Add CRD first steps

Author: mms-gianni

k8s/crd/application.yaml

@@ -0,0 +1,39 @@
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  # name must match the spec fields below, and be in the form: <plural>.<group>
+  name: applications.alpha.keroku.com
+spec:
+  # group name to use for REST API: /apis/<group>/<version>
+  group: alpha.keroku.com
+  # list of versions supported by this CustomResourceDefinition
+  versions:
+    - name: v1alpha
+      # Each version can be enabled/disabled by Served flag.
+      served: true
+      # One and only one version must be marked as the storage version.
+      storage: true
+      schema:
+        openAPIV3Schema:
+          type: object
+          properties:
+            spec:
+              type: object
+              properties:
+                cronSpec:
+                  type: string
+                image:
+                  type: string
+                replicas:
+                  type: integer
+  scope: Cluster
+  names:
+    # plural name to be used in the URL: /apis/<group>/<version>/<plural>
+    plural: applications
+    # singular name to be used as an alias on the CLI and for display
+    singular: application
+    # kind is normally the CamelCased singular type. Your resource manifests use this.
+    kind: Application
+    # shortNames allow shorter string to match your resource on the CLI
+    shortNames:
+    - app

k8s/examples/application.yaml

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+apiVersion: "alpha.keroku.com/v1alpha"
+kind: Application
+metadata:
+  name: my-new-app-object
+spec:
+  cronSpec: "* * * * */5"
+  image: my-awesome-cron-image