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Posted to common-dev@hadoop.apache.org by arun kumar <ar...@yahoo.com> on 2009/09/15 00:03:33 UTC
Slaves are not able to connect to master
All,
I am trying to setup a cluster with 4 nodes and I followed all the steps listed here: http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_(Multi-Node_Cluster) except the /etc/hosts step. But for some reason the number of datanodes is just one (which I am assuming is the master node) and when I checked the logs on the datanode, I am getting this message: " Retrying connect to server: node22/128.226.118.98:54310. Already tried 9 time(s).
2009-09-14 17:31:50,934 INFO org.apache.hadoop.ipc.RPC: Server at node22/128.226.118.98:54310 not available yet, Zzzzz...". I am not able to proceed from here, any help on finding the leads is appreciated.
Thanks,
Arun
Re: Slaves are not able to connect to master
Posted by arun kumar <ar...@yahoo.com>.
Thanks!! That worked.
Arun
--- On Tue, 9/15/09, Chandraprakash Bhagtani <cp...@gmail.com> wrote:
From: Chandraprakash Bhagtani <cp...@gmail.com>
Subject: Re: Slaves are not able to connect to master
To: common-dev@hadoop.apache.org
Date: Tuesday, September 15, 2009, 7:35 PM
you can try replacing names with IP address in hadoop conf files and slaves
file as well.
--
Thanks & Regards,
Chandra Prakash Bhagtani
On Tue, Sep 15, 2009 at 7:15 PM, arun kumar <ar...@yahoo.com>wrote:
> Hi Chandraprakash,
>
> Yes node22 is 128.226.118.98. I have not entered a corresponding entry, in
> any of the machines,on /etc/hosts (right now, I don't have the access
> privileges to do that, hoping to get that soon). I am able to ssh from
> node22 (the master) to nodes 20,21 and 23 (the slaves) without a password
> and also from the slaves to the master.
>
> Thanks for your help,
> Arun
>
> --- On Tue, 9/15/09, Chandraprakash Bhagtani <cp...@gmail.com> wrote:
>
> From: Chandraprakash Bhagtani <cp...@gmail.com>
> Subject: Re: Slaves are not able to connect to master
> To: common-dev@hadoop.apache.org
> Date: Tuesday, September 15, 2009, 2:27 PM
>
> Hi Arun,
>
> Which is node22? is it 128.226.118.98 <http://128.226.118.98:54310/>? have
> u
> named 128.226.118.98 <http://128.226.118.98:54310/> as node22 in
> /etc/hosts?
> are you able to ssh 128.226.118.98 <http://128.226.118.98:54310/> from
> your
> datanodes without password?
>
> --
> Thanks & Regards,
> Chandra Prakash Bhagtani
>
> On Tue, Sep 15, 2009 at 3:33 AM, arun kumar <arunkumar_skcet@yahoo.com
> >wrote:
>
> > All,
> >
> > I am trying to setup a cluster with 4 nodes and I followed all the steps
> > listed here:
> >
> http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_(Multi-Node_Cluster)<http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Multi-Node_Cluster%29>
> <
> http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Multi-Node_Cluster%29>except
> the /etc/hosts step. But for some reason the number of datanodes is
> > just one (which I am assuming is the master node) and when I checked the
> > logs on the datanode, I am getting this message: " Retrying connect to
> > server: node22/128.226.118.98:54310. Already tried 9 time(s).
> > 2009-09-14 17:31:50,934 INFO org.apache.hadoop.ipc.RPC: Server at node22/
> > 128.226.118.98:54310 not available yet, Zzzzz...". I am not able to
> > proceed from here, any help on finding the leads is appreciated.
> >
> > Thanks,
> > Arun
> >
> >
> >
> >
>
>
>
>
>
--
Thanks & Regards,
Chandra Prakash Bhagtani,
Re: Slaves are not able to connect to master
Posted by Chandraprakash Bhagtani <cp...@gmail.com>.
you can try replacing names with IP address in hadoop conf files and slaves
file as well.
--
Thanks & Regards,
Chandra Prakash Bhagtani
On Tue, Sep 15, 2009 at 7:15 PM, arun kumar <ar...@yahoo.com>wrote:
> Hi Chandraprakash,
>
> Yes node22 is 128.226.118.98. I have not entered a corresponding entry, in
> any of the machines,on /etc/hosts (right now, I don't have the access
> privileges to do that, hoping to get that soon). I am able to ssh from
> node22 (the master) to nodes 20,21 and 23 (the slaves) without a password
> and also from the slaves to the master.
>
> Thanks for your help,
> Arun
>
> --- On Tue, 9/15/09, Chandraprakash Bhagtani <cp...@gmail.com> wrote:
>
> From: Chandraprakash Bhagtani <cp...@gmail.com>
> Subject: Re: Slaves are not able to connect to master
> To: common-dev@hadoop.apache.org
> Date: Tuesday, September 15, 2009, 2:27 PM
>
> Hi Arun,
>
> Which is node22? is it 128.226.118.98 <http://128.226.118.98:54310/>? have
> u
> named 128.226.118.98 <http://128.226.118.98:54310/> as node22 in
> /etc/hosts?
