CODEWITHSUNDEEP
kuberneteskubernetes-helm
zappa
zappa

Reputation: 336

Can not override value with helm template/lint using --set

I have a Helm Chart that looks like this:

apiVersion: v1
name: my-app
version: 1.0-123.4b3k32

I am trying to use helm template (or lint, it doesn't matter, they both throw the same error). With helm2 this wasn't a problem, but with helm3, it is complaining that

Error: validation: chart.metadata.version "1.0-304.0770996" is invalid

Now when executing helm template, I want to override this value using

helm template --set chart.metadata.version='0.0.0'

but I keep getting the same error, what am I doing wrong here?

Changing it in the Chart itself is not an option. I tested by changing it manually to 0.0.0 to see if it works and it does. Setting it to 0.0.0 during templating would be fine for me.

Upvotes: 1

Views: 2284

Answers (1)

David Maze
David Maze

Reputation: 158748

The Chart.yaml version: field is specified to be a semantic version; quoting the Helm documentation, "non-SemVer names are explicitly disallowed by the system." SerVer's rule 2 is:

A normal version number MUST take the form X.Y.Z where X, Y, and Z are non-negative integers....

So changing the chart version to 1.0.0-456.a1b2c3d might resolve this problem. (SerVer rule 9 allows the -456... suffix to indicate a pre-release version but all of its examples have three-part versions before the hyphen.)

There is no way to override these Chart.yaml values with helm install or related commands. In particular helm install --set provides overrides to the values.yaml file, what template code sees as .Values.

Upvotes: 1

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