Can I use an RSA keypair instead of a user name and password to monitor via SSH?

Yes. Every installation of CloudTest comes bundled with a 2048-bit RSA public key that you can add to the "authorized keys" list of any Unix-based server you want to monitor. Alternatively, you can use your own key pair by entering it into the Monitoring Server wizard. The bundled public key is available in the "System Resource Type and Authentication" step of the Monitoring Server Wizard.