helm: Helm lint Does Not Support Same Arguments as Install/Upgrade

What keywords did you search in Kubernetes issues before filing this one? (If you have found any duplicates, you should instead reply there.): lint, --set, --namespace, --value

Is this a BUG REPORT or FEATURE REQUEST? (choose one): FEATURE REQUEST

Helm version (use helm version): Client: &version.Version{SemVer:“v2.2.0”, GitCommit:“fc315ab59850ddd1b9b4959c89ef008fef5cdf89”, GitTreeState:“clean”} Server: &version.Version{SemVer:“v2.2.0”, GitCommit:“fc315ab59850ddd1b9b4959c89ef008fef5cdf89”, GitTreeState:“clean”}

Description: helm lint should support the same set of (applicable) arguments as helm install and helm upgrade.

helm lint does not support the following arguments:

• --namespace
• --set
• --values

However helm lint does support --tiller-namespace now (thank you!), but this argument should be the same name, i.e. --namespace.

Reasons: helm lint is useful in chart development, and also in CI pipelines. However, it is very desirable to run the helm lint validation with the exact same parameters as helm install/upgrade will be run on a system.

There are circumstances where a default values.yaml file may not be complete by design. Where it is better to require the define values on the command line via --set. (I will not provide some of the cases here, as it may sidetrack the spirit of this issue).

Also, it is generally better to run the new chart automated integration/testing with the same arguments as are used in the actual install/upgrade. This guarantees that a single version of a Chart is all that is needed, vs a different default values.yaml setup specifically for helm lint.