1 ~]# systemctl start mysql.service
要启动MySQL数据库是却是这样的提示
1 ~]# Failed to start mysqld.service: Unit not found
解决方法如下:
首先需要安装mysql-server
1 ~]# yum install -y mysql-server
启动服务
1 ~]# systemctl start mysqld.service
添加到开机启动
1 ~]# systemctl enable mysqld.service
之后连接数据库 mysql 命令
CentOS7安装MySQL报错Failed to start mysqld.service: Unit not found解决办法
原文：https://www.cnblogs.com/kai0438/p/12090722.html