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From "Puri, Aseem" <Aseem.P...@Honeywell.com>
Subject RE: Cannot resolve Datonode address in slave file
Date Thu, 02 Apr 2009 13:33:08 GMT
Hi Rasit,
 
Now I got a different problem when I start my Hadoop server the slave datanode do not accept
password. It gives message permission denied. 

	I have also use the commands on all m/c 

$ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

But my problem is not solved. Any suggestion?


-----Original Message-----
From: Rasit OZDAS [mailto:rasitozdas@gmail.com] 
Sent: Thursday, April 02, 2009 6:49 PM
To: core-user@hadoop.apache.org
Subject: Re: Cannot resolve Datonode address in slave file

Hi, Sim,

I've two suggessions, if you haven't done yet:

1. Check if your other hosts can ssh to master.
2. Take a look at logs of other hosts.

2009/4/2 Puri, Aseem <Aseem.Puri@honeywell.com>

>
> Hi
>
>            I have a small Hadoop cluster with 3 machines. One is my
> NameNode/JobTracker + DataNode/TaskTracker and other 2 are
> DataNode/TaskTracker. So I have made all 3 as slave.
>
>
>
> In slave file I have put names of all there machines as:
>
>
>
> master
>
> slave
>
> slave1
>
>
>
> When I start Hadoop cluster it always start DataNode/TaskTracker on last
> slave in the list and do not start DataNode/TaskTracker on other two
> machines. Also I got the message as:
>
>
>
> slave1:
>
> : no address associated with name
>
> : no address associated with name
>
> slave1: starting datanode, logging to
> /home/HadoopAdmin/hadoop/bin/../logs/hadoo
>
> p-HadoopAdmin-datanode-ie11dtxpficbfise.out
>
>
>
> If I change the order in slave file like this:
>
>
>
> slave
>
> slave1
>
> master
>
>
>
> then DataNode/TaskTracker on master m/c starts and not on other two.
>
>
>
> Please tell how I should solve this problem.
>
>
>
> Sim
>
>


-- 
M. Raşit ÖZDAŞ

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