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Can't connect to local MySQL server through socket

11:09 pm on Mar 9, 2011 (gmt 0)

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joined:Mar 4, 2011
posts: 10
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Hi all !

I'm running a vbulletin forum for 10 years now.
Suddently, i started to get problems with MySQL, getting tons of emails giving this error:

mysql_pconnect() [<a href='function.mysql-pconnect'>function.mysql-pconnect</a>]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

Anyway to fix this permanently ?
don't know what to do....

8:06 pm on Mar 10, 2011 (gmt 0)

Senior Member from KZ 

WebmasterWorld Senior Member lammert is a WebmasterWorld Top Contributor of All Time 10+ Year Member Top Contributors Of The Month

joined:Jan 10, 2005
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Did you check if the file /var/lib/mysql/mysql.sock exists? List the directory with the following command:

ls -ladF /var/lib/mysql/mysql*

The result should be this:
drwx------ 2 mysql mysql 4096 Apr 4 2010 mysql/
srwxrwxrwx 1 mysql mysql 0 Jan 7 00:16 mysql.sock=

Sometimes the mysql.sock doesn't exist because it has been erased accidentaly, and sometimes it is not a socket but a normal file. In that case the = is missing at the end of the file name with this specific directory listing command. If it is a file, deleting that file and restarting the MySQL server should do the trick.

You should also check if there has been a recent update of MySQL on your server which changed your my.cnf file. That file should at least contain the following lines: