Hi Norman - >> To add to what Edgar said, yes, use linux-ha. It works nicely in >> combination with DRBD. DRBD uses a dedicated network interface on >> each box with a crossover cable between the two. It does a block >> level copy of the entire filesystem, so you have two machines that are >> identical. The you use the linux-ha heartbeat to monitor the OS and >> asterisk. If anything goes wrong, it can fail over to the second >> machine. >> >> This is pretty easy to set up with Analog lines. With PRI's you'd >> need the fonebridge or the FSV-4PFS from http://www.failsafevoip.com > > Thanks, I wasn't aware of the FSV-4PFS box. Can one switch it remotely (e.g. > over the network?)
>From what I understand, it has its own heartbeat-type monitoring of asterisk. If asterisk fails, it will automatically fail the PRI over to your backup machine. Can you manually force the failover? I think so, but I'm not positive. You can ask the failsafevoip people directly. I've exchanged emails with them before and they are knowledgeable and responsive. > It would be nice to have a way to gracefully switch boxes, e.g. all new > calls to the backup box, wait until all calls on the primary normally end, > and then take server down for an upgrade. If you're using heartbeat, and it's directly monitoring the asterisk process, you should be able to issue a "stop gracefully" command. That will bring asterisk down when all the calls are complete. Then, heartbeat should fail over to the other machine. Of course, if someone is on a long call and you've already issued a "stop gracefully" command, your "asterisk cluster" won't accept any new calls until that long call is finished. - Noah _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
