1.查看操作系统相关信息。

[root@linuxidc ~]# cat /etc/issue

CentOS release 6.5 (Final)

Kernel \r on an \m

[root@linuxidc ~]# uname -a

Linux linuxidc 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

2.创建需要下载rpm软件包的目录。

[root@linuxidc ~]# mkdir -p /taokey/tools

3.查看下是否有系统自带mysql的rpm包，如果有，需要删除自带的旧rpm包。

[root@linuxidc ~]# rpm -qa | grep mysql

mysql-libs-5.1.71-1.el6.x86_64

[root@linuxidc ~]# yum -y remove mysql-libs-5.1*

[root@linuxidc ~]# rpm -qa | grep mysql

[root@linuxidc ~]#

4.在MySQL官网下载安装MySQL-5.6.21所需的rpm软件包。

需要下载三个rpm软件包：

MySQL-client-5.6.21-1.rhel5.x86_64.rpm

MySQL-devel-5.6.21-1.rhel5.x86_64.rpm

MySQL-server-5.6.21-1.rhel5.x86_64.rpm

[root@linuxidc ~]# cd /taokey/tools/

[root@linuxidc tools]# wget http://dev.mysql.com/Downloads/MySQL-5.6/MySQL-server-5.6.21-1.rhel5.x86_64.rpm

[root@linuxidc tools]# wget http://dev.mysql.com/Downloads/MySQL-5.6/MySQL-devel-5.6.21-1.rhel5.x86_64.rpm

[root@linuxidc tools]# wget http://dev.mysql.com/Downloads/MySQL-5.6/MySQL-client-5.6.21-1.rhel5.x86_64.rpm

5.下载完之后，安装三个rpm软件包。

[root@linuxidc tools]# rpm -ivh MySQL-server-5.6.21-1.rhel5.x86_64.rpm

error: Failed dependencies:

libaio.so.1()(64bit) is needed by MySQL-server-5.6.21-1.rhel5.x86_64

libaio.so.1(LIBAIO_0.1)(64bit) is needed by MySQL-server-5.6.21-1.rhel5.x86_64

libaio.so.1(LIBAIO_0.4)(64bit) is needed by MySQL-server-5.6.21-1.rhel5.x86_64

安装MySQL-server报错，原因是没有安装libaio，系统缺少libaio.so此软件包，下边yum安装一下libaio.so软件包。

[root@linuxidc tools]# yum install -y libaio

[root@linuxidc tools]# rpm -ivh MySQL-server-5.6.21-1.rhel5.x86_64.rpm

[root@linuxidc tools]# rpm -ivh MySQL-client-5.6.21-1.rhel5.x86_64.rpm

Preparing... ########################################### [100%]

1:MySQL-client ########################################### [100%]

[root@linuxidc tools]# rpm -ivh MySQL-devel-5.6.21-1.rhel5.x86_64.rpm

Preparing... ########################################### [100%]

1:MySQL-devel ########################################### [100%]

6.修改配置文件位置。

[root@linuxidc tools]# cp /usr/share/mysql/my-default.cnf /etc/my.cnf

7.初始化MySQL及修改MySQL默认的root密码。

[root@linuxidc tools]# /usr/bin/mysql_install_db

[root@linuxidc tools]# ps -ef | grep mysql

root 2188 1 0 14:48 pts/1 00:00:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/linuxidc.pid

mysql 2303 2188 30 14:48 pts/1 00:00:02 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql/linuxidc.err --pid-file=/var/lib/mysql/linuxidc.pid

root 2331 1853 0 14:49 pts/1 00:00:00 grep mysql

[root@linuxidc tools]# service mysql start

[root@linuxidc tools]# netstat -anpt | grep 3306

tcp 0 0 :::3306 :::* LISTEN 2303/mysqld

[root@linuxidc tools]# more /root/.mysql_secret

# The random password set for the root user at Thu Apr 9 14:43:59 2015 (local time): F6K3v_xggFoLQeiN

[root@linuxidc tools]# mysql -uroot -pF6K3v_xggFoLQeiN

Warning: Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 1

Server version: 5.6.21

Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> SET PASSWORD = PASSWORD('123.com');

mysql> exit

Bye

[root@linuxidc tools]# mysql -uroot -p123.com

Warning: Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 6

Server version: 5.6.21 MySQL Community Server (GPL)

Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

8.设置MySQL服务开机自启动。

[root@linuxidc tools]# chkconfig mysql on

[root@linuxidc tools]# chkconfig mysql --list

mysql 0:off 1:off 2:on 3:on 4:on 5:on 6:off