Google Cloud - Use Cloud Shell and gcloud CLI

Step-01: Introduction¶

Perform following tasks using gcloud CLI
Create VM Instance with startup-script and tags
Update VM Instance
Stop and Start VM Instance
Delete VM Instance

Step-02: Create VM using gcloud CLI¶

TAGS: Tags allow network firewall rules and routes to be applied to specified VM instances
Important Note: Upload webserver-install.sh to Google Cloud shell if running gcloud commands on cloud shell

# Set Project
gcloud config set project PROJECT_ID
gcloud config set project gcplearn9

# Create VM Instance
gcloud compute instances create demo3-vm-gcloud \
  --zone=us-central1-a \
  --machine-type=e2-micro \
  --network-interface=subnet=default \
  --tags=http-server \
  --metadata-from-file=startup-script=webserver-install.sh 

# List Compute Instances
gcloud compute instances list   

## Optional Commands - For reference
# To list instances with their respective status and tags, run:
gcloud compute instances list --format='table(name,status,tags.list())'

# To list instances tagged with a specific tag, tag1, run:
gcloud compute instances list --filter='tags:http-server'

Step-03: Stop and Start a VM Instance¶

# Stop VM Instance
gcloud compute instances stop demo3-vm-gcloud --zone=us-central1-a
gcloud compute instances list --filter='name:demo3-vm-gcloud'

# Start VM Instance
gcloud compute instances start demo3-vm-gcloud --zone=us-central1-a
gcloud compute instances list --filter='name:demo3-vm-gcloud'

Step-04: Update VM using gcloud CLI¶

# Update VM: Enable deletion protection
gcloud compute instances update demo3-vm-gcloud \
    --zone=us-central1-a \
    --deletion-protection

# Delete VM
gcloud compute instances delete demo3-vm-gcloud --zone=us-central1-a 

## ERROR MESSAGE
ERROR: (gcloud.compute.instances.delete) Could not fetch resource:
 - Invalid resource usage: 'Resource cannot be deleted if it's protected against deletion. 

# Update VM: Disable deletion protection
gcloud compute instances update demo3-vm-gcloud \
    --zone=us-central1-a \
    --no-deletion-protection

# Delete VM
gcloud compute instances delete demo3-vm-gcloud --zone=us-central1-a