Hadoop.SSH.PublicKey.Authentication
1. Generate public and private SSH keys on the
Primary Server host.
ssh-keygen
2. Copy the SSH Public Key (id_rsa.pub) to the
user account on your target hosts.
.ssh/id_rsa
.ssh/id_rsa.pub
3. Add the SSH Public Key to the authorized_keys
file on your target hosts.
cat id_rsa.pub
>> authorized_keys
4. Depending on your version of SSH, you may need
to set permissions on the .ssh directory (to 700) and the authorized_keys file
in that directory (to 600) on the target hosts.
chmod 700
~/.ssh
chmod 600
~/.ssh/authorized_keys
5. From the Primary Server, make sure you can
connect to each host in the cluster using SSH, without having to enter a
password.
ssh
root@<remote.target.host>
