今天在启动mysql时出现以下问题：

[root@www ~]# mysql -u root -p Enter password: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

网上的答案是各种各样的，最终解决问题的方法总结为以下，好多都是没有设置初始密码造成此问题的。

解决方法如下：

[root@www ~]# service mysqld stop #先关闭mysql服务 Stopping mysqld: [ OK ] [root@www ~]# mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) [root@www ~]# mysql -u root -p #关闭服务后又出现如下问题 Enter password: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) [root@www ~]# mysql -u root mysql #键入此命令进入mysql Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 1 Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> update user set password=password('123') where user='root' and host='localhost'; ---->修改root的密码 Query OK, 1 row affected (0.04 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> flush priviledge; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'priviledge' at line 1 mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> q Bye [root@www ~]# mysql -u root -p ------>重新进入 Enter password: Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 2 Server version: 5.1.73 Source distribution Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> q Bye

到此就完了！！

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