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

我以root用户($SUDO)安装MySQL,得到了同样的问题

以下是我的解决方法:

sudo cat /etc/mysql/debian.cnf This will show details as: # Automatically generated for Debian scripts. DO NOT TOUCH! [client] host = localhost user = debian-sys-maint password = GUx0RblkD3sPhHL5 socket = /var/run/mysqld/mysqld.sock [mysql_upgrade] host = localhost user = debian-sys-maint password = GUx0RblkD3sPhHL5 socket = /var/run/mysqld/mysqld.sock Above we can see the password. But we are just going to use(GUx0RblkD3sPhHL5) that in the prompt. `mysql -u debian-sys-maint -p Enter password: ` Now provide the password (GUx0RblkD3sPhHL5). Now exit from MySQL and log in again as: `mysql -u root -p Enter password: `

现在提供新密码。这是所有。我们有新密码供以后使用。

这对我很管用。

其他回答

从这个链接复制,我有同样的问题,这解决了问题。在我们为数据库添加密码之后,我们需要添加-p(基于密码的登录),然后输入密码。否则,它将返回以下错误:

mysql -u root -p

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

我使用的是mysql-5.7.12-osx10.11-x86_64。dmg在Mac OS X上。

安装过程会自动为root用户设置一个临时密码。你应该保存密码。密码不可恢复。

按照说明操作:

Go to cd /usr/local/mysql/bin/ Enter the temporary password (which would look something like, "tsO07JF1=>3") You should get the mysql> prompt. Run, SET PASSWORD FOR 'root'@'localhost' = PASSWORD('{YOUR_PASSWORD}'); If you wish to set your password: "root" then the command would be, SET PASSWORD FOR 'root'@'localhost' = PASSWORD('root'); Run ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER; Run exit Run ./mysql -u root -p Type your password. In my case I would type, "root" (without quote) That's all.

为了方便起见,您应该在PATH环境变量中添加“/usr/local/mysql/bin”。

现在你可以在任何地方输入。/mysql -u root -p,然后输入密码,你会得到mysql>提示。

如果你还没有设置密码,那么运行mysql -uroot。这对我很管用。

在服务器初始启动时,假设服务器的数据目录为空,会发生以下情况:

完成服务器的初始化。 在data目录下生成SSL证书和密钥文件。 安装并启用validate_password插件。 创建超级用户帐户“root”@“localhost”。超级用户的密码被设置并存储在错误日志文件中。 要显示它,使用以下命令:

Shell > sudo grep '临时密码' /var/log/mysqld.log

请使用临时密码登录,并自定义超级用户密码,尽快修改root用户密码:

Shell > mysql的root -p

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass5!