kubectl -n istio-system scale --replicas=1 deploy istio-ingressgateway
kubectl -n istio-system scale --replicas=1 deploy istiod
kubectl -n istio-system delete pod $(kubectl get pods -n istio-system --no-headers -o custom-columns=":metadata.name" | grep prometheus-)
kubectl -n istio-system scale --replicas=1 deploy istio-ingressgateway
kubectl -n istio-system scale --replicas=1 deploy istiod
kubectl -n istio-system delete pod $(kubectl get pods -n istio-system --no-headers -o custom-columns=":metadata.name" | grep prometheus-)