Linux uninstall MySQL

RPM Package Installation method MySQL Uninstall

1: Check if the MySQL component is installed.

[Email protected] init.d]# Rpm-qa | Grep-i MySQL

mysql-devel-5.6.23-1.linux_glibc2.5

mysql-client-5.6.23-1.linux_glibc2.5

mysql-server-5.6.23-1.linux_glibc2.5

As shown above, the client, server, and devel three components of the MySQL 5.6.23 version are installed.

2: Turn off MySQL service before uninstalling

2.1 Method 1

[[Email protected] init.d]# service MySQL status

MySQL running (25673) [OK]

[[Email protected] init.d]# service MySQL stop

Shutting down MySQL. [OK]

[[Email protected] init.d]# service MySQL status

MySQL is not running[failed]

2.2 Method 2

[Email protected] init.d]#./mysql status

MySQL running (26215) [OK]

[[email protected] init.d]#./mysql stop

Shutting down MySQL. [OK]

[Email protected] init.d]#./mysql status

MySQL is not running[failed]

[Email protected] init.d]# Chkconfig--list | Grep-i MySQL

MySQL 0:off 1:off 2:on 3:on 4:on 5:on 6:off

3. Collect the folder information for MySQL

[[email protected] init.d]# Whereis MySQL

MySQL:/usr/bin/mysql/usr/include/mysql/usr/share/mysql/usr/share/man/man1/mysql.1.gz

The best practical find command to view MySQL database related files, easy to remove MySQL after completely.

[[email protected] init.d]# Find/-name MySQL

/etc/rc.d/init.d/mysql

/etc/logrotate.d/mysql

/var/lock/subsys/mysql

/var/lib/mysql

/var/lib/mysql/mysql

/usr/include/mysql

/usr/include/mysql/mysql

/usr/bin/mysql

/usr/share/mysql

/usr/lib64/mysql

4: Uninstall remove MySQL various components

[Email protected] init.d]# Rpm-ev mysql-devel-5.6.23-1.linux_glibc2.5

[Email protected] init.d]# Rpm-ev mysql-server-5.6.23-1.linux_glibc2.5

You have new mail in/var/spool/mail/root

[Email protected] init.d]# Rpm-ev mysql-client-5.6.23-1.linux_glibc2.5

[Email protected] init.d]#

5: Delete the folder that corresponds to MySQL

Check that the individual MySQL folders are cleaned and removed cleanly.

[[email protected] init.d]# Whereis MySQL

Mysql:

[[email protected] init.d]# Find/-name MySQL

/var/lib/mysql

/var/lib/mysql/mysql

/usr/lib64/mysql

[Email protected] init.d]# Rm-rf/var/lib/mysql

[Email protected] init.d]# Rm-rf/var/lib/mysql/mysql

[Email protected] init.d]# Rm-rf/usr/lib64/mysql

6: Delete MySQL users and user groups

If necessary, delete the MySQL user and the MySQL user group.

[Email protected] ~]# MORE/ETC/PASSWD | grep MySQL

Mysql:x:101:501::/home/mysql:/bin/bash

[Email protected] ~]# More/etc/shadow | grep MySQL

Mysql:!! : 16496::::::

[Email protected] ~]# More/etc/group | grep MySQL

mysql:x:501:

[[email protected] ~]# Userdel MySQL

[[email protected] ~]# Groupdel MySQL

Groupdel:group MySQL does not exist

7: Confirm whether MySQL uninstall delete

[Email protected] init.d]# Rpm-qa | Grep-i MySQL

MySQL Uninstall binary package/source installation mode

If MySQL is installed with a binary package, then you cannot find any MySQL components with the following command. So if you don't know how to install MySQL, don't use the following command to determine if MySQL is installed

[Email protected] init.d]# Rpm-qa | Grep-i MySQL

1: Check the MySQL service and close the service process .

First through the process to see if there is a status of MySQL service, as shown below, the MySQL service is started.

[Email protected] init.d]# Ps-ef | grep MySQL

Root 4752 4302 0 22:55 pts/1 00:00:00 more/etc/init.d/mysql.server

Root 7176 1 0 23:23 pts/1 00:00:00/bin/sh/usr/local/mysql/bin/mysqld_safe--datadir=/usr/local/mysql/data- -pid-file=/usr/local/mysql/data/db-server.localdomain.pid

MySQL 7269 7176 23:23 pts/1 00:00:01/usr/local/mysql/bin/mysqld--basedir=/usr/local/mysql--datadir=/usr/loca L/mysql/data--plugin-dir=/usr/local/mysql/lib/plugin--user=mysql--log-error=/usr/local/mysql/data/ Db-server.localdomain.err--pid-file=/usr/local/mysql/data/db-server.localdomain.pid

Root 7321 4302 0 23:23 pts/1 00:00:00 grep mysql

[Email protected] init.d]#/etc/init.d/mysql.server status

MySQL running (7269) [OK]

[[email protected] init.d]#/etc/init.d/mysql.server stop

Shutting down MySQL. [OK]

[Email protected] init.d]#/etc/init.d/mysql.server status

MySQL is not running[failed]

2: Find the MySQL installation directory and remove it completely

[[email protected] init.d]# Whereis MySQL

MySQL:/usr/local/mysql

[[email protected] init.d]# Find/-name MySQL

/var/spool/mail/mysql

/usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/include/mysql

/usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/bin/mysql

/usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/data/mysql

/usr/local/mysql

[Email protected] init.d]# rm-rf/usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/

[Email protected] init.d]# rm-rf/usr/local/

[Email protected] init.d]# Rm-rf/var/spool/mail/mysql

3: Delete some configuration files

Profiles typically have/etc/my.cnf or/etc/init.d/mysql.server, depending on the configuration of the installation.

4: Delete MySQL user and user group

[[email protected] ~]# ID mysql

uid=101 (MySQL) gid=501 (MySQL) groups=501 (MySQL) context=root:system_r:unconfined_t:systemlow-systemhigh

[[email protected] ~]# Userdel MySQL

Linux uninstall MySQL