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
如果你还没有设置密码，那么运行mysql -uroot。这对我很管用。
其他回答
在my.cnf文件的底部添加以下两行代码:
[mysqld]
skip-grant-tables
这应该有用。
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
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)。
我所面临的错误是:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
这是一个端口运行的问题。
默认情况下，MySQL运行在3306端口上。
你可以通过运行来检查
在32位系统中: sudo / opt / lampp / manager-linux.run 在64位系统中: sudo / opt / lampp / manager-linux-x64.run
然后点击Configure按钮。
在我的示例中，端口运行在3307上，我使用了该命令
mysql -u root -p -P 3307 -h 127.0.0.1
默认情况下，密码为空，因此您必须按照以下步骤修改密码。
连接MySQL
root# mysql
Use mysql
mysql> update user set password=PASSWORD('root') where User='root';
最后，重新加载特权:
mysql> flush privileges;
mysql> quit
