Tektoncd development

• go : installation depends on your operating system
• ko : go get -u github.com/google/go-containerregistry/cmd/ko
• kubernetes
  • minikube
  • minishift
  • …

We need to configure ko (using KO_DOCKER_REPO) so that it can deploy the working copy code into our development cluster.

• minikube (or minishift) with docker as container runtime

  1. Make sure your local docker command-line points to the VM daemon

     eval $(minikube docker-env)
     # eval $(minishift docker-env) # for minishift
     

  2. Use ko.local as KO_DOCKER_REPO — it’s a special case handled by ko

     export KO_DOCKER_REPO=ko.local
     

• for any cluster using another runtime (or a remote cluster), you need to use a registry that will be accessible from the cluster (gcr.io or your own – the docker hub doesn’t work with ko).

1. tektoncd/pipeline needs to sit on the right place in your GOPATH

   $ echo $GOPATH
   /home/vincent
   $ pwd
   /home/vincent/src/github.com/tektoncd/pipeline
   

2. Deploy 💃

   $ ko apply -f ./config
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/webhook
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/gsutil
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/controller
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/nop
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/creds-init
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/git-init
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/kubeconfigwriter
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/bash
   2019/03/13 10:49:22 Building github.com/tektoncd/pipeline/cmd/entrypoint
   namespace/tekton-pipelines created
   clusterrole.rbac.authorization.k8s.io/tekton-pipelines-admin created
   serviceaccount/tekton-pipelines-controller created
   clusterrolebinding.rbac.authorization.k8s.io/tekton-pipelines-controller-admin created
   2019/03/13 10:49:23 Using base index.docker.io/library/busybox:latest for github.com/tektoncd/pipeline/cmd/entrypoint
   2019/03/13 10:49:23 Using base gcr.io/distroless/static:latest for github.com/tektoncd/pipeline/cmd/nop
   # […]
   deployment.apps/tekton-pipelines-controller created
   deployment.apps/tekton-pipelines-webhook created
   

3. Enjoy 🔥

   $ kubectl get all -n tekton-pipelines
   NAME                                               READY     STATUS    RESTARTS   AGE
   pod/tekton-pipelines-controller-5875857cf5-k9njx   1/1       Running   0          3m18s
   pod/tekton-pipelines-webhook-54785c88f4-jbkqr      1/1       Running   0          3m18s
   
   NAME                                  TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)    AGE
   service/tekton-pipelines-controller   ClusterIP   10.104.145.40   <none>        9090/TCP   4m31s
   service/tekton-pipelines-webhook      ClusterIP   10.97.9.56      <none>        443/TCP    4m31s
   
   NAME                                          READY     UP-TO-DATE   AVAILABLE   AGE
   deployment.apps/tekton-pipelines-controller   1/1       1            1           3m18s
   deployment.apps/tekton-pipelines-webhook      1/1       1            1           3m18s
   
   NAME                                                     DESIRED   CURRENT   READY     AGE
   replicaset.apps/tekton-pipelines-controller-5875857cf5   1         1         1         3m18s
   replicaset.apps/tekton-pipelines-webhook-54785c88f4      1         1         1         3m18s
   

Let’s validate it works by running a simple example

apiVersion: tekton.dev/v1alpha1
kind: Task
metadata:
  name: build-simple
spec:
  steps:
  - name: build-simple
    image: docker.io/library/busybox
    command:
    - /bin/sh
    args:
    - -c
    - "echo hello world"
---
apiVersion: tekton.dev/v1alpha1
kind: TaskRun
metadata:
  name: build-simple
spec:
  taskRef:
    name: build-simple
  trigger:
    type: manual

$ kubectl apply -f ./test.yaml
task.tekton.dev/build-simple created
taskrun.tekton.dev/build-simple created

Let’s now look at what’s in our namespace

$ kubectl get all
NAME                          READY     STATUS      RESTARTS   AGE
pod/build-simple-pod-ada879   0/2       Completed   0          10s

NAME                 TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
service/kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   26m

NAME                           AGE
task.tekton.dev/build-simple   10s

NAME                              AGE
taskrun.tekton.dev/build-simple   10s