CentOS7 yum安装MySQL

1.rpm -qa | grep mariadb把自带的mariadb卸载

  yum remove mariadb-libs-5.5.44-2.el7.centos.x86_64

2.下载mysql的repo源.

  mkdir /mysql

   cd /mysql

   wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

   ls 看一下多出一个mysql-community-release-el7-5.noarch.rpm

  rpm -ivh mysql-community-release-el7-5.noarch.rpm 安装

   装完之后会多两个东西,分别是:

   /etc/yum.repos.d/mysql-community.repo

   /etc/yum.repos.d/mysql-community-source.repo

3.安装mysql

   yum install mysql-server

4.把/var/lib/mysql的拥有者改为当前用户

   chown -R user:usergroup /var/lib/mysql

   重启

   /bin/systemctl restart  mysqld.service

5.重置root密码

   mysql -u root

   use mysql;

   update user set password=password('XXXX') where user='root';

6.如果开了防火墙把3306端口开放.