Add debug message #4
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| --- | |
| # The runner's playground namespace can be used to deploy a virtual cluster | |
| # with vcluster. The vcluster behaves as a full fledged Kubernetes cluster on | |
| # which the runner is admin. Namespaces, Custom Resource Definitions and other | |
| # cluster-scope resources can be created. | |
| # | |
| # Deploying the vcluster in the playground namespaces requires including a few | |
| # steps at the beginning of the workflow. This file provides an example | |
| # workflow that deploys a vcluster and uses it to deploy a basic application. | |
| # In addition, it shows how to use the local docker registry, which is also | |
| # accessible from the vcluster. | |
| name: vcluster_example | |
| on: | |
| push: | |
| workflow_dispatch: | |
| jobs: | |
| build: | |
| name: Build image | |
| runs-on: [self-hosted, v3] | |
| steps: | |
| - name: Build fink-broker image for k8s | |
| run: | | |
| docker pull busybox | |
| docker tag busybox docker-registry.docker-registry:5000/busybox:latest | |
| docker push docker-registry.docker-registry:5000/busybox:latest | |
| use_vcluster: | |
| runs-on: [self-hosted, v3] | |
| ### --- Include the steps below in your workflow to create a vcluster. | |
| env: | |
| # The runner pods set the playground namespace as default for kubectl. | |
| # Since the playground namespace won't exist on the vcluster, set the | |
| # default kubectl namespace to "default". | |
| POD_NAMESPACE: "default" | |
| # The steps below create a manifest file for a secret that contains the | |
| # local docker registry certificate. This makes it easier to inject it in | |
| # the vcluster namespaces if necessary. | |
| REGISTRY_CA_MANIFEST: "/tmp/registry-ca-manifest.yaml" | |
| steps: | |
| # Helm is necessary for vcluster. | |
| - name: Install helm | |
| shell: bash | |
| run: | | |
| tmpdir="$(mktemp -d)" | |
| ( | |
| cd "${tmpdir}" | |
| curl -Lo helm.tar.gz \ | |
| https://get.helm.sh/helm-v3.12.1-linux-amd64.tar.gz | |
| tar -xvzf helm.tar.gz | |
| install linux-amd64/helm "${HOME}/.local/bin" | |
| ) | |
| rm -r "${tmpdir}" | |
| - name: Install vcluster | |
| shell: bash | |
| run: | | |
| tmpdir="$(mktemp -d)" | |
| ( | |
| cd "${tmpdir}" | |
| curl -L -o vcluster "https://github.com/loft-sh/vcluster/releases/download/v0.18.0/vcluster-linux-amd64" | |
| install vcluster "${HOME}/.local/bin" | |
| ) | |
| rm -r "${tmpdir}" | |
| - name: Deploy the virtual cluster | |
| shell: bash | |
| run: | | |
| tmpvalues="$(mktemp)" | |
| cat > "${tmpvalues}" << VALUES | |
| mapServices: | |
| fromHost: | |
| - from: docker-registry/docker-registry | |
| to: docker-registry/docker-registry | |
| VALUES | |
| # Create a manifest file to deploy the registry certificate in | |
| # namespaces of the vcluster that need it with: | |
| # `kubectl apply -f "${REGISTRY_CA_MANIFEST}" -n <namespace>` | |
| cat > "${REGISTRY_CA_MANIFEST}" << MANIFEST | |
| apiVersion: v1 | |
| data: | |
| ca.crt: $(base64 -w0 '/registry-ca/docker-registry.docker-registry:5000/ca.crt') | |
| kind: Secret | |
| metadata: | |
| name: registry-ca | |
| MANIFEST | |
| vcluster create "$(hostname)" \ | |
| --connect=false --namespace="$(hostname)" \ | |
| --extra-values="${tmpvalues}" --chart-name=vcluster | |
| echo "Connect to the vcluster" | |
| vcluster connect "$(hostname)" \ | |
| --namespace="$(hostname)" --server="$(hostname).$(hostname)" | |
| ### --- At this point, a vcluster is deployed and kubectl is configured to | |
| ### --- create resources in it. You can replace everything below by your own | |
| ### --- workflow steps. | |
| ### --- The steps below deploy a simple application in the vcluster. | |
