创建服务
以CentOS为例，在/etc/systemd/system目录内创建nginx.service文件，并写入如下内容：
[Unit]
Description=The NGINX HTTP and reverse proxy server
After=network-online.target remote-fs.target nss-lookup.target
Wants=network-online.target
[Service]
Type=forking
PIDFile=/usr/local/nginx/logs/nginx.pid
ExecStartPre=/usr/bin/rm -f /usr/local/nginx/logs/nginx.pid
ExecStartPre=/usr/local/nginx/sbin/nginx -t
ExecStart=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
ExecReload=/usr/local/nginx/sbin/nginx -s reload
ExecStop=/usr/local/nginx/sbin/nginx -s quit
KillSignal=SIGQUIT
TimeoutStopSec=5
KillMode=process
PrivateTmp=true
[Install]
WantedBy=multi-user.target重新加载systemd管理器配置
sudo systemctl daemon-reload启用nginx服务
sudo systemctl enable nginx启动nginx服务
sudo systemctl start nginx