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
请阅读官方文档:MySQL:如何重置Root密码
如果您可以访问终端:
MySQL 5.7.6及以上版本:
mysql
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';
MySQL 5.7.5及以前版本:
mysql
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('MyNewPass');
其他回答
我想在建议重新安装MySql的答案中再补充一个提示:在我的情况下，重新安装还不够，我还必须删除/etc/mysql文件夹(MySql 8, Ubuntu 20)。
对于那些目前的答案不工作的人，可以试试这个(在macOS上测试):
mysql -h localhost -u root -p --protocol=TCP
在此之后，将要求您输入密码，您应该使用您的操作系统用户密码。然后当你进入MySQL时，你可以运行:
select Host, User from mysql.user;
你应该看到:
MySQL [(none)]> select Host, User from mysql.user;
+-----------+------------------+
| Host | User |
+-----------+------------------+
| localhost | mysql.infoschema |
| localhost | mysql.session |
| localhost | mysql.sys |
| localhost | root |
+-----------+------------------+
从这里你可以改变配置，编辑密码或修改拨款。
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
因为你的错误信息显示“PASSWORD: YES”，这意味着你正在使用错误的密码。这种事也发生在我身上。幸运的是，我记得我的正确密码，并能够使数据库连接工作。
对于WSL2，我输入以下命令
sudo mysql -u root -p
它提示我输入密码，我假设这一步是设置密码。我输入了一个随机字符串，然后就可以访问MySQL提示符了。 这可能不是正确的答案，但至少可以帮助你开始
