supervision - discussion about system services, daemon supervision, init, runlevel management, and tools such as s6 and runit
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From: Paul Sopka <psopka@sopka.ch>
To: supervision@list.skarnet.org, gdiazhartusch@gmail.com
Subject: Re: Scripting Stage 3 and 4
Date: Sat, 11 Jan 2025 16:29:37 +0100	[thread overview]
Message-ID: <69072b73-e342-44fe-88bd-ff4052bd88ba@sopka.ch> (raw)
In-Reply-To: <CADQ2Nw_oCD=bk__4NezC8SpA=fKUdUNCy5koKECGiz_zykr2dg@mail.gmail.com>


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> May I ask if there is a purpose to this other than doing it as a
> learning experience (if so, then by all means carry on)? Do you see a
> problem with just using current s6-linux-init?
Of course you may ask!
Initially I wanted to learn and understand a proper (init/)shutdown 
procedure of UNIX like OS's.
But I figured, that if the scripted procedures turn out elegant and 
robust enough,
which - in my opinion - seems to be the case (again everybody please 
point out any flaws you find),
I would like to use them over s6-linux-init because

a) The scripts are very easy to port to other UNIX like OS's.
b) I am a big fan of 1 tool 1 job combined in a script.
c) The scripts are easier to understand (and modify) for sysadmins with 
little programming background.

I see no problem at all in s6-linux-init, it has worked 100% reliable on 
my machine for half a year now.

> Perhaps you already know, but if you are interested in comparing, one
> can still download s6-linux-init-0.4.0.1 from the skarnet.org website
> for studying, which is the last version that used an execline stage1
> init, performed the shutdown procedure in .s6-svscan/finish and
> shipped small C programs that probably did the same thing that
> linux-powertool does here, before the change in package design —which
> also surprised me a the time—. Although s6 dropped in version 2.10.0.0
> the functionality that allowed those to work, and you'd need
> skalibs-2.8.0.1 to be able to actually build and run that version of
> s6-linux-init-maker and s6-{halt,poweroff,reboot}.
Thanks for the heads up!
I did not know about that, that was before I discovered skarnet.
I will definitely look into that.

Regards,

Paul


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      reply	other threads:[~2025-01-11 15:29 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-09 20:25 Paul Sopka
2025-01-09 23:19 ` Laurent Bercot
2025-01-11  8:30   ` Paul Sopka
2025-01-11 12:21     ` Re[2]: " Laurent Bercot
2025-01-11 15:15       ` Paul Sopka
2025-01-11 13:22 ` Guillermo
2025-01-11 15:29   ` Paul Sopka [this message]

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