Create SSH key locally and install in remote machine

1. On client, navigate to the ssh folder.

   cd ~/.ssh
   

2. Generate a key pair, public and private. Make sure to specify a unique name to allow ids for connecting to multiple devices.

   ssh-keygen
   

3. Add the key to the ssh agent, so it is used when attempting to connect.

   ssh-add ~/.ssh/key-file-name
   

4. Copy to the target server.

   ssh-copy-id username@remote-host
   

5. Verify by trying to connect to the remote host.

   ssh user@remote-host -i ~/.ssh/key-file-name
   

Reference

# List keys known by ssh-agent
ssh-add -l