High Level interaction on Hadoop Cluster:

Hadoop Cluster interaction to Postgres DB:

The only external interaction from the Hadoop cluster is to the Postgres database.

Interactions to the Hadoop Cluster:

We have external people accessing the following ports:

1. Hive: Port(10000) - Tableau
2. Impala : 21050 - Looker
3. Hue : 8888 - Hue UI interface
4. Admin screen :7180 - Hadoop cluster admin UI

Interactions within the Hadoop cluster:

We need to allow all ports access within the Hadoop cluster. i.e master should be able to access its slave nodes easily.