# ssh-copy-id email@example.com
/usr/bin/ssh-copy-id: ERROR: No identities found
You will have to manually define the path of the public key using -i switch as shown below
# ssh-copy-id -i .ssh/id_rsa.pub 192.168.1.11
firstname.lastname@example.org's password:[Provide root password for client machine]
Now try logging into the machine, with "ssh '192.168.1.11'", and check in:
to make sure we haven't added extra keys that you weren't expecting.
That did the trick.
In my another article I have shared the steps to configure SSH port forwarding and tunnelling in Linux