New Cluster Install Question

[#1]

Trying to create a two node cluster on Ambari. Can Ambari host considered as a node in the cluster? I have entered the hostname of the Ambari host & the hostname of the other node in the list of hosts. The first host fails with Permission denied error so wondering if this is allowed.

[#2]

I did follow those steps, guess I messed up. Redid the entire thing and it went through. Thank you for the swift response!