查询服务是否开机启动
systemctl is-enabled servicename.service
开机运行服务
systemctl enable *.service
取消开机运行
systemctl disable *.service
启动服务
systemctl start *.service
停止服务
systemctl stop *.service
重启服务
systemctl restart *.service
重新加载服务配置文件
systemctl reload *.service
查询服务运行状态
systemctl status *.service