SaifRehman/nodejs-tekton-openshift

nodejs-tekton-openshift

This guide is to run a sample application on openshift cluster using tekton

Prereq

• Install Tekton

1. Navigate to Operator Hub
2. Search tekton
3. Subscribe and Install

Deploy a sample nodejs application using tekton

1. clone the repo

$ git clone https://github.com/SaifRehman/nodejs-tekton-openshift.git

2. Navigate to the directory

$ cd nodejs-tekton-openshift

• in kubernetes folder you have all kubernetes artifacts
• in tekton folder you have tekton configuration
• tekton/resources.yaml specified git repo and private images repo
• tekton/task.yaml specifies all the tasks, such as build push and deploy. each tasks has specific steps
• tekton/pipeline.yaml configures pipeline and specifies what tasks to run
• tekton/pipelinerun.yaml Runs the given pipeline

3. Configure secret

• Create docker.config.json

$ touch docker.config.json

• populate with the following data

{
  "auths": {
    "docker-registry.default.svc.cluster.local:5000": {
      "auth": "c2E6ZXlKaGJHY2lPaUp<...skipped many lines ...>"
    }
  }
}

• auth entry needs to change
• get secret

$ secret=$(oc get secret  | grep pipeline-token | head -1 | awk '{print $1}')

• get token

$ token=$(oc get secret $secret -o jsonpath="{.data.token}")

token=$(echo $token | base64 --decode)

echo "sa:$token" | base64

• copy it and paste it in auth

• Create a docker secret

$ oc create configmap docker-config --from-file=config.json=docker.config.json

4. Apply tekton yaml

$ oc apply -f resources.yaml
$ oc apply -f task.yaml
$ oc apply -f pipeline.yaml
$ oc apply -f pipelinerun.yaml

5. Open openshift dashboard and navigate to pipeline and then pipeline run to see the running pipeline

ew