Centos 安装 mysql

一、检查系统是否安装其他版本的 MYSQL 数据
yum list installed | grep mysql
yum -y remove mysql-libs.x86_64

二、安装及配置
wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm
rpm -ivh mysql-community-release-el6-5.noarch.rpm
yum repolist all | grep mysql
1、安装 MYSQL 数据库
yum install mysql-community-server -y

2、设置为开机启动
chkconfig --list | grep mysqld
chkconfig mysqld on

service mysqld start

3、设置密码
/usr/bin/mysqladmin -u root password '123456'

4、修改 root 密码
mysql -uroot -p123456

mysql> use mysql;
mysql> select Host,User,Password from user where User='root';
+-----------------------+------+-------------------------------------------+
| Host | User | Password |
+-----------------------+------+-------------------------------------------+
| localhost | root | *4A82FDF1D80BA7470BA2E17FEEFD5A53D5D3B762 |
| localhost.localdomain | root | |
| 127.0.0.1 | root | |
| ::1 | root | |
+-----------------------+------+-------------------------------------------+
4 rows in set (0.00 sec)

mysql> update user set Password = password('123456') where User='root';
Query OK, 4 rows affected (0.03 sec)
Rows matched: 4 Changed: 4 Warnings: 0

mysql> select Host,User,Password from user where User='root';
+-----------------------+------+-------------------------------------------+
| Host | User | Password |
+-----------------------+------+-------------------------------------------+
| localhost | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| localhost.localdomain | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| 127.0.0.1 | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| ::1 | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
+-----------------------+------+-------------------------------------------+
4 rows in set (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)