一、檢查服務(wù)器是否已經(jīng)安裝了MySQL

rpm -qa|grep mysql
如下所示
mysql-community-libs-compat-8.1.0-1.el7.x86_64
mysql-community-server-8.1.0-1.el7.x86_64
mysql-community-icu-data-files-8.1.0-1.el7.x86_64
mysql-community-common-8.1.0-1.el7.x86_64
php-mysqlnd-7.3.33-1.el7.remi.x86_64
mysql-community-libs-8.1.0-1.el7.x86_64
mysql-community-client-plugins-8.1.0-1.el7.x86_64
mysql-community-client-8.1.0-1.el7.x86_64

二、查看MySQL服務(wù)是否開啟

systemctl status mysqld
如下所示：
mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2024-02-20 15:24:50 CST; 9s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 30152 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 30194 (mysqld)
   Status: "Server is operational"
    Tasks: 38
   CGroup: /system.slice/mysqld.service
           └─30194 /usr/sbin/mysqld

Feb 20 15:24:45 i2MaskingCtrl systemd[1]: Starting MySQL Server...
Feb 20 15:24:50 i2MaskingCtrl systemd[1]: Started MySQL Server.

如開啟則關(guān)閉MySQL服務(wù)，執(zhí)行以下命令：

systemctl stop mysqld

三、查找含有MySQL的目錄

find / -name mysql
如下所示：
/etc/logrotate.d/mysql
/var/lib/mysql
/var/lib/mysql/mysql
/usr/bin/mysql
/usr/lib64/mysql

根據(jù)自己查找出來的目錄進(jìn)行依次刪除：

rm -rf /etc/logrotate.d/mysql /var/lib/mysql /var/lib/mysql/mysql /usr/bin/mysql /usr/lib64/mysql

還需刪除以下兩個(gè)目錄：

//mysql的配置文件
rm -rf /etc/my.cnf
//如果不刪除這個(gè)文件,則重新安裝的Mysql將無法設(shè)置password
rm -rf /var/log/mysqld.log

四、查找MySQL安裝的組件服務(wù)

rpm -qa|grep -i mysql
如下所示：
mysql-community-libs-compat-8.1.0-1.el7.x86_64
mysql-community-server-8.1.0-1.el7.x86_64
mysql-community-icu-data-files-8.1.0-1.el7.x86_64
mysql-community-common-8.1.0-1.el7.x86_64
php-mysqlnd-7.3.33-1.el7.remi.x86_64
mysql-community-libs-8.1.0-1.el7.x86_64
mysql-community-client-plugins-8.1.0-1.el7.x86_64
mysql-community-client-8.1.0-1.el7.x86_64

卸載并刪除查找出來的組件服務(wù)：文章來源地址http://www.zghlxwxcb.cn/news/detail-834181.html

rpm -ev mysql-community-libs-compat-8.1.0-1.el7.x86_64
rpm -ev mysql-community-server-8.1.0-1.el7.x86_64
rpm -ev mysql-community-icu-data-files-8.1.0-1.el7.x86_64
rpm -ev mysql-community-common-8.1.0-1.el7.x86_64
rpm -ev mysql-community-libs-8.1.0-1.el7.x86_64
rpm -ev mysql-community-client-plugins-8.1.0-1.el7.x86_64
rpm -ev mysql-community-client-8.1.0-1.el7.x86_64

注：如果刪除不了則加上--nodeps。例如：rpm -ev --nodeps mysql-community-libs-compat-8.1.0-1.el7.x86_64

五、卸載完成后檢查是否卸載成功

rpm -qa|grep -i mysql
php-mysqlnd-7.3.33-1.el7.remi.x86_64
systemctl start mysql
如報(bào)錯(cuò)Failed to start mysql.service: Unit not found.
則說明此時(shí)mysql已經(jīng)卸載干凈了。

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