PVC are not deleted when workflow fail

[holotrack]

Like in topic, how can I force to delete PVC even when workflow fail?

We're trying to use autoscaling for our GKE cluster, but we can not set it up because Google is arguing about mounted PVC volumes. argoworkflows is not deleting not used PVC from failed workflows. Is it possible to force them to be deleted even when workflow fail?

[wesleyscholl]

@holotrack

Yes it's possible using volumeClaimGC when the strategy is set to OnWorkflowCompletion. See the following functional example workflow:

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
 name: pvc-delete-on-fail-workflow
 namespace: argo
spec:
 templates:
   - name: main-task
     inputs: {}
     outputs: {}
     metadata: {}
     container:
       name: ''
       image: alpine
       command:
         - sh
         - '-c'
       args:
         - |
           exit 1 # Simulate workflow failure
       resources: {}
       volumeMounts: # Mounts the volume
         - name: workdir
           mountPath: /mnt/vol
 entrypoint: main-task
 arguments: {}
 volumeClaimTemplates: # Creates PersistentVolumeClaim
   - metadata:
       name: workdir
       creationTimestamp: null
     spec:
       accessModes:
         - ReadWriteOnce
       resources:
         requests:
           storage: 1Gi
     status: {}
 volumeClaimGC: # Garbage collection for volume claims
   strategy: OnWorkflowCompletion # Triggers on both workflow success or failure