GCP Resource Hierarchy, Roles and Identities - GCP Certification Cheat Sheet


Let’s get a quick overview of resources hierachy from an GCP certification perspective. We will look at important certification questions regarding resource hierarchy, billing, roles and identities.

You will learn

  • What is a Resource Hierarchy?
  • Why it is important and how to set it up?
  • What are the important roles necessary?

Resource Hierarchy in GCP

source: (https://cloud.google.com)

  • Well defined hierarchy:
    • Organization > Folder > Project > Resources
  • Resources are created in projects
  • A Folder can contain multiple projects
  • Organization can contain multiple Folders

  • Organization
    • G-Suite domain or Cloud Identity maps to Organization
    • One Cloud Identity assigns to atmost one Organization
    • Cloud Identity
      • Have Super admins
      • They assign the IAM role of Organization administrator to users
    • Users with Organization administrator role is responsible for
      • Defining the structure of the resource hierarchy
      • Defining IAM policies over the resource hierarchy
      • Delegation of other management roles to other users
    • GCP automatically assigns the Project Creator and Billing Account Creator IAM roles to all users in domain
    • This allows any user to create projects and enable billing for the cost of resources
  • Folder
    • building blocks of multi-layer organizational hierarchies
    • folders can contain other folders and projects
    • Folders Organization - Normally based on the services provided by the resources in the contained projects & policies governing the folders and projects
  • Project
    • Important part of the hierachy
    • Contains resources, GCE services, permissions and manage billing options
    • Anyone with resourcemanager.projects.create IAM permission can create project
    • By default when Organization get created, everyone in the domain is granted that permission
    • Organization has quota of number of projects that can be created

Resource Hierarchy - Recommendations for Enterprises

  • Create separate projects for different environments:
    • Complete isolation between test and production environments
  • Create separate folders for each department:
    • Isolate production applications of one department from another
    • We can create a shared folder for shared resources
  • One project per application per environment:
    • Let’s consider two apps: “A1” and “A2”
    • Let’s assume we need two environments: “DEV” and “PROD”
    • In the ideal world you will create four projects: A1-DEV, A1-PROD, A2-DEV, A2-PROD:
      • Isolates environments from each other
      • DEV changes will NOT break PROD
      • Grant all developers complete access (create, delete, deploy) to DEV Projects
      • Provide production access to operations teams only!

Billing Accounts

  • Billing Account is mandatory for creating resources in a project:
    • Billing Account contains the payment details
    • Every Project with active resources should be associated with a Billing Account
  • Billing Account can be associated with one or more projects
  • You can have multiple billing accounts in an Organization
  • (RECOMMENDATION) Create Billing Accounts representing your organization structure:
    • A startup can have just one Billing account
    • A large enterprise can have a separate billing account for each department
  • Two Types:
    • Self Serve : Billed directly to Credit Card or Bank Account
    • Invoiced : Generate invoices (Used by large enterprises)

Managing Billing - Budget, Alerts and Exports

  • Setup a Cloud Billing Budget to avoid surprises:
    • (RECOMMENDED) Configure Alerts
    • Default alert thresholds set at 50%, 90% & 100%
      • Send alerts to Pub Sub (Optional)
      • Billing admins and Billing Account users are alerted by e-mail
  • Billing data can be exported (on a schedule) to:
    • Big Query (if you want to query information or visualize it)
    • Cloud Storage (for history/archiving)

Organization Policy Service

  • How to enable centralized constraints on all resources created in an Organization?
    • Configure Organization Policy
    • Example: Disable creation of Service Accounts
    • Example: Allow/Deny creation of resources in specific regions
  • Needs a Role - Organization Policy Administrator
  • (Remember) IAM focuses on Who
    • Who can take specific actions on resources?
  • (Remember) Organization Policy focuses on What
    • What can be done on specific resources?

Resource Hierarchy & IAM Policy

  • IAM Policy can be set at any level of the hierarchy
  • Resources inherit the policies of All parents
  • The effective policy for a resource is the union of the policy on that resource and its parents
  • Policy inheritance is transitive:
    • For example: Organization policies are applied at resource level
  • You can’t restrict policy at lower level if permission is given at an higher level

Organization, Billing and Project Roles

  • Organization Administrator
    • Define Resource Hierarchy
    • Define Access Management Policies
    • Manage other users and roles
  • Billing Account Creator - Create Billing Accounts
  • Billing Account Administrator - Manage Billing Accounts (payment instruments, billing exports, link and unlink projects, manage roles on billing account)
    • CANNOT create a Billing Account
  • Billing Account User - Associate Projects with Billing Accounts
    • Typically used in combination with Project Creator
    • These two roles allow user to create new project and link it with billing account
  • Billing Account Viewer - See all Billing Account details

Billing Roles - Quick Review

Roles Description Use Case
Billing Account Creator Permissions to create new billing accounts Finance Team
Billing Account Administrator Manages billing account but can’t create them Finance Team
Billing Account User Assigns projects to billing accounts Project Owner
Billing Account Viewer View only access to billing account Auditor
Billing Account Costs Manager Manage budgets, view & export cost information of billing accounts budget Team
Project Billing Manager Link/UnLink the project to/from billing account Project Owners

Organization, Billing and Project Roles - Scenarios

  • Scenario 1: I’m creating a project and I want to associate an existing billing account with the project
    • Roles needed : Project Creator and Billing Account User (link project to billing account)
  • Scenario 2: I’m a billing auditor
    • Roles needed : Billing Account Viewer role

Certification - Recommended Reading

Introduction to Google Cloud - For AWS Professionals

Getting Started with Docker - 5 Easy Steps

GCP PubSub - GCP Certification Cheat Sheet

GCP IAM - GCP Certification Cheat Sheet

GCP App Engine - GCP Certification Cheat Sheet

GCP Networking VPC - GCP Certification Cheat Sheet

GCP Load Balancers - GCP Certification Cheat Sheet

GCP Kubernetes Engine - GCP Certification Cheat Sheet

GCP Compute Engine - GCP Certification Cheat Sheet

GCP Cloud Storage - GCP Certification Cheat Sheet

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