Helm: Dependency management
2 min read | by Jordi Prats
We can define dependencies you our helm charts using the dependencies key on the Chart.yaml file:
(...) dependencies: - name: gatekeeper version: "3.9.0" repository: "https://open-policy-agent.github.io/gatekeeper/charts" If we try to install this helm chart we'll get an error when the dependencies are not downloaded yet:
$ helm install example -n demons example Error: INSTALLATION FAILED: An error occurred while checking for chart dependencies. You may need to run `helm dependency build` to fetch missing dependencies: found in Chart.yaml, but missing in charts/ directory: gatekeeper To be able to download dependencies we'll need to add the repositories:
helm repo add gatekeeper https://open-policy-agent.github.io/gatekeeper/charts To finally fetch the helm charts:
$ helm dependency build example/ Hang tight while we grab the latest from your chart repositories... ...Successfully got an update from the "gatekeeper" chart repository Update Complete. ⎈Happy Helming!⎈ Saving 1 charts Downloading gatekeeper from repo https://open-policy-agent.github.io/gatekeeper/charts Deleting outdated charts The downloaded packages will be stored on the charts directory:
$ ls example/charts/ gatekeeper-3.9.0.tgz It will create (or update) the Chart.lock file with the digest hash:
dependencies: - name: gatekeeper repository: https://open-policy-agent.github.io/gatekeeper/charts version: 3.9.0 digest: sha256:9f4bc6703e2d17986a956c3ba28a4514e8f881421c2304a262223575598e53a3 generated: "2022-09-30T19:41:47.706214+02:00" Posted on 03/10/2022