HDP Cluster HA enabled. HA is enabled with respect to HDFS. Real works starts after enabling HA for. Though HA is highly recommended feature, it places many challenges ahead.
Ambari Server and Agent Configuration for Multiple/Single Hosts. Two cluster with different configuration up and running.
Like other security features knox can be of great tool for compliance and govt policy adherence.
Capacity schedulers can be shared. Multi tenancy is well known feature, though a careful research requires before making resources shared. Workload queues need to be planned to ensure smooth operability of cluster.