Mysqladmin:connect to server at ' localhost ' failed error: ' Access denied for user ' root ' @ ' localhost ' (using Password:yes )'

As you forget the MySQL password, forget the password solution

One, MySQL login error
Mysqladmin:connect to server at ' localhost ' failed
Error: ' Access denied for user ' root ' @ ' localhost ' (using Password:yes) '
Unable to change password
with service mysqld stop
Mysqld_safe--skip-grant-tables &
Enter Mysql-uroot-p return Enter
>use MySQL;
> Update user Set Password=password ("Newpass") where user= "root";
Change Password to Newpassord
> Flush Privileges; Update permissions
> Quit quitting
Service mysqld Restart
Mysql-uroot-p New Password entry

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Second, forget the login password of local root
Resolution process:
1. Edit/ETC/MY.CNF
Add a row in the [mysqld] configuration section
Skip-grant-tables

2. Restart MySQL after saving
[Email protected] etc]# service mysqld restart
Shutting down MySQL. [OK]
Starting MySQL. [OK]

3. Log in to the database to reset the root password
[[email protected] ~]# mysql-uroot-p MySQL
Enter Password:
Direct Carriage Enter

Welcome to the MySQL Monitor. Commands End With; or \g.
Your MySQL Connection ID is 1
Server Version:5.1.47-log Source Distribution
Copyright (c), Oracle and/or its affiliates. All rights reserved.
This software comes with absolutely NO WARRANTY. This is the free software,
And you is welcome to modify and redistribute it under the GPL v2 license

Type ' help ', ' or ' \h ' for help. Type ' \c ' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database |
+--------------------+
| Information_schema |
| MySQL |
| Test |
+--------------------+
3 Rows in Set (0.00 sec)

Execute the following statement
mysql> Update user set Password=password ("MySQL") where user= ' root ';
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)

4, delete the "skip-grant-tables" line added in the/etc/my.cnf file, restart MySQL;
With the new password will be able to log in normally;

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Describes a very useful mysql boot parameter ——--Skip-grant-tables. As the name implies, when you start MySQL, do not start the grant-tables, authorization table. What's the use of it? Of course it is useful to forget the administrator password.
Operation Method:
1. Kill the original MySQL:
Rcmysqld stop
Or:
Service Mysqld Stop
Or:
Kill-term mysqld
2. Start MySQL with command line parameters:
/usr/bin/mysqld_safe--skip-grant-tables &
3. Modify the Administrator password:
Use MySQL;
Update user set Password=password (' Yournewpasswordhere ') where user= ' root ';
Flush privileges;
Exit
4. Kill MySQL and restart MySQL

Mysqladmin:connect to server at ' localhost ' failed error: ' Access denied for user ' root ' @ ' localhost ' (using Password:yes )'