Reference Guide
...
SFTP Proxy Connections
Global SSH Key Connection
if connecting to devices with an ssh key is preferred, the globalsshkey should be defined for the device group if an ssh key is also preferred to connect to an sftp device, it can be configured in kron pam as well to use an ssh key, the globalusername and globalsshkey need to be defined for the device group navigate to devices > inventory choose the desired device group, and select edit set the privileged target device username as globalusername set the ssh key as globalsshkey