yum remove mysql mysql-server mysql-libs compat-mysql51

rm -rf /var/lib/mysql

rm /etc/my.cnf

查看是否还有mysql软件：

rpm -qa|grep mysql

有的话继续删除

RPM方式安装MySQL5.6

a. 检查MySQL及相关RPM包，是否安装，如果有安装，则移除(rpm –e 名称)

1

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

2

mysql-libs-5.1.66-2.el6_3.x86_64

3

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

b. 下载Linux对应的RPM包，如：CentOS6.4_64对应的RPM包，如下：

1

[root@localhost rpm]# ll

2

total 74364

3

-rw-r--r--. 1 root root 18442536 Dec 11 20:19 MySQL-client-5.6.15-1.el6.x86_64.rpm

4

-rw-r--r--. 1 root root  3340660 Dec 11 20:06 MySQL-devel-5.6.15-1.el6.x86_64.rpm

5

-rw-r--r--. 1 root root 54360600 Dec 11 20:03 MySQL-server-5.6.15-1.el6.x86_64.rpm

c. 安装MySQL

1

[root@localhost rpm]# rpm -ivh MySQL-server-5.6.15-1.el6.x86_64.rpm

2

[root@localhost rpm]# rpm -ivh MySQL-devel-5.6.15-1.el6.x86_64.rpm

3

[root@localhost rpm]# rpm -ivh MySQL-client-5.6.15-1.el6.x86_64.rpm

4

#修改配置文件位置

5

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

d. 初始化MySQL及设置密码

1

[root@localhost rpm]# /usr/bin/mysql_install_db

2

[root@localhost rpm]# service mysql start

3

[root@localhost rpm]# cat /root/.mysql_secret  #查看root账号密码

4

# The random password set for the root user at Wed Dec 11 23:32:50 2013 (local time): qKTaFZnl

5

[root@localhost ~]# mysql -uroot –pqKTaFZnl

6

mysql> SET PASSWORD = PASSWORD('123456');#设置密码为123456

7

mysql>exit

8

[root@localhost ~]# mysql -uroot -p123456

e. 允许远程登陆

01

mysql> use mysql;

02

mysql>select host,user,password from user;

03

+-----------------------+------+-------------------------------------------+

04

| host                  | user | password                                  |

05

+-----------------------+------+-------------------------------------------+

06

| localhost             | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |

07

| localhost.localdomain | root | *1237E2CE819C427B0D8174456DD83C47480D37E8 |

08

| 127.0.0.1             | root | *1237E2CE819C427B0D8174456DD83C47480D37E8 |

09

| ::1                   | root | *1237E2CE819C427B0D8174456DD83C47480D37E8 |

10

+-----------------------+------+-------------------------------------------+

11

12

mysql> update userset password=password('123456') where user='root';

13

mysql> update userset host='%' where user='root' and host='localhost';

14

mysql> flush privileges;

15

mysql>exit

f. 设置开机自启动

1

[root@localhost ~]# chkconfig mysql on

2

[root@localhost ~]# chkconfig --list | grep mysql

3

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

g. MySQL的默认安装位置

1

/var/lib/mysql/#数据库目录

2

/usr/share/mysql#配置文件目录

3

/usr/bin#相关命令目录

4

/etc/init.d/mysql#启动脚本

修改字符集和数据存储路径

配置/etc/my.cnf文件,修改数据存放路径、mysql.sock路径以及默认编码utf-8.

[client]

password        = 123456

port            = 3306

default-character-set=utf8

[mysqld]

port            = 3306

character_set_server=utf8

character_set_client=utf8

collation-server=utf8_general_ci

#(注意linux下mysql安装完后是默认：表名区分大小写，列名不区分大小写； 0：区分大小写，1：不区分大小写)

lower_case_table_names=1

#(设置最大连接数，默认为 151，MySQL服务器允许的最大连接数16384; )

max_connections=1000

[mysql]

default-character-set=utf8

查看字符集

show variables like '%collation%';

show variables like '%char%';