KubernetesManifest task doesn't accept variable for kubernetesServiceConnection

Question, Bug, or Feature?
Type: Bug

Enter Task Name: KubernetesManifest

Environment

Azure Pipelines

Issue Description

When trying to store the kubernetesServiceConnection in a variable, it doesn’t appear to resolve the variable and fails.

Task:

- task: KubernetesManifest@0
  displayName: Deploy
  inputs:
    kubernetesServiceConnection: $(KubernetesServiceConnection)
    namespace: default
    manifests: '$(Pipeline.Workspace)/service.yml'
    containers: '$(ContainerRegistry)/$(ImageName):$(Build.BuildNumber)'

This results in the error in the Error Logs section below, regardless of whether I try and include it from a variable group at the pipeline level ie this at the top of the file:

variables:

• group: myVarGroup

or from a variable group inside the stage or job, or as a direct variable in either place, ie this:

variables:

• name: KubernetesServiceConnection value: MyServiceConnectionName

If I replace the variable with the actual name, using: kubernetesServiceConnection: MyServiceConnectionName

it works as expected. Is this expected to work with variables, and if so is there anything obvious I’m doing wrong?

Task logs

Task doesn’t start so no logs

Error logs

There was a resource authorization issue: "The pipeline is not valid. Job Job1: Step input kubernetesServiceConnection references service connection $(KubernetesServiceConnection) which could not be found. The service connection does not exist or has not been authorized for use. For authorization details, refer to https://aka.ms/yamlauthz.

[CrazyTuna]

@clpalmer can you try ${{ variables.kubernetesServiceConnection }}. It is working for me. Also all my variables are defined in yaml variable files.

[sergioprates]

2022 and worked with this work around.

` jobs: - deployment: release_api displayName: Deploy API Development pool: vmImage: ‘ubuntu-latest’ environment: Development variables: - group: Group - Development # Defined variable Kubernetes.ServiceEndpointName

    strategy:
      runOnce:
        deploy:
          steps:
            - download: none
           
            - task: HelmDeploy@0
              displayName: Login in K8s
              inputs:
                connectionType: Kubernetes Service Connection
                kubernetesServiceConnection: ${{ variables.Kubernetes.ServiceEndpointName }}
                command: login`