centos6.9安装mariadb失败及解决办法

yum install MariaDB-server MariaDB-client
提示：mysql-server-5.1.73-8.el6_8.x86_64 was supposed to be removed but is not!
因为安装操作系统的时候，mysql也一块安装了，但安装MariaDB并不能卸载此前安装的mysql，导致MariaDB安装失败。
1、首先查找出安装的mysql包
    [root@centos6 ~]# rpm -qa | grep -i '^mysql-'

    mysql-server-5.1.73-8.el6_8.x86_64
2、如果mysql在开启，首先关闭
    [root@centos6 ~]# /etc/init.d/mysqld stop

    Stopping mysqld:                                           [  OK  ]
3、卸载安装的mysql包
    [root@centos6 ~]# rpm --nodeps -ev mysql-server-5.1.73-8.el6_8.x86_64
4、查看是否卸载了mysql
    [root@centos6 ~]# rpm -qa | grep -i '^mysql-'
    没有显示即没有和mysql相关的包，已经卸载。
5、重新执行MariaDB安装
    yum install MariaDB-server MariaDB-client
6、查看安装MariaDB生成的文件
    [root@centos6 ~]# rpm -ql MariaDB-server
    /etc/init.d/mysql

    /etc/logrotate.d/mysql

    /etc/my.cnf.d

    /etc/my.cnf.d/server.cnf

    ....
7、启动服务
    [root@centos6 ~]# /etc/init.d/mysql start

    Starting MySQL.180120 16:22:20 mysqld_safe Logging to '/var/lib/mysql/centos6_103.sunan.err'.

    180120 16:22:20 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

    ...                                                        [  OK  ]

    [root@centos6 ~]# ss -ntl

    State      Recv-Q Send-Q                  Local Address:Port                    Peer Address:Port 

    LISTEN     0      50                                  *:3306                               *:*     

    LISTEN     0      128                                 *:57007                              *:*     

    LISTEN     0      128                                :::111                               :::*
    看到3306端口已经开启
8、查看安装的版本
    [root@centos6 ~]# mysql --version  

    mysql  Ver 15.1 Distrib 5.5.59-MariaDB, for Linux (x86_64) using readline 5.1
 

水滴石穿，绳锯木断。