kubernetes-example

Kubernetes Example

A very simple example that demonstrates the use of @KubernetesApplication in its simplest form. Check the Main.java which bears the annotation. To access the @KubernetesApplication annotation you just need to have the following dependency in your class path:

<dependency>
  <groupId>io.ap4k</groupId>
  <artifactId>kubernetes-annotations</artifactId>
  <version>${project.version}</version>
</dependency>

Compile the project using:

mvn clean install

You can find the generated deployment under: target/classes/ap4k/kubernetes.yml that should look like:

---
apiVersion: "v1"
kind: "List"
items:
- apiVersion: "v1"
  kind: "Service"
  metadata:
    annotations: {}
    labels: {}
    name: "kubernetes-example"
  spec:
    selector:
      app: "kubernetes-example"
      version: "1.0-SNAPSHOT"
      group: "default"
    type: "ClusterIp"
- apiVersion: "apps/v1"
  kind: "Deployment"
  spec:
    replicas: 1
    selector:
      matchLabels:
        app: "kubernetes-example"
        version: "1.0-SNAPSHOT"
        group: "default"
    template:
      spec:
        containers:
        - env:
          - name: "KUBERNETES_NAMESPACE"
            valueFrom:
              fieldRef:
                fieldPath: "metadata.namespace"
          image: "kubernetes-example:1.0-SNAPSHOT"
          imagePullPolicy: "IfNotPresent"
          name: "kubernetes-example"
        nodeSelector: {}