supervision - discussion about system services, daemon supervision, init, runlevel management, and tools such as s6 and runit
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From: "J. Lewis Muir" <jlmuir@imca-cat.org>
To: Laurent Bercot <ska-supervision@skarnet.org>
Cc: supervision@list.skarnet.org
Subject: Re: runit patches to fix compiler warnings on RHEL 7
Date: Mon, 2 Dec 2019 15:06:03 -0600	[thread overview]
Message-ID: <20191202210603.w42xmgofau4xoemh@mink.imca.aps.anl.gov> (raw)
In-Reply-To: <20191202175710.pl475v2li5xnhrho@gromit.local>

On 12/02, J. Lewis Muir wrote:
> So, if s6 can do something similar, I'd be happy to try it out!  Can it?

Reading more, it seems the answer is yes:

  https://skarnet.org/software/s6/notifywhenup.html

So, s6 has a built-in mechanism where, when the supervised process is
available ("ready" in the s6 nomenclature), it writes a line to a file
descriptor and closes it.

If the supervised process does not support the file descriptor
notification mechanism, a workaround is the s6-notifyoncheck program:

  https://skarnet.org/software/s6/s6-notifyoncheck.html

This all looks promising!  Thank you, Laurent, for writing and
maintaining s6!

Lewis


  reply	other threads:[~2019-12-02 21:06 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-25 21:43 J. Lewis Muir
2019-11-27 20:33 ` J. Lewis Muir
2019-11-28  7:59   ` Ben Franksen
     [not found]   ` <ecdf4d8f-93f6-3f9f-b84c-351fa91c7f02@uni-bremen.de>
2019-11-28 19:04     ` Laurent Bercot
2019-11-28 20:39       ` Steve Litt
2019-11-28 22:17         ` runit or s6 (was: runit patches to fix compiler warnings on RHEL 7) Laurent Bercot
2019-11-29 14:09       ` runit patches to fix compiler warnings on RHEL 7 Jan Braun
2019-11-29 21:46         ` Dewayne Geraghty
2019-11-30  1:22           ` Colin Booth
2019-11-30  0:21         ` Colin Booth
2019-11-30  3:14           ` Steve Litt
2019-11-30 13:32           ` Jeff
2019-11-30 13:46             ` Jeff
2019-11-30 10:15         ` s6 usability (was: runit patches to fix compiler warnings on RHEL 7) Laurent Bercot
2019-11-30 14:32           ` Jeff
2019-11-30 18:58             ` Laurent Bercot
2019-12-02 12:07               ` Jeff
2019-12-02 22:20                 ` Laurent Bercot
2019-12-02  2:47           ` Steve Litt
2019-12-02  3:37             ` s6 usability Dewayne Geraghty
2019-12-02 10:24               ` fungal-net
2019-12-02 21:32             ` s6 usability (was: runit patches to fix compiler warnings on RHEL 7) Laurent Bercot
2019-12-02 23:17               ` s6 usability Samuel Holland
2019-12-03 22:10                 ` Steve Litt
2019-12-21 11:49                   ` Jan Braun
2019-12-04 12:15                 ` Jonathan de Boyne Pollard
2019-12-04 21:02                 ` Laurent Bercot
2019-12-04  1:30             ` s6 usability (was: runit patches to fix compiler warnings on RHEL 7) Casper Ti. Vector
2019-12-21  9:26           ` s6 usability Jan Braun
2019-12-21 18:36             ` Guillermo
2019-12-21 21:19             ` Colin Booth
2019-12-22  1:05               ` Jan Braun
2019-12-22  8:30                 ` Colin Booth
2019-12-21 23:46             ` Laurent Bercot
2019-12-22  5:53               ` Jan Braun
2019-12-22 20:33               ` Steve Litt
2019-12-22 23:20                 ` Laurent Bercot
2019-12-23  1:28                   ` Oliver Schad
2019-12-23  9:14                     ` Laurent Bercot
2019-12-23 10:15                     ` Jonathan de Boyne Pollard
2019-12-24  0:18                       ` Oliver Schad
2019-12-23  1:57                   ` Steve Litt
2019-12-23  9:00                     ` Laurent Bercot
2019-12-22 23:47                 ` Dewayne Geraghty
2019-12-04 11:36         ` runit patches to fix compiler warnings on RHEL 7 Jonathan de Boyne Pollard
2019-12-04 16:40           ` J. Lewis Muir
2019-12-04 20:48             ` Laurent Bercot
2019-12-04 21:32               ` J. Lewis Muir
2019-12-04 21:06             ` Steve Litt
2019-12-04 21:50               ` Laurent Bercot
     [not found]                 ` <20191205132736.7f501460@puter>
2019-12-08 19:10                   ` Laurent Bercot
2019-12-02 17:57       ` J. Lewis Muir
2019-12-02 21:06         ` J. Lewis Muir [this message]
2019-12-02 22:22           ` Laurent Bercot
2019-12-02 21:58         ` Laurent Bercot
2019-12-03 10:57           ` Benjamin Franksen
2019-12-04 10:43       ` Jonathan de Boyne Pollard
2019-12-02 17:13     ` J. Lewis Muir
2019-12-04 11:13       ` Jonathan de Boyne Pollard

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