腾讯云服务器安装mysql

https://blog.csdn.net/weixin_45065573/article/details/106739398

https://blog.csdn.net/sinat_40356718/article/details/78618514

https://www.jianshu.com/p/7b8c4dea6829

1.rpm -qa|grep mysql*
2.rpm -qa|grep -i mysql
3.yum -y remove MySQL-*
4.yum -y remove MySQL-*

5. find / -name mysql

6.rpm -qa | grep -i mysql
7.yum remove xx
8.rpm -qa | grep -i mysql
9.whereis mysql
10.rm –rf /usr/lib/mysql
11.rpm -qa | grep -i mysql
12.yum list installed | grep mysql
13.yum -y remove mysql-libs.x86_64
14,wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
15.yum localinstall mysql-community-release-el6-5.noarch.rpm
16.yum repolist all | grep mysql
17.yum-config-manager --disable mysql55-community
18.yum-config-manager --disable mysql56-community
19.yum-config-manager --enable mysql57-community-dmr
19.yum repolist all | grep mysql