From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms9.migadu.com with LMTPS id yC/xDAqHQmSdEwEASxT56A (envelope-from ) for ; Fri, 21 Apr 2023 14:52:26 +0200 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id yB/KDAqHQmTWRQEAauVa8A (envelope-from ) for ; Fri, 21 Apr 2023 14:52:26 +0200 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id C25B4D09F for ; Fri, 21 Apr 2023 14:52:25 +0200 (CEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ppqFJ-0004AX-8s; Fri, 21 Apr 2023 08:52:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ppqFA-00049v-5a for guix-patches@gnu.org; Fri, 21 Apr 2023 08:52:05 -0400 Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ppqF8-0005JA-LV for guix-patches@gnu.org; Fri, 21 Apr 2023 08:52:03 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ppqF8-0002eD-4O for guix-patches@gnu.org; Fri, 21 Apr 2023 08:52:02 -0400 X-Loop: help-debbugs@gnu.org Subject: [bug#62802] [PATCH 0/4] Add reload action to syslog service. Resent-From: Maxim Cournoyer Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Fri, 21 Apr 2023 12:52:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 62802 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: patch To: Ludovic =?UTF-8?Q?Court=C3=A8s?= Cc: 62802@debbugs.gnu.org Received: via spool by 62802-submit@debbugs.gnu.org id=B62802.16820814689964 (code B ref 62802); Fri, 21 Apr 2023 12:52:02 +0000 Received: (at 62802) by debbugs.gnu.org; 21 Apr 2023 12:51:08 +0000 Received: from localhost ([127.0.0.1]:39591 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ppqEF-0002ab-OW for submit@debbugs.gnu.org; Fri, 21 Apr 2023 08:51:08 -0400 Received: from mail-qt1-f180.google.com ([209.85.160.180]:51541) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ppqED-0002ZZ-Ji for 62802@debbugs.gnu.org; Fri, 21 Apr 2023 08:51:05 -0400 Received: by mail-qt1-f180.google.com with SMTP id d75a77b69052e-3ef32014101so19518151cf.3 for <62802@debbugs.gnu.org>; Fri, 21 Apr 2023 05:51:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1682081460; x=1684673460; h=content-transfer-encoding:mime-version:user-agent:message-id :in-reply-to:date:references:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to; bh=vqG2A+he4QCIvbPuoYdZBHhMVkjDAjt8yUiDtZq9xy8=; b=K8hGN3FM3J8gkIEbiorRAg7ax96eAQ01znnBeQZOANdxJFvcbYm2TarSfZjYsatVhm Af57EWzPQtQ/xKy1pHgH/I9r/VZYABnNHux+vjEM+9RjK91iJjKFG/t4zjYkht7VgYw3 Yx+ah6WBRPhww5Ufe22083l16ldLAyTb1leWHh5JAc43IXfaN4Ae5qLDDn4A+lh2OpL+ U8NtIDBLyatqrHNSG0+bktuu2pGsv4B7G3C67Vu5P7Nc/4QFczT9y6w05nqxrYwn3CV7 /0PkEY1fDqimxSgr6h3T6Mg9jUeNuPaVZs56VJk9G1qRDfpn5OI/RCwxsEnCRWyLIxuf 5l7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682081460; x=1684673460; h=content-transfer-encoding:mime-version:user-agent:message-id :in-reply-to:date:references:subject:cc:to:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=vqG2A+he4QCIvbPuoYdZBHhMVkjDAjt8yUiDtZq9xy8=; b=Kf9A1Wh07c+j3Tmn/iwAyUXncDW3o4fzLyTo28IEkZIj3GFAc4+sbBckAaCLQKtgCD LPHmMJoqvhBm10of4WrBHtzgatsBLUAeE/5Lgja59ezpdXbTJLDShdvepuc6PtCpig0E YgZrqbNjHt4K+Br3Y7ZlSiTymcVmlK9bYpoy1Ec26X0Ncie08Ldo4XSXeyHJXjJ+Qi9u HnHAD/f8EBj4yRuvd+1fWro3houbvKhURogIMnVCzVn/x1f8s4le/Tr9v3PIoB7EBynm L7Ml69wsvwIeZtJBV+v86+hfmKfCIkfn5Is+1awBgTgGPQKZDSB8b/AYvMerQpTu0v5q ZENA== X-Gm-Message-State: AAQBX9fXoQPaMgDPZ5EP8AYRF9R25Z6HuDmBegMnhw6oCd29v2Hag3FG OMDQTw1kgMsxrOk/95m5kNrhkJbHqA4= X-Google-Smtp-Source: AKy350abaZhbNrxa+0CFPqYg4gT6V++AhU8p2KSzyg9DG4ndgVUg0GVXwr9JtH276KYOO+7946kQ4Q== X-Received: by 2002:a05:622a:253:b0:3e6:457f:9ec6 with SMTP id c19-20020a05622a025300b003e6457f9ec6mr8243507qtx.13.1682081459764; Fri, 21 Apr 2023 05:50:59 -0700 (PDT) Received: from hurd (dsl-10-131-177.b2b2c.ca. [72.10.131.177]) by smtp.gmail.com with ESMTPSA id m7-20020a05620a24c700b0074de8d07052sm1303032qkn.47.2023.04.21.05.50.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Apr 2023 05:50:59 -0700 (PDT) From: Maxim Cournoyer References: <20230413011530.1960-1-maxim.cournoyer@gmail.com> <20230413012408.2759-1-maxim.cournoyer@gmail.com> <87v8hqshmz.fsf_-_@gnu.org> Date: Fri, 21 Apr 2023 08:50:58 -0400 In-Reply-To: <87v8hqshmz.fsf_-_@gnu.org> ("Ludovic =?UTF-8?Q?Court=C3=A8s?