On Jan 14, 2012, at 10:17 AM, Paul Beard wrote:
> I would be interested in knowing how those permissions got changed.
Someone or something running as root changed them.
> I rebooted the system early on in the process as I kept seeing messages like
> this:
> 120114 9:39:04 [ERROR] Can't start server : Bind on unix socket: Permission
> denied
> 120114 9:39:04 [ERROR] Do you already have another mysqld server running on
> socket: /tmp/mysql.sock ?
>
> Those are rubbish as error messages as they don't say the file can't be
> created or give any indication of the actual problem.
The meaning seems obvious enough; mysqld was unable to bind to the socket,
which is what perror() meant with "Permission denied":
13 EACCES Permission denied. An attempt was made to access a file in a
way forbidden by its file access permissions.
Either /tmp was unwritable for mysqld due to not having 1777 perms, or
/tmp/mysql.sock probably already existed but was owned by root and not the user
mysqld runs as.
Anyway, doesn't the mysql port want to keep the socket under
/var/run/mysql/mysqld.sock or some such, to avoid issues with /tmp?
Regards,
--
-Chuck
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