安裝mysql

yum -y install mysql

yum -y install mysql-server

yum -y install php-mysql

yum -y install mysql-devel

2.配置MySQL

[root@sample ~]#vim /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

3.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

4.修改密碼

[root@sampl ~]# mysql -uroot? root默認無密碼

mysql> select user,host,password from mysql.user;

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

| user | host????????????????? | password |

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

| root | localhost???????????? |????????? |

| root | ay140611163431555064z |????????? |

| root | 127.0.0.1???????????? |????????? |

|????? | localhost???????????? |????????? |

|????? | ay140611163431555064z |????????? |

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

下面是把密碼都設置成123456

mysql> set password for root@localhost=password('123456');

Query OK, 0 rows affected (0.00 sec)

mysql> set password for root@127.0.0.1=password('123456');

Query OK, 0 rows affected (0.00 sec)

mysql> set password for root@ay140611163431555064z=password('123456');

Query OK, 0 rows affected (0.00 sec)

刪除匿名賬號

mysql> delete from mysql.user where user='';

mysql> select user,host,password from mysql.user;

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

| user | host????????????????? | password????????????????????????????????? |

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

| root | localhost???????????? | *047871A860B9795D35702CA5974FA67374791CAD |

| root | ay140611163431555064z | *047871A860B9795D35702CA5974FA67374791CAD |

| root | 127.0.0.1???????????? | *047871A860B9795D35702CA5974FA67374791CAD |

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

3 rows in set (0.00 sec)

mysql> quit

設置完成

補充：設置或修改用戶密碼的另一種方法

把root的密碼設為123456，如果root已經有密碼，命令運行時會讓輸入原密碼

[root@sample ~]# mysqladmin -uroot -p password 123456

注意！！！

安裝完后，查看max_allowed_packet配置值

show VARIABLES like '%max_allowed_packet%';

如果寫1024會有問題，需要改大些

在my.cnf的[mysqld]下添加

max_allowed_packet = 20M

如果遇到遠程連接數據庫，得到報錯信息"?Lost connection to MySQL server at 'reading initial communication packet', system error: 104",那么在my.cnf的[myslqd]里增加一行：

skip-name-resolve

本文轉自 ? zl1030 ? 51CTO博客，原文鏈接:http://blog.51cto.com/zl1030/1425089

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