［转贴］ubuntu上数据库刚安装访问问题

时间：2009-04-02 来源：nanlover

原帖地址：http://www.91linux.com/html/article/database/mysql/20081129/14084.html

 用如下命令在ubuntu上安装了mysql之后
 sudo apt-get install mysql-server
 sudo apt-get install mysql-client

sudo /etc/init.d/mysql start 如果

rpm安装完毕后，直接用 /usr/bin/mysqladmin -u root password “newpasswd”修改密码后出现错误信息。解释：YES,说明密码没有问题。可能是限制不让在本地登陆。于是实用添加 -h 61.139.xx.252绕过本地测试，也未成功

[root@fms1 ok]# mysql -u root -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[root@fms1 ok]# mysql -h 61.139.xx.252 -u root -p
Enter password:
ERROR 1130 (00000): Host '61.139.76.252' is not allowed to connect to this MySQL server

注释： 1130报错信息说明不允许远程访问。没有给该用户授权
然后重新修改密码后可以正常访问：

[root@fms1 ok]# /etc/init.d/mysql stop
Shutting down MySQL.[确定]
[root@fms1 ok]# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
[1] 6699
[root@fms1 ok]# mysql -u root mysql .......
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| test               |
+--------------------+
3 rows in set (0.00 sec) mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables;
+---------------------------+
| Tables_in_mysql           |
+---------------------------+
............................. ............................. .............................
| user                      |
+---------------------------+
17 rows in set (0.00 sec) mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings: 0 mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec) mysql> quit
Bye 注：到此修改密码完成。 [root@fms1 ok]# killall -9 mysqld
[root@fms1 ok]# /etc/init.d/mysql start
Starting MySQL[确定]
[root@fms1 ok]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.0.45-community MySQL Community Edition (GPL) Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> GRANT ALL PRIVILEGES ON *.* TO root@'%' IDENTIFIED BY "newpasswd"; #用于给用户授权。
Query OK, 0 rows affected (0.00 sec) mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec) mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A Database changed
mysql> update user set user="newname" where user="root"; #改名。
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4 Changed: 4 Warnings: 0 mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec) mysql> quit
Bye 支持完成了修改密码，授权，改名的工作。
[root@fms1 ok]# mysql -u centos -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.0.45-community MySQL Community Edition (GPL) Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> show databases;

错误信息没有了。总结：错误提示:
# mysql -uroot -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
解决方法：1

方法一：
# /etc/init.d/mysql stop
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
# mysql -u root mysql
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
mysql> FLUSH PRIVILEGES;
mysql> quit

# /etc/init.d/mysql restart
# mysql -uroot -p
Enter password: <输入新设的密码newpassword>
完成。

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)