       0      0 :::22                   :::*                    LISTEN      1261/sshd
  1. 查找、删除Nginx相关文件
[root@localhost /]# whereis nginx
nginx: /usr/sbin/nginx /usr/lib64/nginx /etc/nginx /usr/share/nginx /usr/share/man/man8/nginx.8.gz /usr/share/man/man3/nginx.3pm.gz
[root@localhost /]# find / -name nginx
/usr/lib64/perl5/vendor_perl/auto/nginx
/usr/lib64/nginx
/usr/share/nginx
/usr/sbin/nginx
/etc/logrotate.d/nginx
/etc/nginx
/var/lib/nginx
/var/log/nginx
  1. 再使用yum清理
[root@localhost /]# yum remove nginx
依赖关系解决

======================================================================================================
 Package                              架构            版本                       源              大小
======================================================================================================
正在删除:
 nginx                                x86_64          1:1.12.2-3.el7             @epel          1.5 M
为依赖而移除:
 nginx-all-modules                    noarch          1:1.12.2-3.el7             @epel          0.0  
 nginx-mod-http-geoip                 x86_64          1:1.12.2-3.el7             @epel           21 k
 nginx-mod-http-image-filter          x86_64          1:1.12.2-3.el7             @epel           24 k
 nginx-mod-http-perl                  x86_64          1:1.12.2-3.el7             @epel           54 k
 nginx-mod-http-xslt-filter           x86_64          1:1.12.2-3.el7             @epel           24 k
 nginx-mod-mail                       x86_64          1:1.12.2-3.el7             @epel           99 k
 nginx-mod-stream                     x86_64          1:1.12.2-3.el7             @epel          157 k

事务概要
======================================================================================================
移除  1 软件包 (+7 依赖软件包)

安装大小:1.9 M
是否继续?[y/N]: