To be able to ssh from one system to another without having to enter the password each time, do this:

On your local system from your home directory run the ssh-keygen command and accept the defaults.

Now copy the contents of the newly created /home/userid/.ssh/id_rsa.pub file into a file (see next step) on the remote system.

Copy the contents of the above file to a /home/userid/.ssh/authorized_keys file on the remote system.
(Note: you may have to ssh from the remote back to your local machine so the .ssh folder gets created first.)