0-bootstrap

0-bootstrap

This repo is part of a multi-part guide that shows how to configure and deploy the example.com reference architecture described in Google Cloud security foundations guide. The following table lists the stages of this deployment.

0-bootstrap (this file)	Bootstraps a Google Cloud organization, creating all the required resources and permissions to start using the Cloud Foundation Toolkit (CFT). This step also configures a CI/CD pipeline for foundations code in subsequent stages.
1-org	Sets up top-level shared folders, monitoring and networking projects, and organization-level logging, and sets baseline security settings through organizational policy.
2-environments	Sets up development, nonproduction, and production environments within the Google Cloud organization that you've created.
3-networks-dual-svpc	Sets up base and restricted shared VPCs with default DNS, NAT (optional), Private Service networking, VPC service controls, on-premises Dedicated Interconnect, and baseline firewall rules for each environment. It also sets up the global DNS hub.
3-networks-hub-and-spoke	Sets up base and restricted shared VPCs with all the default configuration found on step 3-networks-dual-svpc, but here the architecture will be based on the Hub and Spoke network model. It also sets up the global DNS hub.
4-projects	Set up a folder structure, projects, and application infrastructure pipeline for applications, which are connected as service projects to the shared VPC created in the previous stage.
5-app-infra	Deploy a Compute Engine instance in one of the business unit projects using the infra pipeline setup in 4-projects.

For an overview of the architecture and the parts, see the terraform-example-foundation README file.

Purpose

The purpose of this step is to bootstrap a Google Cloud organization, creating all the required resources and permissions to start using the Cloud Foundation Toolkit (CFT). This step also configures a CI/CD Pipeline for foundations code in subsequent stages. The CI/CD Pipeline can use either Cloud Build and Cloud Source Repos or Jenkins and your own Git repos (which might live on-premises).

Prerequisites

To run the commands described in this document, install the following:

• Google Cloud SDK version 393.0.0 or later
• Git version 2.28.0 or later
• Terraform version 1.3.0
• jq version 1.6.0 or later

Note: Make sure that you use version 1.3.0 of Terraform throughout this series. Otherwise, you might experience Terraform state snapshot lock errors.

Also make sure that you've done the following:

1. Set up a Google Cloud organization.
2. Set up a Google Cloud billing account.
3. Create Cloud Identity or Google Workspace groups as defined in groups for access control. Set the variables in terraform.tfvars (groups block) to use the specific group names you create.
4. For the user who will run the procedures in this document, grant the following roles:
   • The roles/resourcemanager.organizationAdmin role on the Google Cloud organization.
   • The roles/orgpolicy.policyAdmin role on the Google Cloud organization.
   • The roles/resourcemanager.projectCreator role on the Google Cloud organization.
   • The roles/billing.admin role on the billing account.
   • The roles/resourcemanager.folderCreator role.

Optional - Automatic creation of Google Cloud Identity groups

In the foundation, Google Cloud Identity groups are used for authentication and access management .

To enable automatic creation of the groups, complete the following actions:

• Have an existing project for Cloud Identity API billing.
• Enable the Cloud Identity API (cloudidentity.googleapis.com) on the billing project.
• Grant role roles/serviceusage.serviceUsageConsumer to the user running Terraform on the billing project.
• Change the field groups.create_required_groups to true to create the required groups.
• Change the field groups.create_optional_groups to true and fill the groups.optional_groups with the emails to be created.

Optional - Cloud Build access to on-prem

See onprem for instructions on how to configure Cloud Build access to your on-premises environment.

Troubleshooting

See troubleshooting if you run into issues during this step.

Deploying with Jenkins

If you are using the jenkins_bootstrap sub-module, see README-Jenkins for requirements and instructions on how to run the 0-bootstrap step. Using Jenkins requires a few manual steps, including configuring connectivity with your current Jenkins manager (controller) environment.

Deploying with GitHub Actions

If you are deploying using GitHub Actions, see README-GitHub.md for requirements and instructions on how to run the 0-bootstrap step. Using GitHub Actions requires manual creation of the GitHub repositories used in each stage.

Deploying with GitLab Pipelines

If you are deploying using GitLab Pipelines, see README-GitLab.md for requirements and instructions on how to run the 0-bootstrap step. Using GitLab Pipeline requires manual creation of the GitLab projects (repositories) used in each stage.

Deploying with Terraform Cloud

If you are deploying using Terraform Cloud, see README-Terraform-Cloud.md for requirements and instructions on how to run the 0-bootstrap step. Using Terraform Cloud requires manual creation of the GitHub repositories or GitLab projects used in each stage.

