terraform-infra-common

terraform-infra-common

A repository containing a collection of common infrastructure modules for encapsulating common Cloud Run and GCP patterns.

Usage

To use components in this library, you must provide the project in a provider.google resource in your top-level main.tf:

provider "google" {
  project = var.project
}

Resource Labeling Convention

All modules in this repository follow a consistent labeling pattern for GCP cost allocation and resource organization:

locals {
  default_labels = {
    basename(abspath(path.module)) = var.name
    terraform-module               = basename(abspath(path.module))
    product                        = var.product
    team                           = var.team
  }

  merged_labels = merge(local.default_labels, var.labels)
}

This pattern:

• Enables cost tracking to break down each module by use
• Maintains consistency across all infrastructure modules
• Supports team attribution through team labels (with backward compatibility for deprecated squad)
• Allows custom labels via the labels variable
• Provides module identification via the terraform-module label
• Sets both squad and team labels to the same value for resource tagging

The basename(abspath(path.module)) automatically derives the module name (e.g., "gke", "redis", "workqueue") without requiring hardcoded values.

Team vs Squad

All modules support both team and squad variables for backward compatibility:

• Use team for new code (preferred)
• squad is deprecated but still supported
• team takes precedence if both are provided
• If neither is specified, both labels default to "unknown"

Submitting Changes

These modules are canonically located within a private Chainguard repository, and are continuously pushed from there to this repository.

If you would like to submit a PR, please do make one against this repository. After the review process, someone at Chainguard will merge it into our internal repository, and the change will then be pushed here.