Just try these following commands

1 . ssh-keygen

Press Enter key till you get the prompt

2 . ssh-copy-id -i root@ip_address

(It will once ask for the password of the host system)

3 . ssh root@ip_address

Now you should be able to login without any password

Just try these following commands

1. ssh-keygen

   Press Enter key till you get the prompt

2. ssh-copy-id -i root@ip_address

   (It will once ask for the password of the host system)

3. ssh root@ip_address

   Now you should be able to login without any password