Nifi chart has no stable UUID in flow.xml in the ConfigMap

[lucasfcnunes]

I expected a stable apply/sync of the chart. The down side is that it creates lots of unnecessary revisions.

Diff (helmfile diff):

Template (it's caused by {{ default uuidv4 }} not having a stable result):

Thanks!
cetic/helm-charts#6

[banzo]

Would setting the uuids as chart values fix the issue?

Related discussion bits here: https://stackoverflow.com/questions/66143201/reuse-uuid-in-helm-charts

[lucasfcnunes]

Would setting the uuids as chart values fix the issue?

Related discussion bits here: https://stackoverflow.com/questions/66143201/reuse-uuid-in-helm-charts

Yes. It would.
At the first apply the uuid would be generated. At the second time it would be regenerated if you didn't set a uuid on your values.

Is helm capable of doing this process automatically (without setting it at values level)?

[lucasfcnunes]

@banzo

This pattern could work!

{{/* Define the secrets */}}
{{- define "kutt.secrets" -}}
---

apiVersion: v1
kind: Secret
type: Opaque
metadata:
  name: kutt-secrets
{{- $kuttprevious := lookup "v1" "Secret" .Release.Namespace "kutt-secrets" }}
{{- $jwt_secret := "" }}
data:
  {{- if $kuttprevious}}
  JWT_SECRET: {{ index $kuttprevious.data "JWT_SECRET" }}
  {{- else }}
  {{- $jwt_secret := randAlphaNum 32 }}
  JWT_SECRET: {{ $jwt_secret | b64enc }}
  {{- end }}

{{- end -}}

Source:
https://github.com/truecharts/charts/blob/2bc5a5656ac62b5078b07360c7ccc4f47c76022e/charts/incubator/kutt/templates/_secrets.tpl#L10