Istio: How to modify the h2UpgradePolicy globally?
问题 I want up upgrade all incoming http 1.1 connections to http2 in Istio. I understand how to achieve this via destination rules for a particular namespace and pod. However, I want to upgrade all connections in service mesh from http1.1 too http2. Even the documentation recommends this, if Istio sidecar is auto injected here. if sidecar is installed on all pods in the mesh, then this should be set to UPGRADE. Can I update the "istio" ConfigMap under "Istio-system" namespace? If yes, what would