BIND freezing up randomly under "real" load
Mark Andrews
marka at isc.org
Fri Aug 5 00:56:33 UTC 2011
In message <OF37C4EC6B.4C6AF96C-ON882578E2.0061B051-882578E2.0066FE9C at nshe.neva
da.edu>, Ian_Veach at nshe.nevada.edu writes:
>
> Am (was) prepping to deploy BIND 9.7.3-P3 (which is the version that came
> with RHEL6.1) on RHEL6.1, sitting on top of OSPF anycast. Currently
> running BIND 9.5.0-P2 (with Novell patches) on SLES 11 (with OSPF anycast)
> just fine in production, but running into strange problem on new system,
> not encountered during testing.
>
> SLES system runs ok, RHEL install tested ok under "loading." When moving
> into production, named runs fine with no customers (ospf off). I can (and
> have) queried it (dig @localhost) all day. When I turn on ospf and let
> the real world query, it works fine for a couple minutes and then hangs
> completely: rndc won't connect, no logs are updated, named will not
> respond at all, but it is still running (and a telnet to 53 or 953
> connects at least, but I'm not familiar with protocol level commands).
> named stop fails (hangs), and I have to pkill it to be able to restart it.
>
> A trace (level 99) yielded nothing in the logs before it crapped out. I
> was running rndc and I see those and then nothing. The few previous
> errors noted were DNS format errors from external sources.
>
> Network guys and I note OSPF looks fine (digging to localhost, anyway, and
> that eventually fails). lsof doesn't show anything particularly weird.
> system load, mem, etc. seems fine (comparable to SLES systems). It just
> seems to give up the ghost...
>
> Any ideas? Any additional info that would be helpful?
I would try BIND 9.7.4. If that doesn't fix the problem open a bug report.
> cheers and thanks,
> ________________________________________________________________________
> Ian Veach NSHE System Computing Services
> ian_veach at nshe.nevada.edu Senior Systems Engineer
> ________________________________________________________________________
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka at isc.org
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