OCP Tekton Demo Test App

Prerequisites

• Code Ready Containers CRC (Can be replaced by any other RedHat OCP cluster)
• OC CLI - https://docs.openshift.com/container-platform/4.8/cli_reference/openshift_cli/getting-started-cli.html
• Tekton CLI - https://tekton.dev/vault/cli-v0.21.0/
• Helm CLI - https://helm.sh/docs/intro/install/

References

• Tekton Hub: https://hub.tekton.dev/
• Tekton Docu: https://tekton.dev/docs/pipelines/

Prepare local Env (CRC)

In your shell:

  crc setup
  crc start --memory 16000 --disk-size 50 --cpus 8

Create OCP project

In your shell:

oc new-project tekton-demo

https://github.com/tektoncd/catalog/tree/main/task/buildah

Install Tekton Community Tasks

In your shell:

  tkn hub install task git-clone
  tkn hub install task buildah
  tkn hub install task kaniko
  tkn hub install task openshift-client

If using Helm for deployment:

  tkn hub install task helm-upgrade-from-source

Add Repo to OCP

Create file repo.yaml with content:

  apiVersion: pipelinesascode.tekton.dev/v1alpha1
  kind: Repository
  metadata:
    name: git-ocp-test-git
    namespace: tekton-demo
  spec:
    url: 'https://github.com/majoferenc/ocp-test.git'

Create Container Registry Secret

Set default values for CRC

Bash:

  CRC_REGISTRY_SERVER=default-route-openshift-image-registry.apps-crc.testing
  CRC_USERNAME=kubeadmin
  CRC_PASSWORD=$(oc whoami -t)
  [email protected]
  CRC_SECRET_NAME=docker-credentials

Powershell:

  $CRC_REGISTRY_SERVER = "default-route-openshift-image-registry.apps-crc.testing"
  $CRC_USERNAME = "kubeadmin"
  $CRC_PASSWORD = (oc whoami -t)
  $CRC_EMAIL = "[email protected]"
  $CRC_SECRET_NAME = "docker-credentials"

Create a Docker-registry secret for CRC

Bash:

  oc create secret docker-registry $CRC_SECRET_NAME \
      --docker-server=$CRC_REGISTRY_SERVER \
      --docker-username=$CRC_USERNAME \
      --docker-password=$CRC_PASSWORD \
      --docker-email=$CRC_EMAIL

Powershell:

  oc create secret docker-registry $CRC_SECRET_NAME `
  --docker-server=$CRC_REGISTRY_SERVER `
  --docker-username=$CRC_USERNAME `
  --docker-password=$CRC_PASSWORD `
  --docker-email=$CRC_EMAIL

Link the secret to the default service account in the crc namespace

  oc secrets link default -n tekton-demo $CRC_SECRET_NAME --for=pull

Import needed images

  oc import-image ubi8/openjdk-8:1.18-2 --from=registry.access.redhat.com/ubi8/openjdk-8:1.18-2 --confirm

Allow deployment from tekton pipeline

  oc policy add-role-to-user edit -z default -n tekton-demo

Create Pipeline

  oc apply -f .tekton/pipeline.yaml

Trigger Pipeline Run

  oc create -f .tekton/pipelinerun.yaml

Configure auto trigger after commit in git

  oc apply -f .tekton/push.yaml

Create Default Helm Template

  helm create testapp-chart

Testing Helm Chart by installing it manually

  helm upgrade --install testapp ./helm/testapp-chart/