运用systemctl命令进行MYSQL相关操作
启动mysql服务
systemctl start mysqld.service
停止mysql服务
systemctl stop mysqld.service
重启mysql服务
systemctl restart mysqld.service
查看mysql服务当前状态
systemctl status mysqld.service
设置mysql服务开机自启动
systemctl enable mysqld.service
停止mysql服务开机自启动
systemctl disable mysqld.service