> are you able to ssh 128.226.118.98 <http://128.226.118.98:54310/> from
> your
> datanodes without password?
>
> --
> Thanks & Regards,
> Chandra Prakash Bhagtani
>
> On Tue, Sep 15, 2009 at 3:33 AM, arun kumar <arunkumar_skcet@yahoo.com
> >wrote:
>
> > All,
> >
> > I am trying to setup a cluster with 4 nodes and I followed all the steps
> > listed here:
> >
> http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_(Multi-Node_Cluster)<http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Multi-Node_Cluster%29>
> <
> http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Multi-Node_Cluster%29>except
> the /etc/hosts step. But for some reason the number of datanodes is
> > just one (which I am assuming is the master node) and when I checked the
> > logs on the datanode, I am getting this message: " Retrying connect to
> > server: node22/128.226.118.98:54310. Already tried 9 time(s).
> > 2009-09-14 17:31:50,934 INFO org.apache.hadoop.ipc.RPC: Server at node22/
> > 128.226.118.98:54310 not available yet, Zzzzz...". I am not able to
> > proceed from here, any help on finding the leads is appreciated.
> >
> > Thanks,
> > Arun
> >
> >
> >
> >
>
>
>
>
>
--
Thanks & Regards,
Chandra Prakash Bhagtani,
Re: Slaves are not able to connect to master
Posted by arun kumar <ar...@yahoo.com>.
Hi Chandraprakash,
Yes node22 is 128.226.118.98. I have not entered a corresponding entry, in any of the machines,on /etc/hosts (right now, I don't have the access privileges to do that, hoping to get that soon). I am able to ssh from node22 (the master) to nodes 20,21 and 23 (the slaves) without a password and also from the slaves to the master.
Thanks for your help,
Arun
--- On Tue, 9/15/09, Chandraprakash Bhagtani <cp...@gmail.com> wrote:
From: Chandraprakash Bhagtani <cp...@gmail.com>
Subject: Re: Slaves are not able to connect to master
To: common-dev@hadoop.apache.org
Date: Tuesday, September 15, 2009, 2:27 PM
Hi Arun,
Which is node22? is it 128.226.118.98 <http://128.226.118.98:54310/>? have u
named 128.226.118.98 <http://128.226.118.98:54310/> as node22 in /etc/hosts?
are you able to ssh 128.226.118.98 <http://128.226.118.98:54310/> from your
datanodes without password?
--
Thanks & Regards,
Chandra Prakash Bhagtani
On Tue, Sep 15, 2009 at 3:33 AM, arun kumar <ar...@yahoo.com>wrote:
> All,
>
> I am trying to setup a cluster with 4 nodes and I followed all the steps
> listed here:
> http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_(Multi-Node_Cluster)<http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Multi-Node_Cluster%29>except the /etc/hosts step. But for some reason the number of datanodes is
> just one (which I am assuming is the master node) and when I checked the
> logs on the datanode, I am getting this message: " Retrying connect to
> server: node22/128.226.118.98:54310. Already tried 9 time(s).
> 2009-09-14 17:31:50,934 INFO org.apache.hadoop.ipc.RPC: Server at node22/
> 128.226.118.98:54310 not available yet, Zzzzz...". I am not able to
> proceed from here, any help on finding the leads is appreciated.
>
> Thanks,
> Arun
>
>
>
>
Re: Slaves are not able to connect to master
Posted by Chandraprakash Bhagtani <cp...@gmail.com>.
Hi Arun,
Which is node22? is it 128.226.118.98 <http://128.226.118.98:54310/>? have u
named 128.226.118.98 <http://128.226.118.98:54310/> as node22 in /etc/hosts?
are you able to ssh 128.226.118.98 <http://128.226.118.98:54310/> from your
datanodes without password?
--
Thanks & Regards,
Chandra Prakash Bhagtani
On Tue, Sep 15, 2009 at 3:33 AM, arun kumar <ar...@yahoo.com>wrote:
> All,
>
> I am trying to setup a cluster with 4 nodes and I followed all the steps
> listed here:
> http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_(Multi-Node_Cluster)<http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Multi-Node_Cluster%29>except the /etc/hosts step. But for some reason the number of datanodes is
> just one (which I am assuming is the master node) and when I checked the
> logs on the datanode, I am getting this message: " Retrying connect to
> server: node22/128.226.118.98:54310. Already tried 9 time(s).
> 2009-09-14 17:31:50,934 INFO org.apache.hadoop.ipc.RPC: Server at node22/
> 128.226.118.98:54310 not available yet, Zzzzz...". I am not able to
> proceed from here, any help on finding the leads is appreciated.
>
> Thanks,
> Arun
>
>
>
>