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Migrating From Tekton `v1alpha1` to Tekton `v1beta1`

docs/migrating-v1alpha1-to-v1beta1.md

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Migrating From Tekton v1alpha1 to Tekton v1beta1

This document describes the differences between v1alpha1 Tekton entities and their v1beta1 counterparts. It also describes how to replace the supported types of PipelineResources with Tasks from the Tekton Catalog of equivalent functionality.

Changes to fields

In Tekton v1beta1, the following fields have been changed:

Old fieldNew field
spec.inputs.paramsspec.params
spec.inputsRemoved from Tasks
spec.outputsRemoved from Tasks
spec.inputs.resourcesspec.resources.inputs
spec.outputs.resourcesspec.resources.outputs

Changes to input parameters

In Tekton v1beta1, input parameters have been moved from spec.inputs.params to spec.params.

For example, consider the following v1alpha1 parameters:

yaml
# Task.yaml (v1alpha1)
spec:
  inputs:
    params:
      - name: ADDR
        description: Address to curl.
        type: string

# TaskRun.yaml (v1alpha1)
spec:
  inputs:
    params:
      - name: ADDR
        value: https://example.com/foo.json

The above parameters are now represented as follows in v1beta1:

yaml
# Task.yaml (v1beta1)
spec:
  params:
    - name: ADDR
      description: Address to curl.
      type: string

# TaskRun.yaml (v1beta1)
spec:
  params:
    - name: ADDR
      value: https://example.com/foo.json

Replacing PipelineResources with Tasks

See "Replacing PipelineResources with Tasks" for information and examples on how to replace PipelineResources when migrating from v1alpha1 to v1beta1.

Changes to PipelineResources

In Tekton v1beta1, PipelineResources have been moved from spec.input.resources and spec.output.resources to spec.resources.inputs and spec.resources.outputs, respectively.

For example, consider the following v1alpha1 definition:

yaml
# Task.yaml (v1alpha1)
spec:
  inputs:
    resources:
      - name: skaffold
        type: git
  outputs:
    resources:
      - name: baked-image
        type: image

# TaskRun.yaml (v1alpha1)
spec:
  inputs:
    resources:
      - name: skaffold
        resourceSpec:
          type: git
          params:
            - name: revision
              value: v0.32.0
            - name: url
              value: https://github.com/GoogleContainerTools/skaffold
  outputs:
    resources:
      - name: baked-image
        resourceSpec:
          - type: image
            params:
              - name: url
                value: gcr.io/foo/bar

The above definition becomes the following in v1beta1:

yaml
# Task.yaml (v1beta1)
spec:
  resources:
    inputs:
      - name: src-repo
        type: git
    outputs:
      - name: baked-image
        type: image

# TaskRun.yaml (v1beta1)
spec:
  resources:
    inputs:
      - name: src-repo
        resourceSpec:
          type: git
          params:
            - name: revision
              value: main
            - name: url
              value: https://github.com/tektoncd/pipeline
    outputs:
      - name: baked-image
        resourceSpec:
          - type: image
            params:
              - name: url
                value: gcr.io/foo/bar