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From "kate rhodes" <masuk...@gmail.com>
Subject Re: Configuration problem (cannot connect to master node)
Date Wed, 26 Sep 2007 21:06:36 GMT
Well, assuming you've got the IP address correct in the second machine
is there a firewall blocking you?

Pinging isn't really an indication of being able to connect at all.

Telnet from machine B to machine A on the appropriate port.

also, I seem to remember weirdness in some systems (not specifically
hadoop) with binding to localhost and then having remote boxes connect
to you. Replace the 148 config with the same one you're using on 131.

- kate = masukomi

On 9/26/07, Ming Yang <minghsien@gmail.com> wrote:
> Hi,
> I am having problem configuring my 2-node Hadoop cluster.
> The two machines, named A and B, are in the same network,
> having IP address of and, respectively.
> Machine A was configured as a master, and machine B was a slave.
> When I started a job on machine B, I got a lot of the following
> connection error
> 07/09/26 16:13:37 INFO ipc.Client: Retrying connect to server:
> / Already tried 1 time(s).
> I can ping machine A from machine without problem. So not sure if
> there's anything else I should put in the configuration.
> Please take a look at the attached configuration files from each machine.
> the file names are suffixed with the IP. I really appreciate your help!
> Ming Yang

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