Helm upgrade failed: yaml: unmarshal errors: line 24: mapping key "app" already defined at line 23 48m

[rajivchirania]

Describe the bug

Most of my helmrelease are failing to upgrade after i moved to flux v2

To Reproduce

Steps to reproduce the behaviour:

1. Install flux v2 using terraform 0.15.3 version
2. Getting below error with kustomize
   Helm upgrade failed: error while running post render on files: map[string]interface {}(nil): yaml: unmarshal errors:
   line 24: mapping key "app" already defined at line 23

• Kubernetes version: 1.20

Below please provide the output of the following commands:

flux version 0.15.2
flux check

► checking prerequisites
✗ flux 0.15.2 <0.15.3 (new version is available, please upgrade)
✗ kubectl version v1.16.2 < >=1.18.0-0
✔ Kubernetes 1.20.4-eks-6b7464 >=1.16.0-0
► checking controllers
✔ helm-controller: deployment ready
► ghcr.io/fluxcd/helm-controller:v0.11.1
✔ kustomize-controller: deployment ready
► ghcr.io/fluxcd/kustomize-controller:v0.13.0
✔ notification-controller: deployment ready
► ghcr.io/fluxcd/notification-controller:v0.15.0
✔ source-controller: deployment ready
► ghcr.io/fluxcd/source-controller:v0.15.2


example helmrelease file:


---
apiVersion: helm.toolkit.fluxcd.io/v2beta1
kind: HelmRelease
metadata:
  name: my-app
  namespace: services
  annotations:
    fluxcd.io/automated: "false"
spec:
  interval: 5m
  releaseName: my-app
  chart:
    spec:
      chart: charts/my-app
      sourceRef:
        kind: GitRepository
        name: app-deployments
  rollback:
    timeout: 10m
    disableWait: false
  upgrade:
    timeout: 10m
    disableWait: false      
  values:
    global:
      app: 'my-app'
    labels:
      app: 'my-app'
      environment: 'platform'
      tier: 'frontend'
      version: 'v1'

[stefanprodan]

Duplicate of: fluxcd/flux2#1522

[rajivchirania]

Duplicate of: fluxcd/flux2#1522

Do we have a estimate when this will be fixed or some kind of cleaner workaround

[stefanprodan]

@rajivchirania the only fix it to remove duplicate keys from your chart.