Different SSH keys for different Droplets
I want to use different SSH keys for different droplets.
I already have a droplet that uses an SSH key named as the "default": idrsa and idrsa.pub. So I want to use another key for another droplet.
I have tried creating a new SSH key pair by:
ssh-keygen -t rsa
Enter file in which to save the key (/Users/myUser/.ssh/id_rsa): dropletName_rsa
Then I have tried to pass the public key to the server by:
cat ~/.ssh/dropletName_rsa.pub | ssh -p portNumber user@ipadress "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"
The key is copied but when I tried to connect with SSH I am prompted with a password request.
If I copy the key with the "default" name: id_rsa.pub. The login without password works. But then I am using the same SSH key pair for two different droplets.
Which solution do you use to improve security?