Grafana, service graph and zipking aren't deployed after the installation of Istio.There's no way to install these add-ons after the initial install of Istio??
It depends on how did you install istio.
if installed with helm install, then you can install add-ons using command like this:
helm upgrade istio istio-1.0.0/install/kubernetes/helm/istio --set grafana.enabled=true,servicegraph.enabled=true,tracing.enabled=trueor you installed with helm template, then you need to edit the values.yaml in your helm template directory to enable those add-ons, then install it:
helm template install/kubernetes/helm/istio --name istio --namespace istio-system > $HOME/istio.yaml
kubectl apply -f $HOME/istio.yaml