The cases where we've seen this reported in the past the user tracked
the issue down to a firewall problem, I'm not sure what the issue is
here given you've verified that's not the problem. The log is clearly
saying:
> Thread:QuorumCnxManager@336] - Cannot open channel to 2 at election
> address /192.168.1.3:3888 <http://192.168.1.3:3888>
> java.net.ConnectException: Connection refused
which means that the server is attempting to open a connection to
192.168.1.3 port 3888, but the server at that ip/port is not accepting
the connection. Are you sure that both servers are up/running at the
same time? The log that you included, this was for server 1 right
(192.168.1.2)?
You might use "netstat -a" to verify that each server is bound to the
correct ports on each host, then take a look at the logs to see if this
connection refused is still happening (it can happen in the logs if
server 1 starts but server 2 is not yet started, but then should rectify
once both servers are bound and accepting connections).
If you still have issues create a jira, attach both configs and both log
files and we'll take closer look.
https://issues.apache.org/jira/browse/ZOOKEEPER
Good Luck,
Patrick
On 05/10/2010 08:07 PM, chen peng wrote:
> *Thank <http://www.iciba.com/thank/> you <http://www.iciba.com/you/> for
> your <http://www.iciba.com/your/> kind reply,but i think port(s) works
> well, it **is not <http://www.iciba.com/not/> a problem
> <http://www.iciba.com/problem/>, **Any other
> <http://www.iciba.com/other/> suggestions?*
> PS:*In that case,i installed zookeeper-3.2.2 but hbase.*
>
> ------------------------------------------------------------------------
> From: chenpeng0122@hotmail.com
> To: phunt1@gmail.com
> Subject: RE: zookeeper-3.2.2:Cannot open channel to X at election
> address / Connection refused
> Date: Mon, 10 May 2010 14:30:55 +0000
>
> *Thank <http://www.iciba.com/thank/> you <http://www.iciba.com/you/> for
> your <http://www.iciba.com/your/> kind reply,but i think port(s) works
> well, it **is not <http://www.iciba.com/not/> a problem
> <http://www.iciba.com/problem/>, **Any other
> <http://www.iciba.com/other/> suggestions?*
> PS:*In that case,i installed zookeeper-3.2.2 but hbase.*
>
> ------------------------------------------------------------------------
> Date: Sat, 8 May 2010 22:43:34 -0700
> Subject: Re: zookeeper-3.2.2:Cannot open channel to X at election
> address / Connection refused
> From: phunt1@gmail.com
> To: zookeeper-user@hadoop.apache.org; chenpeng0122@hotmail.com
>
> Often this is related to the port(s) being blocked by a firewall.
> Perhaps you could check this (2888/3888) in both directions? Telnet can
> help:
> https://help.maximumasp.com/KB/a445/connectivity-testing-with-ping-telnet-tracert-and-pathping-.aspx
>
> Patrick
>
> 2010/5/7 chen peng <chenpeng0122@hotmail.com
> <mailto:chenpeng0122@hotmail.com>>
>
>
> Hi all
> I have a question: after installation of the zookeeper according to
> the doc for zookeeper(
> http://hadoop.apache.org/zookeeper/docs/current/zookeeperAdmin.html#sc_systemReq),
> abnormalities emerge as follows:
> ------------------------------------------------------
> JMX enabled by default
> Using
> config: /home/baeeq/hadoop-0.20.2/zookeeper-3.2.2/bin/../conf/zoo.cfg
> Starting zookeeper ...
> STARTED
> 2010-05-08 13:37:28,273 - INFO [main:QuorumPeerConfig@80] - Reading
> configuration
> from: /home/baeeq/hadoop-0.20.2/zookeeper-3.2.2/bin/../conf/zoo.cfg
> 2010-05-08 13:37:28,284 - INFO [main:QuorumPeerConfig@232] - Defaulting
> to majority quorums
> 2010-05-08 13:37:28,299 - INFO [main:QuorumPeerMain@118] - Starting
> quorum peer
> 2010-05-08 13:37:28,331 - INFO [Thread-1:QuorumCnxManager$Listener@409]
> - My election bind port: 3888
> 2010-05-08 13:37:28,342 - INFO
> [QuorumPeer:/0:0:0:0:0:0:0:0:2181:QuorumPeer@514] - LOOKING
> 2010-05-08 13:37:28,345 - INFO
> [QuorumPeer:/0:0:0:0:0:0:0:0:2181:FastLeaderElection@579] - New
> election: -1
> 2010-05-08 13:37:28,351 - WARN [WorkerSender
> Thread:QuorumCnxManager@336] - Cannot open channel to 2 at election
> address /192.168.1.3:3888 <http://192.168.1.3:3888>
> 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:323)
> at
> org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:302)
> at org.apache.zookeeper.server.quorum.FastLeaderElection
> $Messenger$WorkerSender.process(FastLeaderElection.java:323)
> at org.apache.zookeeper.server.quorum.FastLeaderElection
> $Messenger$WorkerSender.run(FastLeaderElection.java:296)
> at java.lang.Thread.run(Thread.java:619)
> 2010-05-08 13:37:28,352 - INFO
> [QuorumPeer:/0:0:0:0:0:0:0:0:2181:FastLeaderElection@618] -
> Notification: 1, -1, 1, 1, LOOKING, LOOKING, 1
> 2010-05-08 13:37:28,353 - INFO
> [QuorumPeer:/0:0:0:0:0:0:0:0:2181:FastLeaderElection@642] - Adding vote
> 2010-05-08 13:37:28,557 - WARN
> [QuorumPeer:/0:0:0:0:0:0:0:0:2181:QuorumCnxManager@336] - Cannot open
> channel to 2 at election address /192.168.1.3:3888
> <http://192.168.1.3:3888>
> 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:323)
> at
> org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:356)
> at
> org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:603)
> at
> org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:515)
> 2010-05-08 13:37:28,559 - INFO
> [QuorumPeer:/0:0:0:0:0:0:0:0:2181:FastLeaderElection@612] - Notification
> time out: 400
> 2010-05-08 13:37:28,961 - WARN
> [QuorumPeer:/0:0:0:0:0:0:0:0:2181:QuorumCnxManager@336] - Cannot open
> channel to 2 at election address /192.168.1.3:3888
> <http://192.168.1.3:3888>
> 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:323).....
> ------------------------------------------------------
> fileinfo for zoo.cfg is listed below:
> tickTime=2000
> initLimit=10
> syncLimit=5
> dataDir=/home/baeeq/hadoop-0.20.2/zookeeper-data
> clientPort=2181
> server.1=192.168.1.2:2888:3888
> server.2=192.168.1.3:2888:3888
>
> PS: It works well on the single computer after deleting
> "server.1=192.168.1.2:2888:3888 server.2=192.168.1.3:2888:3888"
>
>
>
>
>
>
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