subpath-and-tekton.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: task-pv-volume
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 16Mi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data"
---

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: shared-task-storage
spec:
  storageClassName: manual
  resources:
    requests:
      storage: 16Mi
  accessModes:
    - ReadWriteOnce
---

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: write-data
spec:
  workspaces:
    - name: storage
      mountPath: /mnt/data
  steps:
    - name: write-data
      image: bash:latest
      script: |
        #!/usr/bin/env bash
        echo -n "hello" | tee $(workspaces.storage.path)/hello.txt
        echo -e "\n"
        echo $(workspaces.storage.path)
        echo -e "\n"
        ls $(workspaces.storage.path)
---

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: read-data
spec:
  workspaces:
    - name: storage
      mountPath: /mnt/data
  steps:
    - name: read-data
      image: bash:latest
      script: |
        #!/usr/bin/env bash
        cat $(workspaces.storage.path)/hello.txt
        echo -e "\n"
        echo $(workspaces.storage.path)
        echo -e "\n"
        ls $(workspaces.storage.path)
---

apiVersion: tekton.dev/v1beta1
kind: Pipeline
metadata:
  name: pipeline-with-subpath
spec:
  workspaces:
    - name: shared-data
  tasks:
    - name: write-data
      taskRef:
        name: write-data
      workspaces:
        - name: storage
          workspace: shared-data
    - name: read-data
      taskRef:
        name: read-data
      runAfter:
        - write-data
      workspaces:
        - name: storage
          workspace: shared-data
---

apiVersion: tekton.dev/v1beta1
kind: PipelineRun
metadata:
  generateName: pipelinerun-with-subpath-
spec:
  pipelineRef:
    name: pipeline-with-subpath
  workspaces:
    - name: shared-data
      subPath: data
      persistentVolumeClaim:
        claimName: shared-task-storage
---