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Date:      Wed, 16 Aug 2000 14:08:55 -0700 (PDT)
From:      Todd Backman <todd@flyingcroc.net>
To:        freebsd-security@FreeBSD.ORG
Subject:   Re: syslogd poll state 
Message-ID:  <Pine.BSF.4.21.0008161356000.6276-100000@security1.noc.flyingcroc.net>
In-Reply-To: <Pine.BSF.4.21.0008151635580.4625-100000@security1.noc.flyingcroc.net>

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I tried on -questions and didn't get any bites. Any ideas here?:

(updated info: I increased my udp.recvspace via sysctl to overcome any
possible overloads due to +250 servers spewing syslog data to it. That was
not the problem and the poll state continues to occur. 

One thing I noticed is that when syslogd is in the "poll" state the
following is listed in the output of sockstat:

machinename# sockstat

root     syslogd     83    4 udp4   *.514                 *.*
root     syslogd     83    6 udp4   x.x.x.x.271		  x.x.x.x.53
				    ^^^^^^^		  ^^^^^^^
				    machine IP		  nameserver IP

I am wondering why syslogd would be attempting to do any type of lookups?

Thanks.

- Todd
	
> 
> Greetings.
> 
> Application:
> 
> I am running a central syslog repository that logs +250 freebsd
> servers. The syslog server is running 4.0-STABLE on good hardware (PII
> 400, 256mb ram, Cheetah HD, adaptec 2940, Intel NIC).
> 
> Issue:
> 
> Syslog seems to die (enter poll state) at undetermined times. At first I
> thought it was newsyslog related but I turned off newsyslog in cron and
> the problem continues. Hupping syslogd has no effect and I must kill it 
> and restart to clear the poll state. I have searched the archives (pain in
> the neck without having the ability to search by date :^P ) and have not 
> seen similar instances that have been answered. 
> 
> Question:
> 
> Could some entry from one of my remote machines be killing syslogd?
> (I have looked at the entries in /var/log/messages that correspond to the
> times that cron dies/stops logging and nothing is out of the ordinary)
> There are no other cronjobs that correspond to the times that syslog
> stops...
> 
> I would like to find out if anyone else has had this type of difficulty
> before I rebuild the system/replace files/at script to grep for the poll
> states, kill and restart syslogd...
> 
> 
> Thanks in advance.
> 
> - Todd




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