Istio service mesh guides Istio GKE setup Prerequisites - client tools GKE cluster setup Cloud DNS setup Install Istio with Helm Configure Istio Gateway with Let's Encrypt wildcard certificate Expose services outside the service mesh Progressive delivery walkthrough Automated canary deployments with Flagger A/B testing for a micro-service stack with Helm OpenFaaS service mesh walkthrough Configure OpenFaaS mutual TLS Configure OpenFaaS access policies Install OpenFaaS with Helm Configure OpenFaaS Gateway to receive external traffic Canary deployments for OpenFaaS functions