From owner-freebsd-stable Fri Mar 17 7:35:37 2000 Delivered-To: freebsd-stable@freebsd.org Received: from kci.kciLink.com (kci.kciLink.com [204.117.82.1]) by hub.freebsd.org (Postfix) with ESMTP id 5E22437BDFA for ; Fri, 17 Mar 2000 07:35:30 -0800 (PST) (envelope-from khera@kciLink.com) Received: from onceler.kcilink.com (onceler.kciLink.com [204.117.82.2]) by kci.kciLink.com (Postfix) with ESMTP id DE8F3E898 for ; Fri, 17 Mar 2000 10:35:28 -0500 (EST) Received: (from khera@localhost) by onceler.kcilink.com (8.9.3/8.9.3) id KAA21957; Fri, 17 Mar 2000 10:35:28 -0500 (EST) (envelope-from khera@kci.kcilink.com) From: Vivek Khera MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14546.20672.830493.146521@onceler.kcilink.com> Date: Fri, 17 Mar 2000 10:35:28 -0500 (EST) To: freebsd-stable@freebsd.org Subject: Re: How to force remote reboot of 3.4-Release? In-Reply-To: <200003170213.KAA26062@netrinsics.com> References: <200003170213.KAA26062@netrinsics.com> X-Mailer: VM 6.72 under 21.1 (patch 8) "Bryce Canyon" XEmacs Lucid Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG >>>>> "MR" == Michael Robinson writes: MR> possible to exploit any of the other resource starvation features in MR> 3.4-Release to force a reboot? Getting access to the server is a big MR> pain in the rear, so I'd like to avoid the trip if at all possible. BSD/OS has a feature called a deadman timer that can be used in such situations. If the timer expires, the kernel "panics" and reboots. For network-critical machines, one would have a remote process that connects and rests the timer periodically. If the remote machine cannot connect, the timer will run out and reboot. This is one feature I'd like to see merged in from the BSD/OS kernel... ;-) Not that it helps your immediate problem, sorry. But better planning by having an SSH daemon running so you can connect via that even if inetd is not responding would be a good idea. -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Vivek Khera, Ph.D. Khera Communications, Inc. Internet: khera@kciLink.com Rockville, MD +1-301-545-6996 PGP & MIME spoken here http://www.kciLink.com/home/khera/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message