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Tue, 06 Jun 2023 11:16:04 -0400 From: Ludovic =?UTF-8?Q?Court=C3=A8s?= References: X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Octidi 18 Prairial an 231 de la =?UTF-8?Q?R=C3=A9volution, ?= jour du Pavot X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Tue, 06 Jun 2023 17:16:01 +0200 In-Reply-To: (Attila Lendvai's message of "Sat, 27 May 2023 10:33:41 +0000") Message-ID: <87v8g07ham.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: bug-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN ARC-Seal: i=1; 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bh=aWnUtFLp1b2/N/LlI+xWu+QL073yoIeGVwDQGAO7OgI=; b=ItOPBiVlrPdW1AZGsBgzaozFoQ+76eqvPlWh+VooU4wJjo8KoWUh5NeZQG9VEu+zIbMkXf 6qs2xLhTF9aKkMNlBUuOsmG16A8uRF/Rdizhykxvt3LKDFfdRSc0Y1KDmSce7HfSD2Y+9S weAf0HwBYk+RI3Pbzi0TbHL3eJO6ubNcXrHgw6lLf4nCstXUjw00O+SjTmRvAKJovmLsgg DZNHw0tWl8W7yT2oRwCffMx+plcn9WpJN5wfZVsoe1KfTxKY5Wxycwg+nNjEeY0u8xWP8N fGhJnyeIiq/Mt2VBR2sj7zsilWKlv4pvlv9K00PA6ZW5xHcgG/u95ForeMfpJQ== Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gnu.org header.s=fencepost-gnu-org header.b=CQceg1K1; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Scanner: scn0.migadu.com X-Migadu-Spam-Score: -5.79 X-Spam-Score: -5.79 X-Migadu-Queue-Id: A3FFEA8A0 X-TUID: TdI2pv/XrDBz Hi Attila, Attila Lendvai skribis: > [forked from: bug#53580: /var/run/shepherd/socket is missing on an otherw= ise functional system] > >> So I think we=E2=80=99re mostly okay now. The one thing we could do is l= oad >> the whole config file in a separate fiber, and maybe it=E2=80=99s fine t= o keep >> going even when there=E2=80=99s an error during config file evaluation? >> >> WDYT? > > > i think there's a fundamental issue to be resolved here, and addressing t= hat would implicitly resolve the entire class of issues that this one belon= gs to. > > guile (shepherd) is run as the init process, and because of that it may n= ot exit or be respawn. but at the same time when we reconfigure a guix syst= em, then shepherd's config should not only be reloaded, but its internal st= ate merged with the new config, and potentially even with an evolved shephe= rd codebase. Sorry to be direct: is there a concrete bug you=E2=80=99re reporting here? > i still lack a proper mental model of all this to succesfully predict wha= t will happen when i `guix system reconfigure` after i `guix pull`-ed my se= rvice code, and/or changed the config of my services. What happens is that =E2=80=98guix system reconfigure=E2=80=99 loads new se= rvices into the running shepherd. New services simply get started; services for which a same-named service is already running instead get registered as a =E2=80=9Creplacement=E2=80=9D, meaning that the new version of the servic= e only gets started when the user explicitly runs =E2=80=98herd restart SERVICE=E2=80= =99. Non-stop upgrades is ideal, but shepherd alone cannot do that. For instance, nginx supports that, and no init system could implement that on its behalf. Ludo=E2=80=99.