一、检查系统是否安装老版本，有的话干掉

#yum list installed | grep mysqlmysql-libs.x86_64 5.1.73-5.el6_6 @anaconda-CentOS-201508042137.x86_64/6.7


// 卸载某一个#yum -y remove mysql-libs.x86_64

二、安装及配置

# wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm# rpm -ivh mysql-community-release-el6-5.noarch.rpm# yum install mysql-community-server -y

检查MySQL状态

service mysqld status

开启MySQL服务

service mysqld start 

重启MySQL服务

# service mysqld restart

设置为开机启动

# chkconfig --list | grep mysqld# chkconfig mysqld on

设置MySQL密码，第一次登陆不需要密码回车进入；设置本机MySQL密码及远程登录密码：

mysql> use mysql; mysql> update user set password=password(‘你设置的密码‘) where user=‘root‘ and host=‘localhost‘; mysql> GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘你设置的密码‘ WITH GRANT OPTION;mysql> flush privileges;mysql> quit

参考自：https://www.cnblogs.com/diandianxinghen/p/12942327.html