Mac OSX ssh localhost passwordless

This is for setup of Hadoop Pseudo-Distributed mode script run

Unfortunately, this does not work in Mac OSX, We should use RSA for security reasons.

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

ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

Try localhost access

ssh localhost

You can login with shell without password for Mac (Mac login is still alive)