OpenShift Pipelines - Tekton Introduction

cat <<'EOF' > deploy-OpenShift-Pipelines.yaml
apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
  name: openshift-pipelines-operator
  namespace: openshift-operators
spec:
  channel: dev-preview
  name: openshift-pipelines-operator
  source: community-operators
  sourceNamespace: openshift-marketplace
EOF

oc create -f deploy-OpenShift-Pipelines.yaml

oc new-project pipelines-tutorial

oc get sa pipeline
NAME       SECRETS   AGE
pipeline   2         15s

cat <<'EOF' > deploy-Example-Tasks.yaml
apiVersion: tekton.dev/v1alpha1
kind: Task
metadata:
  name: apply-manifests
spec:
  inputs:
    resources:
      - {type: git, name: source}
    params:
      - name: manifest_dir
        description: The directory in source that contains yaml manifests
        type: string
        default: "k8s"
  steps:
    - name: apply
      image: quay.io/openshift/origin-cli:latest
      workingDir: /workspace/source
      command: ["/bin/bash", "-c"]
      args:
        - |-
          echo Applying manifests in $(inputs.params.manifest_dir) directory
          oc apply -f $(inputs.params.manifest_dir)
          echo -----------------------------------
---
apiVersion: tekton.dev/v1alpha1
kind: Task
metadata:
  name: update-deployment
spec:
  inputs:
    resources:
      - {type: image, name: image}
    params:
      - name: deployment
        description: The name of the deployment patch the image
        type: string
  steps:
    - name: patch
      image: quay.io/openshift/origin-cli:latest
      command: ["/bin/bash", "-c"]
      args:
        - |-
          oc patch deployment $(inputs.params.deployment) --patch='{"spec":{"template":{"spec":{
            "containers":[{
              "name": "$(inputs.params.deployment)",
              "image":"$(inputs.resources.image.url)"
            }]
          }}}}'
EOF

oc create -f deploy-Example-Tasks.yaml

tkn task ls

NAME                AGE
apply-manifests     52 seconds ago
update-deployment   52 seconds ago

cat <<'EOF' > deploy-Example-Pipeline.yaml
apiVersion: tekton.dev/v1alpha1
kind: Pipeline
metadata:
  name: build-and-deploy
spec:
  resources:
  - name: git-repo
    type: git
  - name: image
    type: image
  params:
  - name: deployment-name
    type: string
    description: name of the deployment to be patched
  tasks:
  - name: build-image
    taskRef:
      name: buildah
      kind: ClusterTask
    resources:
      inputs:
      - name: source
        resource: git-repo
      outputs:
      - name: image
        resource: image
    params:
    - name: TLSVERIFY
      value: "false"
  - name: apply-manifests
    taskRef:
      name: apply-manifests
    resources:
      inputs:
      - name: source
        resource: git-repo
    runAfter:
    - build-image
  - name: update-deployment
    taskRef:
      name: update-deployment
    resources:
      inputs:
      - name: image
        resource: image
    params:
    - name: deployment
      value: $(params.deployment-name)
    runAfter:
    - apply-manifests
EOF

oc create -f deploy-Example-Pipeline.yaml

tkn pipeline ls

NAME               AGE             LAST RUN   STARTED   DURATION   STATUS
build-and-deploy   3 seconds ago   ---        ---       ---        ---