LinuxSA Mailing list archives

  From: michael <michael@home.lyppard.com.au>
  To  : Alan Kennington <akenning@topology.org>
  Date: Sun, 22 Jul 2001 09:28:53 +0930 (CST)

Re: BIND 9.1.0 fails badly

Hi Alan,

Hmm. You certainly experience more unreliability than most people I come
across. Have you thought about one of those watchdog type systems that
maintains your various services in an 'up' state? I'm sorry I don't know
any examples, but I'm sure there would be some on freshmeat, or you could
roll your own - a script that runs ps against a vital set of components
and restarts them if they are not present.

Regards,

Michael

PS. How is the Skiing in NZ this winter?

On Sun, 22 Jul 2001, Alan Kennington wrote:

> In recent weeks, I reported that BIND 9.1.0 failed in
> the sense of apparently getting corrupted translation
> tables or something:
> 
> Tue May  8 21:23:58 2001
> Thu Jun 21 14:55:02 2001
> 
> While I was in NZ for the last 2 weeks, I tried to read the
> incoming mail from linuxSA and noticed that there were no
> items for over 24 hours. Since this was clearly impossible (!),
> I knew that there must be a software problem somewhere.
> It quickly became clear that my name server daemon (BIND 9.1.0)
> had simply died, with no messages at all in the log files.
> 
> The motto of this story is that even if you spend a couple of weeks
> fixing causes of intermittent failure in your system, you still
> can't assume that you can leave your system unattended for a whole
> 2 weeks while you take a holiday. 
> Consequently, about 16 domains went off the net for a couple of days,
> which must mean that my own name daemon failed for more than
> 2 days, because the secondary name servers would have held out for
> a day or two. 
> 
> 
> I guess the solution to my problem is to do yet another BIND version
> update and hope that the problem has been fixed.
> After all, that's what happened with some serious ReiserFS bugs in
> kernels 2.4.0 to about 2.4.5, and with some serious iptables bugs
> in kernel 2.4.3.
> 
> My system with the unfortunate BIND 9.1.0 bug is as follows:
> 
> uname -a: Linux dog 2.4.6 #2 Thu Jul 5 03:30:18 CST 2001 i586 unknown
> named -v: BIND 9.1.0
>      cpu: AMD K6/3-500, stepping 12
>      ram: 128 MBytes
>     disk: 30 GBytes, ReiserFS except for /boot (ext2fs)
>   distro: SuSE 7.1
> 
> ----------------------------------------------------------------
> By the way, I just heard on 729 kHz AM radio that at 1:00 p.m. today,
> there will be a programme with items on "the ner from the north"
> (Linux Torvalds), some advanced successor to the Internet invented by CERN
> (called the "GRID" apparently) and other such things.
> 
> Well, now I have to download and install/configure the latest
> BIND version.
> See you later,
> Alan Kennington.
> 
> --------------------------------------------------------------------
>     name: Dr. Alan Kennington
>   e-mail: akenning@topology.org
>  website: http://www.topology.org/
>     city: Adelaide, South Australia
>   coords: 34.88051 S, 138.59334 E
> timezone: UTC+0930 http://www.topology.org/timezone.html
>  pgp-key: http://www.topology.org/key_ak2.asc
> 
> -- 
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