解决远程无法登陆mysql服务器的问题和重置密码

重置密码和数据库（适合源码安装，rpm的可能不行）

 

[root@mail postfixadmin]# /usr/bin/mysql_install_db --force
Installing all prepared tables
Fill help tables

To start mysqld at boot time you have to copy support-files/mysql.server
to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:
/usr/bin/mysqladmin -u root password 'new-password'
/usr/bin/mysqladmin -u root -h mail.test.com password 'new-password'
See the manual for more instructions.

NOTE:  If you are upgrading from a MySQL <= 3.22.10 you should run
the /usr/bin/mysql_fix_privilege_tables. Otherwise you will not be
able to use the new GRANT command!

You can start the MySQL daemon with:
cd /usr ; /usr/bin/mysqld_safe &

You can test the MySQL daemon with the benchmarks in the 'sql-bench' directory:
cd sql-bench ; perl run-all-tests

Please report any problems with the /usr/bin/mysqlbug script!

The latest information about MySQL is available on the web at
[url]http://www.mysql.com[/url]
Support MySQL by buying support/licenses at [url]http://shop.mysql.com[/url]

 

2. cp support-files/mysql.server /etc/init.d/mysql（源码路径）

3 ./usr/bin/mysqld_safe &

4./etc/init.d/mysql start

5 mysqladmin -u root password "new password"

 

解决root关于本机登陆可以，远程同样密码帐户无法用mysql administrator连接

 

在使用MySQL-Front连接mysql的时候发生的这个错误
ERROR 1130: Host 192.168.88.160 is not allowed to connect to this MySQL server

1。 改表法。可能是你的帐号不允许从远程登陆，只能在localhost。这个时候只要在localhost的那台 电脑，登入mysql后，更改 “mysql” 数据库里的 “user” 表里的 “host” 项，从”localhost”改称”%”

mysql -u root -p

mysql>use mysql;

mysql>update user set host = ‘%’  where user =’root’;

mysql>flush privileges;

mysql>select ‘host’,'user’ from user where user=’root’;

现在就可以连接了！

2. 授权法。例如，你想myuser使用mypassword从任何主机连接到mysql服务器的话。

GRANT ALL PRIVILEGES ON *.* TO ‘myuser’@'%’IDENTIFIED BY ‘mypassword’ WITH GRANT OPTION;

如果你想允许用户myuser从ip为192.168.1.3的主机连接到mysql服务器，并使用mypassword作为密码

GRANT ALL PRIVILEGES ON *.* TO ‘myuser’@'192.168.1.3′IDENTIFIED BY ‘mypassword’ WITH