Google Cloud Administrative IAM & Permissions Reference

This reference document details the administrative IAM structure and remediation strategy used by the google-cloud-recipe-foundation-builder recipe. It outlines the 23 recommended administrative roles across 4 core admin groups, maps key permissions to their respective roles, and explains the lazy role remediation strategy.

Table of Contents

• Core Administrative Groups & Roles (L20-L59)
  • 1. Organization Admin Group (L24-L35)
  • 2. Billing Admin Group (L36-L41)
  • 3. Logging/Monitoring Admin Group (L42-L46)
  • 4. Security Admin Group (L47-L59)
• Permission-to-Role Mapping Table (L60-L89)
• Remediation (L90-L135)
  • 1. Organization Admin Group (L94-L103)
  • 2. Billing Admin Group (L104-L115)
  • 3. Logging/Monitoring Admin Group (L116-L125)
  • 4. Security Admin Group (L126-L135)

Core Administrative Groups & Roles

The recipe aligns with Google Cloud's enterprise setup recommendations by verifying roles belonging to 4 core administrative groups (Org Admin, Billing Admin, Logging/Monitoring Admin, and Security Admin):

1. Organization Admin Group (9 Roles)

Responsible for broad administrative controls, folder management, project creation, and billing link permissions:

• roles/resourcemanager.organizationAdmin (Organization Administrator)
• roles/resourcemanager.folderAdmin (Folder Administrator)
• roles/resourcemanager.projectCreator (Project Creator)
• roles/billing.user (Billing Account User)
• roles/iam.organizationRoleAdmin (IAM Organization Role Administrator)
• roles/orgpolicy.policyAdmin (Organization Policy Administrator)
• roles/securitycenter.admin (Security Center Administrator)
• roles/cloudsupport.admin (Support Account Administrator)
• roles/pubsub.admin (Pub/Sub Publisher/Subscriber Administrator)

2. Billing Admin Group (3 Roles)

Manages billing accounts, organization billing creators, and views organizational assets:

• roles/billing.admin (Billing Account Administrator)
• roles/billing.creator (Billing Account Creator)
• roles/resourcemanager.organizationViewer (Organization Viewer)

3. Logging/Monitoring Admin Group (2 Unique Roles)

Configures global logging policies, audit log exports, and centralized metrics monitoring:

• roles/logging.admin (Logging Administrator)
• roles/monitoring.admin (Monitoring Administrator)

4. Security Admin Group (9 Unique Roles)

Audits compliance, sets up security command center, manages keys, and reviews service accounts:

• roles/iam.securityAdmin (Security Administrator)
• roles/iam.securityReviewer (Security Reviewer)
• roles/iam.serviceAccountCreator (Service Account Creator)
• roles/iam.organizationRoleViewer (IAM Organization Role Viewer)
• roles/resourcemanager.folderIamAdmin (Folder IAM Administrator)
• roles/logging.privateLogViewer (Private Log Viewer)
• roles/logging.configWriter (Log View Config Writer)
• roles/container.viewer (Kubernetes Engine Viewer)
• roles/compute.viewer (Compute Viewer)

Permission-to-Role Mapping Table

If any permissions are missing from the command outputs, they map directly to specific roles that should be sequentially granted to the deployment identity:

Remediation

When a command fails with a Permission Denied error, identify the associated role from the mapping table and determine its Administrative Group. Attempt to sequentially grant all roles in that group to the deployment identity.

1. Organization Admin Group (9 roles)

If organization, folder, project, or policy creation fails:

for role in roles/resourcemanager.organizationAdmin roles/resourcemanager.folderAdmin roles/resourcemanager.projectCreator roles/billing.user roles/iam.organizationRoleAdmin roles/orgpolicy.policyAdmin roles/securitycenter.admin roles/cloudsupport.admin roles/pubsub.admin; do
    gcloud organizations add-iam-policy-binding [ORGANIZATION_ID] \
        --member="user:[YOUR_ACCOUNT_EMAIL]" \
        --role="$role"
done

2. Billing Admin Group (3 roles)

If billing project link fails, grant at the billing account level:

for role in roles/billing.admin roles/billing.creator roles/resourcemanager.organizationViewer; do
    gcloud billing accounts add-iam-policy-binding [BILLING_ACCOUNT_ID] \
        --member="user:[YOUR_ACCOUNT_EMAIL]" \
        --role="$role"
done

And also ensure the active identity has roles/billing.user (which is part of the Organization Admin Group) at the organization level.

3. Logging/Monitoring Admin Group (2 roles)

If logging configuration or metrics scope linking fails:

for role in roles/logging.admin roles/monitoring.admin; do
    gcloud organizations add-iam-policy-binding [ORGANIZATION_ID] \
        --member="user:[YOUR_ACCOUNT_EMAIL]" \
        --role="$role"
done

4. Security Admin Group (9 roles)

If security reviews or folder IAM failures occur:

for role in roles/iam.securityAdmin roles/iam.securityReviewer roles/iam.serviceAccountCreator roles/iam.organizationRoleViewer roles/resourcemanager.folderIamAdmin roles/logging.privateLogViewer roles/logging.configWriter roles/container.viewer roles/compute.viewer; do
    gcloud organizations add-iam-policy-binding [ORGANIZATION_ID] \
        --member="user:[YOUR_ACCOUNT_EMAIL]" \
        --role="$role"
done