CentOS_7安装MYSQL失败更换为MariaDB

当输入命令
~]# systemctl start mysql.service
要启动MySQL数据库是却是这样的提示
Failed to start mysqld.service: Unit not found
解决方法如下:
1.卸载mysql:
首先执行查看命令,看一下都安转了什么东东: rpm -qa |grep -i mysql
执行卸载命令:yum remove mysql-community mysql-community-server mysql-community-libs mysql-community-common
检查是否卸载干净:rpm -qa |grep -i mysql
卸载掉刚才未卸载掉的部分:yum remove [软件包名称(不含版本号)]
再进行一遍检查:rpm -qa |grep -i mysql
查看mysql文件目录:find / -name mysql
删除掉该文件:rm -rf [路径/文件]
再查看mysql文件目录:find / -name mysql
完成
引用:https://www.cnblogs.com/Lenbrother/articles/6203620.html
2.安装mariadb:
  ~]# yum install -y mariadb-server
  启动服务
  ~]# systemctl start mariadb.service
  添加到开机启动
  ~]# systemctl enable mariadb.service
进行一些安全设置,以及修改数据库管理员密码
  ~]# mysql_sceure_installation
  引用:https://blog.csdn.net/yyyyu3/article/details/80090668

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