1. 停止服务

systemctl stop nginx

2. 查找nginx相关目录/文件

[root@localhost nginx]# find / -name nginx
/etc/logrotate.d/nginx
/etc/nginx
/var/lib/nginx
/var/log/nginx
/usr/sbin/nginx
/usr/lib64/nginx
/usr/share/nginx

3. 删除find查找到的目录 

rm -rf /etc/logrotate.d/nginx
rm -rf /etc/nginx
rm -rf /var/lib/nginx
rm -rf /var/log/nginx
rm -rf /usr/sbin/nginx
rm -rf /usr/lib64/nginx
rm -rf /usr/share/nginx

4. yum清理nginx

yum remove -y nginx