* Configure Binary Authorization:
* Binary Authorization is a deploy-time security control that ensures only trusted container images are deployed on GKE. It uses attestations to verify the authenticity and integrity of the images.
* Enable Binary Authorization in your project through the Google Cloud Console or using the gcloud command-line tool.
* Define attestation policies that specify which attestors (trusted entities) must sign off on container images before deployment.
* Set Up Attestors:
* Create and configure attestors that will sign the container images. This involves generating cryptographic keys and setting up trusted authorities.
* Attestors can be configured to sign images based on criteria such as vulnerability scanning results, compliance checks, and other security policies.
* Create a Custom Organization Policy Constraint:
* Define an organization policy constraint that enforces Binary Authorization across your GKE clusters.
* This custom constraint ensures that all clusters in the organization must adhere to the Binary Authorization policy, preventing the deployment of unsigned or unauthorized container images.
* Implement and Enforce the Policies:
* Apply the Binary Authorization policy and the organization policy constraint to your GKE clusters.
* Regularly review and update the policies and attestation rules to align with your security and compliance requirements.
References:
* Binary Authorization Documentation
* Creating Attestors
* Organization Policy Constraints