本文以centos 6.5 X64 阿里云系统为例。
1、核对mysql安装组件
[root@localhost /]# rpm -qa | grep -i mysql
MySQL-server-5.6.27-1.linux_glibc2.5.x86_64
MySQL-client-5.6.27-1.linux_glibc2.5.x86_64
MySQL-devel-5.6.27-1.linux_glibc2.5.x86_64
执行命令可以看到mysql相关组件3个，说明安装了MySQL 5.6.27这个版本的client、server、devel三个组件。
2、卸载前关闭MySQL服务
[root@localhost /]# service mysql status
SUCCESS! MySQL running (28193)
[root@localhost /]# service mysql stop
Shutting down MySQL.. SUCCESS!
[root@localhost /]# service mysql status
ERROR! MySQL is not running
确认mysql service关闭。
3、查找mysql对应的目录备用
[root@localhost /]# whereis mysql
mysql: /usr/bin/mysql /usr/lib64/mysql /usr/include/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz
[root@localhost /]# find / -name mysql
/file/www/pushservice/node_modules/mysql
/file/www/test/node_modules/mysql
/file/www/sails_test/blog/node_modules/sails-mysql/node_modules/mysql
/var/lib/mysql
/var/lib/mysql/mysql
/tmp/npm-17549-4b098944/registry.npmjs.org/mysql
/tmp/npm-16413-a75f46ff/registry.npmjs.org/mysql
/tmp/npm-27488-226cc111/registry.npmjs.org/mysql
/usr/include/mysql
/usr/include/mysql/mysql
/usr/bin/mysql
/usr/share/mysql
/usr/lib64/mysql
/etc/rc.d/init.d/mysql
/etc/logrotate.d/mysql
/root/.npm/registry.npmjs.org/mysql
/root/.npm/mysql
这些目录部分需要手工删除。
4、命令行卸载mysql组件
[root@localhost /]# rpm -ev MySQL-server-5.6.27-1.linux_glibc2.5.x86_64
[root@localhost /]# rpm -ev MySQL-client-5.6.27-1.linux_glibc2.5.x86_64
[root@localhost /]# rpm -ev MySQL-devel-5.6.27-1.linux_glibc2.5.x86_64
以上命令无提示结果。
5、手工删除mysql相关文件夹
[root@localhost /]# whereis mysql
mysql: /usr/lib64/mysql
[root@localhost /]# find / -name mysql
/file/www/pushservice/node_modules/mysql
/file/www/test/node_modules/mysql
/file/www/sails_test/blog/node_modules/sails-mysql/node_modules/mysql
/var/lib/mysql
/var/lib/mysql/mysql
/tmp/npm-17549-4b098944/registry.npmjs.org/mysql
/tmp/npm-16413-a75f46ff/registry.npmjs.org/mysql
/tmp/npm-27488-226cc111/registry.npmjs.org/mysql
/usr/lib64/mysql
/root/.npm/registry.npmjs.org/mysql
/root/.npm/mysql
[root@localhost /]# rm -rf /var/lib/mysql
[root@localhost /]# rm -rf /var/lib/mysql/mysql
[root@localhost /]# rm -rf /usr/lib64/mysql
[root@localhost /]# rm -rf /usr/my.cnf
[root@localhost /]# rm -rf /root/.mysql_sercret
[root@localhost /]# find / -name mysql
/file/www/pushservice/node_modules/mysql
/file/www/test/node_modules/mysql
/file/www/sails_test/blog/node_modules/sails-mysql/node_modules/mysql
/tmp/npm-17549-4b098944/registry.npmjs.org/mysql
/tmp/npm-16413-a75f46ff/registry.npmjs.org/mysql
/tmp/npm-27488-226cc111/registry.npmjs.org/mysql
/root/.npm/registry.npmjs.org/mysql
/root/.npm/mysql
查看下是否清理了。
注意：只要删除mysql本身相关的就可以了。其他的可能是程序相关的，不是mysql本身相关的。
6、删除mysql账号相关
[root@localhost /]# more /etc/passwd | grep mysql
mysql:x:498:498:MySQL server:/var/lib/mysql:/bin/bash
[root@localhost /]# more /etc/shadow | grep mysql
mysql:!!:16728::::::
[root@localhost /]# more /etc/group | grep mysql
mysql:x:498:
[root@localhost /]# userdel mysql
[root@localhost /]# groupdel mysql
groupdel: group 'mysql' does not exist
[root@localhost /]#
7、确认删除是否完成
[root@localhost /]# rpm -qa | grep -i mysql
[root@localhost /]#
返回为空就是删除完成了。