TL;DR: Migrating applications gradually between Kubernetes deployments so that intra-cluster traffic is not affected, can be challenging. This article proposes an approach that makes use of standard but powerful tools.

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Raise the hand who has never had to migrate applications between two Kubernetes clusters!

Easy, right? Well, not really. Not always.

It may happen for a few reasons: for example, it might be due to some major platform upgrades, or as a result of a consistent resource reorganisation.

While in principle this would seem quite a straight-forward task, the process may get more complex, as dependencies between applications increase, and…

Luca Prete

Cloud Consultant at Google. Deployment engineer, DevOps. Working on systems and networks. SDN specialist.

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