CentOS安裝mysql

發表于:2013-05-23來源:博客園作者:qileilove點擊數: 標簽:MySQL
安裝MySQL。 [root@sample ~]# yum -y install mysql-server ← 安裝MySQL [root@sample ~]# yum -y install php-mysql ← 安裝php-mysql 配置MySQL [root@sample ~]#gedit /etc/my.cnf ← 編輯MySQL的配置文件 [my

  安裝MySQL。

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

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

  配置MySQL

  [root@sample ~]#gedit /etc/my.cnf  ← 編輯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  ← 找到這一行,在這一行的下面添加新的規則,讓MySQL的默認編碼為UTF-8

  default-character-set = utf8  ← 添加這一行

  然后在配置文件的文尾填加如下語句:

  [mysql]

  default-character-set = utf8

  啟動MySQL服務

  [root@sample ~]# chkconfig mysqld on  ← 設置MySQL服務隨系統啟動自啟動

  [root@sample ~]# chkconfig --list mysqld  ← 確認MySQL自啟動

  mysqld 0:off 1:off 2:on 3:on 4:on 5:on 6:off  ← 如果2--5為on的狀態就OK

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

  Initializing MySQL database:         [ OK ]

  Starting MySQL:              [ OK ]

  MySQL初始環境設定

  [1]為MySQL的root用戶設置密碼

  MySQL在剛剛被安裝的時候,它的root用戶是沒有被設置密碼的。首先來設置MySQL的root密碼。

  [root@sample ~]# mysql -u root  ← 用root用戶登錄MySQL服務器

  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;  ← 查看用戶信息

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

  | user | host          | password |

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

  | root | localhost        |       |  ← root密碼為空

  | root | sample.centospub.com  |       |  ← root密碼為空

  |   | sample.centospub.com |       |

  |   | localhost       |       |

  |root | % |XXX     |

  |   |     |       |

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

  4 rows in set (0.00 sec)

  mysql> set password for root@localhost=password('在這里填入root密碼');  ← 設置root密碼

  Query OK, 0 rows affected (0.01 sec)

  mysql> set password for root@'sample.centospub.com'=password('在這里填入root密碼');  ← 設置root密碼

  Query OK, 0 rows affected (0.01 sec)

  只有設置了這個才可以,才可以通過數據庫來安裝網址

  mysql> set password for root@'xxx'=password('xxx');  ← 設置root密碼

  Query OK, 0 rows affected (0.01 sec)

  mysql> select user,host,password from mysql.user;  ← 查看用戶信息

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

  | user | host          | password     |

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

  | root | localhost        | 19b68057189b027f |  ← root密碼被設置

  | root | sample.centospub.com   | 19b68057189b027f |  ← root密碼被設置

  |    | sample.centospub.com   |          |

  |    | localhost        |          |

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

  4 rows in set (0.01 sec)

  mysql> exit  ← 退出MySQL服務器

  Bye

  然后,測試一下root密碼有沒有生效。

  [root@sample ~]# mysql -u root ← 通過空密碼用root登錄

  ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)  ← 出現此錯誤信息說明密碼設置成功

  [root@localhost ~]# mysql -u root -h sample.centospub.com  ← 通過空密碼用root登錄

  ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)  ← 出現此錯誤信息說明密碼設置成功

  [root@sample ~]#mysql -u root -p ← 通過密碼用root登錄

  Enter password:  ← 在這里輸入密碼

  Welcome to the MySQL monitor. Commands end with ; or \g.  ← 確認用密碼能夠成功登錄

  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  ← 通過密碼用root登錄

原文轉自:http://www.blogjava.net/qileilove/archive/2012/05/24/379016.html

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