Setting up networking for one Kubernetes cluster can be a challenge but it becomes even more fun once you add multiple clusters into the mix.

In this talk we’ll go over the solutions that RVU (Uswitch) came up with to allow their applications to talk between clusters and the rationale behind them, from building their own tools like Yggdrasil for multi-cluster ingress to implementing other tools such as Cilium for multi-cluster services.

We’ll see what benefits and drawbacks the different approaches can have and also explore why we opted to avoid using a traditional service mesh to achieve our multi-cluster networking goals.

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