How do I add a node to a pseudo-distributed hadoop setup?

I've a single-node pseudo-distributed hadoop setup on a unix system in the network. What are the minimum steps to开发者_运维百科 add another computer/node (cygwin) on the network to form a hadoop cluster setup?

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Instructions for Hadoop a single node cluster.

http://www.michael-noll.com/blog/2007/08/05/running-hadoop-on-ubuntu/

Instructions for Hadoop a multi node cluster.

http://www.michael-noll.com/blog/2007/08/09/running-hadoop-on-ubuntu-part-2-multi-node-cluster/

The author Michael makes installation and configuration very easy and had been keeping the instructions up to date.