search
HomeDatabaseMysql TutorialDetailed introduction to uninstalling MySQL database under Linux

How to uninstall MySQL on the Linux platform? This article mainly introduces the method of uninstalling the MySQL database under Linux, which has certain reference value. Interested friends can refer to

How to uninstall the MySQL database under Linux? The following summarizes and organizes the methods of uninstalling MySQL on the Linux platform. There are three main ways to install MySQL: binary package installation (Using Generic Binaries), RPM package installation, and source code installation. Corresponding to different installation methods, the uninstallation steps are somewhat different. If there are any deficiencies or errors in the article, please point it out or add to it!

MySQL uninstallation using RPM package installation method

1. Check whether the MySQL component is installed.

[root@DB-Server 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, it means that the three components of client, server and devel of MySQL 5.6.23 version are installed.

2. Close the MySQL service before uninstalling

2.1 Method 1

[root@DB-Server init.d]# service mysql status
 MySQL running (25673)[ OK ]
[root@DB-Server init.d]# service mysql stop
 Shutting down MySQL..[ OK ]
[root@DB-Server init.d]# service mysql status
 MySQL is not running[FAILED]

2.2 Method 2

[root@DB-Server init.d]# ./mysql status
 MySQL running (26215)[ OK ]
[root@DB-Server init.d]# ./mysql stop
 Shutting down MySQL..[ OK ]
[root@DB-Server init.d]# ./mysql status
 MySQL is not running[FAILED]
[root@DB-Server init.d]#


[root@DB-Server init.d]# chkconfig --list | grep -i mysql
mysql 0:off 1:off 2:on 3:on 4:on 5:on 6:off 
[root@DB-Server init.d]#

3. Collect the folder information corresponding to MySQL

[root@DB-Server init.d]# whereis mysql
mysql: /usr/bin/mysql /usr/include/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz

It is best to use the find command to view the files related to the MySQL database for convenience later. CompletelydeleteMySQL.

[root@DB-Server 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 and delete various MySQL components

[root@DB-Server init.d]# 
[root@DB-Server init.d]# rpm -ev MySQL-devel-5.6.23-1.linux_glibc2.5
[root@DB-Server init.d]# rpm -ev MySQL-server-5.6.23-1.linux_glibc2.5
You have new mail in /var/spool/mail/root
[root@DB-Server init.d]# rpm -ev MySQL-client-5.6.23-1.linux_glibc2.5
[root@DB-Server init.d]#

5. Delete the files corresponding to MySQL Folder

Check whether each MySQL folder is clean and deleted.

[root@DB-Server init.d]# whereis mysql
mysql:
[root@DB-Server init.d]# find / -name mysql
/var/lib/mysql
/var/lib/mysql/mysql
/usr/lib64/mysql
[root@DB-Server init.d]# rm -rf /var/lib/mysql
[root@DB-Server init.d]# rm -rf /var/lib/mysql/mysql
[root@DB-Server init.d]# rm -rf /usr/lib64/mysql
[root@DB-Server init.d]#

6. Delete the mysql user and user group

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

[root@DB-Server ~]# more /etc/passwd | grep mysql
mysql:x:101:501::/home/mysql:/bin/bash
[root@DB-Server ~]# more /etc/shadow | grep mysql
mysql:!!:16496::::::
[root@DB-Server ~]# more /etc/group | grep mysql
mysql:x:501:
[root@DB-Server ~]# userdel mysql
[root@DB-Server ~]# groupdel mysql
groupdel: group mysql does not exist
[root@DB-Server ~]#

7. Confirm whether MySQL is uninstalled and deleted

[root@DB-Server init.d]# rpm -qa | grep -i mysql

Uninstall MySQL using binary package/source code installation method

If MySQL is installed using binary package , then you will not be able to find any MySQL components using the following command. So if you don’t know how to install MySQL, never use the following command to determine whether MySQL is installed

[root@DB-Server init.d]# rpm -qa | grep -i mysql

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

First check whether there is a status of the MySQL service through the process. As shown below, the MySQL service is started.

