ansible-role-crowdstrike

This is an Ansible role for installing the CrowdStrike Falcon sensor, specifically for the CISA Continuous Diagnostics and Mitigation (CDM) environment.

Pre-requisites

In order to execute the Molecule tests for this Ansible role in GitHub Actions, a build user must exist in AWS. The accompanying Terraform code will create the user with the appropriate name and permissions. This only needs to be run once per project, per AWS account. This user can also be used to run the Molecule tests on your local machine.

Before the build user can be created, you will need a profile in your AWS credentials file that allows you to read and write your remote Terraform state. (You almost certainly do not want to use local Terraform state for this long-lived build user.) If the build user is to be created in the CISA COOL environment, for example, then you will need the cool-terraform-backend profile.

The easiest way to set up the Terraform remote state profile is to make use of our aws-profile-sync utility. Follow the usage instructions in that repository before continuing with the next steps, and note that you will need to know where your team stores their remote profile data in order to use aws-profile-sync.

To create the build user, follow these instructions:

cd terraform
terraform init --upgrade=true
terraform apply

Once the user is created you will need to update the repository's secrets with the new encrypted environment variables. This should be done using the terraform-to-secrets tool available in the development guide. Instructions for how to use this tool can be found in the "Terraform IAM Credentials to GitHub Secrets" section. of the Project Setup README.

If you have appropriate permissions for the repository you can view existing secrets on the appropriate page in the repository's settings.

Requirements

None.

Role Variables

Variable	Description	Default	Required
install_directory	The directory where the CrowdStrike Falcon sensor is installed.	/opt/CrowdStrike	No
third_party_bucket_name	The name of the AWS S3 bucket where third-party software is located.	cisa-cool-third-party-production	No

Dependencies

None.

Example Playbook

Here's how to use it in a playbook:

- hosts: all
  become: yes
  become_method: sudo
  tasks:
    - name: Include CrowdStrike Falcon sensor
      ansible.builtin.include_role:
        name: crowdstrike

Contributing

We welcome contributions! Please see CONTRIBUTING.md for details.

License

This project is in the worldwide public domain.

This project is in the public domain within the United States, and copyright and related rights in the work worldwide are waived through the CC0 1.0 Universal public domain dedication.

All contributions to this project will be released under the CC0 dedication. By submitting a pull request, you are agreeing to comply with this waiver of copyright interest.

Author Information

Shane Frasier - [email protected]