CentOS安装mysql

发表于:2013-05-23来源:博客园作者:qileilove点击数: 标签:MySQL
安装MySQL。 [root@sample ~]# yum -y install mysql-server ← 安装MySQL [root@sample ~]# yum -y install php-mysql ← 安装php-mysql 配置MySQL [root@sample ~]#gedit /etc/my.cnf ← 编辑MySQL的配置文件 [my

  安装MySQL

  [root@sample ~]# yum -y install mysql-server  ← 安装MySQL

  [root@sample ~]# yum -y install php-mysql  ← 安装php-mysql

  配置MySQL

  [root@sample ~]#gedit /etc/my.cnf  ← 编辑MySQL的配置文件

  [mysqld]

  datadir=/var/lib/mysql

  socket=/var/lib/mysql/mysql.sock

  # Default to using old password format for compatibility with mysql 3.x

  # clients (those using the mysqlclient10 compatibility package).

  old_passwords=1  ← 找到这一行,在这一行的下面添加新的规则,让MySQL的默认编码为UTF-8

  default-character-set = utf8  ← 添加这一行

  然后在配置文件的文尾填加如下语句:

  [mysql]

  default-character-set = utf8

  启动MySQL服务

  [root@sample ~]# chkconfig mysqld on  ← 设置MySQL服务随系统启动自启动

  [root@sample ~]# chkconfig --list mysqld  ← 确认MySQL自启动

  mysqld 0:off 1:off 2:on 3:on 4:on 5:on 6:off  ← 如果2--5为on的状态就OK

  [root@sample ~]#/etc/rc.d/init.d/mysqld start  ← 启动MySQL服务

  Initializing MySQL database:         [ OK ]

  Starting MySQL:              [ OK ]

  MySQL初始环境设定

  [1]为MySQL的root用户设置密码

  MySQL在刚刚被安装的时候,它的root用户是没有被设置密码的。首先来设置MySQL的root密码。

  [root@sample ~]# mysql -u root  ← 用root用户登录MySQL服务器

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

  Your MySQL connection id is 2 to server version: 4.1.20

  Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

  mysql> select user,host,password from mysql.user;  ← 查看用户信息

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

  | user | host          | password |

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

  | root | localhost        |       |  ← root密码为空

  | root | sample.centospub.com  |       |  ← root密码为空

  |   | sample.centospub.com |       |

  |   | localhost       |       |

  |root | % |XXX     |

  |   |     |       |

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

  4 rows in set (0.00 sec)

  mysql> set password for root@localhost=password('在这里填入root密码');  ← 设置root密码

  Query OK, 0 rows affected (0.01 sec)

  mysql> set password for root@'sample.centospub.com'=password('在这里填入root密码');  ← 设置root密码

  Query OK, 0 rows affected (0.01 sec)

  只有设置了这个才可以,才可以通过数据库来安装网址

  mysql> set password for root@'xxx'=password('xxx');  ← 设置root密码

  Query OK, 0 rows affected (0.01 sec)

  mysql> select user,host,password from mysql.user;  ← 查看用户信息

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

  | user | host          | password     |

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

  | root | localhost        | 19b68057189b027f |  ← root密码被设置

  | root | sample.centospub.com   | 19b68057189b027f |  ← root密码被设置

  |    | sample.centospub.com   |          |

  |    | localhost        |          |

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

  4 rows in set (0.01 sec)

  mysql> exit  ← 退出MySQL服务器

  Bye

  然后,测试一下root密码有没有生效。

  [root@sample ~]# mysql -u root ← 通过空密码用root登录

  ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)  ← 出现此错误信息说明密码设置成功

  [root@localhost ~]# mysql -u root -h sample.centospub.com  ← 通过空密码用root登录

  ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)  ← 出现此错误信息说明密码设置成功

  [root@sample ~]#mysql -u root -p ← 通过密码用root登录

  Enter password:  ← 在这里输入密码

  Welcome to the MySQL monitor. Commands end with ; or \g.  ← 确认用密码能够成功登录

  Your MySQL connection id is 5 to server version: 4.1.20

  Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

  mysql> exit

  Bye

  [root@sample ~]# mysql -u root -h sample.centospub.com -p  ← 通过密码用root登录

原文转自:http://www.blogjava.net/qileilove/archive/2012/05/24/379016.html