RCA:

In the file helm/appidentityandaccessadapter/templates/ibmcloudappid.yaml in the line 9 description is set to nil causing the problem when generating the templates.

How get to issue:

1. Generate templates and split them per resource:

helm install ./helm/appidentityandaccessadapter --generate-name

csplit -f resource_ -z .out /---/ '{*}'

2. Apply each file independently, when reaching resource with the name The resource with the name resource_06` will fail with the following prompt

$ kubectl apply -f adapter_06

error: error validating "adapter_06": error validating data: unknown object type "nil" in adapter.spec.description; if you choose to ignore these errors, turn validation off with --validate=false

3. While turning validation off would help, as the message says, the issue can be solved as well changing the description from nil to empty string (""), i.e.:

from:

---
...
apiVersion: "config.istio.io/v1alpha2"
kind: adapter
metadata:
  name: appidentityandaccessadapter
  namespace: istio-system
spec:
  description: 
...

to:

...
apiVersion: "config.istio.io/v1alpha2"
kind: adapter
metadata:
  name: appidentityandaccessadapter
  namespace: istio-system
spec:
  description: ""   # <---- Empty String
...

Solution:

Replace the description in the template helm/appidentityandaccessadapter/templates/ibmcloudappid.yaml from nil to "" to have a clean helm installation.

fixes #68