How do I enforce policy-as-code for Helm best practices using OPA and Conftest?

Enforcing policy-as-code for Helm best practices using Open Policy Agent (OPA) and Conftest allows organizations to automate compliance checks and improve the reliability of their Helm charts. By defining policies as code, teams can ensure that their deployments adhere to best practices, resulting in more secure and efficient software delivery.

To get started, you can set up OPA to evaluate Helm charts against your defined policies, while Conftest will help you test the Helm templates in your CI/CD pipeline.

Here's an example of how to enforce a policy that checks if the `image` field is specified in your Helm Chart's `values.yaml`:

package helm deny[{"msg": msg}] { input.kind == "HelmRelease" not input.spec.values.image msg = "Image must be specified in the Helm chart" }

keyword1: "policy-as-code" keyword2: "Helm best practices" keyword3: "Open Policy Agent" keyword4: "Conftest" keyword5: "compliance"

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