How do you upgrade a Kubernetes cluster to the latest release without breaking anything?

And what if you had to upgrade hundreds of clusters simultaneously?

In this episode, Pierre explains the process, tooling and testing strategy in upgrading clusters at scale.

You will learn:

- How the team at Qovery keeps updated with the latest (vanilla) Kubernetes changes and managed services changelogs.
- How to upgrade Helm charts gradually and safely. Pierre has some tips for Custom Resource Definitions (CRDs).
- How to test API deprecations with end-to-end testing.
- How to automate the process of upgrading clusters.

You will also learn from Pierre's experience in managing stateful applications in Kubernetes with 4500 nodes on bare metal.

Watch it here: https://kube.fm/upgrading-100s-clusters-pierre

Listen on:

- Apple Podcast https://kube.fm/apple
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