feat(istio): prometheus scripts added

Author: rolandszoke

istio_examples/Prometheus/prometheus.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+kubectl apply -f ~/istio-0.4.0/install/kubernetes/addons/prometheus.yaml
+
+POD_STATUS=""
+while [ "$POD_STATUS" != "Running" ]; do
+  sleep 10
+  POD_STATUS=$(kubectl get pods -l app=prometheus -n istio-system -o jsonpath='{.items[0].status.phase}')
+done
+
+kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l app=prometheus -o jsonpath='{.items[0].metadata.name}') 9090:9090 &
+
+echo "Prometheus running on: http://localhost:9090/"
+
+### DELETE ###
+# lsof -c kubectl -ti:9090 -a | xargs kill
+# kubectl delete -f ~/istio-0.4.0/install/kubernetes/addons/prometheus.yaml