How to completely uninstall mysql under CentOS

This article records the complete uninstallation of MySQL under CentOS for your reference. The specific contents are as follows

1. Check whether MySQL is installed

Method 1:

[root@localhost usr]# yum list installed mysql*
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.yun-idc.com
 * extras: mirror.neu.edu.cn
 * updates: mirrors.yun-idc.com
Installed Packages
MySQL-client.x86_64 5.6.27-1.el6 installed
MySQL-devel.x86_64 5.6.27-1.el6 installed
MySQL-server.x86_64 5.6.27-1.el6 installed
[root@localhost usr]#

Method 2 ( -i : case-insensitive):

[root@localhost usr]# rpm -qa | grep -i mysql
MySQL-server-5.6.27-1.el6.x86_64
MySQL-client-5.6.27-1.el6.x86_64
MySQL-devel-5.6.27-1.el6.x86_64
[root@localhost usr]#

2. Uninstall MySQL

Uninstall 1:

[root@localhost usr]# yum remove mysql mysql-server mysql-libs compat-mysql51
[root@localhost usr]# rm -rf /var/lib/mysql
[root@localhost usr]# rm /etc/my.cnf

If mysql-devel is installed (other add commands are the same), uninstall it as follows:

[root@Tony_ts_tian init.d]# yum remove mysql mysql-devel mysql-server mysql-libs compat-mysql51

Note (for example):

mysql-5.5.39-1.el6.remi.x86_64
mysql-libs-5.5.39-1.el6.remi.x86_64
compat-mysql51-5.1.54-1.el6.remi.x86_64
mysql-server-5.5.39-1.el6.remi.x86_64

Uninstall 2 {Continue, select one of 1 and 2 (introduction here):}:

[root@localhost mysql]# rpm -aq | grep -i mysql
MySQL-server-5.6.27-1.el6.x86_64
MySQL-client-5.6.27-1.el6.x86_64
MySQL-devel-5.6.27-1.el6.x86_64
[root@localhost mysql]# rpm -e MySQL-server-5.6.27-1.el6.x86_64
[root@localhost mysql]# rpm -e MySQL-client-5.6.27-1.el6.x86_64
[root@localhost mysql]# rpm -e MySQL-devel-5.6.27-1.el6.x86_64
[root@localhost rc.d]# cd /var/lib/
[root@localhost lib]# rm -rf mysql/

Note: Delete the MySQL database directory (critical), otherwise the password will not be updated (default installation, if you customize the installation path and link path ln -s ... please delete it.)

rm -rf /var/lib/mysql

Uninstall 3:

[root@localhost usr]# whereis mysql
mysql: /usr/lib64/mysql
[root@localhost usr]# rm -rf /usr/lib64/mysql

Note: find / -name mysql

Note: Clear all directories, files, and other configurations and settings related to MySQL. If so, delete it. It is also necessary to consider that other software will not be affected.

rm -rf /usr/lib/mysql
rm -rf /usr/share/mysql

Uninstall 4:

[root@localhost usr]# rm –rf /usr/my.cnf
[root@localhost usr]# rm -rf /root/.mysql_sercret

Uninstall 5 (self-starting service):

[root@localhost usr]# chkconfig --list | grep -i mysql
[root@localhost usr]# chkconfig --del mysqld

Delete here to see your own settings: mysql/mysqld

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.

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