CentOS 7 systemd service开机启动设定

#vi /etc/systemd/system/xxx.service

 [Unit]
 Description=startup script test

 [Service]
 Type=simple
 ExecStart=/usr/local/bin/xxx/xxx.sh
 Restart=always
 # RestartSec=
 # TimeoutSec=

 [Install]
 WantedBy=multi-user.target

#systemctl enable xxx.service

参考：http://www.ruanyifeng.com/blog/2016/03/systemd-tutorial-commands.html