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Atlantis Drift Detection

Atlantis Drift Detection is a utility designed to detect drift in infrastructure managed by Atlantis. It works by comparing the infrastructure state in your version control system (GitHub, GitLab) with the actual state in your cloud provider.

Configuration

Atlantis Drift Detection requires the following environment variables to be set:

  • ATLANTIS_URL: The URL of your Atlantis instance.
  • ATLANTIS_TOKEN: The API token used to authenticate with your Atlantis instance.
  • CONFIG_PATH: The path to your VCS configuration file (in YAML format).

An API token for your Git server is also required:

  • --gitlab-token or GITLAB_TOKEN
  • --github-token or GITHUB_TOKEN

VCS Configuration File

The VCS configuration file should have the following format:

github:
  apiEndpoint: https://api.mygithubserver.com
  token: github_token
  repos:
    - ref: main
      name: user/repo1
    - ref: master
      name: user/repo2
gitlab:
  apiEndpoint: https://gitlab.com/api/v4
  token: gitlab_token
  repos:
    - ref: main
      name: user/repo3

Usage

  1. Clone the repository:
git clone https://github.com/yourusername/atlantis-drift-detection.git
cd atlantis-drift-detection
  1. Build the project:
go build -o atlantis-drift-detection
  1. Set the required environment variables:
export ATLANTIS_URL=https://your-atlantis-url.com
export ATLANTIS_TOKEN=your-atlantis-token
export CONFIG_PATH=/path/to/your/config.yaml
  1. Run the program:
./atlantis-drift-detection --github-token $SOME_TOKEN --gitlab-token $SOME_TOKEN