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From Mahadev Konar <maha...@yahoo-inc.com>
Subject Re: Start problem of "Running Replicated ZooKeeper"
Date Wed, 23 Sep 2009 14:57:02 GMT
Hi Le,
 Is there some chance of the these servers not being able to talk to each
other?  IS the zookeeper prcoess running on debian-1? What error do you see
on debian-1? 

The connection refused error suggests that debian-0 is not able to talk to
debian-1 machine. 

Thanks
mahadev


On 9/23/09 2:41 AM, "Le Zhou" <lezhouyang@gmail.com> wrote:

> Hi,
> I'm trying to install HBase 0.20.0 in fully distributed mode on my cluster.
> As HBase depends on Zookeeper, I have to know first how to make Zookeeper
> work.
> I download the release 3.2.1 and install it on each machine in my cluster.
> 
> Zookeeper in standalone mode works well on each machine in my cluster. I
> follow the "Zookeeper Getting Started Guide" and get expected output. Then I
> come to the "Running replicated zookeeper"
> 
> On each machine in my cluster(debian-0, debian-1, debian-5), I append the
> following lines to zoo.cfg, and create in dataDir a "myid" which contains
> the server id(1 for debian-0, 2 for debian-1, 3 for debian-5).
> 
> server.1=debian-0:2888:3888
> server.2=debian-1:2888:3888
> server.3=debian-5:2888:3888
> 
> then I start zookeeper server by "running bin/zkServer.sh start", and I got
> the following output:
> 
> cloud@debian-0:~/zookeeper$ bin/zkServer.sh start
> JMX enabled by default
> Using config: /home/cloud/zookeeper-3.2.1/bin/../conf/zoo.cfg
> Starting zookeeper ...
> STARTED
> cloud@debian-0:~/zookeeper$ 2009-09-23 15:30:27,976 - INFO
>  [main:QuorumPeerConfig@80] - Reading configuration from:
> /home/cloud/zookeeper-3.2.1/bin/../conf/zoo.cfg
> 2009-09-23 15:30:27,981 - INFO  [main:QuorumPeerConfig@232] - Defaulting to
> majority quorums
> 2009-09-23 15:30:28,009 - INFO  [main:QuorumPeerMain@118] - Starting quorum
> peer
> 2009-09-23 15:30:28,034 - INFO  [Thread-1:QuorumCnxManager$Listener@409] -
> My election bind port: 3888
> 2009-09-23 15:30:28,045 - INFO
>  [QuorumPeer:/0:0:0:0:0:0:0:0:2181:QuorumPeer@487] - LOOKING
> 2009-09-23 15:30:28,070 - INFO
>  [QuorumPeer:/0:0:0:0:0:0:0:0:2181:FastLeaderElection@579] - New election:
> -1
> 2009-09-23 15:30:28,075 - INFO
>  [QuorumPeer:/0:0:0:0:0:0:0:0:2181:FastLeaderElection@618] - Notification:
> 1, -1, 1, 1, LOOKING, LOOKING, 1
> 2009-09-23 15:30:28,075 - WARN  [WorkerSender Thread:QuorumCnxManager@336] -
> Cannot open channel to 2 at election address debian-1/172.20.53.86:3888
> java.net.ConnectException: Connection refused
> at sun.nio.ch.Net.connect(Native Method)
> at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:507)
> at java.nio.channels.SocketChannel.open(SocketChannel.java:146)
> at
> org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManage
> r.java:323)
> at
> org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.ja
> va:302)
> at
> org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.p
> rocess(FastLeaderElection.java:323)
> at
> org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.r
> un(FastLeaderElection.java:296)
> at java.lang.Thread.run(Thread.java:619)
> 2009-09-23 15:30:28,085 - INFO
>  [QuorumPeer:/0:0:0:0:0:0:0:0:2181:FastLeaderElection@642] - Adding vote
> 2009-09-23 15:30:28,099 - WARN  [WorkerSender Thread:QuorumCnxManager@336] -
> Cannot open channel to 3 at election address debian-5/172.20.14.194:3888
> java.net.ConnectException: Connection refused
> at sun.nio.ch.Net.connect(Native Method)
> at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:507)
> at java.nio.channels.SocketChannel.open(SocketChannel.java:146)
> at
> org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManage
> r.java:323)
> at
> org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.ja
> va:302)
> at
> org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.p
> rocess(FastLeaderElection.java:323)
> at
> org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.r
> un(FastLeaderElection.java:296)
> at java.lang.Thread.run(Thread.java:619)
> 2009-09-23 15:30:28,288 - WARN
>  [QuorumPeer:/0:0:0:0:0:0:0:0:2181:QuorumCnxManager@336] - Cannot open
> channel to 2 at election address debian-1/172.20.53.86:3888
> 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(QuorumCnxManage
> r.java:323)
> at
> org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManage
> r.java:356)
> at
> org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeader
> Election.java:603)
> at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:488)
> 
> Terminal keeps on outputing the WARN info until I stop the zookeeper Server.
> 
> I googled "zookeeper cannot open channel to at address" and searched in
> mailing list archives, but got nothing helpful.
> 
> I need your help, thanks and best regards!


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