create-global-lb.sh

gcloud compute instance-groups unmanaged create taiwan \
  --zone asia-east1-a
 
gcloud compute instance-groups unmanaged add-instances taiwan \
  --instances $(kubectl get nodes \
    --context taiwan \
    --output=jsonpath='{range .items[*]}{.metadata.name},{end}') \
  --zone asia-east1-a
 
gcloud compute instance-groups set-named-ports taiwan \
  --named-ports=http:30080 \
  --zone asia-east1-a

gcloud compute instance-groups unmanaged create belgium \
  --zone europe-west1-b
 
gcloud compute instance-groups unmanaged add-instances belgium \
  --instances $(kubectl get nodes \
    --context belgium \
    --output=jsonpath='{range .items[*]}{.metadata.name},{end}') \
  --zone europe-west1-b
 
gcloud compute instance-groups set-named-ports belgium \
  --named-ports=http:30080 \
  --zone europe-west1-b

gcloud compute instance-groups unmanaged create oregon \
  --zone us-west1-b

gcloud compute instance-groups unmanaged add-instances oregon \
  --instances $(kubectl get nodes \
    --context oregon \
    --output=jsonpath='{range .items[*]}{.metadata.name},{end}') \
  --zone us-west1-b

gcloud compute instance-groups set-named-ports oregon \
  --named-ports=http:30080 \
  --zone us-west1-b


gcloud compute health-checks create tcp ping-health-check --port 30080
 
gcloud compute backend-services create ping-backend-services \
  --health-checks ping-health-check \
  --global
 
gcloud compute backend-services add-backend ping-backend-services \
  --instance-group taiwan \
  --instance-group-zone asia-east1-a \
  --global
 
gcloud compute backend-services add-backend ping-backend-services \
  --instance-group belgium \
  --instance-group-zone europe-west1-b \
  --global

gcloud compute backend-services add-backend ping-backend-services \
  --instance-group oregon \
  --instance-group-zone us-west1-b \
  --global
 
gcloud compute url-maps create ping-url-map \
    --default-service ping-backend-services

gcloud compute target-http-proxies create ping-http-proxy \
    --url-map ping-url-map
 
gcloud compute forwarding-rules create ping-forwarding-rules \
  --target-http-proxy ping-http-proxy \
  --ports 80 \
  --global
 
gcloud compute firewall-rules create ping-backend-services \
  --allow tcp:30080 \
  --source-ranges 130.211.0.0/22,35.191.0.0/16