CentOS下MySQL的完全卸载

1：查看MySQL是否安装:

方式1: [plain] view plain copy

[root[@localhost](https://my.oschina.net/u/570656) 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](https://my.oschina.net/u/570656) usr]#

方式2( -i :不区分大小写)： [plain] view plain copy

[root[@localhost](https://my.oschina.net/u/570656) 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](https://my.oschina.net/u/570656) usr]#   

[root[@localhost](https://my.oschina.net/u/570656) usr]# rm -rf /var/lib/mysql  

[root@localhost usr]# rm /etc/my.cnf

若是装了mysql-devel(其余同样add command)，卸载为： [plain] view plain copy

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

注（例如）: 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 卸载2{继续，1，2选择一种（此处为介绍）：}: [plain] view plain copy

[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/

注:删除MySQL数据库目录(关键) ，不然password不更新（默认安装，若是自定义安装路径和连接路径ln -s ……请删除。） rm -rf /var/lib/mysql 卸载3： [plain] view plain copy

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

注：find / -name mysql 注：清空相关mysql的全部目录以及文件和其余配置和设置等。若是有，则删除。也必须考虑其余软件不去影响。 rm -rf /usr/lib/mysql rm -rf /usr/share/mysql 卸载4： [plain] view plain copy

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

卸载5（自启服务）： [plain] view plain copy

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

[plain] view plain copy

此处删除看本身设置:mysql/mysqld