Hi GaryS,   Thanks for following up that you were able to resolve your issue!   For others, to clarify: If you change the username and password for Cloudera Manager (for example, from the default admin/admin), then you do need to update Altus Director with the new credentials. That way, Altus Director can continue to work with Cloudera Manager to do things like add new hosts to a cluster. There is an option in the dropdown for a deployment in Altus Director to update the credentials.   In case there is still a problem in communications, a workaround is to set Cloudera Manager (and Altus Director) back to admin/admin, then do what you need to do, and then switch Cloudera Manager back. There is in fact one scenario in Altus Director where this is necessary, which we're working on fixing.   To add to what Asif said about the ways to add a new cluster node through Director: Besides the UI, you can use the Altus Director server API as well. The UI is just a special client for the API, anyway. Visit http://yourdirectorhost.example:7189/api-console/ for an interactive (Swagger) console to experiment. You can also try using the Java or Python SDKs, available on GitHub.   https://github.com/cloudera/director-sdk ... View more