GCP Label Validator

About This Tool

The GCP Label Validator checks your Google Cloud resource labels against GCP's naming rules and your organizational labeling policies. Labels in GCP have specific constraints: keys and values must be lowercase, start with a letter, and contain only hyphens, underscores, and alphanumeric characters. This tool validates labels in bulk, flags violations, and ensures compliance with custom policies like required keys (environment, team, cost-center). It helps prevent deployment failures caused by invalid labels.

When to Use This Tool

• •Validate a set of resource labels before applying them via Terraform or Deployment Manager to catch naming violations early.
• •Check that all required organizational labels (like environment, team, cost-center) are present on a resource configuration.
• •Audit labels exported from existing GCP resources to find non-compliant entries that need correction.
• •Verify label key and value character limits and format rules when establishing a new labeling convention.

Frequently Asked Questions

What are the GCP label naming rules?

GCP label keys must be 1-63 characters, start with a lowercase letter, and contain only lowercase letters, numbers, hyphens, and underscores. Values can be empty or up to 63 characters with the same character restrictions. Each resource can have up to 64 labels.

Can I define custom required labels?

Yes. The tool lets you specify required label keys that must be present on every resource. This is useful for enforcing organizational policies around cost allocation, environment tagging, and team ownership.