From owner-freebsd-questions Wed Sep 10 19:55:52 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id TAA18642 for questions-outgoing; Wed, 10 Sep 1997 19:55:52 -0700 (PDT) Received: from gdi.uoregon.edu (cisco-ts14-line11.uoregon.edu [128.223.150.177]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id TAA18637 for ; Wed, 10 Sep 1997 19:55:47 -0700 (PDT) Received: from localhost (dwhite@localhost) by gdi.uoregon.edu (8.8.5/8.8.5) with SMTP id TAA15412; Wed, 10 Sep 1997 19:55:33 -0700 (PDT) Date: Wed, 10 Sep 1997 19:55:32 -0700 (PDT) From: Doug White X-Sender: dwhite@localhost Reply-To: Doug White To: Robert Strickler cc: "'freebsd-questions@freebsd.org'" Subject: Re: Clustering/fail-over capability? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Wed, 10 Sep 1997, Robert Strickler wrote: > Is there anything built-in to FreeBSD similar to allow us to set up an > identical secondary server and when the primary server stops > communicating, have it take over (with the failed servers IP addresses) > and try and shutdown the primary server? That's pretty complex functionality for lowly PCs :) To be honest, no, there's no specific functionality built into the core system to do this nicely and cleanly. However, doing automatic takeover isn't done nicely and cleanly. You have to define what is meant by `stops communicating', and how to remotely shut down a machine without creating a gigantic security hole in the process. (If you can do this securely, the UPS people want to talk to you.) Mirroring disks is pretty easy to do, the built-in disk striping driver (ccd) does this already. But the rest is pretty tricky. You might consider contacting hackers@freebsd.org and/or searching the mail archives for past discussion on this topic. Good luck! Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major Spam routed to /dev/null by Procmail | Death to Cyberpromo