1、显示密码
如:MySQL 连接远程数据库(192.168.5.116),端口“3306”,用户名为“root”,密码“123456”
C:/>mysql -h 192.168.5.116 -P 3306 -u root -p123456
2、隐藏密码
如:MySQL 连接本地数据库,用户名为“root”,
C:/>mysql -h localhost -u root -p
Enter password:
二、配置mysql允许远程链接
默认情况下,mysql帐号不允许从远程登陆,只能在localhost登录。本文提供了二种方法设置mysql可以通过远程主机进行连接。
一、改表法
在localhost登入mysql后,更改 "mysql" 数据库里的 "user" 表里的 "host" 项,将"localhost"改称"%"
例如:
#mysql -u root -p
Enter password:
……
mysql>
mysql>update user set host = '%' where user = 'root'
mysql>select host, user from user
二、授权法
例如: 你想myuser使用mypassword(密码)从任何主机连接到mysql服务器的话。
mysql>GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%'IDENTIFIED BY 'mypassword' WITH GRANT OPTION
如果你想允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器,并使用mypassword作为密码
mysql>GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3'IDENTIFIED BY
'mypassword' WITH GRANT OPTION
mysql>FLUSH PRIVILEGES
使修改生效,就可以了
常见问题:
1、在采用法二授权法之后,无法在本地登录mysql(如:#mysql -u root -p -h 192.168.5.116
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'loadb116' (using password: YES)
上例中loadb116是主机名.
解决方法:
1、这时可以使用:mysql -u root -p 登录,进入到mysql后。
mysql>grant all privileges on *.* to 'root'@'loadb116'
identified by '123456' with grant option
Query OK, 0 rows affected (0.00 sec)
mysql>flush privileges
Query OK, 0 rows affected (0.00 sec)
2、在本地使用ip地址登录
# mysql -u root -p -h 192.168.5.116
Enter password:
Welcome to the MySQL monitor. Commands end with or /g.
Your MySQL connection id is 60
Server version: 5.1.45 MySQL Community Server (GPL)
Type 'help' or '/h' for help. Type '/c' to clear the buffer.
mysql>
MySQL远程访问权限,允许远程连接的开启
1、登陆mysql数据库
mysql -u root -p
查看user表 www.2cto.com
mysql>use mysql
Database changed
mysql>select host,user,password from user
+--------------+------+-------------------------------------------+
| host | user | password |
+--------------+------+-------------------------------------------+
| localhost| root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |
| 192.168.1.1 | root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |
+--------------+------+-------------------------------------------+
2 rows in set (0.00 sec)
可以看到在user表中已创建的root用户。host字段表示登录的主机,其值可以用IP,也可用主机名,
(1)有时想用本地IP登录,那么可以将以上的Host值改为自己的Ip即可。
2、实现远程连接(授权法)
将host字段的值改为%就表示在任何客户端机器上能以root用户登录到mysql服务器,建议在开发时设为%。
update user set host = ’%’ where user = ’root’
将权限改为ALL PRIVILEGES
mysql>use mysql
Database changed
mysql>grant all privileges on *.* to root@'%' identified by "root"
Query OK, 0 rows affected (0.00 sec) www.2cto.com
mysql>select host,user,password from user
+--------------+------+-------------------------------------------+
| host | user | password |
+--------------+------+-------------------------------------------+
| localhost| root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |
| 192.168.1.1 | root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |
| %| root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |
+--------------+------+-------------------------------------------+
3 rows in set (0.00 sec)
这样机器就可以以用户名root密码root远程访问该机器上的MySql.
3、实现远程连接(改表法)
use mysql
update user set host = '%' where user = 'root'
这样在远端就可以通过root用户访问Mysql.
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