[Techtalk] More Squid

[Raven, corporate courtesan]

Heya --

Quoth James (Sun, Mar 17, 2002 at 09:56:14AM -0500):
> Another day with Squid, same issues.
> I turned debugging to the highest, but still was not able to find
> anything that hinted to my problem.

	Okay, I'm by no means a Squid expert, but I'll take a shot at
this.
 
> Recap: Squid will work, but then will randomly sort of "timeout" after a
> random number of minutes.  Several minutes after that, it will start to
> work again, automagically.  IE will get the generic DNS error and Opera
> on Linux will report something like "Proxy access denied."

	Have you tried turning on tcpdump on the relevant interfaces
when you're seeing this problem?  (Or ideally, before seeing this
problem, through when you see this problem.)  On the off chance that
it's not a problem internal to the Squid server, you'll see where the
packets stop, at least.  This is good for diagnosing firewalling and DNS
issues.  If you don't know how to use tcpdump, say so, and I'll write up
a quick tutorial.  (Been meaning to do that anyway for the security
course.)

	Can you correlate this with a time of day, an "every n seconds",
a particular web page that it always fails with?  Any sort of pattern
you can see as to when it fails?

Cheers,
Raven
 
"Sed, sed, awk.  Like duck, duck, goose.  Sync, sync, halt.  It's the
 order of nature."
  -- me, after too long a day at work