Deploying with Cloud Build

Note: When deploying with cloud build is also possible to use a script helper to do the deploy.

1. Clone terraform-example-foundation into your local environment and navigate to the 0-bootstrap folder.

   git clone https://github.com/terraform-google-modules/terraform-example-foundation.git
   
   cd terraform-example-foundation/0-bootstrap

2. Rename terraform.example.tfvars to terraform.tfvars and update the file with values from your environment:

   mv terraform.example.tfvars terraform.tfvars

3. Use the helper script validate-requirements.sh to validate your environment:

   ../scripts/validate-requirements.sh -o <ORGANIZATION_ID> -b <BILLING_ACCOUNT_ID> -u <END_USER_EMAIL>

   Note: The script is not able to validate if the user is in a Cloud Identity or Google Workspace group with the required roles.

4. Run terraform init and terraform plan and review the output.

   terraform init
   terraform plan -input=false -out bootstrap.tfplan

5. To validate your policies, run gcloud beta terraform vet. For installation instructions, see Install Google Cloud CLI.

6. Run the following commands and check for violations:

   export VET_PROJECT_ID=A-VALID-PROJECT-ID
   terraform show -json bootstrap.tfplan > bootstrap.json
   gcloud beta terraform vet bootstrap.json --policy-library="../policy-library" --project ${VET_PROJECT_ID}

   A-VALID-PROJECT-ID must be an existing project you have access to. This is necessary because gcloud beta terraform vet needs to link resources to a valid Google Cloud Platform project.

7. Run terraform apply.

   terraform apply bootstrap.tfplan

8. Run terraform output to get the email address of the terraform service accounts that will be used to run manual steps for shared environments in steps 3-networks-dual-svpc, 3-networks-hub-and-spoke, and 4-projects and the state bucket that will be used by step 4-projects.

   export network_step_sa=$(terraform output -raw networks_step_terraform_service_account_email)
   export projects_step_sa=$(terraform output -raw projects_step_terraform_service_account_email)
   export projects_gcs_bucket_tfstate=$(terraform output -raw projects_gcs_bucket_tfstate)
   
   echo "network step service account = ${network_step_sa}"
   echo "projects step service account = ${projects_step_sa}"
   echo "projects gcs bucket tfstate = ${projects_gcs_bucket_tfstate}"

9. Run terraform output to get the ID of your Cloud Build project:

   export cloudbuild_project_id=$(terraform output -raw cloudbuild_project_id)
   echo "cloud build project ID = ${cloudbuild_project_id}"

10. Copy the backend and update backend.tf with the name of your Google Cloud Storage bucket for Terraform's state. Also update the backend.tf of all steps.

    export backend_bucket=$(terraform output -raw gcs_bucket_tfstate)
    echo "backend_bucket = ${backend_bucket}"
    
    export backend_bucket_projects=$(terraform output -raw projects_gcs_bucket_tfstate)
    echo "backend_bucket_projects = ${backend_bucket_projects}"
    
    cp backend.tf.example backend.tf
    cd ..
    
    for i in `find . -name 'backend.tf'`; do sed -i'' -e "s/UPDATE_ME/${backend_bucket}/" $i; done
    for i in `find . -name 'backend.tf'`; do sed -i'' -e "s/UPDATE_PROJECTS_BACKEND/${backend_bucket_projects}/" $i; done
    
    cd 0-bootstrap

11. Re-run terraform init. When you're prompted, agree to copy Terraform state to Cloud Storage.

    terraform init

12. (Optional) Run terraform plan to verify that state is configured correctly. You should see no changes from the previous state.

13. Clone the policy repo and copy contents of policy-library to new repo. Clone the repo at the same level of the terraform-example-foundation folder.

    cd ../..
    
    gcloud source repos clone gcp-policies --project=${cloudbuild_project_id}
    
    cd gcp-policies
    git checkout -b main
    cp -RT ../terraform-example-foundation/policy-library/ .

14. Commit changes and push your main branch to the policy repo.

    git add .
    git commit -m 'Initialize policy library repo'
    git push --set-upstream origin main

15. Navigate out of the repo.

    cd ..

