https://istio.io

https://github.com/istio/istio
https://github.com/istio/proxy

https://istio.io/docs/
https://istio.io/docs/concepts/
https://istio.io/docs/concepts/policy-and-control/mixer.html
https://istio.io/docs/concepts/traffic-management/pilot.html

misc
https://istio.io/help/ops/component-debugging/

gke
https://cloud.google.com/istio/docs/istio-on-gke/overview