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20040920:LDM failover



Hi David,

> request DDPLUS|IDS      ".*" atm.geo.nsf.gov PRIMARY
> request HDS     ".*" atm.geo.nsf.gov PRIMARY
> request DDPLUS|IDS      ".*" chisel.rap.ucar.edu ALTERNATE
> request HDS     ".*" chisel.rap.ucar.edu ALTERNATE


Given this configuration, if atm goes down..as it is currently, you
~should be getting the feed from chisel.

Cheers,

Jeff
---------------------------------------------------------------------
Jeff Weber                                    address@hidden        :
Unidata Program Center                        PH:303-497-8676        :
University Corp for Atmospheric Research      3300 Mitchell Ln       :
http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000  :
---------------------------------------------------------------------

On Mon, 20 Sep 2004, Unidata Support wrote:

>
> ------- Forwarded Message
>
> >To: Unidata Support <address@hidden>
> >cc: address@hidden
> >From: David Yeung <address@hidden>
> >Subject: Re: 20040919: Failed to connect to atm.geo.nsf.gov
> >Organization: UCAR/Unidata
> >Keywords: 200409201152.i8KBqGnJ006246
>
> Sorry, I should have received your email regarding  the inaccessible of
> the host.
> I have just overlooked it. But I have another question, here is my ldmd.conf
>
> request DDPLUS|IDS      ".*" atm.geo.nsf.gov PRIMARY
> request HDS     ".*" atm.geo.nsf.gov PRIMARY
> request DDPLUS|IDS      ".*" chisel.rap.ucar.edu ALTERNATE
> request HDS     ".*" chisel.rap.ucar.edu ALTERNATE
>
> When atm.geo.nsf.gov goes down, will the ldm automatically switch to
> chisel.rap.ucar.edu? I am running LDM 6.0.14.
>
> Thanks
>
> David Yeung
> Hong Kong University of Science & Technology
>
>
> Unidata Support wrote:
>
> >>From: David Yeung <address@hidden>
> >>Organization: Hong Kong University of Science & Technology
> >>Keywords: 200409190645.i8J6jvnJ006933 IDD
> >>
> >>
> >
> >Hi David,
> >
> >
> >
> >>We are not able to get LDM feed from atm.geo.nsf.gov
> >>since around 09/19 00:00 UTC, and we are not even able to ping
> >>that host. Is there any problem in the atm.geo.nsf.gov?
> >>
> >>
> >
> >Yes, atm became inaccessible at approximately 8:30 Saturday morning.
> >A quick check shows that it remains inaccessible now.
> >
> >At about 9 am yesterday, I sent out a note to the ldm-users email list
> >to failover to alternate feed sites.  Here is the text:
> >
> >  From address@hidden  Sat Sep 18 08:57:21 2004
> >  To: address@hidden
> >  Subject: 20040918: IDD top level relay node atm.geo.nsf.gov down
> >  Date: Sat, 18 Sep 2004 08:57:20 -0600
> >
> >  >From: Unidata User Support <address@hidden>
> >  >Organization: Unidata Program Center/UCAR
> >  >Keywords: IDD atm failover
> >
> >  IDD sites feeding off of atm.geo.nsf.gov:
> >
> >  The top level IDD relay node atm.geo.nsf.gov is currently inaccessible.
> >  If you feed from atm, please switch to feed from your failover.
> >
> >  If your failover site is inaccessible, please failover to one of the
> >  following machines using the preferance order listed:
> >
> >  IDD relay node             datastreams available
> >  --------------------------+----------------------------
> >  emo.unidata.ucar.edu       all non-restricted feeds
> >  oliver.unidata.ucar.edu    all non-restricted feeds
> >  unidata2.ssec.wisc.edu     IDS|DDPLUS, HDS, FSL2, UNIWISC, NNEXRAD, FNEXRAD
> >  thelma.ucar.edu            all non-restricted feeds
> >
> >  We will send an email when we believe that it is safe to fail back
> >  to atm.
> >
> >  Tom Yoksas
> >
> >Since I see that you are subscribed to the ldm-users email list under
> >address@hidden, you should have received the message.  Did you not
> >receive the notice to failover?  If so, we will have to figure out why
> >the email did not get through to you.
> >
> >
> >
> >>Regards
> >>David Yeung
> >>Hong Kong University of Science & Technology
> >>
> >>
> >
> >Cheers,
> >
> >Tom Yoksas
> >--
> >NOTE: All email exchanges with Unidata User Support are recorded in the
> >Unidata inquiry tracking system and then made publicly available
> >through the web.  If you do not want to have your interactions made
> >available in this way, you must let us know in each email you send to us.
> >
> >
>
> --
> NOTE: All email exchanges with Unidata User Support are recorded in the
> Unidata inquiry tracking system and then made publicly available
> through the web.  If you do not want to have your interactions made
> available in this way, you must let us know in each email you send to us.
>
> ------- End of Forwarded Message
>


NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.