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introduction istio Ambient Mode

https://istio.io/latest/docs/ambient/

install​

# install cli
mise use -g istioctl@1.28.2


# install gateway api
kubectl get crd gateways.gateway.networking.k8s.io &> /dev/null || \
  kubectl apply -f https://github.com/kubernetes-sigs/gateway-api/releases/download/v1.4.1/standard-install.yaml

# pre check
istioctl version

# install istio
istioctl install \
  --set profile=ambient \
  --skip-confirmation

[!NOTE] if your use k3s with cni "flannel", need add values.cni.cniBinDir,values.cni.cniConfDir ref. https://istio.io/latest/docs/ambient/install/platform-prerequisites/#k3s

# install istio in k3s with cni "flannel"
istioctl install \
  --set profile=ambient \
  --skip-confirmation \
  --set values.global.platform=k3s

Deploy a sample application

https://istio.io/latest/docs/ambient/getting-started/deploy-sample-app/

kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/bookinfo/platform/kube/bookinfo.yaml
kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/bookinfo/platform/kube/bookinfo-versions.yaml

kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/bookinfo/gateway-api/bookinfo-gateway.yaml
kubectl annotate gateway bookinfo-gateway networking.istio.io/service-type=ClusterIP --namespace=default

# access service
kubectl port-forward svc/bookinfo-gateway-istio 8080:80
http://localhost:8080/productpage

Secure and visualize the application

Add Bookinfo to the mesh

kubectl label namespace default istio.io/dataplane-mode=ambient

Visualize the application and metrics

kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/addons/prometheus.yaml
kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/addons/kiali.yaml

issue

for cilium with kube-proxy replace, need change config https://docs.cilium.io/en/stable/network/servicemesh/istio/#gsg-istio

cleanup

kubectl label namespace default istio.io/use-waypoint-
istioctl waypoint delete --all
kubectl label namespace default istio.io/dataplane-mode-

kubectl delete -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/addons/prometheus.yaml
kubectl delete -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/addons/kiali.yaml

kubectl delete httproute reviews
kubectl delete authorizationpolicy productpage-viewer
kubectl delete -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/curl/curl.yaml
kubectl delete -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/bookinfo/platform/kube/bookinfo.yaml
kubectl delete -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/bookinfo/platform/kube/bookinfo-versions.yaml
kubectl delete -f https://raw.githubusercontent.com/istio/istio/release-1.28/samples/bookinfo/gateway-api/bookinfo-gateway.yaml
kubectl delete AuthorizationPolicy productpage-ztunnel