GNU bug report logs - #36754
SSH connections to hydra-slave{1,2,3} fail during builds

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Mark H Weaver <mhw <at> netris.org>
Cc: Ricardo Wurmus <rekado <at> elephly.net>, Marius Bakke <mbakke <at> fastmail.com>, 36754 <at> debbugs.gnu.org
Subject: bug#36754: SSH connections to hydra-slave{1, 2, 3} fail during builds
Date: Wed, 24 Jul 2019 16:56:35 +0200

Hello,

Mark H Weaver <mhw <at> netris.org> skribis:

> Ludovic Courtès <ludo <at> gnu.org> wrote:
>> I noticed that connections to the machines were unstable (using
>> OpenSSH’s client).  That is, the connection would eventually “hang”,
>> apparently several times a day.
>>
>> Currently we have an SSH tunnel set up on berlin to connect to each of
>> these machines via overdrive1.guixsd.org.  This setup proved to be
>> robust in the past (we used it to connect to another build machine), so
>> I suspect something’s wrong on “your” end of the network.  It’s hard to
>> tell exactly what, though.
>>
>> Ideas?
>
> Okay, I'll look into it.  I'm very busy with something else for the next
> couple of days, but I'll try to get to it in the next week.

OK!

>> If it’s causing build failures, I’m afraid we’ll have to comment out
>> those machines from berlin’s machines.scm until we’ve figured it out.
>
> Agreed.

I’ve commented them out now.

Thanks,
Ludo’.

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