Hi Thank you for your answer. Indeed, I would like to use a quorum of instances.
In this case: 1 - should I start ZK on each one of the servers? 2 - Starting ZK is done via zkServer.sh or via the command line java -cp zookeeper.jar:lib/slf4j-api-1. 6.1.jar:lib/ slf4j-log4j12-1.6.1.jar:lib/log4j-1.2.15.jar:conf \ org.apache.zookeeper.server.quorum.QuorumPeerMain zoo.cfg Thanks again! On Thu, Sep 12, 2013 at 2:40 PM, Rakesh R <[email protected]> wrote: > Hi Sznajder, > > >> 1 - In case of distributed env of ZK, should I start ZK on each one of > the servers? Or only in the master? > > It all depends on the tolerated failures in the system and if ZK server > goes down, what would be the impact on your application. In case of Single > node ZooKeeper server, it will be the Single Point of Contact. > > The advantage of having ZooKeeper quorum of instances is, your system will > be able to run even if few ZooKeeper server fails. > > Please see more about ZooKeeper quorum at: > > > http://zookeeper.apache.org/doc/trunk/zookeeperStarted.html#sc_RunningReplicatedZooKeeper > > > > >>>>>2 - Is it OK to start the server via "bin/zkServer.sh start " or > should I use the long command line: > java -cp zookeeper.jar:lib/slf4j-api-1.6.1.jar:lib/ > slf4j-log4j12-1.6.1.jar:lib/log4j-1.2.15.jar:conf \ > org.apache.zookeeper.server.quorum.QuorumPeerMain zoo.cfg > > I'll suggest to use the script bin/zkServer.sh start and this is pretty > simple. > > Please see this section, it will be helpful to setup single node. > > > http://zookeeper.apache.org/doc/trunk/zookeeperStarted.html#sc_InstallingSingleMode > > -Rakesh > > -----Original Message----- > From: Sznajder ForMailingList [mailto:[email protected]] > Sent: 12 September 2013 16:01 > To: [email protected] > Subject: Starting a distributed env of ZK > > Hi > > Two questions: > > 1 - In case of distributed env of ZK, should I start ZK on each one of > the servers? Or only in the master? > > 2 - Is it OK to start the server via "bin/zkServer.sh start " or should I > use the long command line: > java -cp zookeeper.jar:lib/slf4j-api-1.6.1.jar:lib/ > slf4j-log4j12-1.6.1.jar:lib/log4j-1.2.15.jar:conf \ > org.apache.zookeeper.server.quorum.QuorumPeerMain zoo.cfg > > > > Thanks! >
