Not able to set up zookeeper in replicated mode - apache-zookeeper

Question

I am trying to set up zookeeper in replicated node with 3 server.
my config file is like this
tickTime=2000
dataDir=/var/lib/zookeeper/
clientPort=2181
initLimit=5
syncLimit=2
server.1=zoo1:2888:3888
server.2=zoo2:2888:3888
server.3=zoo3:2888:3888
I am getting following exception
QuorumPeer:/0:0:0:0:0:0:0:0:2181:FastLeaderElection#642] - Adding vote
2009-09-23 15:30:28,099 - WARN [WorkerSender Thread:QuorumCnxManager#336] -
Cannot open channel to 3 at election address zoo1/172.21.31.159:3888
java.net.ConnectException: Connection refused at sun.nio.ch.Net.connect(Native Method)> at
sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:507)
at java.nio.channels.SocketChannel.open(SocketChannel.java:146)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:
All ports are open and ssh, telnet are also working.
Thanks

Answer 1

Here is a quick checklist:
Do you have a /var/lib/zookeeper/myid file?
Are ids defined in that file in sync with machine names/IPs defined in config (zoo1 having id 1, etc...)?

Answer 2

Not sure why but I had to use 0.0.0.0 as a host name in Zookeeper config for a each of the servers.
I.e:
Server 1:
myid
1
zoo.cfg
server.1=0.0.0.0:2888:3888
server.2=X.X.X.2:2888:3888
server.3=X.X.X.3:2888:3888
Server 2:
myid
2
zoo.cfg
server.1=X.X.X.1:2888:3888
server.2=0.0.0.0:2888:3888
server.3=X.X.X.3:2888:3888
Server 3:
myid
3
zoo.cfg
server.1=X.X.X.1:2888:3888
server.2=X.X.X.2:2888:3888
server.3=0.0.0.0:2888:3888