istio-multicluster-demo

This repository contains a demo setup for Istio multicluster (multi-primary with two networks). The setup includes:

• Two different clusters (east and west) in different regions
• Istio 1.27 installed in both clusters (sidecar mode)
  • External ingress in both clusters
  • East-west gateway in both clusters
• Components
  • An example app
  • cert-manager
  • skiperator

Architecture

Prerequisites

• A privileged DigitalOcean token exposed as DIGITALOCEAN_TOKEN environment variable

References

"Vi bygde et hybridmesh. Det var vakkert. Det var unødvendig." by Bård Ove Hoel and Even Holthe (Hello Stavanger 2025). Slides can be found here.