下载MysqL-server-5.6.33-1.rhel5.x86_64.rpm与MysqL-client-5.6.33-1.rhel5.x86_64.rpm

http://dev.mysql.com/downloads/file/?id=464994

http://dev.mysql.com/downloads/file/?id=465025

在/usr/local/src/下创建MysqL目录
[root@localhost src]# mkdir MysqL
将两个rpm文件拷贝到MysqL目录下，进行安装：

[root@localhost MysqL]# rpm -ivh MysqL-server-5.6.33-1.rhel5.x86_64.rpm

[root@localhost MysqL]# rpm -ivh MysqL-client-5.6.33-1.rhel5.x86_64.rpm

安装后，启动MysqL

[root@localhost MysqL]# /etc/init.d/MysqL start
Starting MysqL. [ OK ]
成功启动

使用root登录MysqL

[root@localhostbin]# MysqL -u root
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password:NO)

查看/root/.MysqL_secret文件，找到临时密码

[root@localhostbin]# cat /root/.MysqL_secret
# The random password set for the root user at Mon Oct 10 18:25:50 2016 (localtime): Li9uM0_VvslGmjt8

#The random password set for the root user at Mon Oct 10 18:53:29 2016 (localtime): EQnYTpOworiyqYm6

[root@localhostbin]# MysqL -u root -p EQnYTpOworiyqYm6##临时密码

Enterpassword:EQnYTpOworiyqYm6##临时密码

提示密码过期

处理方法：

打开/root/.MysqL_secret文件，添加一个随机密码：Abcd1234

[root@localhostbin]# sudo cat /root/.MysqL_secret
# The random password set for the root user at Mon Oct 10 18:25:50 2016 (localtime): Li9uM0_VvslGmjt8

#The random password set for the root user at Mon Oct 10 18:53:29 2016 (localtime): EQnYTpOworiyqYm6
Abcd1234
[root@localhost bin]# MysqL -uroot -p Abcd1234
Enter password:
ERROR 1049 (42000): Unknown database 'Abcd1234'
提示Abcd1234数据库不存在，果断将'Abcd1234'修改为'MysqL'，保存退出

进行下列操作，修改root用户的密码

1.停止服务

[root@localhostbin]# /etc/init.d/MysqL stop

Shuttingdown MysqL.. [ OK ]

2.进入MysqLd_safe

[root@localhostbin]# MysqLd_safe --skip-grant-tables & ##屏幕打印下列信息
[1] 32329
[root@localhost bin]# 161010 19:47:50 MysqLd_safe Logging to'/var/lib/MysqL/localhost.localdomain.err'.
161010 19:47:50 MysqLd_safe Starting MysqLd daemon with databases from/var/lib/MysqL
//在此光标处输入如下命令：

MysqL--user root MysqL

//屏幕打印如下信息：

Readingtable information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Welcometo the MysqL monitor. Commands end with ; or \g.
Your MysqL connection id is 1
Server version: 5.6.33 MysqL Community Server (GPL)

Copyright(c) 2000,2016,Oracle and/or its affiliates. All rights reserved.

Oracleis 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>##证明成功登录

3.修改root用户的密码

MysqL>SELECT* FROM user; ##之后更新root用户的密码

MysqL>updateuser SET Password = PASSWORD('root') WHERE User = 'root';

MysqL>flushprivileges;

MysqL>exit;

4.再次使用root登录，密码root

[root@localhostbin]# MysqL -u root -p

Enterpassword:

Welcometo the MysqL monitor. Commands end with; or \g.

YourMysqL connection id is 8

Serverversion: 5.6.33 MysqL Community Server (GPL)

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

Oracleis 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> ##登录成功