Want to deploy ACK controllers from helm repository

[nab-gha]

Is your feature request related to a problem?
Although #461 and #550 are closed I still can't work out how to access the helm repository that the ACK controller helm charts are deployed to.

Describe the solution you'd like
Be able to do helm repo add to get access to helm charts. My actual preferred approach is to create a 'helmrepositories.source.toolkit.fluxcd.io' custom resource that can be used to install ACK controllers using the Flux2 Helm-Controller.

Describe alternatives you've considered
Alternative is to reference the helm charts directory in the github repo for each ACK controller

[vijtrip2]

Helm repo is setup and functional. Are you exporting following variable before pulling chart? export HELM_EXPERIMENTAL_OCI=1

Please see this doc which installs ACK controllers using Helm.

And looks like the support for OCI charts is yet not present in fluxcd, but the issue is open.
fluxcd/source-controller#124

[dervos]

A workaround is possible by using the GitRepository source kind instead of HelmRepository:

apiVersion: source.toolkit.fluxcd.io/v1beta1
kind: GitRepository
metadata:
  name: s3-controller
spec:
  interval: 1h0m0s
  ref:
    tag: v0.0.3
  url: https://github.com/aws-controllers-k8s/s3-controller

And referencing the chart location in the helm release:

apiVersion: helm.toolkit.fluxcd.io/v2beta1
kind: HelmRelease
metadata:
  name: ack-s3-controller
spec:
  releaseName: ack-s3-controller
  chart:
    spec:
      chart: ./helm/
      sourceRef:
        kind: GitRepository
        name: s3-controller

Keep in mind that you're now relying on the referenced repositories versioning instead of referencing the helm version in your HelmRelease, which can have unexpected side-effects.

[vijtrip2]

@dervos , very good suggestion.
I want to add one thing to your suggestion. main branch can have breaking changes so in the url you can specify the exact source release like https://github.com/aws-controllers-k8s/s3-controller/tree/v0.0.3 , and it will be identical to pulling the helm OCI chart from public ecr repo.

[dervos]

@vijtrip2: I would recommend against referencing the specific version using the URL. GitRepository references the specific version using spec.ref.tag for git tags. Documentation: https://fluxcd.io/docs/components/source/api/#source.toolkit.fluxcd.io/v1beta1.GitRepositoryRef

[vijtrip2]

Please reopen if the suggestion from @dervos does not fix your problem.