[root@DB-Server 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
[root@DB-Server init.d]# /etc/init.d/mysql.server status
MySQL running (7269)[ OK ]
[root@DB-Server init.d]# /etc/init.d/mysql.server stop
Shutting down MySQL..[ OK ]
[root@DB-Server init.d]# /etc/init.d/mysql.server status
MySQL is not running[FAILED]
[root@DB-Server init.d]#

2. Find the MySQL installation directory and delete it completely

[root@DB-Server init.d]# whereis mysql
 mysql: /usr/local/mysql
 [root@DB-Server 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

[root@DB-Server init.d]# rm -rf /usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/ 
[root@DB-Server init.d]# rm -rf /usr/local/ 
[root@DB-Server init.d]# rm -rf /var/spool/mail/mysql 
[root@DB-Server init.d]#

3. Delete some

Configuration fileThe configuration file is generally /etc/my.cnf or /etc/init.d/mysql.server, depending on the specific installation configuration.

4. Delete MySQL users and user groups

[root@DB-Server ~]# id mysql 
uid=101(mysql) gid=501(mysql) groups=501(mysql) context=root:system_r:unconfined_t:SystemLow-SystemHigh 
[root@DB-Server ~]# userdel mysql

Reference materials:

Detailed explanation of completely uninstalling mysql under Linux

The above is the detailed content of Detailed introduction to uninstalling MySQL database under Linux. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
图文详解mysql架构原理图文详解mysql架构原理May 17, 2022 pm 05:54 PM

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了关于架构原理的相关内容,MySQL Server架构自顶向下大致可以分网络连接层、服务层、存储引擎层和系统文件层,下面一起来看一下,希望对大家有帮助。

mysql的msi与zip版本有什么区别mysql的msi与zip版本有什么区别May 16, 2022 pm 04:33 PM

mysql的msi与zip版本的区别:1、zip包含的安装程序是一种主动安装,而msi包含的是被installer所用的安装文件以提交请求的方式安装;2、zip是一种数据压缩和文档存储的文件格式,msi是微软格式的安装包。

mysql怎么去掉第一个字符mysql怎么去掉第一个字符May 19, 2022 am 10:21 AM

方法:1、利用right函数,语法为“update 表名 set 指定字段 = right(指定字段, length(指定字段)-1)...”;2、利用substring函数,语法为“select substring(指定字段,2)..”。

mysql怎么替换换行符mysql怎么替换换行符Apr 18, 2022 pm 03:14 PM

在mysql中,可以利用char()和REPLACE()函数来替换换行符;REPLACE()函数可以用新字符串替换列中的换行符,而换行符可使用“char(13)”来表示,语法为“replace(字段名,char(13),'新字符串') ”。

mysql怎么将varchar转换为int类型mysql怎么将varchar转换为int类型May 12, 2022 pm 04:51 PM

转换方法:1、利用cast函数,语法“select * from 表名 order by cast(字段名 as SIGNED)”;2、利用“select * from 表名 order by CONVERT(字段名,SIGNED)”语句。

MySQL复制技术之异步复制和半同步复制MySQL复制技术之异步复制和半同步复制Apr 25, 2022 pm 07:21 PM

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了关于MySQL复制技术的相关问题,包括了异步复制、半同步复制等等内容,下面一起来看一下,希望对大家有帮助。

mysql怎么判断是否是数字类型mysql怎么判断是否是数字类型May 16, 2022 am 10:09 AM

在mysql中,可以利用REGEXP运算符判断数据是否是数字类型,语法为“String REGEXP '[^0-9.]'”;该运算符是正则表达式的缩写,若数据字符中含有数字时,返回的结果是true,反之返回的结果是false。

带你把MySQL索引吃透了带你把MySQL索引吃透了Apr 22, 2022 am 11:48 AM

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了mysql高级篇的一些问题,包括了索引是什么、索引底层实现等等问题,下面一起来看一下,希望对大家有帮助。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.