Gemini Iac Secure Compute Provisioning

What the solution is

This solution uses Gemini Cloud Assist to generate Terraform Infrastructure as Code (IaC) that establishes an enterprise-grade, secure private compute architecture adhering to the Google Cloud Well-Architected Framework.

How it meets the requirements

• No external IP addresses: In Google Cloud Terraform configurations, omitting the access_config block inside network_interface ensures that the VM instances are provisioned without an external (public) IP address.
• Outbound internet access: Provisioning a Cloud Router combined with a Cloud NAT gateway allows private Compute Engine instances in the custom subnet to initiate egress connections to the internet (for package updates) without exposing them to inbound internet traffic.
• Avoid default VPC: Declaring a dedicated custom VPC network and subnet ensures strict boundary isolation and prevents using the default network and its overly permissive pre-populated firewall rules.
• Least-privilege service account: Specifying an explicit, custom IAM service account in the instance template prevents reliance on the default Compute Engine service account, which often contains overly broad permissions.

Key advantages and capabilities

• Enhanced Security Posture: Disabling external IPs prevents direct Layer 3/4 inbound attacks from the public internet.
• Managed Egress: Cloud NAT scales automatically without requiring proxy VM management or complex routing tables.
• Deterministic IaC: Defining the instance template in Terraform ensures reproducible deployments across environments.
• Granular Access Control: Dedicated service accounts enable role assignment aligned strictly with the principle of least privilege.

Why this is optimal

This approach directly satisfies every security requirement while adopting standard Google Cloud best practices for network isolation, controlled egress, and identity governance.