Google Cloud - Zonal Managed Instance Groups¶

Step-01: Introduction¶

Create Regional Health check
Create Firewall rule
Create Instance Template
Create Zonal Managed Instance Group

Step-02: Create Regional Health Check - TCP¶

# Create Regional Health Check
gcloud compute health-checks create tcp regional-tcp-health-check \
  --port=80 \
  --region=us-central1

Step-03: Create Firewwall Rules¶

This firewall rule is already created as part of demo-1, just for reference only

# Firewall Rule-1: Ingress rule that allows traffic from the Google Cloud health checking systems (130.211.0.0/22 and 35.191.0.0/16).
gcloud compute firewall-rules create vpc3-custom-allow-health-check \
  --network=vpc3-custom \
  --description=Allows\ traffic\ from\ Google\ Cloud\ health\ checking\ systems \
  --direction=ingress \
  --source-ranges=130.211.0.0/22,35.191.0.0/16 \
  --action=allow \
  --rules=tcp:80

Step-04: Create Instance Template¶

# us-central1: Create Instance Template
gcloud compute instance-templates create it-rlbdemo-us-central1 \
   --region=us-central1 \
   --network=vpc3-custom \
   --subnet=us-central1-subnet \
   --tags=lb-tag \
   --machine-type=e2-micro \
   --metadata-from-file=startup-script=nginx-webserver.sh

Step-05: Create Zonal Managed Instance Groups¶

# Zone: us-central1-a: Create Managed Instance Groups in the Zone
gcloud compute instance-groups managed create zmig-us-1 \
    --zone us-central1-a \
    --size 2 \
    --template it-rlbdemo-us-central1 

# Zone: us-central1-c: Create Managed Instance Groups in the Zone
gcloud compute instance-groups managed create zmig-us-2 \
    --zone us-central1-c \
    --size 2 \
    --template it-rlbdemo-us-central1