16. Save 0-bootstrap Terraform configuration to gcp-bootstrap source repository:

    gcloud source repos clone gcp-bootstrap --project=${cloudbuild_project_id}
    
    cd gcp-bootstrap
    git checkout -b plan
    mkdir -p envs/shared
    
    cp -RT ../terraform-example-foundation/0-bootstrap/ ./envs/shared
    cp ../terraform-example-foundation/build/cloudbuild-tf-* .
    cp ../terraform-example-foundation/build/tf-wrapper.sh .
    chmod 755 ./tf-wrapper.sh
    
    git add .
    git commit -m 'Initialize bootstrap repo'
    git push --set-upstream origin plan

17. Continue with the instructions in the 1-org step.

Note 1: The stages after 0-bootstrap use terraform_remote_state data source to read common configuration like the organization ID from the output of the 0-bootstrap stage. They will fail if the state is not copied to the Cloud Storage bucket.

Note 2: After the deploy, even if you did not receive the project quota error described in the Troubleshooting guide, we recommend that you request 50 additional projects for the projects step service account created in this step.

Running Terraform locally

If you deploy using Cloud Build, the bucket information is replaced in the state backends as part of the build process when the build is executed by Cloud Build. If you want to execute Terraform locally, you need to add your Cloud Storage bucket to the backend.tf files. Each step has instructions for this change.

Inputs

Name	Description	Type	Default	Required
billing_account	The ID of the billing account to associate projects with.	string	n/a	yes
bucket_force_destroy	When deleting a bucket, this boolean option will delete all contained objects. If false, Terraform will fail to delete buckets which contain objects.	bool	false	no
bucket_prefix	Name prefix to use for state bucket created.	string	"bkt"	no
bucket_tfstate_kms_force_destroy	When deleting a bucket, this boolean option will delete the KMS keys used for the Terraform state bucket.	bool	false	no
default_region	Default region to create resources where applicable.	string	"us-central1"	no
folder_prefix	Name prefix to use for folders created. Should be the same in all steps.	string	"fldr"	no
groups	Contain the details of the Groups to be created.	object({ create_required_groups = optional(bool, false) create_optional_groups = optional(bool, false) billing_project = optional(string, null) required_groups = object({ group_org_admins = string group_billing_admins = string billing_data_users = string audit_data_users = string monitoring_workspace_users = string }) optional_groups = optional(object({ gcp_security_reviewer = optional(string, "") gcp_network_viewer = optional(string, "") gcp_scc_admin = optional(string, "") gcp_global_secrets_admin = optional(string, "") gcp_kms_admin = optional(string, "") }), {}) })	n/a	yes
initial_group_config	Define the group configuration when it is initialized. Valid values are: WITH_INITIAL_OWNER, EMPTY and INITIAL_GROUP_CONFIG_UNSPECIFIED.	string	"WITH_INITIAL_OWNER"	no
org_id	GCP Organization ID	string	n/a	yes
org_policy_admin_role	Additional Org Policy Admin role for admin group. You can use this for testing purposes.	bool	false	no
parent_folder	Optional - for an organization with existing projects or for development/validation. It will place all the example foundation resources under the provided folder instead of the root organization. The value is the numeric folder ID. The folder must already exist.	string	""	no
project_prefix	Name prefix to use for projects created. Should be the same in all steps. Max size is 3 characters.	string	"prj"	no

Outputs

Name	Description
bootstrap_step_terraform_service_account_email	Bootstrap Step Terraform Account
cloud_build_peered_network_id	The ID of the Cloud Build peered network.
cloud_build_private_worker_pool_id	ID of the Cloud Build private worker pool.
cloud_build_worker_peered_ip_range	The IP range of the peered service network.
cloud_build_worker_range_id	The Cloud Build private worker IP range ID.
cloud_builder_artifact_repo	Artifact Registry (AR) Repository created to store TF Cloud Builder images.
cloudbuild_project_id	Project where Cloud Build configuration and terraform container image will reside.
common_config	Common configuration data to be used in other steps.
csr_repos	List of Cloud Source Repos created by the module, linked to Cloud Build triggers.
environment_step_terraform_service_account_email	Environment Step Terraform Account
gcs_bucket_cloudbuild_artifacts	Bucket used to store Cloud Build artifacts in cicd project.
gcs_bucket_cloudbuild_logs	Bucket used to store Cloud Build logs in cicd project.
gcs_bucket_tfstate	Bucket used for storing terraform state for Foundations Pipelines in Seed Project.
networks_step_terraform_service_account_email	Networks Step Terraform Account
optional_groups	List of Google Groups created that are optional to the Example Foundation steps.
organization_step_terraform_service_account_email	Organization Step Terraform Account
projects_gcs_bucket_tfstate	Bucket used for storing terraform state for stage 4-projects foundations pipelines in seed project.
projects_step_terraform_service_account_email	Projects Step Terraform Account
required_groups	List of Google Groups created that are required by the Example Foundation steps.
seed_project_id	Project where service accounts and core APIs will be enabled.