我在Ubuntu 12.04 LTS (Precise穿山甲)上安装了LAMP，然后在phpMyAdmin上设置根密码。我忘记密码了，现在无法登录。当我试图通过终端更改密码时，我得到:
错误2002 (HY000):无法通过套接字连接到本地MySQL服务器 ' / var /运行/ mysqld / mysqld。袜子”(2)
我该如何解决这个问题?我无法打开LAMP，卸载它或重新安装它。
当前回答
尝试重新启动服务器
sudo /usr/local/mysql/support-files/mysql.server start
如果出现任何错误，请按照以下步骤进行操作
mysqld
您将看到下面的日志。注意MySQL目录中突出显示的部分
mysqld: Can't change dir to '/usr/local/mysql-5.7.14-osx10.11-x86_64/data/' (Errcode: 13 - Permission denied) 2016-10-04T14:09:19.392581Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2016-10-04T14:09:19.392847Z 0 [Warning] Insecure configuration for --secure-file-priv: Current value does not restrict location of generated files. Consider setting it to a valid, non-empty path. 2016-10-04T14:09:19.392921Z 0 [Note] mysqld (mysqld 5.7.14) starting as process 1402 ... 2016-10-04T14:09:19.397569Z 0 [Warning] Can't create test file /usr/local/mysql-5.7.14-osx10.11-x86_64/data/Sudharshan.lower-test 2016-10-04T14:09:19.397597Z 0 [Warning] Can't create test file /usr/local/mysql-5.7.14-osx10.11-x86_64/data/Sudharshan.lower-test 2016-10-04T14:09:19.397712Z 0 [ERROR] failed to set datadir to /usr/local/mysql-5.7.14-osx10.11-x86_64/data/ 2016-10-04T14:09:19.397776Z 0 [ERROR] Aborting 2016-10-04T14:09:19.397795Z 0 [Note] Binlog end 2016-10-04T14:09:19.397925Z 0 [Note] mysqld: Shutdown complete
sudo chown -R _mysql:_mysql /usr/local/mysql-5.7.14-osx10.11-x86_64
注意前面日志中的MySQL文件夹路径/usr/local，在我的例子中，它是MySQL -5.7.14-osx10.11-x86_64，您必须根据您在计算机上获得的日志更新它，以提供对MySQL目录的读访问
sudo /usr/local/mysql/support-files / mysql。服务器启动
启动MySQL 成功!
其他回答
你检查过LAMPP是否在运行吗?
sudo bash <path>/lampp start
对我来说，路径就是
sudo bash /opt/lampp/lampp start
在我的情况下，它是磁盘已满，mysqld不能再启动。
尝试重新启动mysql服务。
> service mysql restart
or
> service mysql stop
> service mysql start
如果它不识别停止命令，那么它肯定是磁盘空间。您应该在mysql分区中分配一些空间或使磁盘更大。
检查磁盘空间
> df -h
我通过杀死mysql进程来解决这个问题:
ps -ef | grep mysql
kill [the id]
然后我再次启动服务器:
sudo /etc/init.d/mysql restart
但是start也同样有效:
sudo /etc/init.d/mysql start
然后我以管理员身份登录，就搞定了。
我用重启mysql解决了这个问题
/etc/init.d/mysql stop
and
/etc/init.d/mysql start
就是这样。
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.
