1、查看MySQL是否安裝
方式1:
[root@localhost 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 usr]#
方式2( -i :不區分大小寫)：
[root@localhost 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 usr]#
2、卸載過
-devel(其他一樣add command)，卸載為：[root@localhost usr]# yum remove mysql mysql-server mysql-libs compat-mysql51 [root@localhost usr]# rm -rf /var/lib/mysql [root@localhost usr]# rm /etc/my.cnf
mysql-5.5.39-1.el6.remi.x86_64
mysql-libs-5.5.39-1.el6.remi. x86_64compat-mysql51-5.1.54-1.el6.remi.x86_64
mysql-server-5.5.39-1.el6.remi.x86_64
[root@Tony_ts_tian init.d]# yum remove mysql mysql-devel mysql-server mysql-libs compat-mysql51
[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/
註：find / -name mysql
註：清空相關mysql的所有目錄以及文件和其他配置和設定等。如果有，則刪除。也必須考慮其他軟體不去影響。rm -rf /usr/lib/mysql
rm -rf /usr/share/mysql卸載4：
[root@localhost usr]# whereis mysql mysql: /usr/lib64/mysql [root@localhost usr]# rm -rf /usr/lib64/mysql
卸載5（自啟動服務）：
[root@localhost usr]# rm –rf /usr/my.cnf [root@localhost usr]# rm -rf /root/.mysql_sercret
[root@localhost usr]# chkconfig --list | grep -i mysql [root@localhost usr]# chkconfig --del mysqld
