adfs

Active Directory Federation Services

This blueprint does the following:

Terraform:

• (Optional) Creates a project.
• (Optional) Creates a VPC.
• Sets up managed AD
• Creates a server where AD FS will be installed. This machine will also act as admin workstation for AD.
• Exposes AD FS using GLB.

Ansible:

• Installs the required Windows features and joins the computer to the AD domain.
• Provisions some tests users, groups and group memberships in AD. The data to provision is in the files directory of the ad-provisioning ansible role. There is script available in the scripts/ad-provisioning folder that you can use to generate an alternative users or memberships file.
• Installs AD FS

In addition to this, we also include a Powershell script that facilitates the configuration required for Anthos when authenticating users with AD FS as IdP.

The diagram below depicts the architecture of the blueprint:

Running the blueprint

Clone this repository or open it in cloud shell, then go through the following steps to create resources:

• terraform init
• terraform apply -var project_id=my-project-id -var ad_dns_domain_name=my-domain.org -var adfs_dns_domain_name=adfs.my-domain.org

Once the resources have been created, do the following:

1. Create an A record to point the AD FS DNS domain name to the public IP address returned after the terraform configuration was applied.

2. Run the ansible playbook

    ansible-playbook playbook.yaml
   

Testing the blueprint

1. In your browser open the following URL:

    https://adfs.my-domain.org/adfs/ls/IdpInitiatedSignOn.aspx
   

2. Enter the username and password of one of the users provisioned. The username has to be in the format: [email protected]

3. Verify that you have successfully signed in.

Once done testing, you can clean up resources by running terraform destroy.

Variables

name	description	type	required	default
ad_dns_domain_name	AD DNS domain name.	string	✓
adfs_dns_domain_name	ADFS DNS domain name.	string	✓
prefix	Prefix used for resource names.	string	✓
project_id	Host project ID.	string	✓
ad_ip_cidr_block	Managed AD IP CIDR block.	string		"10.0.0.0/24"
disk_size	Disk size.	number		50
disk_type	Disk type.	string		"pd-ssd"
image	Image.	string		"projects/windows-cloud/global/images/family/windows-2022"
instance_type	Instance type.	string		"n1-standard-2"
network_config	Network configuration.	object({…})		null
project_create	Parameters for the creation of the new project.	object({…})		null
region	Region.	string		"europe-west1"
subnet_ip_cidr_block	Subnet IP CIDR block.	string		"10.0.1.0/28"
zone	Zone.	string		"europe-west1-c"

Outputs

name	description	sensitive
ip_address	IP address.

Test

module "test" {
  source = "./fabric/blueprints/cloud-operations/adfs"
  prefix = "test"
  project_create = {
    billing_account_id = "12345-12345-12345"
    parent             = "folders/123456789"
  }
  project_id           = "project-1"
  ad_dns_domain_name   = "example.com"
  adfs_dns_domain_name = "adfs.example.com"
}
# tftest modules=5 resources=20