The Prow Upgrade Story

One of my first experiences with Kubernetes was with using Prow. Prow is a Kubernetes CI/CD system. In the Mesosphere/D2IQ days, I had to transition the CI jobs that we were running in Jenkins on Mesos/Marathon to Prow on Kubernetes. In order to learn Kubernetes, I suggested we set up Prow to run the CI jobs for our Mesosphere/D2IQ frontend. That was the first task that I undertook that would help me understand Kubernetes . It was simple but a critical CI/CD system that handles job execution and GitHub automation through policy enforcement. Anyone who has either contributed to Kubernetes or worked with the testing-sig will have come across the weird-looking Prow robots working with your pull requests. And in the GitHub-based ChatOps, there are multiple /slash-commands that are utilized to interact with the state of the pull request. The component listeners listen to these webhooks and act on the state and the command. Just like regular CI/CD systems, they trigger a job on the event, an