From owner-freebsd-questions@FreeBSD.ORG Sat Apr 10 05:05:25 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C0FCD16A4CE for ; Sat, 10 Apr 2004 05:05:25 -0700 (PDT) Received: from gaff.hhhr.ision.net (gaff.hhhr.ision.net [195.180.9.213]) by mx1.FreeBSD.org (Postfix) with ESMTP id 14A3643D41 for ; Sat, 10 Apr 2004 05:05:24 -0700 (PDT) (envelope-from ohoyer@ohoyer.de) Received: from gaff.hhhr.ision.net (ohoyer@localhost [127.0.0.1]) by gaff.hhhr.ision.net (8.12.11/8.12.11) with ESMTP id i3AC5Qx0008989; Sat, 10 Apr 2004 14:05:27 +0200 (CEST) (envelope-from ohoyer@ohoyer.de) Received: from localhost (ohoyer@localhost)i3AC5PDx008986; Sat, 10 Apr 2004 14:05:26 +0200 (CEST) (envelope-from ohoyer@ohoyer.de) X-Authentication-Warning: gaff.hhhr.ision.net: ohoyer owned process doing -bs Date: Sat, 10 Apr 2004 14:05:25 +0200 (CEST) From: Olaf Hoyer Sender: ohoyer@gaff.hhhr.ision.net To: Grant Peel In-Reply-To: <006f01c41ee3$1e9160f0$6501a8c0@grant> Message-ID: <20040410140118.J8923@gaff.hhhr.ision.net> References: <006f01c41ee3$1e9160f0$6501a8c0@grant> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-questions@freebsd.org Subject: Re: Remote Single User Mode. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Apr 2004 12:05:25 -0000 On Sat, 10 Apr 2004, Grant Peel wrote: > Happy Easter all! > > Here is an off-the-wall question.... > > I have 4 servers in Toronto (I live in London, about 120 miles south). Most admin I can do remotely of course, but I was wondering, if there exists a software/hardware solution that might actually allow one to reboot any one of the machines remotely and alllow access in single user mode. Obviously, that machine would not be accessable via the normal netwrk method, but again, is there a KVM - software that would allow local access in single user mode VIA a network connection to one of the other servers, or the KVM directly? Hi! Well, as long as you can set up a serial console to them (whether in software, like described in the handbook, or via hardware BIOS redirection like Dell, HP and so on), then you could simply buy a remote console switch off-the-rack, and be happy. I worked a lot with the cyclades-TS series, you simply connect via ssh to them (they run embedded linux), and they forward this connection to the specific serial port. The also do other nifty things, you can have the console output of the servers logged via nfs to a remote machine etc. www.cyclades.com, they are not cheap, but are working well (once you got he right firmware, I'd go for 1.3.9 at the time of this writing, the 1.3.10 has other hitches I dislike) HTH Olaf -- Olaf Hoyer ohoyer@gaff.hhhr.ision.net Fuerchterliche Erlebniss geben zu raten, ob der, welcher sie erlebt, nicht etwas Fuerchterliches ist. (Nietzsche, Jenseits von Gut und Boese)