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Re: some problems with qdns 3.5 (crashes, load balancing)From: cali Date: Thursday, September 6, 2001
Time: 2:42:28 pmit is version 3.5.1 RELEASE out now?
> From: Men & Mice Support <cbuxton@menandmice.com>
> Reply-To: "QuickDNS Talk" <quickdns-talk@lists.menandmice.com>
> Date: Thu, 6 Sep 2001 14:24:31 -0700
> To: "QuickDNS Talk" <quickdns-talk@lists.menandmice.com>
> Subject: Re: some problems with qdns 3.5 (crashes, load balancing)
>
> There's a memory leak in QuickDNS Remote 3.5. It's been fixed in
> QuickDNS 3.5.1 (along with several other bugfixes).
>
> If a query is able to crash the primary server, and if that query is
> then sent to your secondary server (e.g. because the workstation that
> sent it has both listed in its TCP/IP settings), the secondary is
> likely to crash as well.
>
> Try upgrading to 3.5.1, and let us know if you continue to have these
> problems.
>
> Regarding the load balancing question, how are you testing? Are you
> using the load balance testing utility? It is the most accurate way
> to test a load balance setup, since it avoids the problem of cached
> answers.
> ____________________________________________________________________
> Chris Buxton Men & Mice
> cbuxton@menandmice.com We Make DNS Easy!
>
> At 8:22 PM +0200 9/6/01, Matthias Gruber wrote:
>> hello,
>>
>> recently i did the upgrade from qdns 3.0 to 3.5. qdns server (3.0.1r2) and
>> the remote agent and the load balancer are running on 2 motorola starmax
>> adt4160 with 128mb ram and macos 9.1 with latest updates.
>>
>> the primary qdns machine is crashing very often with error 1 or 2. qdns is
>> the only application on these computers (only autoboot and a retrospect are
>> running too).
>>
>> the secondary crashes more seldom but sometime shortly after the primary.
>>
>> crashes do not occur while backing up, so i think retrospect does not
>> interfere here. i think the macos is also clear.
>>
>> i did some tests and found that increasing memory for the remote agent and
>> the load balancer increases the time until the next crash occurs. with the
>> standard memory settings crashess occur a few times a day, now i have
>> 8192kbyte set and the primary is up for nearly two days now...
>>
>> both machines were quite stable with qdns 3.0.
>>
>> i would be glad to provide more information.
>>
>>
>>
>> another question: i am doing load balancing for our webservers. one server
>> is set to 9 the other to 1 so i expected to see every 10th packet going to
>> the secondary webserver. the load balancer tools shows me only the primary
>> server. when i stop the primary server then i get all traffic to the
>> secondary, when i start the primary again, all traffic goes to it again.
>>
>> i checked if all qdns programs are running on both servers, and they do.
>>
>> bye,
>>
>> Matthias Gruber
>>
>> -----------------------------------------------------
>> (Networking, Technical Support)
>>
>> WOLNET Internet Service Provider
>> Autorisierter Apple Haendler
>>
>> Hinterstrasse 21 Tel. 0271 2361830
>> D-57072 Siegen Fax. 0271 3331184
>>
>> mailto: matthias.gruber@wolnet.de
>> internet: http://www.wolnet.de/
>
>
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