createTemplate.sh

gcloud beta compute --project=<project_id> instance-templates create hello-world-envoy \
    --machine-type=e2-medium \
    --subnet=projects/<project_id>/regions/asia-southeast2/subnetworks/<subnet> \
    --network-tier=PREMIUM \
    --metadata=startup-script=\#\!\ /bin/bash$'\n'apt-get\ update$'\n'apt-get\ install\ apache2\ -y$'\n'a2ensite\ default-ssl$'\n'a2enmod\ ssl$'\n'vm_hostname=\"\$\(curl\ -H\ \"Metadata-Flavor:Google\"\ \\$'\n'http://169.254.169.254/computeMetadata/v1/instance/name\)\"$'\n'echo\ \"Page\ served\ from:\ \$vm_hostname\"\ \|\ \\$'\n'tee\ /var/www/html/index.html \
    --maintenance-policy=MIGRATE \
    --service-account=<service_account> \
    --scopes=https://www.googleapis.com/auth/cloud-platform \
    --region=asia-southeast2 \
    --tags=http-server,https-server \
    --image=debian-9-stretch-v20210817 \
    --image-project=debian-cloud \
    --boot-disk-size=10GB \
    --boot-disk-type=pd-balanced \
    --boot-disk-device-name=hello-world-envoy \
    --reservation-affinity=any \
    --service-proxy=enabled