volumes-pvc.yaml

# This example demonstrates the ability for a workflow to create a
# temporary, ephemeral volume used by the workflow, and delete it
# when the workflow completes. It uses the same volumeClaimTemplates
# syntax as statefulsets.
apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: volumes-pvc-
spec:
  entrypoint: volumes-pvc-example
  volumeClaimTemplates:
  - metadata:
      name: workdir
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 1Gi

  templates:
  - name: volumes-pvc-example
    steps:
    - - name: generate
        template: hello-world-to-file
    - - name: print
        template: print-message-from-file

  - name: hello-world-to-file
    container:
      image: busybox
      command: [sh, -c]
      args: ["echo generating message in volume; echo hello world | tee /mnt/vol/hello_world.txt"]
      volumeMounts:
      - name: workdir
        mountPath: /mnt/vol

  - name: print-message-from-file
    container:
      image: alpine:latest
      command: [sh, -c]
      args: ["echo getting message from volume; find /mnt/vol; cat /mnt/vol/hello_world.txt"]
      volumeMounts:
      - name: workdir
        mountPath: /mnt/vol