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Posted to users@kafka.apache.org by Victor L <vl...@gmail.com> on 2015/02/27 09:53:36 UTC
zookeeper connection failure
I seem to unable to connect single instance of Kafka server to single
instance of local zookeeper server on local host (Ubuntu 14.04LTS/ open jdk
1.7.0_75):
[2015-02-27 08:10:11,467] INFO Initiating client connection,
connectString=localhost:2181 sessionTimeout=6000
watcher=org.I0Itec.zkclient.ZkClient@5513425f
(org.apache.zookeeper.ZooKeeper)
[2015-02-27 08:10:11,502] INFO Opening socket connection to server
localhost/127.0.0.1:2181 (org.apache.zookeeper.ClientCnxn)
[2015-02-27 08:10:11,506] WARN Session 0x0 for server null, unexpected
error, closing socket connection and attempting reconnect
(org.apache.zookeeper.ClientCnxn)
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1146)
One thread describes ipv6 as possible cause for this problem:
https://gist.github.com/akiatoji/f1a5ca319325788cf287
so, i disabled ipv6, but no luck. It must be the common problem, Is there
some FAQ i've missed? How can i troubleshoot it?
Re: zookeeper connection failure
Posted by Victor L <vl...@gmail.com>.
I eventually figured it out: my zkClient was running on vm/guest os with
zookeeper on host and vm/host port mapping was broken...
On Fri, Feb 27, 2015 at 1:17 PM, Jiangjie Qin <jq...@linkedin.com.invalid>
wrote:
> Do you mean you were not able to connect to zookeeper after retry?
> We see this error in the log from time to time, but the zkClient will
> retry and usually it will succeed. Can you verify if you were finally be
> able to connect or not?
>
> Jiangjie (Becket) Qin
>
> On 2/27/15, 12:53 AM, "Victor L" <vl...@gmail.com> wrote:
>
> >I seem to unable to connect single instance of Kafka server to single
> >instance of local zookeeper server on local host (Ubuntu 14.04LTS/ open
> >jdk
> >1.7.0_75):
> >
> >[2015-02-27 08:10:11,467] INFO Initiating client connection,
> >connectString=localhost:2181 sessionTimeout=6000
> >watcher=org.I0Itec.zkclient.ZkClient@5513425f
> >(org.apache.zookeeper.ZooKeeper)
> >[2015-02-27 08:10:11,502] INFO Opening socket connection to server
> >localhost/127.0.0.1:2181 (org.apache.zookeeper.ClientCnxn)
> >[2015-02-27 08:10:11,506] WARN Session 0x0 for server null, unexpected
> >error, closing socket connection and attempting reconnect
> >(org.apache.zookeeper.ClientCnxn)
> >java.net.ConnectException: Connection refused
> > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > at
> >sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
> > at
> >org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1146)
> >
> >One thread describes ipv6 as possible cause for this problem:
> >https://gist.github.com/akiatoji/f1a5ca319325788cf287
> >so, i disabled ipv6, but no luck. It must be the common problem, Is there
> >some FAQ i've missed? How can i troubleshoot it?
>
>
Re: zookeeper connection failure
Posted by Jiangjie Qin <jq...@linkedin.com.INVALID>.
Do you mean you were not able to connect to zookeeper after retry?
We see this error in the log from time to time, but the zkClient will
retry and usually it will succeed. Can you verify if you were finally be
able to connect or not?
Jiangjie (Becket) Qin
On 2/27/15, 12:53 AM, "Victor L" <vl...@gmail.com> wrote:
>I seem to unable to connect single instance of Kafka server to single
>instance of local zookeeper server on local host (Ubuntu 14.04LTS/ open
>jdk
>1.7.0_75):
>
>[2015-02-27 08:10:11,467] INFO Initiating client connection,
>connectString=localhost:2181 sessionTimeout=6000
>watcher=org.I0Itec.zkclient.ZkClient@5513425f
>(org.apache.zookeeper.ZooKeeper)
>[2015-02-27 08:10:11,502] INFO Opening socket connection to server
>localhost/127.0.0.1:2181 (org.apache.zookeeper.ClientCnxn)
>[2015-02-27 08:10:11,506] WARN Session 0x0 for server null, unexpected
>error, closing socket connection and attempting reconnect
>(org.apache.zookeeper.ClientCnxn)
>java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
>sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
> at
>org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1146)
>
>One thread describes ipv6 as possible cause for this problem:
>https://gist.github.com/akiatoji/f1a5ca319325788cf287
>so, i disabled ipv6, but no luck. It must be the common problem, Is there
>some FAQ i've missed? How can i troubleshoot it?