One thing that could be done is to have a disk array for voicemail and all with dual controllers. Then plug that into each of two servers. Bind the IP components to a IP that is transportable between machines. When one fails ifconfig the failover machine to use that IP (could be a virtual interface).
Veritas HA works similiarly that way. Via a serial cable there are 'global atomic broadcasts' basically a ping. If the ping fails to occur the machine marked backup assumes the IP for all services of the primary. Because it has access to the same disks it can mount them and carry on like nothing happened. Veritas seperates services from the machine. If you have say a web server, mail, and SIP you would have each one on a seperate IP so that if any one single service fails that one and only that one can be moved to the backup server. With asterisk this may be overkill. MAC addresses are the only other problem. Veritas accomplishes this by MAC spoofing. Cisco PIX do as well. You might, depending on specific ethernet driver, be able to ifconfig eth0 headdr 00:00:de:ca:fb:ad. Just a thought. On Wed, 2005-04-27 at 08:33 +0100, Jason Williams wrote: > On 4/26/05, snacktime <[EMAIL PROTECTED]> wrote: > > On 4/26/05, Sean Kennedy <[EMAIL PROTECTED]> wrote: > > > Hi folks, > > > > > > I'm curious; What does everyone do for failover? I have two servers, > > > same os/compilation. I designate one the master, the other the slave, > > > and I rsync the config files once an hour and trigger a restart when > > > convenient command on the console. These two servers are setup in the > > > dns in a round robin fashion. > > > > > > What is everyone else doing? > > > > That's kind of a loaded question... Do you plan on expanding? What > > is your budget? What are your uptime requirements? Are you serving > > customers or is this just for internal use? > > > The biggest problem with that solution is voicemail it could get left > on one server and not be on the other for one hour. > > Jason > _______________________________________________ > Asterisk-Users mailing list > [email protected] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users -- Trixter http://www.0xdecafbad.com UK +44 870 340 4605 Germany +49 801 777 555 3402 US +1 360 207 0479 or +1 516 687 5200 FreeWorldDialup: 635378
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