Check status:
kubectl --namespace prometheus get pods -l "release=prometheus"
Get 'admin' user password:
kubectl --namespace prometheus get secrets prometheus-grafana -o jsonpath="{.data.admin-password}" | base64 -d ; echo
Access Grafana local instance:
export POD_NAME=$(kubectl --namespace prometheus get pod -l "app.kubernetes.io/name=grafana,app.kubernetes.io/instance=prometheus" -oname)
kubectl --namespace prometheus port-forward $POD_NAME 3000
Visit https://github.com/prometheus-operator/kube-prometheus for instructions on how to create & configure Alertmanager and Prometheus instances using the Operator.