错误1045(28000):拒绝访问用户'root'@'localhost'(使用密码:YES)

我一直在按照手册在Ubuntu上安装软件套件。我完全不了解MySQL。我已经在我的Ubuntu上完成了以下安装。

sudo apt-get update
sudo apt-get install mysql-server-5.5
sudo apt-get install mysql-client-5.5
sudo apt-get install mysql-common
sudo apt-get install glade
sudo apt-get install ntp

然后我做了

cd ~/Desktop/iPDC-v1.3.1/DBServer-1.1
mysql -uroot -proot <"Db.sql"

我最终得到以下错误消息。

错误1045(28000):拒绝访问用户'root'@'localhost'(使用密码:YES)

我该如何修复它并继续?

当前回答

我可以通过执行这条语句来解决这个问题

sudo dpkg-reconfigure mysql-server-5.5

这将改变根密码。

2014-03-18 03:37:26

其他回答

注意:对于MySQL 5.7+，请参见Lahiru对这个问题的回答。这包含了更多的最新信息。

对于MySQL < 5.7:

默认root密码为空(即空字符串)，而不是root。所以你可以登录为:

mysql -u root

安装完成后，您显然应该更改root密码:

mysqladmin -u root password [newpassword]

在大多数情况下，您还应该在广泛使用数据库之前设置个人用户帐户。

2014-02-21 20:54:51

我尝试了Lahiru的正确答案，但它不能与macOS v10.14 (Mojave)上的MySQL服务器版本8.0.16 (Community)一起工作。

我遵循Sameer Choudhary的指示，并进行了一些调整，我能够更改根密码，并从本地主机启用根访问。

所有这些都不是必需的。如果您正在使用Homebrew在Mac OS上安装:

brew install mysql

2019-05-15 21:44:14

当您的密码丢失时就会发生这种情况。

忘记密码时的修改步骤:

Stop MySQL Server (on Linux): sudo systemctl stop mysql Start the database without loading the grant tables or enabling networking: sudo mysqld_safe --skip-grant-tables --skip-networking & The ampersand at the end of this command will make this process run in the background, so you can continue to use your terminal and run mysql -u root (as root). It will not ask for a password. If you get error like as below: 2018-02-12T08:57:39.826071Z mysqld_safe Directory '/var/run/mysqld' for UNIX socket file don't exists. mysql -u root ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) [1]+ Exit 1 Make MySQL service directory. sudo mkdir /var/run/mysqld Give MySQL user permission to write to the service directory. sudo chown mysql: /var/run/mysqld Run the same command in step 2 to run MySQL in background. Run mysql -u root. You will get the MySQL console without entering a password. Run these commands FLUSH PRIVILEGES; For MySQL 5.7.6 and newer ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password'; For MySQL 5.7.5 and older SET PASSWORD FOR 'root'@'localhost' = PASSWORD('new_password'); If the ALTER USER command doesn't work use: UPDATE mysql.user SET authentication_string = PASSWORD('new_password') WHERE User = 'root' AND Host = 'localhost'; Now exit To stop the instance started manually: sudo kill `cat /var/run/mysqld/mysqld.pid` Restart MySQL sudo systemctl start mysql

2018-02-12 14:25:38

我可以通过执行这条语句来解决这个问题