Re: [squid-users] intermittent DNS problems

> Hi,
>
> I'm using SQUID 2.5 STABLE11 on FreeBSD 5.4. Squid is using internal DNS
> (configured without --disable-internal-dns)
>
> Squid is working fine with 8Mbps traffic, but there're some intermittent DNS
> problems, which at those times squid do not serve requests, at the same time
> when I tried to resolve a domain(www.google.com) with nslookup on freebsd,
> dns timed-out! (My Windows Server 2003 DNS servers are working fine as I
> checked them from other servers and nslookup resolves.)
>
> After a few minutes (2-4), nslookup resolves and squid start serving
> requests again.
>
> What is causing this problem?
> Is it FreeBSD or SQUID?
>
> I didn't increase number of dns processes, because I'm using internal dns.
>

  - Checkout access.log for those requests which are failing, if the
DNS problem is apparent.

  - Also ,review cache.log completely, watchout for any errors related to
DNS or other stuff.

  - If nslookup fails to, you are likely to have system problems.
    The dnsservers are determined in /etc/resolv.conf.
    Use more then one dns server.

  M.
Received on Mon Dec 26 2005 - 05:45:21 MST