This idea was suggested several years ago (https://kace.uservoice.com/forums/82699-sma-k1000/suggestions/11384394-ssh-rsa-keys-are-needed-to-let-the-kace-connect-to) and didn't get many votes, so I'm hoping to resurrect support for it here.

Like the OP, I manage many Unix-based servers in my KACE SMA, and I would prefer to disallow username/password authentication whenever possible, especially for appliance service accounts. I was excited to see that "Secret Key" is one of the Credential types, then confused when I couldn't select the one I saved when adding a new Agentless-via-SSH device, then completely disheartened when I read that the "Secret Key" type is only used for working with the KACE Cloud Mobile Device Manager.

The mechanism to utilize SSH keypairs looks like it's already there, and it is a much more secure way to SSH. Please consider extending SSH key functionality in the KACE SMA for use with Linux/Unix devices!