4.4. Assembling a Pipeline

Procedure

1. Copy the contents of the following sample Pipeline YAML file and save it:

   apiVersion: tekton.dev/v1beta1
   kind: Pipeline
   metadata:
     name: build-and-deploy
   spec:
     workspaces:
     - name: shared-workspace
     params:
     - name: deployment-name
       type: string
       description: name of the deployment to be patched
     - name: git-url
       type: string
       description: url of the git repo for the code of deployment
     - name: git-revision
       type: string
       description: revision to be used from repo of the code for deployment
       default: "release-tech-preview-2"
     - name: IMAGE
       type: string
       description: image to be built from the code
     tasks:
     - name: fetch-repository
       taskRef:
         name: git-clone
         kind: ClusterTask
       workspaces:
       - name: output
         workspace: shared-workspace
       params:
       - name: url
         value: $(params.git-url)
       - name: subdirectory
         value: ""
       - name: deleteExisting
         value: "true"
       - name: revision
         value: $(params.git-revision)
     - name: build-image
       taskRef:
         name: buildah
         kind: ClusterTask
       params:
       - name: TLSVERIFY
         value: "false"
       - name: IMAGE
         value: $(params.IMAGE)
       workspaces:
       - name: source
         workspace: shared-workspace
       runAfter:
       - fetch-repository
     - name: apply-manifests
       taskRef:
         name: apply-manifests
       workspaces:
       - name: source
         workspace: shared-workspace
       runAfter:
       - build-image
     - name: update-deployment
       taskRef:
         name: update-deployment
       workspaces:
       - name: source
         workspace: shared-workspace
       params:
       - name: deployment
         value: $(params.deployment-name)
       - name: IMAGE
         value: $(params.IMAGE)
       runAfter:
       - apply-manifests

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   The Pipeline definition abstracts away the specifics of the Git source repository and image registries. These details are added as params when a Pipeline is triggered and executed.

2. Create the Pipeline:

   $ oc create -f <pipeline-yaml-file-name.yaml>

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   Alternatively, you can also execute the YAML file directly from the Git repository:

   $ oc create -f https://raw.githubusercontent.com/openshift/pipelines-tutorial/release-tech-preview-2/01_pipeline/04_pipeline.yaml

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3. Use the tkn pipeline list command to verify that the Pipeline is added to the application:

   $ tkn pipeline list

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   The output verifies that the build-and-deploy Pipeline was created:

   NAME               AGE            LAST RUN   STARTED   DURATION   STATUS
   build-and-deploy   1 minute ago   ---        ---       ---        ---

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