1、环境

CentOS-6.4

MysqL 5.7

2、下载MysqL http://dev.mysql.com/downloads/mysql/（个人认为centos6即下载el6版本，centos7下载el7版本）

MysqL-community-client-5.7.12-1.el6.i686.rpm

MysqL-community-common-5.7.12-1.el6.i686.rpm

MysqL-community-libs-5.7.12-1.el6.i686.rpm

MysqL-community-server-5.7.12-1.el6.i686.rpm

3、安装

3.1、删除已安装MysqL 包

# rpm -qa|grep MysqL

MysqL-libs-5.1.66-2.el6_3.i686

# rpm -e --nodeps MysqL-libs-5.1.66-2.el6_3.i686

3.2 使用rpm 命令安装（注意安装顺序）

安装MysqL

#rpm -hiv MysqL-community-common-5.7.12-1.el6.i686.rpm

#rpm -hiv MysqL-community-libs-5.7.12-1.el6.i686.rpm

#rpm -hiv MysqL-community-client-5.7.12-1.el6.i686.rpm

#rpm -hiv MysqL-community-server-5.7.12-1.el6.i686.rpm

4、启动MysqL

# service MysqLd start

5、MysqL5.7 开始有默认的密码

# cat /var/log/MysqLd.log|grep 'temporary password'

2016-06-21T20:44:15.278096Z 1 [Note] A temporary password is generated for root@localhost: =g0tde)VFWqE

初始密码为：=g0tde)VFWqE

6、登录

# MysqL -uroot -p

输入密码

登录后修改默认密码（MysqL密码有安全要求，要求有大小写特殊字符）：

MysqL> SET PASSWORD = PASSWORD('Abc123!@#');

也可更改默认密码强度

set global validate_password_policy=0;

7、授权远程连接

MysqL>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'Abc123!@#' WITH GRANT OPTION;

MysqL>FLUSH   PRIVILEGES;

说明：如果远程连接不上，关闭防火墙。

8、设置自启动

# chkconfig --add MysqLd

# chkconfig --level 2345 MysqLd