| - name: Create a deployment | |
| shell: bash | |
| run: | | |
| kubectl create deployment hello-node \ | |
| --image=registry.k8s.io/e2e-test-images/agnhost:2.39 \ | |
| -- /agnhost netexec --http-port=8080 | |
| sleep 10s | |
| kubectl get deployments | |
| kubectl get pods | |
| - name: Create a service | |
| shell: bash | |
| run: | | |
| kubectl expose deployment hello-node --type=LoadBalancer --port=8080 | |
| sleep 60s | |
| kubectl get services | |
| HELLO_NODE_ADDRESS=$(kubectl get service hello-node -o jsonpath={.spec.clusterIP}) | |
| HELLO_NODE_PORT=$(kubectl get service hello-node -o jsonpath={.spec.ports[].port}) | |
| curl "${HELLO_NODE_ADDRESS}:${HELLO_NODE_PORT}" | |
| - name: Create a pod using local registry | |
| shell: bash | |
| run: | | |
| kubectl run hello-pod --image=docker-registry.docker-registry:5000/busybox:latest --restart=Never -- /bin/sh -c "echo Hello from the vcluster! && sleep 3600s" | |
| sleep 10s | |
| kubectl get pods | |
| kubectl logs hello-pod | |
| ### --- The steps below deploy a docker-in-docker pod to show how to use the | |
| ### --- docker registry of the host cluster from within the vcluster. | |
| - name: Test the docker registry | |
| shell: bash | |
| run: | | |
| poddef="$(mktemp)" | |
| # Create a docker-in-docker pod with the local docker registry | |
| # certificate mounted from a secret. | |
| cat > "${poddef}" << PODDEF | |
| apiVersion: v1 | |
| kind: Pod | |
| metadata: | |
| name: dind | |
| spec: | |
| restartPolicy: Always | |
| containers: | |
| - image: docker:dind | |
| imagePullPolicy: IfNotPresent | |
| name: dind | |
| securityContext: | |
| privileged: true | |
| volumeMounts: | |
| - mountPath: /etc/docker/certs.d | |
| name: registry-ca | |
| readOnly: true | |
| volumes: | |
| # Define a volume from the Secret holding the registry | |
| # certificate. We have to provide the mount path here because | |
| # the mountPath field of the volumeMounts structure does no | |
| # support colons in path. | |
| # See https://github.com/kubernetes/kubernetes/issues/93479. | |
| - name: registry-ca | |
| secret: | |
| secretName: registry-ca | |
| items: | |
| - key: ca.crt | |
| path: docker-registry.docker-registry:5000/ca.crt | |
| PODDEF | |
| # Inject the registry certificate in the default namespace. | |
| kubectl apply -f "${REGISTRY_CA_MANIFEST}" -n default | |
| # Create a docker-in-docker pod to test the registry. | |
| kubectl apply -f "${poddef}" -n default | |
| # Wait for the pod to be created. | |
| kubectl wait --for=condition=Ready -f "${poddef}" -n default | |
| # Wait a bit more, just in case... | |
| sleep 10s | |
| # Push an image from docker hub. | |
| kubectl exec -n default dind -- docker pull hello-world | |
| # Retag and push it to the local registry. | |
| kubectl exec -n default dind -- docker tag hello-world:latest \ | |
| docker-registry.docker-registry:5000/my-hello-world:1.0 | |
| kubectl exec -n default dind -- docker push \ | |
| docker-registry.docker-registry:5000/my-hello-world:1.0 | |
| # Remove all local references to the image. | |
| kubectl exec -n default dind -- docker rmi hello-world:latest \ | |
| docker-registry.docker-registry:5000/my-hello-world:1.0 | |
| # Pull it again from the local registry. | |
| kubectl exec -n default dind -- docker pull \ | |
| docker-registry.docker-registry:5000/my-hello-world:1.0 | |
| # This step is not strictly necessary. When the runner pod exits, the | |
| # playground namespace and hence to whole vcluster are destroyed. | |
| # However, it is good practice to clean you own mess (｀・ω・´)”. | |
| - name: Clean up | |
| shell: bash | |
| run: | | |
| kubectl delete all --all | |
| sleep 10s | |
| kubectl get pods |