[410] in athena10
Re: Automatic updates for Athena 10
daemon@ATHENA.MIT.EDU (Anders Kaseorg)
Mon Aug 11 17:00:26 2008
From: Anders Kaseorg <andersk@MIT.EDU>
To: Greg Hudson <ghudson@mit.edu>
Cc: Kenneth Arnold <kcarnold@mit.edu>, athena10@mit.edu
In-Reply-To: <1218486101.12433.177.camel@error-messages.mit.edu>
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Date: Mon, 11 Aug 2008 16:55:12 -0400
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On Mon, 2008-08-11 at 16:21 -0400, Greg Hudson wrote:
> 2. Create a cron.hourly job which checks if anyone is logged in and
> runs an update, ideally blocking logins while it runs.
> …
> On desynchronization: I am less concerned about this than I was for
> 9.4 updates.
It would be extraordinarily annoying to walk into a cluster at :00
between classes, only to watch all the machines fire this cron.hourly
job at the same time, blocking all logins for the next few minutes. The
extra effort to select a random minute (or even a minute other
than :00!) would be well spent.
Anders
