我看到所有这些答案，但没有一个提供重置密码的选项，没有接受的答案。实际的问题是他忘记了密码，所以他需要重置，而不是像大多数答案所暗示的那样，看看它是否正在运行(安装与否)。

重置密码

遵循以下步骤(如果你真的忘记了密码，这可能会有帮助，你可以随时尝试，即使你现在没有这种情况):

Stop mysql sudo /etc/init.d/mysql stop Or for other distribution versions: sudo /etc/init.d/mysqld stop Start MySQL in safe mode sudo mysqld_safe --skip-grant-tables & Log into MySQL using root mysql -u root Select the MySQL database to use use mysql; Reset the password -- MySQL version < 5.7 update user set password=PASSWORD("mynewpassword") where User='root'; -- MySQL 5.7, mysql.user table "password" field -> "authentication_string" update user set authentication_string=password('mynewpassword') where user='root'; Flush the privileges flush privileges; Restart the server quit Stop and start the server again Ubuntu and Debian: sudo /etc/init.d/mysql stop ... sudo /etc/init.d/mysql start

在CentOS、Fedora和RHEL上:

    sudo /etc/init.d/mysqld stop
    ...
    sudo /etc/init.d/mysqld start

使用新密码登录 Mysql -u root -p 输入新密码，再次享受您的服务器，就像什么都没有发生一样

这是从重置MySQL根密码。

我以前在Kubuntu 20.04中遇到过这个问题。我的解决办法就是跑:

sudo dpkg --configure -a

原因是dpkg崩溃了。

我以前也遇到过这个问题，我通过跑步解决了它:

sudo /etc/init.d/mysql start

我想服务停止了。

对我来说，更新解决了这个问题:

在Ubuntu上:

sudo apt-get update
sudo apt-get upgrade

CentOS:

sudo yum update

如果您的Linux机器上安装了XAMPP，请尝试将my.cnf文件从/opt/lampp/etc/my.cnf复制到/etc/my.cnf

然后，再次运行mysql -u root…现在您应该有了正确的套接字，并且能够运行MySQL客户端。

对我来说，在CentOS上，我不得不像这样重新启动mariadb服务:

systemctl start mariadb.service

This error can also occur if you try to change the directory where the database is stored, but imput the wrong directory in the configuration file (like a typo in the second drive as D instead of the accurate D_). Instead of telling you the typo directory does not exist, it will tell you that you lack permission to access it (leading you to try to change the permissions for the typo directory, which it will let you do). So if you get this error while changing directories, double check the configuration file and make sure you don't have a typo.