For a CI/CD demo using Tekton Pipelines and Argo CD on OpenShift refer to: https://github.com/siamaksade/openshift-cicd-demo

CI/CD Demo with Tekton Pipelines

This repo is CI/CD demo using Tekton pipelines on OpenShift which builds and deploys the Spring PetClinic sample Spring Boot application. This demo creates:

3 namespaces for CI/CD, DEV and STAGE projects
2 Tekton pipelines for deploying application to DEV and promoting to STAGE environments
Gogs git server (username/password: gogs/gogs)
Sonatype Nexus (username/password: admin/admin123)
SonarQube (username/password: admin/admin)
Report repository for test and project generated reports
Imports Spring PetClinic repository into Gogs git server
Adds a webhook to spring-petclinic repository in Gogs to start the Tekton pipeline

Deploy DEV Pipeline

On every push to the spring-petclinic git repository on Gogs git server, the following steps are executed within the DEV pipeline:

Code is cloned from Gogs git server and the unit-tests are run
Unit tests are executed and in parallel the code is analyzed by SonarQube for anti-patterns, and a dependency report is generated
Application is packaged as a JAR and released to Sonatype Nexus snapshot repository
A container image is built in DEV environment using S2I, and pushed to OpenShift internal registry, and tagged with spring-petclinic:[branch]-[commit-sha] and spring-petclinic:latest
Kubernetes manifests and performance tests configurations are cloned from Git repository
Application is deployed into the DEV environment using kustomize, the DEV manifests from Git, and the application [branch]-[commit-sha] image tag built in previous steps
Integrations tests and Gatling performance tests are executed in parallel against the DEV environment and the results are uploaded to the report server

Deploy STAGE Pipeline

The STAGE deploy pipeline requires the image tag that you want to deploy into STAGE environment. The following steps take place within the STAGE pipeline:

Kubernetes manifests are cloned from Git repository
Application is deployed into the STAGE environment using kustomize, the STAGE manifests from Git, and the application [branch]-[commit-sha] image tag built in previous steps. Alternatively you can deploy the latest tag of the application image for demo purposes.
In parallel, tests are cloned from Git repository
Tests are executed against the staging environment

Deploy

Get an OpenShift cluster via https://try.openshift.com
Install OpenShift Pipelines Operator
Download OpenShift CLI and Tekton CLI

Deploy the demo

$ git clone https://github.com/siamaksade/tekton-cd-demo
$ cd tekton-cd-demo && ./demo.sh install

Start the deploy pipeline by making a change in the spring-petclinic Git repository on Gogs, or run the following:
```
$ ./demo.sh start
```

Check pipeline run logs

$ tkn pipeline logs petclinic-deploy-dev -n NAMESPACE

Troubleshooting

Why am I getting `unable to recognize "tasks/task.yaml": no matches for kind "Task" in version "tekton.dev/v1beta1"` errors?

You might have just installed the OpenShift Pipelines operator on the cluster and the operator has not finished installing Tekton on the cluster yet. Wait a few minutes for the operator to finish and then install the demo.