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Posted to user@zookeeper.apache.org by Patrick Hunt <ph...@gmail.com> on 2010/05/09 07:43:34 UTC

Re: zookeeper-3.2.2:Cannot open channel to X at election address / Connection refused

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 <ch...@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
> 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
> 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
> 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"
>
>
>
>
>
>
> _________________________________________________________________
> Hotmail: Trusted email with powerful SPAM protection.
> https://signup.live.com/signup.aspx?id=60969
>

Re: zookeeper-3.2.2:Cannot open channel to X at election address / Connection refused

Posted by Patrick Hunt <ph...@apache.org>.
Ok, great, good luck!

Patrick

On 05/10/2010 11:20 PM, chen peng wrote:
> My question has been decided.
> *I did not <http://www.iciba.com/not/> know <http://www.iciba.com/know/> 
> "bin/zkServer start" should be execute on each machine!*
> *I took him to be very close in function with **hadoop(**start-all.sh).*
> tks!
>  > Date: Mon, 10 May 2010 23:02:48 -0700
>  > From: phunt@apache.org
>  > To: chenpeng0122@hotmail.com
>  > CC: zookeeper-user@hadoop.apache.org
>  > Subject: Re: zookeeper-3.2.2:Cannot open channel to X at election 
> address / Connection refused
>  >
>  > 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 wh at 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 sh ould 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
> &g t; > 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
>  > > <ma...@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 de fault
>  > > 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:FastLea derElection@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://19 2.168.1.3:3888>
>  > > 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"
>  > >
>  > >
>  > >
>  > >
>  > >
>  > >
>  > > _________________________________________________________________
>  > > Hotmail: Trusted email with powerful SPAM protection.
>  > > https://signup.live.com/signup.aspx?id=60969
>  > >
>  > >
>  > >
>  > > 
> ------------------------------------------------------------------------
>  > > Hotmail: Free, trusted and rich email service. Get it now.
>  > > <https://signup.live.com/signup.aspx?id=60969>
>  > > 
> ------------------------------------------------------------------------
>  > > Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. Sign up
>  > > now. <https://signup.live.com/signup.aspx?id=60969>
> *
> *
> *
> ------------------------------------------------------------------------
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> <https://signup.live.com/signup.aspx ?id=60969>*

Re: zookeeper-3.2.2:Cannot open channel to X at election address / Connection refused

Posted by Patrick Hunt <ph...@apache.org>.
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 
> <ma...@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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