将/opt/lampp/etc/my.cnf文件复制到/etc/mysql/my.cnf

在终端类型中:

mysql -u root

你会得到mysql>提示:

mysql> Update mysql.user set Password=PASSWORD('your_password') where user='root';

mysql> FLUSH PRIVILEGES;

我在Ubuntu上有这个，正如我所发现的，有不止一个mysqld实例。

看起来上一个还没有完全停止，而新的已经开始了。运行/ etc / init。d/mysql stop'没有帮助，它总是返回'OK'，并且在那之后会自动启动一个新实例:

        $ sudo /etc/init.d/mysql stop
         * Stopping MySQL database server mysqld        [ OK ] 
        $ pgrep mysql
        28315
        $ sudo /etc/init.d/mysql stop
         * Stopping MySQL database server mysqld        [ OK ] 
        $ pgrep mysql
        28570
        $ sudo /etc/init.d/mysql stop
         * Stopping MySQL database server mysqld        [ OK ] 
        $ pgrep mysql
        28763
        ..... etc ...

幸运的是，下面的命令已经解决了这个问题:

    $ sudo service mysql stop
    mysql stop/waiting

    $ ps -ef | grep mysql
    29841 26858  0 10:59 pts/8    00:00:00 grep --color=auto mysql <--- IT's gone ! 

之后，我能够再次启动mysql，并看到mysql。Sock已经创建成功。

我不得不说:

sudo /etc/init.d/mysqld start

根据我的经验，你需要先检查服务器是否正在运行，然后再尝试配置MySQL。最后一个解决方案是重新安装MySQL。

将/opt/lampp/etc/my.cnf文件复制到/etc/mysql/my.cnf

在终端类型中:

mysql -u root

你会得到mysql>提示:

mysql> Update mysql.user set Password=PASSWORD('your_password') where user='root';

mysql> FLUSH PRIVILEGES;

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.