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From John Martyniak <j...@avum.com>
Subject Re: Multiple NIC Cards
Date Tue, 09 Jun 2009 13:40:59 GMT
My original names where huey-direct and duey-direct, both names in  
the /etc/hosts file on both machines.

Are nn.internal and jt.interal special names?


On Jun 9, 2009, at 9:26 AM, Steve Loughran wrote:

> John Martyniak wrote:
>> David,
>> For the Option #1.
>> I just changed the names to the IP Addresses, and it still comes up  
>> as the external name and ip address in the log files, and on the  
>> job tracker screen.
>> So option 1 is a no go.
>> When I change the "dfs.datanode.dns.interface" values it doesn't  
>> seem to do anything.  When I was search archived mail, this seemed  
>> to be a the approach to change the NIC card being used for  
>> resolution.  But when I change it nothing happens, I even put in  
>> bogus values and still no issues.
>> -John
> I've been having similar but different fun with Hadoop-on-VMs,  
> there's a lot of assumption that DNS and rDNS all works consistently  
> in the code. Do you have separate internal and external hostnames?  
> In which case, can you bring up the job tracker as jt.internal ,  
> namenode as nn.internal (so the full HDFS URl is something like  
> hdfs://nn.internal/ ) , etc, etc.?

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