gistfile1.txt

#!/bin/bash

CLUSTERS=$(gcloud container clusters list \
  --format 'value(name)[terminator=" "]')
NODE_PORT=32080

gcloud compute health-checks create tcp hello-kubernetes-health-check --port ${NODE_PORT}
 
gcloud compute backend-services create hello-kubernetes-backend-services \
  --connection-draining-timeout 3600 \
  --enable-cdn \
  --health-checks hello-kubernetes-health-check \
  --global

for c in ${CLUSTERS}; do
  INSTANCE_GROUP_NAME=$(gcloud container clusters describe ${c} \
    --zone ${c} \
    --format 'value(nodePools[0].instanceGroupUrls[0].basename())')

  gcloud compute instance-groups set-named-ports ${INSTANCE_GROUP_NAME} \
    --named-ports=http:${NODE_PORT} \
    --zone ${c}
   
  gcloud compute backend-services add-backend hello-kubernetes-backend-services \
    --balancing-mode RATE \
    --description "Hello Kubernetes ${c} Backend Service" \
    --instance-group ${INSTANCE_GROUP_NAME} \
    --instance-group-zone ${c} \
    --max-rate 500 \
    --global
done

gcloud compute url-maps create hello-kubernetes-global-services \
  --default-service hello-kubernetes-backend-services

gcloud compute target-http-proxies create hello-kubernetes-http-proxy \
  --url-map hello-kubernetes-global-services
 
gcloud compute forwarding-rules create hello-kubernetes-forwarding-rules \
  --target-http-proxy hello-kubernetes-http-proxy \
  --ports 80 \
  --global
 
gcloud compute firewall-rules create hello-kubernetes-backend-services \
  --allow tcp:${NODE_PORT} \
  --source-ranges 130.211.0.0/22,35.191.0.0/16