CentOS7版本下如何卸载MySQL5.7_os7 删除mysql5.7.28-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_47849816/article/details/108432954

本文详细介绍了在CentOS7系统中彻底卸载MySQL5.7的方法，包括检查MySQL安装状态、停止MySQL服务、卸载所有MySQL组件及清理残留文件等步骤，确保系统中不再存留任何MySQL相关文件。

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CentOS7版本下如何卸载MySQL5.7

1. 查看是否安装了MySQL

[root@hadoop102 software]# rpm -qa | grep mysql
mysql-community-libs-5.7.28-1.el7.x86_64
mysql-community-client-5.7.28-1.el7.x86_64
mysql-community-common-5.7.28-1.el7.x86_64
mysql-community-libs-compat-5.7.28-1.el7.x86_64
mysql-community-server-5.7.28-1.el7.x86_64

2.查看MySQL是否启动，若启动，则将其关闭

[root@hadoop102 software]# systemctl status mysqld
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since 六 2020-09-05 23:01:54 CST; 17min ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 7445 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=0/SUCCESS)
  Process: 7427 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 7448 (mysqld)
   CGroup: /system.slice/mysqld.service
           └─7448 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid

9月 05 23:01:53 hadoop102 systemd[1]: Starting MySQL Server...
9月 05 23:01:54 hadoop102 systemd[1]: Started MySQL Server.

关闭MySQL
[root@hadoop102 software]# systemctl stop mysqld

3. 卸载MySQL安装组件

由于Mysql各个组件存在依赖关系，所以一般情况下要按顺序卸载，否则会出现报错。但是用下面这条卸载命令就不用担心上述依赖问题，而且一条命令搞定

[root@hadoop102 software]# rpm -qa | grep -i -E mysql\|mariadb | xargs -n1 sudo rpm -e --nodeps

4. 卸载完成后使用find命令来查找系统中存在的mysql文件夹，并逐个删除文件夹路径

查看是否卸载完成
[root@hadoop102 software]# rpm -qa | grep mysql

[root@hadoop102 software]#  sudo find / -name mysql
/etc/logrotate.d/mysql
/var/lib/mysql
/var/lib/mysql/mysql
/usr/share/mysql
/usr/bin/mysql
/usr/lib64/mysql

删除命令
[root@hadoop102 software]# rm -rf /etc/logrotate.d/mysql /var/lib/mysql /var/lib/mysql/mysql /usr/share/mysql /usr/bin/mysql /usr/lib64/mysql

删除日志文件
[root@hadoop102 software]# rm -rf /var/log/mysqld.log