unable install about helm-charts

[feikesteenbergen]

Could not readily reproduce in the following environment:

$ minikube version
minikube version: v1.5.2
commit: 792dbf92a1de583fcee76f8791cff12e0c9440ad-dirty
minikube version: v1.5.2

$ kubectl version --short
Client Version: v1.16.1
Server Version: v1.16.2

$ helm version
Client: &version.Version{SemVer:"v2.16.1", GitCommit:"bbdfe5e7803a12bbdf97e94cd847859890cf4050", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.16.1", GitCommit:"bbdfe5e7803a12bbdf97e94cd847859890cf4050", GitTreeState:"clean"}

Although indeed, the defaultMode is not part of EmptyDir. We'll remove that from the templates, however it would be great if we can reproduce this to ensure we don't run into similar issues.

[feikesteenbergen]

Was able to reproduce using Helm 2.14.0:

$ helm version
Client: &version.Version{SemVer:"v2.14.0", GitCommit:"05811b84a3f93603dd6c2fcfe57944dfa7ab7fd0", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.14.0", GitCommit:"05811b84a3f93603dd6c2fcfe57944dfa7ab7fd0", GitTreeState:"clean"}

The issue seems to be Helm related, in that it validate the schema in 2.14.0 only, it was reverted in 2.14.1:

helm/helm#5750

[feikesteenbergen]

@acteq we released https://github.com/timescale/timescaledb-kubernetes/releases/tag/v0.3.0, which should include a fix for this problem.