Centos6.5 yum安装MySQL5.6版本

1.新开的云服务器，需要检测系统是否自带安装mysql

[root@cpk src]# yum list installed | grep mysql
mysql-libs.x86_64       5.1.71-1.el6    @anaconda-CentOS-201311272149.x86_64/6.5

2.如若系统自带mysql，需要先移除掉已安装的版本

yum -y remove mysql-libs.x86_64

3.选择一个存放文件的目录下执行

wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm

执行该命令后，使用ls可以查看到当前目录下有一个rpm的安装包
[cpk@cpk Downloads]$ ls
mysql-community-release-el6-5.noarch.rpm

4.接着执行下面这句命令，执行后在/etc/yum.repos.d/ 这个目录下多出mysql-community-source.repo和mysql-community.repo

rpm -ivh mysql-community-release-el6-5.noarch.rpm

5.这个时候，可以用yum repolist mysql这个命令查看一下是否已经有mysql可安装文件

[root@cpk local]# yum repolist all | grep mysql
mysql-connectors-community        MySQL Connectors Community      enabled:    59
mysql-connectors-community-source MySQL Connectors Community - So disabled
mysql-tools-community             MySQL Tools Community           enabled:    65
mysql-tools-community-source      MySQL Tools Community - Source  disabled
mysql55-community                 MySQL 5.5 Community Server      disabled
mysql55-community-source          MySQL 5.5 Community Server - So disabled
mysql56-community                 MySQL 5.6 Community Server      enabled:   453
mysql56-community-source          MySQL 5.6 Community Server - So disabled
mysql57-community-dmr             MySQL 5.7 Community Server Deve disabled
mysql57-community-dmr-source      MySQL 5.7 Community Server Deve disabled

6.安装mysql 服务器命令（一路yes）：

yum install mysql-community-server

7.安装完成后，查看下mysql版本

[root@cpk local]# mysql -V
mysql  Ver 14.14 Distrib 5.6.41, for Linux (x86_64) using  EditLine wrapper

8.安装成功后，需要启动MySQL服务

service mysqld start(或/etc/init.d/mysqld start)

9.由于mysql刚刚安装完的时候，root用户的密码默认为空，所以我们需要及时用mysql的root用户登录（第一次回车键，不用输入密码），并修改密码

mysql -u root
mysql> use mysql;
mysql> update user set password=PASSWORD("这里输入root用户密码") where User='root';
mysql> flush privileges; (刷新)

10.查看mysql是否自启动,并且设置开启自启动命令

chkconfig --list | grep mysqld
chkconfig mysqld on

至此Centos6.5 数据库的安装已完成。