David, For your second point, take a look at https://issues.apache.org/jira/browse/ZOOKEEPER-107. Unfortunately, Zookeeper does not support this feature yet.
~Jared On Mon, Dec 6, 2010 at 10:43 AM, David Alves <[email protected]> wrote: > Hi > > I'm a recent user of zookeeper (awesome work btw) and although I've > (most of) the wiki and already have some running code I still have some > questions. > 1- Feasibility of a two node cluster: > Q- I know zookeeper runs over (a approx. version of) paxos > and tolerates f failures in 2f+1 nodes but would it be possible to use in a > 2 server + 1 quorum disk deployment (much like windows clusters do)? The > objective would be to use ZK both for distributed (processing nodes >2) and > single processing node (2 nodes active-passive) highly available > deployments. > 2- Meta-ZK cluster group membership/management. > Zk already provides a group membership construct by allowing > to register/unregister ephemeral nodes and by deleting them on failed > sessions, but would it be possible to do so for the actual zookeeper > ensemble? For instance I'd like to make nodes add themselves to the ZK > ensemble based on its size (for instance keep adding nodes based if ensemble > size < 5) and if a node that is part of the ensemble fails then a new node > would take its place. Is this possible? > > Regards > David > > > >
