Tekton Pipeline example with Gradle

This project is example how to migrate from jenkins pipelines to the cloud native tekton CD using gradle

• GitLab
• GitHub

Why Tekton pipelines

• GitOps
• Cloud native
• Industry Standard
• Task Encapsulation

Reusable Tasks Catalog

• https://github.com/tektoncd/catalog
• https://github.com/open-toolchain/tekton-catalog
• https://cd.foundation/blog/2020/08/10/introducing-tekton-hub/

What is Included

• all tools as docker image docker exec -it dev-tools zsh

• gradle one click scripts to bootstrap local k8s cluster with Kind https://kind.sigs.k8s.io

• latest Tekton pipelines and triggers with dashboard

• Dashboard v0.8.2 http://localhost:8080/#/about

• Pipelines v0.15.1

• Triggers v0.7.0

Requirements

All tools baked inside Docker image https://github.com/dimetron/kind-tekton-gradle-example/blob/master/tools/Dockerfile

• IDE VS Code or IntelliJ (alternative gradlew CLI)
• Docker Desktop with 6 GB RAM and shared drive

Creating k8s cluster

Gradle default task all-tasks will do

• setup local cluster
• deploy tekton using kapp
• deploy tasks and pipelines
• execute pipeline using tekton pipeline-run

./gradlew

Open Dashboard k9s

docker exec -it dev-tools k9s

Using Tekton command line

docker exec -it dev-tools zsh
tkn task list

Tekton Dashboard

As part of demo repository dashboard installed with ingress

Using Tekton Plugin VS Code / IntelliJ

VS Code:

IntelliJ:

References:

• https://tekton.dev/docs/

• https://tekton.dev/docs/triggers/

• https://github.com/tektoncd/triggers/tree/master/examples/bitbucket

• https://github.com/tektoncd/triggers/tree/master/examples/gitlab

Tutorials:

• https://cloud.ibm.com/docs/ContinuousDelivery?topic=ContinuousDelivery-tekton-pipelines
• https://developer.ibm.com/technologies/devops/tutorials/build-and-deploy-a-docker-image-on-kubernetes-using-tekton-pipelines/#create-a-task-to-build-an-image-and-push-it-to-a-container-registry
• https://developer.ibm.com/tutorials/tekton-triggers-101/

Troubleshooting

in case of issues delete docker container docker rm -f dev-tools and run Gradle ./gradlew again