10.3. Creating a template using Kubernetes custom actions in Red Hat Developer Hub

apiVersion: scaffolder.backstage.io/v1beta3
kind: Template
metadata:
  name: create-kubernetes-namespace
  title: Create a kubernetes namespace
  description: Create a kubernetes namespace

spec:
  type: service
  parameters:
    - title: Information
      required: [namespace, token]
      properties:
        namespace:
          title: Namespace name
          type: string
          description: Name of the namespace to be created
        clusterRef:
          title: Cluster reference
          type: string
          description: Cluster resource entity reference from the catalog
          ui:field: EntityPicker
          ui:options:
            catalogFilter:
              kind: Resource
        url:
          title: Url
          type: string
          description: Url of the kubernetes API, will be used if clusterRef is not provided
        token:
          title: Token
          type: string
          ui:field: Secret
          description: Bearer token to authenticate with
        skipTLSVerify:
          title: Skip TLS verification
          type: boolean
          description: Skip TLS certificate verification, not recommended to use in production environment, default to false
        caData:
          title: CA data
          type: string
          ui:field: Secret
          description: Certificate Authority base64 encoded certificate
        labels:
          title: Labels
          type: string
          description: Labels to be applied to the namespace
          ui:widget: textarea
          ui:options:
            rows: 3
          ui:help: 'Hint: Separate multiple labels with a semicolon!'
          ui:placeholder: 'kubernetes.io/type=namespace; app.io/managed-by=org'

  steps:
    - id: create-kubernetes-namespace
      name: Create kubernetes namespace
      action: kubernetes:create-namespace
      input:
        namespace: ${{ parameters.namespace }}
        clusterRef: ${{ parameters.clusterRef }}
        url: ${{ parameters.url }}
        token: ${{ secrets.token }}
        skipTLSVerify: ${{ parameters.skipTLSVerify }}
        caData: ${{ secrets.caData }}
        labels: ${{ parameters.labels }}