i am trying to follow the instructions here to set up passwordless ssh between root accounts (needed to use Ambari).
However this involves ssh-copy-id user@machine
and since user is root, when I try to do this: ssh-copy-id root@mypc
I get asked for root's password. AFAIK there is no password, but please correct me if I am wrong, and any other pointers are gratefully received.
EDIT: so what I am trying to do is ' 'install your public key in a remote machine's authorized_keys ', but won't I always need to use the root password for this, or is there another way to do it?