好记性不如烂笔头，记录一下
1 yum list installed | grep mysql #检查是否安装了mysql
1 yum -y remove mysql-libs.x86_64 #卸载已经安装的版本
给centos增加较新的源
1 wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm 2 yum localinstall mysql-community-release-el6-5.noarch.rpm 3 yum repolist all | grep mysql 4 yum-config-manager --disable mysql55-community 5 yum-config-manager --disable mysql56-community 6 yum-config-manager --enable mysql57-community-dmr 7 yum repolist enabled | grep mysql
安装mysql服务器命令
1 yum install mysql-community-server
启动mysql服务器
1 service mysqld start
查看mysql是否自启动,并且设置开启自启动命令
1 chkconfig --list | grep mysqld 2 chkconfig mysqld on
mysql安全设置命令
1 mysql_secure_installation
原文：http://www.cnblogs.com/xiangxi/p/6260265.html