nginx的安装目录 ： /usr/local/nginx

一、没有设置开机自启动前，需要执行/usr/local/nginx/sbin/nginx 启动

二、接下来，我们设置开机自启动，就不用手动启动nginx了

1、cd /usr/lib/systemd/system/

2、vi nginx.service

[unit]
Description=The NGINX HTTP and reverse proxy server
After=syslog.target network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
ExecStartPre=/usr/local/nginx/sbin/nginx -t
ExecStart=/usr/local/nginx/sbin/nginx
ExecReload=/usr/local/nginx//sbin/nginx -s reload
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true

[Install]
WantedBy=multi-user.target

3、保存nginx.service文件，然后刷新systemd服务 systemctl daemon-reload

4、查看所有已启动的服务 systemctl list-units --type=service

5、启动、停止、重启服务

systemctl start nginx.service

systemctl stop nginx.service

systemctl restart nginx.service

systemctl status nginx.service

6、开启/关闭开机自启动

systemctl enable nginx

systemctl disable nginx