[ILUG] Squid problems

[Fergus Donohue]

Hi Niall,

This used to work the other way. Squid 2.3 (and later) talk directly to
nameservers from their select loop. 2.2 (and earlier) had external DNS
programs that called the systems gethostbyname() and hence followed
nsswitch.conf. You can rebuild squid with --disable-internal-dns to
return to the old behaviour. I remember reading something about a patch
or workaround to use the internal squid dns code with hosts files etc.
but I can't remember where I saw it - you could try the archive for the
squid-users mailing list.

Regards,

Fergus.

Niall O Broin wrote:
> 
> I've just upgraded the distribution on my main machine to SuSE 7.0 (I know,
> I know - I've more to be doing than living on the bleeding edge) and squid
> is dying. Whenever I tried to access a URL by name in Netscape, I got a
> "Document contains no data." alert and there was an entry like
> 
> 2001/05/09 09:52:40| assertion failed: dns_internal.c:212: "nns > 0"
> 
> in cache.log, immediately followed by
> 
> 2001/05/09 09:52:43| Starting Squid Cache version 2.3.STABLE3 . . .
> 
> which I presume means that Squid has restarted.
> 
> My resolv.conf had no nameserver entries (they get inserted on the fly by
> wvdial) so I put in a couple. This stops squid from crashing, but instead I
> see a lot of entries in cache.log about squid being unable to reach the
> nameservers like
> 
> 2001/05/09 10:20:11| comm_udp_sendto: FD 2, 194.145.128.2, port 53: (101)
> Network is unreachable
> 2001/05/09 10:20:11| idnsSendQuery: FD 2: sendto: (101) Network is unreachable
> 
> These are unsurprising as I was offline at the the time :-)
> 
> The strange thing is that squid should not have tried to do a DNS lookup for
> the requested address - it's on my local LAN, nsswitch.conf is configured
> correctly (I can ping the relevant address by name) so why is squid trying
> to do a DNS lookup and how do I stop it ?
> 
> Regards,
> 
> Niall
> 
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