Hi Brian, Currently you cannot convert an observer to a participant without modifying zoo.cfg and restarting all the servers. With dynamic reconfiguration (new in 3.5), you can convert an observer to a participant without needing to restart the entire cluster.
I think by far the most common way to tolerate 2 node failure is to deploy a cluster with 5 or more nodes. On Thu, Sep 12, 2013 at 5:16 AM, Brian Tarbox <[email protected]> wrote: > We have a 3 node cluster which as I understand it means we can survive the > failure of a single node. We have a 4th machine available and I'm > wondering if I can run zk as an observer on that node and have it take over > in the case of the failure of one of the regular nodes? > > If that doesn't make sense can anyone answer the more general question of > how to deal with multiple node failure? > > Thanks, > > Brian Tarbox > > -- > http://about.me/BrianTarbox
