You can add and edit up to a default of five credentials in the default cred.yaml file and use that file to discover and onboard devices.
Before you edit the credentials of a Dell PowerEdge server in the default cred.yaml file, you must first change the default root password in iDRAC. For more information, see the iDRAC documentation.
For more information about the default cred.yaml file and how to increase the maximum number of devices you can discover to 20, see Default credentials for device discovery.