RPM包安裝方式的MySQL解除安裝

1： 檢查是否安裝了MySQL元件。

[[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

如上所示，說明安裝了MySQL 5.6.23這個版本的client、server、devel三個元件。

2： 解除安裝前關閉MySQL服務

2.1 方法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 方法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]# 

[[email protected] init.d]# chkconfig --list | grep -i mysql

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

[[email protected] init.d]# 

3. 收集MySQL對應的資料夾資訊

[[email protected] init.d]# whereis mysql

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

最好實用find命令檢視MySQL資料庫相關的檔案，方便後面徹底刪除MySQL。

[[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： 解除安裝刪除MySQL各類元件

[[email protected] init.d]# 

[[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：刪除MySQL對應的資料夾

檢查各個MySQL資料夾是否清理刪除乾淨。

[[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

[[email protected] init.d]# 

6：刪除mysql使用者及使用者組

如果有必要，刪除mysql使用者以及mysql使用者組。

[[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

[[email protected] ~]# 

7：確認MySQL是否解除安裝刪除

[[email protected] init.d]# rpm -qa | grep -i mysql

 刪除中報錯

[[email protected] ~]$ rpm -qa|grep mysql
mysql-libs-5.1.52-1.el6_0.1.x86_64
[[email protected] ~]$ rpm -e mysql-libs-5.1.52-1.el6_0.1.x86_64
error: Failed dependencies:
        libmysqlclient.so.16()(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64
        libmysqlclient.so.16(libmysqlclient_16)(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64
        mysql-libs is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64
[[email protected] ~]$ rpm -e postfix-2:2.6.6-2.2.el6_1.x86_64
error: package postfix-2:2.6.6-2.2.el6_1.x86_64 is not installed

解決辦法：

rpm -e --nodeps mysql-libs-5.1.52-1.el6_0.1.x86_64

二進位制包/原始碼安裝方式的MySQL解除安裝

如果是採用二進位制包安裝的MySQL，那麼你用下面命令是找不到任何MySQL元件的。所以如果你不知道MySQL的安裝方式，千萬不要用下面命令來判別是否安裝了MySQL

[[email protected] init.d]# rpm -qa | grep -i mysql

1： 檢查MySQL服務並關閉服務程序。

首先通過程序檢視是否有MySQL的服務的狀態, 如下所示，MySQL服務是啟動的。

[[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 15 23:23 pts/1    00:00:01 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/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]

[[email protected] init.d]# 

2： 查詢MySQL的安裝目錄並徹底刪除

[[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

[[email protected] init.d]# 

3： 刪除一些配置檔案

配置檔案一般有/etc/my.cnf 或/etc/init.d/mysql.server，視具體安裝配置情況而定。

4：刪除MySQL使用者以及使用者組

[[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

1.https://www.cnblogs.com/kerrycode/p/4364465.html

2.http://blog.csdn.net/frinder/article/details/8165748