Centos7上卸載重裝MariaDB數據庫

查詢所安裝的MariaDB組件：

[root@localhost logs]# rpm -qa | grep Maria*
MariaDB-server-5.5.49-1.el7.centos.x86_64
MariaDB-common-5.5.49-1.el7.centos.x86_64
MariaDB-client-5.5.49-1.el7.centos.x86_64
[root@localhost ~]#

卸載數據庫：

[root@localhost logs]# yum -y remove mari*
...
Removed:
  mariadb.x86_64 1:5.5.56-2.el7

Dependency Removed:
  mariadb-server.x86_64 1:5.5.56-2.el7

Complete!
[root@localhost ~]#

查看遺留文件：

[root@localhost ~]# ls /etc/my.cnf
/etc/my.cnf
[root@localhost ~]# ll /var/lib/mysql/
total 28700
-rw-rw---- 1 mysql mysql    16384 May  5 10:31 aria_log.00000001
-rw-rw---- 1 mysql mysql       52 May  5 10:31 aria_log_control
-rw-rw---- 1 mysql mysql 18874368 May  5 10:31 ibdata1
-rw-rw---- 1 mysql mysql  5242880 May  5 10:31 ib_logfile0
-rw-rw---- 1 mysql mysql  5242880 Oct  6  2017 ib_logfile1
drwx------ 2 mysql mysql     4096 Oct  6  2017 mysql
drwx------ 2 mysql mysql     4096 Oct  6  2017 performance_schema
[root@localhost ~]#

刪除

[root@localhost ~]# rm -rf /etc/my.cnf
[root@localhost ~]# rm -rf /var/lib/mysql/*

重新安裝

[root@localhost ~]# yum install -y mariadb mariadb-server

啓動

[root@localhost ~]# systemctl start mariadb

設置自啓動

[root@localhost ~]# systemctl start mariadb
[root@localhost ~]# systemctl enable mariadb

配置數據庫

[root@localhost ~]# mysql_secure_installation