Frank Ling wrote:
> Hi,
>
> My both CentOS 5 servers have logging problems. Logs such as messages,
> boot.log, kernel, spooler, and tallylog in /var/log directory are all 0
> size.
>
> The kernel is: Linux 2.6.18-92.1.22.el5 #1 SMP.
>
> Since the /var/log/messages contained no information it would be
> impossible to troubleshoot the problem.
>
> I am very sure both systems have not been hacked by others.
>
> Sincerely,
>
> Frank Ling
> --------------------------------------------------------------------------
> -rw------- 1 root root 0 Feb 8 04:02 messages
> -rw------- 1 root root 0 Feb 3 11:04 messages.1
> -rw------- 1 root root 0 Jan 25 04:02 messages.3
> -rw------- 1 root root 0 Jan 11 04:03 messages.4
> -rw------- 1 root root 10 Dec 27 13:00 messages.offset
>
> -rwx------ 1 root root 0 Feb 11 19:12 kernel
> -rwx------ 1 root root 0 Feb 11 16:53 kernel.1
> -rwx------ 1 root root 0 Jan 25 04:02 kernel.3
> -rwx------ 1 root root 0 Jan 11 04:03 kernel.4
>
> -rw------- 1 root root 0 Feb 8 04:02 spooler
> -rw------- 1 root root 0 Feb 3 07:51 spooler.1
> -rw------- 1 root root 0 Jan 25 04:02 spooler.3
> -rw------- 1 root root 0 Jan 11 04:03 spooler.4
>
> -rw------- 1 root root 0 Jun 24 2008 tallylog
> --------------------------------------------------------------------------
>
I've had something similar happen a couple of times after an update. In
my case the /etc/services file got it's security context clobbered when
some package tried to update it's contents. When logrotate ran, the
syslog daemon couldn't open /etc/services because of the error and I
ended up with a bunch of empty log files.
The quickest way to check for this is the command:
restorecon -v /etc/services
If nothing prints out in response, that's not the problem. If it DOES,
that might explain it. I have been checking the contexts occasionally
to try and trap exactly when it happens. I use:
restorecon -R -n -v /etc
which walks through the entire /etc tree looking for contexts to change
but just reports any exceptions.
Just a thought!
--
Jay Leafey - Memphis, TN
jay.leafey at mindless.com
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