Can the output of this Instance Template builder be checked into source control safely?

Yes. The output is plain text containing only configuration — no Google Cloud credentials, project IDs (unless you typed them), or secrets are included. Treat it like any other infrastructure-as-code artifact: review in pull requests, gate on validation, apply via your change process.

Does this Instance Template builder consider the IAM permissions needed to apply the configuration?

No — generating a Instance Template configuration is independent of the IAM roles required to apply it. Apply the output with a principal that has the documented permissions for that service. For least-privilege scoping, GCP's Policy Intelligence and the Role Recommender produce permission lists scoped to actual usage.

GCP Instance Template Builder

ComputeGCP

Build Compute Engine instance template configurations with machine type, disks, networking, and shielded VM.

Last verified: May 2026

Compute Engine Instance Templates Configuration

Build Compute Engine instance template configurations with machine type, disks, networking, shielded VM, and metadata.

Required Fields

nameproperties.machineTypeproperties.disksproperties.networkInterfaces

{
  "name": "web-server-template-v3",
  "description": "Production web server instance template with auto-healing",
  "properties": {
    "machineType": "e2-standard-4",
    "disks": [
      {
        "boot": true,
        "autoDelete": true,
        "initializeParams": {
          "sourceImage": "projects/my-project/global/images/web-server-golden-v3",
          "diskSizeGb": 50,
          "diskType": "pd-balanced",
          "labels": {
            "image-version": "v3"
          }
        }
      }
    ],
    "networkInterfaces": [
      {
        "network": "projects/my-project/global/networks/prod-vpc",
        "subnetwork": "projects/my-project/regions/us-central1/subnetworks/web-tier",
        "accessConfigs": [
          {
            "type": "ONE_TO_ONE_NAT",
            "networkTier": "PREMIUM"
          }
        ]
      }
    ],
    "serviceAccounts": [
      {
        "email": "web-server@my-project.iam.gserviceaccount.com",
        "scopes": ["https://www.googleapis.com/auth/cloud-platform"]
      }
    ],
    "scheduling": {
      "automaticRestart": true,
      "onHostMaintenance": "MIGRATE",
      "provisioningModel": "STANDARD"
    },
    "shieldedInstanceConfig": {
      "enableSecureBoot": true,
      "enableVtpm": true,
      "enableIntegrityMonitoring": true
    },
    "confidentialInstanceConfig": {
      "enableConfidentialCompute": false
    },
    "tags": {
      "items": ["http-server", "https-server", "health-check"]
    },
    "metadata": {
      "items": [
        { "key": "enable-oslogin", "value": "TRUE" },
        { "key": "startup-script-url", "value": "gs://my-project-scripts/web-startup.sh" }
      ]
    },
    "labels": {
      "tier": "web",
      "managed-by": "mig"
    }
  }
}

Generated Output

Output will appear here...

See It in Action

Your team has 5 different application tiers each with hand-crafted instance templates — each template has subtly different shielded VM settings, OS image versions, networking config. The builder generates 5 templates from a shared base: same shielded-VM hardening, same monitoring agent, same OS-Login enabled, only differs in machine type and startup script. Drift between tiers eliminated; security baseline applied consistently across the fleet. New tiers can copy the base template + adjust 2-3 specific settings instead of crafting a new config from scratch.

What This Tool Does

Build Compute Engine instance template configurations with machine type, disks, networking, and shielded VM. This tool helps GCP engineers generate valid configurations quickly without consulting documentation, reducing errors and accelerating infrastructure deployment. All processing runs in your browser with no data sent to external servers.

Technical Details

The builder constructs Compute Engine instance template configurations: template resource (machine_type or custom CPU+memory, source_image or source_disk, disks array with boot disk + additional disks, network_interface with subnet/access_config, service_account binding, shielded_instance_config: secure_boot/vtpm/integrity_monitoring all true, confidential_instance_config for confidential VMs, metadata for startup scripts, scheduling for Spot/preemptible). Output is generated as gcloud compute instance-templates create commands and Terraform google_compute_instance_template resources.

Common Use Cases

1Producing a Instance Template starting point for a new service that follows the Google Cloud reference architecture rather than copy-paste from another team's repo.
2Onboarding a new engineer by giving them a Instance Template sandbox to iterate on without touching live projects.
3Building a Instance Template reference implementation for a partner integration where you cannot rely on console access.
4Generating a Instance Template starting point for a Google Cloud Architecture Framework review where reviewers want baseline configs.

Common Questions

Can the output of this Instance Template builder be checked into source control safely?: Yes. The output is plain text containing only configuration — no Google Cloud credentials, project IDs (unless you typed them), or secrets are included. Treat it like any other infrastructure-as-code artifact: review in pull requests, gate on validation, apply via your change process.
Does this Instance Template builder consider the IAM permissions needed to apply the configuration?: No — generating a Instance Template configuration is independent of the IAM roles required to apply it. Apply the output with a principal that has the documented permissions for that service. For least-privilege scoping, GCP's Policy Intelligence and the Role Recommender produce permission lists scoped to actual usage.

Expert Tips

TIP

Instance templates are the blueprint for managed instance groups (MIGs). Define once in the template, instantiate many times in the MIG. Updates to the template apply to NEW instances launched from it — to update existing, use rolling replacement on the MIG.

TIP

Always enable Shielded VM features: secure boot, vTPM, integrity monitoring. Free protections against rootkits and boot-time malware. The only reason to disable: legacy OSes that don't support secure boot. For modern Linux/Windows, always enable.

TIP

Use confidential computing for workloads handling regulated data. AMD SEV-based confidential VMs encrypt memory at runtime — even Google can't read your VM's RAM. Adds ~5-10% performance overhead but enables compliance scenarios that were previously impossible (handling financial / healthcare data with cryptographic isolation).

Related Learning Guides

Compute Engine Machine Types22 min read
GKE vs Cloud Run Decision24 min read

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Disclaimer: This tool runs entirely in your browser. No data is sent to our servers. Always verify outputs before using them in production. AWS, Azure, and GCP are trademarks of their respective owners.