Can I install key trustee server to a cluster with existing services like hdfs, atlas etc?

[#1]

i have added on my cluster 1 node that is empty, and I want to add the keytrustee service in it but I encounter this when setting up : The Key Trustee Server service should not be added to a cluster with existing services. 

does the key trustee server needs a separate new cluster or just a new empty node where it will be installed is okay?

[#2 · Accepted solution]

KT should be installed in it's own cluster.

From a security standpoint, you don't want other services on the box.