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on 12-03-2001 09:48, Men & Mice Support at cbuxton@menandmice.com wrote:
Re: Load Balancing Updating Problems
From: Nick
Date: Thursday, March 15, 2001
Time: 12:46:06 pm
>> When making updates to a load balancing record, I've noticed a couple
>> things:
>>
>> - The primary crashes. I'm not sure that it happens every time.
>> - The secondarys stop doing any load balancing.
>>
>> In any case, it looks like a complete server restart is a good thing after
>> updating the load balancing record.
>>
>> QDNS Pro 3.0.1.
>>
>> Will Mayall
>> Garage.com
>> A Venture Capital Investment Bank
>> http://www.garage.com/transactions/
>
> One user recently reported a similar problem and we've created a new
> build of the QuickDNS Pro server that should address this issue. The
> new build hasn't been fully tested yet, but we're confident that it
> will solve this problem.
>
> Contact me off-list if you want me to send it to you so that you can
> try it out and see whether it stops the crashing.
I have a similar problem (or at least closely related) with load balancing
not working.
Many many weeks ago, and merely as a test, I had set up a load-balancing
record for one of the domains we host (I had never used this before).
Well, it worked (more or less).
Then we had some important changes in our server set-up, and I forgot all
about this load balancing (also because our main server was pretty stable)
(QuickDNS 3.01 runs on another machine). Eventually, I shut down the second
(for testing only) server, but still did not think of removing (as I said, I
forgot all about it) the load balancing record (which was set to 99%-1%,
BTW)
But at a given moment, the server (W* 4.3 /G4 /OS 9.04) started crashing
regularly (say, once every two days) (not related to DNS). While looking for
answers, we decided to install Kick-Off (great product, if I may say so).
BUT ! While the server was rebooting, the load-balancing did it's job (at
least, it tried), but as you guess, with the second server being down,
without success. This results in the domain being inaccessible (as if the
DNS server crashed).
Schematically: server goes down, load-balancing switches to non-existent
backup-server, then hangs (but not totally) ..., even after the main server
is back up !
How I found out ? All other domains remain accessible via the DNS, and the
particular site is accessible through it's IP address, but no longer via the
domain name. Only a reset of the DNS server (restart) solves the problem.
Rgds,
Nick
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