From owner-freebsd-hackers@freebsd.org Mon Aug 31 07:59:06 2015 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A54299C6303 for ; Mon, 31 Aug 2015 07:59:06 +0000 (UTC) (envelope-from timp87@gmail.com) Received: from mail-wi0-x231.google.com (mail-wi0-x231.google.com [IPv6:2a00:1450:400c:c05::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FF0A176C; Mon, 31 Aug 2015 07:59:06 +0000 (UTC) (envelope-from timp87@gmail.com) Received: by wicpl12 with SMTP id pl12so19608368wic.1; Mon, 31 Aug 2015 00:59:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=JLuHhuzP+6Y+Swhy6DOfl/92YMkukLYKo2Etfrj6CRs=; b=cucLpho6liQbGiOFJbEGb8z9mQ+xDU1yyZuzjfVfVWGApi/D07GgccgpuYQieVvHCh VcDMek7tDmijKqQH9Jt4wf/G6KYWxKzHGXxv8qc6kQhXfJrI3wUGnIF5VCC/wqzvmTBW 4ZrF7stP6LjSgNGvIgvXUGOV003IuwRfZxhBirULPKt++37Z1VbzPbBm6EgycM/d07Rn eF7wKdJycoPzYJrwpGZtlga55esCU31tQp18uMEllWfrd58tGgLhTBIP7NTZmHETYvGS S/fhFFItBehTovgKoc8T8k01a6YkBpN+6IMLemGMy46dLGlxjL/VAK4yvyDj+A0Md/UL cT+w== MIME-Version: 1.0 X-Received: by 10.194.172.233 with SMTP id bf9mr25741123wjc.107.1441007944841; Mon, 31 Aug 2015 00:59:04 -0700 (PDT) Received: by 10.28.9.195 with HTTP; Mon, 31 Aug 2015 00:59:04 -0700 (PDT) In-Reply-To: <55E1CA2D.5020203@freebsd.org> References: <55DF261C.80009@freebsd.org> <20150827200534.GH16003@e-new.0x20.net> <55E086D3.1040700@freebsd.org> <55E1803E.7080706@freebsd.org> <55E1CA2D.5020203@freebsd.org> Date: Mon, 31 Aug 2015 10:59:04 +0300 Message-ID: Subject: Re: How to control and setup service? From: Pavel Timofeev To: Allan Jude Cc: freebsd-hackers@freebsd.org Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 Aug 2015 07:59:06 -0000 2015-08-29 18:05 GMT+03:00 Allan Jude : > On 2015-08-29 05:49, Stefan Esser wrote: >> Am 28.08.2015 um 18:51 schrieb Pavel Timofeev: >>> Sorry for top posting! It's pretty hard to write email walking under >>> heavy rain and umbrella. >>> So, I talked about special key, not default behaviour. >>> Let me give you an example. >>> You got a server (or ten) which was/were somehow configured before you. >>> You want to reconfigure it/them. You don't care how and where it's >>> already configured, you just want to set particular rcvars and be sure >>> that no other rcvars are set. >>> >>> Before you came it was: >>> mysql_enable="YES/NO" # no matter >>> mysql_datadir="/mycozystorage/db/mysql" >>> mysql_defaults_extra_file="/mycozystorage/mysql/my.cnf" >>> mysql_plugin_dir="/somewhere/lib/mysql/plugin" >>> mysql_log_error="/mycozystorage/db/mysql/hostname.err" >>> >>> then you run something like (look at -k key) >>> # service -k mysql-server enable set datadir "/mysqldb" log_error >>> "/mysqllogs/hostname.err" >>> it becomes >>> mysql_enable="YES" >>> mysql_datadir="/mysqldb" >>> mysql_log_error="/mysqllogs/hostname.err" >>> >>> I. e. sets what requested and deletes rcvars which was not requested. >> >> I think that the removal of the previous config state should not come >> as the side-effect of some "set" command. >> >> I'd rather introduce a now verb for this purpose, which has the effect >> of clearing all previous settings for a service, instead of overloading >> the "set" operation. >> >> E.g.: >> >> # service mysql-server clearconfig >> >> Not sure about the best command name to use, it could also be "clean" >> or "initconfig" or "defaultconfig". The semantics is that all the >> rc.conf assignments for thise service are removed (including the >> enable line) and the defaults from defaults/rc.conf become effective >> again. >> >> Regards, STefan >> _______________________________________________ >> freebsd-hackers@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-hackers >> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >> > > I agree that that is a better design, as I would almost never actually > want to remove those extra settings, and if it happened unexpectedly, I > would be quite upset. I suggested special key for that, so it can't happen unexpectedly, IMO. > > -- > Allan Jude >