Access denied for ** 报错解决办法

最新推荐文章于 2025-06-04 10:27:32 发布

evil_darker

最新推荐文章于 2025-06-04 10:27:32 发布

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文章标签： access mysql user warnings table query

本文链接：https://blog.youkuaiyun.com/evil_darker/article/details/5351122

本文详细介绍了如何在root用户下修改MySQL管理员密码，并通过多种步骤确保密码更改生效，包括重启MySQL服务、重新登录验证、授权操作等。解决了在本地和远程访问中遇到的权限问题。

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方法一：在 root 用户下：
# /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。

以下部分是别人的相关信息整理：懒得自己整理，就直接粘过来了：

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> 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 )