Re: [HTCondor-users] Communication Error: condor_status -constraint

[Rob <spamrefuse@xxxxxxxxx>]

----- Original Message -----

> From: Rob <spamrefuse@xxxxxxxxx>
> To: HTCondor-Users Mail List <htcondor-users@xxxxxxxxxxx>
> Cc:
> Sent: Wednesday, February 27, 2013 9:28 AM
> Subject: Re: [HTCondor-users] Communication Error: condor_status -constraint
>
> Hi,
>
> I am actually having a same or similar problem.
>
> HTCondor 7.9.1 runs on the Linux central manager and
> version 7.4.4 on the Windows XP execute machines.
>
> On the manager I run a cron script every 5 minutes, which creates over time
> a database with the HTCondor status of the pool. At the heart of the script is
> this line:
>
> condor_status -debug -total -constraint "target.Arch == \"INTEL\""
>
>
> Once in every few days I get an email from the cron daemon with:
>
>
> Status: R
> Error: communication error

Oops, the "-debug" flag I added later, before I sent the previous email.

Now, with the "-debug" I actually get following in the cron daemon email:


02/27/13 09:05:01 Enumerating interfaces: lo 127.0.0.1 up
02/27/13 09:05:01 Enumerating interfaces: em1 xxx.xxx.140.72 up
02/27/13 09:05:01 Collector central.manager.edu blacklisted; skipping
Error: communication error


(I have removed the actual IP number and hostname of the central manager)

Why is the hostname of the central manager blacklisted? It is an officially registered hostname!
And why does this blacklisting happen only once in a few days, whereas the status command is called every 5 minutes?

Rob.