Re: S6 Queries

From: Steve Litt <>
Date: Mon, 2 Aug 2021 16:42:01 -0400

Laurent Bercot said on Mon, 02 Aug 2021 19:39:47 +0000

>>I thought the way to do what the OP asked is:
>>s6-svc -u myrequirement || exit 1
>>exec mydaemon -myarg1 -myarg2
> This is not a good idea in a s6-rc installation, because it sends
>raw s6 commands, which may mess with the service state as viewed by
>s6-rc. Also, it sends control commands to a service from another
>service's run script, which is bad form in general: it is
>unintuitive that starting the mydaemon service also causes the
>myrequirement service to be started. Dependencies should be handled at
>the service manager level, not at the process supervision level.

Do you think this is any better?

test_for_myrequirement || exit 1
exec mydaemon -myarg1 -myarg2


Steve Litt
Spring 2021 featured book: Troubleshooting Techniques of the Successful
Received on Mon Aug 02 2021 - 22:42:01 CEST

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