fenics team mailing list archive

[Andy Ray Terrel <andy.terrel@xxxxxxxxx>]

DNS records are cached so you don't always have to wait for the DNS
server.  This caching can happen at the ISP level and higher as well.
By flushing your DNS cache you are removing the record you received.
Usually when one knows that an ip address is going to change, you set
a lower time out and wait the appropriate amount of time, which was
determined by your old timeout, before changing it.  But the issue
could be local or, if enough people are requesting your page, based on
the ISP or borders of autonomous systems.

Its just the infrastructure of the www, I'm guessing your old provider
didn't care about the minutia of managing a seamless transition since
they were losing you.  I would expect that this problem will resolve
itself within the day or at worst the week.

-- Andy

On Wed, Nov 9, 2011 at 10:26 AM, Anders Logg <logg@xxxxxxxxx> wrote:
> You mean this is a local issue?
>
> I still don't see why the service should be disrupted. The new DNS was
> started by the new provider and I didn't tell the old to stop. Both
> point to the same server.
>
> Anyway, it's working for me now (in Sweden), both fenicsproject.org
> and fenicsproject.com (which is one of a range of new addresses that I
> have registered just in case).
>
> Can people from various locations report whether things are working?
>
> Something that's still not working is fenicsproject.org (without the
> www) but I think that's something we (i.e. Harish) need to configure
> locally.
>
> --
> Anders
>
>
> On Wed, Nov 09, 2011 at 07:57:43AM -0600, Andy Ray Terrel wrote:
>> So usually when changing your DNS records you need to lower the time
>> out to something small like 2 hours.  Usually its set for a week or
>> month. My guess is you have a bad DNS record and can flush your dns
>> cache (worked for me at least).
>>
>> https://my.bluehost.com/cgi/help/272
>>
>> -- Andy
>>
>> On Wed, Nov 9, 2011 at 6:13 AM, Anders Logg <logg@xxxxxxxxx> wrote:
>> > On Tue, Nov 08, 2011 at 10:26:39PM -0600, Douglas Arnold wrote:
>> >
>> >> It seems that www.fenics.org is not working.  For at least several hours, I
>> >> cannot get to it (although I can reach it at http://communalis.simula.no/www.fenicsproject.org).
>> >
>> > The reason for this is that I have moved the domain name to a new
>> > registrar because of billing problems with the old one, and yesterday
>> > the new registrar activated DNS for fenicsproject.org. I've been in
>> > contact with them and they claim everything is configured correctly
>> > and it seems to be as far as I can tell.
>> >
>> > What I think is the problem right now is that the old registrar is
>> > still sending out DNS information which is confusing the DNS system.
>> > I've asked them to stop.
>> >
>> > I've used nslookup to try to diagnose the problem and here's the
>> > current results using different combinations of DNS servers and addresses:
>> >
>> > Old DNS (bahnhof):
>> >
>> >                        ns1.bahnhof.net   ns2.bahnhof.net
>> > --------------------------------------------------------------------
>> > fenicsproject.org       REFUSED           WORKS
>> > www.fenicsproject.org   REFUSED           WORKS
>> > fenicsproject.com       REFUSED           NO ANSWER
>> > www.fenicsproject.com   REFUSED           NO ANSWER
>> >
>> > New DNS (nameisp):
>> >
>> >                        ns1.nameisp.info  ns2.nameisp.info
>> > --------------------------------------------------------------------
>> > fenicsproject.org       NO ANSWER         NO ANSWER
>> > www.fenicsproject.org   WORKS             WORKS
>> > fenicsproject.com       NO ANSWER         NO ANSWER
>> > www.fenicsproject.com   WORKS             WORKS
>> >
>> > Anyone knows this stuff, please help me out diagnosing the problems or
>> > confirm the above, using nslookup or some other tool. Here's a short
>> > list of instructions:
>> >
>> > $ nslookup
>> >> server ns1.nameisp.info
>> >> www.fenicsproject.org
>> >
>> > etc.
>> >
>> >> I am planning to present FEniCS to a class in 11 hours, so I hope it
>> >> will be back!
>> >
>> > I'm very sorry for the bad timing...
>> >
>> > In the meantime, just use the IP address:
>> >
>> >    http://128.39.36.31
>> >
>> > Then click 'www.fenicsproject.org'.
>> >
>> >
>> > _______________________________________________
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>> >
>