Reference Helm chart by URL

[bastianeicher]

With Helm I can reference a chart via an absolute URL instead of using the repository/chart syntax. For example:

helm install https://github.com/arangodb/kube-arangodb/releases/download/0.3.11/kube-arangodb-crd.tgz

However helmfile seems to interpret the URL as a local path if I write this in my helmfile.yaml:

releases:
  - name: arangodb-crd
    chart: https://github.com/arangodb/kube-arangodb/releases/download/0.3.11/kube-arangodb-crd.tgz

Would it be possible to support this helmfile too?

[mumoshu]

@bastianeicher Thanks for the request! Yeah probably. It should work if the URL can be accepted as the first arg to helm fetch, helm upgrade, helm diff, etc. that helmfile calls.

Helmfile has not expected URLs in chart. So maybe it's matter of relaxing the validation if it fails due to that?

[robinro]

This used to work. The example helmfile given by @bastianeicher used to work with helmfile. Based on my quick bisect running helmfile diff using that helmfile the first broken version is c9a43ad

@mumoshu If you are interested I could try to work on a fix. Can you give me some hints?

[mumoshu]

@robinro Good catch! Seems like I've unintentionally broken this along with #687 in the commit you pointed.

Not sure which part of my commit went wrong I'll take a look and report back once I find something.

[mumoshu]

Okay so it seems to be caused by helmfile calling helm dep build on the remote chart uri. Looking deeper now..

$ helm dependency build https://github.com/arangodb/kube-arangodb/releases/download/0.3.11/kube-arangodb-crd.tgz
Error: could not find https://github.com/arangodb/kube-arangodb/releases/download/0.3.11/kube-arangodb-crd.tgz: stat https://github.com/arangodb/kube-arangodb/releases/download/0.3.11/kube-arangodb-crd.tgz: no such file or directory

[robinro]

Thanks @mumoshu