Mysql问题:没有mysql.sock

Question

昨天我正在使用安装在我电脑上的MySQL.
我下载了xampp,所以我在my.cnf文件中更改了套接字的路径:

 /opt/lampp/var/mysql/mysql.sock  

那个文件就在那里.今天我想继续努力,我发现文件不再存在,所以我在启动mysql服务器时遇到以下错误:

ERROR 2002 (HY000): 
Can't connect to local MySQL server through socket 
'/opt/lampp/var/mysql/mysql.sock' (2)

以下是我做的一些测试:

mujeresponja@ubuntu:~$ ps -fea | grep mysqld
1000     15707 15615  0 16:28 pts/1    00:00:00 grep --color=auto mysqld
mujeresponja@ubuntu:~$ ps -fea | grep mysql 
1000     15709 15615  0 16:29 pts/1    00:00:00 grep --color=auto mysql

作为一种可能的解决方案,我卸载了xampp并重新安装它,以及一个新的MySQL服务器,以防万一.无论如何,那个文件不再存在了.

编辑 mysql.sock应该在哪里,而是有两个文件mysql_upgrade_info(其中只包含5.5.8)和另一个名为ubuntu.err的二进制文件:

mujeresponja@ubuntu:/opt/lampp/var/mysql$ sudo cat ubuntu.err 
110403 17:28:52 mysqld_safe Starting mysqld daemon with databases from /opt/lampp/var/mysql
110403 17:28:52 [Note] Plugin 'FEDERATED' is disabled.
/opt/lampp/sbin/mysqld: Can't find file: './mysql/plugin.frm' (errno: 13)
110403 17:28:52 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
InnoDB: The InnoDB memory heap is disabled
InnoDB: Mutexes and rw_locks use InnoDB's own implementation
InnoDB: Compressed tables use zlib 1.2.3
110403 17:28:52  InnoDB: Initializing buffer pool, size = 16.0M
110403 17:28:52  InnoDB: Completed initialization of buffer pool
110403 17:28:52  InnoDB: Operating system error number 13 in a file operation.
InnoDB: The error means mysqld does not have the access rights to
InnoDB: the directory.
InnoDB: File name /opt/lampp/var/mysql/ibdata1
InnoDB: File operation call: 'create'.
InnoDB: Cannot continue operation.
110403 17:28:52 mysqld_safe mysqld from pid file /opt/lampp/var/mysql/ubuntu.pid ended
110403 17:29:22 mysqld_safe Starting mysqld daemon with databases from /opt/lampp/var/mysql
110403 17:29:22 [Note] Plugin 'FEDERATED' is disabled.
/opt/lampp/sbin/mysqld: Can't find file: './mysql/plugin.frm' (errno: 13)
110403 17:29:22 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
InnoDB: The InnoDB memory heap is disabled
InnoDB: Mutexes and rw_locks use InnoDB's own implementation
InnoDB: Compressed tables use zlib 1.2.3
110403 17:29:22  InnoDB: Initializing buffer pool, size = 16.0M
110403 17:29:22  InnoDB: Completed initialization of buffer pool
110403 17:29:22  InnoDB: Operating system error number 13 in a file operation.
InnoDB: The error means mysqld does not have the access rights to
InnoDB: the directory.
InnoDB: File name /opt/lampp/var/mysql/ibdata1
InnoDB: File operation call: 'create'.
InnoDB: Cannot continue operation.
110403 17:29:22 mysqld_safe mysqld from pid file /opt/lampp/var/mysql/ubuntu.pid ended

(对不起,我不知道如何以适当的方式显示终端消息)有人可以帮我吗？提前致谢!

Answer 1

您可以找到实际的套接字文件并创建一个通向它的符号链接,如下所示:

# check path to socket from mysql settings  
mysqladmin | grep d.sock

# create a symbolic link
ln -s path_to_mysql_socket /opt/lampp/var/mysql/mysql.sock