08-application

Example 08: Kubernetes application (v2)

Application example: Crossplane is not only for cloud resources (S3, RDS). In v2 you can use it for normal Kubernetes applications. This example defines an XApp that creates a Deployment and a Service—a simple application in the cluster with no cloud MRs.

Same idea as 05-app-with-deployment; this folder is the dedicated application example.

Prerequisites

• Crossplane installed (v2)
• function-patch-and-transform installed
• RBAC: Crossplane must be able to create deployments and services. If not, apply rbac.yaml.

RBAC (if needed)

kubectl apply -f rbac.yaml

Apply

kubectl apply -f xrd.yaml
kubectl apply -f composition.yaml
kubectl apply -f xr.yaml

Verify

kubectl get xapp -n default
kubectl get deployment,service -n default -l crossplane.io/composite=hello-app
kubectl get pods -n default -l app=hello-app

Cleanup

kubectl delete -f xr.yaml
kubectl delete -f composition.yaml
kubectl delete -f xrd.yaml
# optionally: kubectl delete -f rbac.yaml