My colleague Jonathan Asvestis has recently published a 3 part series on putting all of these great technologies together in the most simplest way I have seen to date. Do check it out!
GitHub Repository of his example code: https://github.com/asvesj/powerflex-csi
PowerFlex and DevOps (Part 1) – Using Terraform to provision vSphere virtual machines
PowerFlex and DevOps (Part 2) – Kubernetes creation and configuration using Ansible playbooks
PowerFlex and DevOps (Part 3) – PowerFlex CSI plugin install and Cassandra persistent volumes
Updated – 8th October 2020 for the CSI 1.2 PowerFlex version which was recently released.: