On Sat, 2006-09-30 at 19:52 -0700, Rick Rodgers wrote: > Can anyone explain why this is so. Why is it only used on maintaining > qourum and not startup? > > > "The IP tiebreaker is typically used to *maintain* a quorum after a node > failure, because there are certain network faults in which two nodes may > see the tiebreaker - but not each other. > -- Lon" In certain situations (ex: ARP storms, switch loops, etc.), it is possible to see the IP-tiebreaker (an upstream router) but *not* your peer over the switch. If this happens to both nodes, you have a split brain. I should update the internals big to reflect the 'why'. You can change this behavior using cludb. Note that IP tiebreakers have to be in the cluster communications path - you can't use heartbeating over a private network and an IP tiebreaker on another network. -- Lon -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
