From: "Ludovic Courtès" <ludo@gnu.org>
To: Bruno Victal <mirai@makinata.eu>
Cc: 62163@debbugs.gnu.org, Maxim Cournoyer <maxim.cournoyer@gmail.com>
Subject: bug#62163: Suppress logging shepherd evaluation in mcron.log
Date: Fri, 31 Mar 2023 14:18:34 +0200 [thread overview]
Message-ID: <878rfd5d2d.fsf@gnu.org> (raw)
In-Reply-To: <e71b366d-9002-ff25-623a-5fac660b9481@makinata.eu> (Bruno Victal's message of "Thu, 30 Mar 2023 12:21:18 +0100")
Hi,
Bruno Victal <mirai@makinata.eu> skribis:
> On 2023-03-30 11:22, Ludovic Courtès wrote:
[...]
>>> It queries shepherd to see if a service is running and sends a restart if required.
>>
>> Isn’t that what #:respawn? #t is supposed to do? :-)
>>
>> If you find that #:respawn? doesn’t work, then we should fix it.
>
> Oh, I should have explained better here.
> Re-spawn works, it's the (daemon) service that might misbehave/go unresponsive without crashing,
> i.e. HTTP backend stops responding to API requests but the server is still up.
> The job performs a "health-check" and restarts it if it doesn't get the appropriate response.
OK. It still means that the service in question is kinda broken, right?
> A concrete situation where this could be of use is for logs.guix that occasionally stops
> recording.
Oh you mean ‘goggles-bot’? Yeah I wonder why it occasionally goes
wrong, but really I think Someone™ should debug it (it’s a small script
in maintenance.git).
>> You can send messages to the bitbucket with:
>>
>> (parameterize ((shepherd-message-port (%make-void-port "w0")))
>> …)
>
> Thanks!
> I'm still curious as to exactly what/which lines cause shepherd to output the lines.
The “Evaluating” line is emitted by shepherd, logged, and sent to
clients (for instance when you do ‘herd eval root '(+ 2 3)'’).
(gnu services herd) provides a client that echoes those messages to
‘shepherd-message-port’.
Does that make sense?
Ludo’.
next prev parent reply other threads:[~2023-03-31 12:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-13 15:59 bug#62163: Suppress logging shepherd evaluation in mcron.log Bruno Victal
2023-03-24 12:22 ` Maxim Cournoyer
2023-03-28 16:25 ` Ludovic Courtès
2023-03-28 16:32 ` Bruno Victal
2023-03-30 10:22 ` Ludovic Courtès
2023-03-30 11:21 ` Bruno Victal
2023-03-31 2:10 ` Maxim Cournoyer
2023-03-31 12:18 ` Ludovic Courtès [this message]
2023-03-31 11:52 ` Bruno Victal
2023-03-31 22:10 ` Ludovic Courtès
2023-04-27 13:24 ` Ludovic Courtès
2023-04-27 16:12 ` Bruno Victal
2023-04-28 3:52 ` Maxim Cournoyer
2023-05-03 20:01 ` Ludovic Courtès
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