ssh - Password less login

SSH Localhost

SETP I: 

Nothing needs to be done here if you have already generated ssh keys. To verify just check for the existance of ~/.ssh/id_rsa and the ~/.ssh/id_rsa.pub files. If not the keys can be generated using

$ ssh-keygen -t rsa

Enable Remote Login
“System Preferences” -> “Sharing”. Check “Remote Login”
Authorize SSH Keys
To allow your system to accept login, we have to make it aware of the keys that will be used

$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

Reference  - https://amodernstory.com/2014/09/23/installing-hadoop-on-mac-osx-yosemite/

SETP II:

down vote

you need to set file permissions right , try this .. $chmod go-w ~/ $chmod 700 ~/.ssh $chmod 600 ~/.ssh/authorized_keys

Reference  - http://askubuntu.com/questions/37051/ssh-connection-permission-denied-message

Usage - 

$chmod 700 File1

$chmod 070 File2

$chmod 007 File3

$chmod 510 File4