Configuring the user

hduser's .bashrc must contain these lines
export HADOOP_BASE=/usr/local/hadoop-1.0.3
export PATH=$HADOOP_BASE/bin:$PATH
unalias fs &> /dev/null
alias fs="hadoop fs"
unalias hls &> /dev/null
alias hls="fs -ls"

Setup ssh keys for automatic login
ssh-keygen -t ecdsa -N ''
cat .ssh/id_ecdsa.pub >> .ssh/authorized_keys
ssh localhost

Now we have some basic convenient aliases

And Hadoop can run jobs over ssh without any keyboard input