错误2002（HY000）：无法通过套接字’/var/run/mysqld/mysqld.sock’（2）连接到本地MySQL服务器

我尝试了在互联网上找到的所有内容，但是无法解决在Ubuntu 11.04上出现的问题。

我尝试了这些事情：

• 使用手动启动mysqld sudo /usr/sbin/mysqld start
• 使用启动mysqld service mysqld start
• 检查它是否正在使用ps ax | grep mysqld并获得结果3419 pts/0 S+ 0:00 grep --color=auto mysqld
• 在手动创建文件/var/run/mysqld/mysqld.sock
• 授予mysql用户权限
• 试图删除并重新安装，但仍然无法正常工作
• 试图tasksel配置LAMP，其他所有工作都正常，但是mysql产生相同的错误。

与mysqld -P 3305它一起运行时会产生错误

110630  0:24:24 [Warning] Can't create test file /var/lib/mysql/nazar-studio.lower-test
110630  0:24:24 [Warning] Can't create test file /var/lib/mysql/nazar-studio.lower-test
mysqld: Can't change dir to '/var/lib/mysql/' (Errcode: 13)
110630  0:24:24 [ERROR] Aborting

110630  0:24:24 [Note] mysqld: Shutdown complete

这是mysql错误日志

10630  0:07:22 [Note] Plugin 'FEDERATED' is disabled.
110630  0:07:22  InnoDB: Initializing buffer pool, size = 8.0M
110630  0:07:22  InnoDB: Completed initialization of buffer pool
InnoDB: The first specified data file ./ibdata1 did not exist:
InnoDB: a new database to be created!
110630  0:07:22  InnoDB: Setting file ./ibdata1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
110630  0:07:22  InnoDB: Log file ./ib_logfile0 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile0 size to 5 MB
InnoDB: Database physically writes the file full: wait...
110630  0:07:22  InnoDB: Log file ./ib_logfile1 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile1 size to 5 MB
InnoDB: Database physically writes the file full: wait...
InnoDB: Doublewrite buffer not found: creating new
InnoDB: Doublewrite buffer created
InnoDB: Creating foreign key constraint system tables
InnoDB: Foreign key constraint system tables created
110630  0:07:23  InnoDB: Started; log sequence number 0 0
110630  0:07:23  InnoDB: Starting shutdown...
110630  0:07:28  InnoDB: Shutdown completed; log sequence number 0 44233
110630  0:07:28 [Note] Plugin 'FEDERATED' is disabled.
110630  0:07:28  InnoDB: Initializing buffer pool, size = 8.0M
110630  0:07:28  InnoDB: Completed initialization of buffer pool
110630  0:07:28  InnoDB: Started; log sequence number 0 44233
ERROR: 1064  You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ALTER TABLE user ADD column Show_view_priv enum('N','Y') CHARACTER SET utf8 NOT ' at line 1
110630  0:07:28 [ERROR] Aborting

110630  0:07:28  InnoDB: Starting shutdown...
110630  0:07:34  InnoDB: Shutdown completed; log sequence number 0 44233
110630  0:07:34 [Note] /usr/sbin/mysqld: Shutdown complete

110630  0:07:34 [Note] Plugin 'FEDERATED' is disabled.
110630  0:07:34  InnoDB: Initializing buffer pool, size = 8.0M
110630  0:07:34  InnoDB: Completed initialization of buffer pool
110630  0:07:34  InnoDB: Started; log sequence number 0 44233
110630  0:07:34  InnoDB: Starting shutdown...
110630  0:07:39  InnoDB: Shutdown completed; log sequence number 0 44233
110630  0:07:39 [Note] Plugin 'FEDERATED' is disabled.
110630  0:07:39  InnoDB: Initializing buffer pool, size = 8.0M
110630  0:07:39  InnoDB: Completed initialization of buffer pool
110630  0:07:39  InnoDB: Started; log sequence number 0 44233
ERROR: 1050  Table 'plugin' already exists
110630  0:07:39 [ERROR] Aborting

110630  0:07:39  InnoDB: Starting shutdown...
110630  0:07:44  InnoDB: Shutdown completed; log sequence number 0 44233
110630  0:07:44 [Note] /usr/sbin/mysqld: Shutdown complete

110630  0:18:30 [Note] Plugin 'FEDERATED' is disabled.
110630  0:18:30  InnoDB: Initializing buffer pool, size = 8.0M
110630  0:18:30  InnoDB: Completed initialization of buffer pool
110630  0:18:30  InnoDB: Started; log sequence number 0 44233
mysqld: Too many arguments (first extra is 'start').
Use --verbose --help to get a list of available options
110630  0:18:30 [ERROR] Aborting

110630  0:18:30  InnoDB: Starting shutdown...
110630  0:18:35  InnoDB: Shutdown completed; log sequence number 0 44233
110630  0:18:35 [Note] mysqld: Shutdown complete

如何解决此错误？