From owner-freebsd-cluster Tue Jun 18 10:28:21 2002 Delivered-To: freebsd-cluster@freebsd.org Received: from mg.hk5.outblaze.com (202-77-181-23.outblaze.com [202.77.181.23]) by hub.freebsd.org (Postfix) with ESMTP id 3A95E37B404 for ; Tue, 18 Jun 2002 10:28:15 -0700 (PDT) Received: from ws2.hk5.outblaze.com (202-77-181-84.outblaze.com [202.77.181.84]) by mg.hk5.outblaze.com (8.11.2/8.11.2) with SMTP id g5IHS8v16829 for ; Tue, 18 Jun 2002 17:28:08 GMT Received: (qmail 25914 invoked by uid 1001); 18 Jun 2002 17:28:08 -0000 Message-ID: <20020618172808.25913.qmail@graffiti.net> Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 7bit Mime-Version: 1.0 X-Mailer: MIME-tools 4.104 (Entity 4.117) Received: from [66.51.217.108] by ws2.hk5.outblaze.com with http for derekbarrett@graffiti.net; Wed, 19 Jun 2002 01:28:07 +0800 From: "Derek Barrett" To: , Date: Wed, 19 Jun 2002 01:28:07 +0800 Subject: Re: Application cluster X-Originating-Ip: 66.51.217.108 X-Originating-Server: ws2.hk5.outblaze.com Sender: owner-freebsd-cluster@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG hahahahaha well as a fellow American then I should have replied, "Thanks partner! USA!" I don't think you should dismiss your scripts that "only start and stop" as being laughable. To me, that's 75% of the battle. I know I've spent hours at times just getting my startup scripts to work properly, missing a switch here or there, the trial and error involved in that is alot sometimes. And getting a RELIABLE method of monitoring the other servers has still been a challenge for everyone. Truly, getting a failover server to successfully take over means: 1) Reduced late night phone calls 2) Not having to make as many late night phone calls :-D And most of these types of scripts depend on having a second network card and a serial cable as well. The Linux HA servers even have a controlling server for the entire cluster called a Director. That your mechanism goes across a network card is nice, the less overhead, the better. I mean, a couple thousand dollar hardware failover solution is nice, but so would a Ferrari as a company car. I recently worked in a high uptime enviornment, and every single server there had an identical backup, run by a hardware failover switch, and let me tell you, I got really SPOILED. The amount of stress relief that those failover switches provided made troubleshooting and maintenance a breeze. Let me see what I can come up with for a place for you to post your file. Derek ----- Original Message ----- From: Andy Sporner Date: Tue, 18 Jun 2002 10:02:13 +0200 To: Derek Barrett , freebsd-cluster Subject: Re: Application cluster > Hi Derek, > > > > >I would also love to take a look at this failover script. > > > It's a daemon and some scripts. > > > > > > >What types of apps have you used this on so far? > > > You will laugh, but simple scripts that say "I am starting, I am stopping" > because I never had enough time to get out of the test phase > > > > >Do you use a serial cable for the heartbeat monitor mechanism? > > > Actually not. It uses network interfaces to send heartbeats. I had up to > 6 machines running once (different architectures IE: Sparc, VAX, and I386). > But lately I have been only working with two and three machines (all I-386). > In the early days it was multi platform (people who used linux was also > using it--which was a surprise because I never thought it was that > portable). > These days I am focusing on FreeBSD only--again because of time--but > mostly also because I am starting to use some system specific stuff as it > becomes more elaborate. > > > > >Danke, > > > Thanks for this, but I am an American working in Germany. ;-) > I do fool a lot of people though because I have pick up an accent. > > PS. Do you know a place where I can put the 'tar' file so that > people can get to it? My main website is down for about the > next two weeks. > > Andy > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-cluster" in the body of the message > > -- _______________________________________________ Get your free email from http://www.graffiti.net Powered by Outblaze To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-cluster" in the body of the message