="'s message of "Thu, 20 Apr 2023 17:22:28 +0200") Message-ID: <87354txutp.fsf@gmail.com> 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: guix-patches@gnu.org List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-patches-bounces+larch=yhetil.org@gnu.org Sender: guix-patches-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN ARC-Seal: i=1; s=key1; d=yhetil.org; t=1682081546; a=rsa-sha256; cv=none; b=BbLRJLAnOKbtp3jrIoEtGHzDBIzGau45YdHXtORy3jrRXNlrezRmOR3R42hb6Vosdn6rbo pWaIkpAvPPEw9EM+YOUJO2QANmfpnIqpkxsV5WtThf2/qP1i9v4a9S5ua7ish8q2IRe86P 6BWo7xDMXue0kf/1XSNgKqdY99UXRWz1X+g/AG3NADZGSoejDl7p0KpJ0QKUr9e8+3rrNf UrS7gfdgpoN4No+ni7TSQlhL/RqewEhx6kUfNON7Qe/7bhqZ+EBlSacnYO2E1Lz+HpRBWw atc0+nQjEToivv7YSIkj2q8flOAmivdki2rQcCkqhFRaQPjeRtzrfY7hoI6Cag== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20221208 header.b=K8hGN3FM; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "guix-patches-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-patches-bounces+larch=yhetil.org@gnu.org" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1682081546; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding:resent-cc: resent-from:resent-sender:resent-message-id:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=vqG2A+he4QCIvbPuoYdZBHhMVkjDAjt8yUiDtZq9xy8=; b=BgETbo4J9eIp666QCGmc24Wr5sGlVFM4fkQesnupJnSfsixIjHjEWFuNy3GfPWmrMRpVL4 o7vg6w4092QQMKUVtJgDc5fO0PUFX0MgmPh+p6m7eJDajT0n5hOnsc7nbUfE2EPhAjxIjZ CO+D2guU7eQDtE1FBhtoxNoKv6YeBj+c/Sk5OcsvX6OL/bsYPrdkqndunN/0RVRGHG10wu 9gd+0gW2PancgGKjti3FrpHMpp5b+4nmX2jMz/7S+XoFZ1dlbfm5e7qnK9Dq71Zb/vYo2Y mWX6I4Lmlgd5GvRrFQfAP3EEqXMSVkO3sUPseDYGGneMU04Ez4aVvetmym3h1w== X-Migadu-Spam-Score: -1.11 X-Spam-Score: -1.11 X-Migadu-Queue-Id: C25B4D09F X-Migadu-Scanner: scn0.migadu.com Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20221208 header.b=K8hGN3FM; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "guix-patches-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-patches-bounces+larch=yhetil.org@gnu.org" X-TUID: sBmqHj6WwdXU Hello, Ludovic Court=C3=A8s writes: > Maxim Cournoyer skribis: > >> Having the configuration live at a static location makes it possible to >> hot-reload it. >> >> * gnu/services/base.scm (syslog.conf): New variable. >> (syslog-etc, syslog-shepherd-service): New procedures. >> (syslog-service-type): Rewrite using the above new variable and procedur= es, >> extending etc-service-type with its configuration file. > > I=E2=80=99m really not a fan of static configuration file names: you can = never > be sure what config the service is using=E2=80=94compare this with the > unambiguous =E2=80=98--config=3D/gnu/store/=E2=80=A6example.conf=E2=80=99. Right; although now if you aren't sure what is used you can 'reload' it, eh :-). > Unfortunately there=E2=80=99s often no other option if we want to support= live > reconfiguration=E2=80=94there=E2=80=99s only so much a signal can convey. > > So I guess it=E2=80=99s a =E2=80=9Cweak accept=E2=80=9D from me, because = live reload is useful. OK! > With the Shepherd in =E2=80=98master=E2=80=99, there=E2=80=99s a hook to = change a service=E2=80=99s > =E2=80=9Crunning value=E2=80=9D so it should be possible to stop the prev= ious process, > start a new one, and update the service=E2=80=99s running value (which is= not > equivalent to SIGHUP, but maybe good enough for some cases). Wouldn't that be equivalent to restarting the service? I wasn't aware of the new hook facility, I'll have to read on it, thanks! > A simpler approach might be run the service in a container with > /gnu/store/=E2=80=A6conf mapped to a fixed location, and somehow update t= hat > mapping as we go. Food for thought! Interesting idea... although it'd only be compatible with Linux and I dislike writing special cases in services (or anywhere if I can help it). --=20 Thanks, Maxim