The following elements are required to integrate Nirmata with HashiCorp Vault.

1. Nirmata Cluster with Kubernetes 1.8+, minimum 3 nodes in a cluster. (This example uses Kubernetes version 1.9.4 with 3 nodes).
2. Flannel Network Overlay
3. RBAC usage on cluster

Resources: This example utilizes resources from the following github repo: Vault Operator/etcd operator and Vault and etcd clusters