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!

因為安裝作業系統的時候，mysql也一塊安裝了，但安裝MariaDB並不能解除安裝此前安裝的mysql，導致MariaDB安裝失敗。

1、首先查找出安裝的mysql包

    [[email protected] ~]# rpm -qa | grep -i '^mysql-'
    mysql-server-5.1.73-8.el6_8.x86_64

2、如果mysql在開啟，首先關閉

    [[email protected] ~]# /etc/init.d/mysqld stop
    Stopping mysqld:                                           [  OK  ]

3、解除安裝安裝的mysql包

    [[email protected] ~]# rpm --nodeps -ev mysql-server-5.1.73-8.el6_8.x86_64

4、檢視是否解除安裝了mysql

    [[email protected] ~]# rpm -qa | grep -i '^mysql-'

    沒有顯示即沒有和mysql相關的包，已經解除安裝。

5、重新執行MariaDB安裝

    yum install MariaDB-server MariaDB-client

6、檢視安裝MariaDB生成的檔案

    [[email protected] ~]# rpm -ql MariaDB-server

    /etc/init.d/mysql
    /etc/logrotate.d/mysql
    /etc/my.cnf.d
    /etc/my.cnf.d/server.cnf
    ....

7、啟動服務

    [[email protected] ~]# /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  ]
    [

[email protected] ~]# 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埠已經開啟

8、檢視安裝的版本

    [[email protected] ~]# mysql --version  
    mysql  Ver 15.1 Distrib 5.5.59-MariaDB, for Linux (x86_64) using readline 5.1