This project uses Quarkus, the Supersonic Subatomic Java Framework to create a Kubernetes Operator following @Alex Soto cheat sheet Writing a Kubernetes Operator in Java
If you want to learn more about Quarkus, please visit its website: https://quarkus.io/ .
You can run your application in dev mode that enables live coding using:
./mvnw quarkus:dev
The application can be packaged using ./mvnw package.
It produces the pizza-operator-1.0-SNAPSHOT-runner.jar file in the /target directory.
Be aware that it’s not an über-jar as the dependencies are copied into the target/lib directory.
The application is now runnable using java -jar target/pizza-operator-1.0-SNAPSHOT-runner.jar.
You can create a native executable using: ./mvnw package -Pnative.
Or, if you don't have GraalVM installed, you can run the native executable build in a container using: ./mvnw package -Pnative -Dquarkus.native.container-build=true.
You can then execute your native executable with: ./target/pizza-operator-1.0-SNAPSHOT-runner
If you want to learn more about building native executables, please consult https://quarkus.io/guides/building-native-image.
By default, Pods in Kubernetes do not have the permission to list other pods. Therefore, we need to create a cluster role, a service account, and a cluster role binding.
kubectl apply -f k8s_files/operator.clusterrole.yaml
kubectl apply -f k8s_files/operator.serviceaccount.yaml
kubectl apply -f k8s_files/operator.clusterrolebinding.yaml
Now you can run the kubectl apply -f k8s_files/operator.crd.yaml command to register the CRD in the cluster.
Run the kubectl apply -f k8s_files/operator.deployment.yaml command to register the operator.
Apply the custom resource by running: kubectl apply -f meat-pizza.yaml and check the output of
kubectl get pods command.
> k get pods
NAME READY STATUS RESTARTS AGE
meats-pod 0/1 Completed 0 7m10s
quarkus-operator-example-554b8f45fc-mcgqn 1/1 Running 0 7m25s
If you check the log in the meats-pod you can see how the Operator created and delivered our pizza ;-)
│ __ ____ __ _____ ___ __ ____ ______ │
│ --/ __ \/ / / / _ | / _ \/ //_/ / / / __/ │
│ -/ /_/ / /_/ / __ |/ , _/ ,< / /_/ /\ \ │
│ --\___\_\____/_/ |_/_/|_/_/|_|\____/___/ │
│ 2020-05-21 14:17:32,324 INFO [io.quarkus] (main) pizza-maker 1.0-SNAPSHOT (powered by Quarkus 1.4.0.CR1) started in 0.027s. │
│ 2020-05-21 14:17:32,324 INFO [io.quarkus] (main) Profile prod activated. │
│ 2020-05-21 14:17:32,324 INFO [io.quarkus] (main) Installed features: [cdi] │
│ Doing The Base │
│ Adding Sauce bbq │
│ Adding Toppings [mozzarella,pepperoni,tuna,mushrooms] │
│ Baking │
│ Baked │
│ Ready For Delivery │
│ 2020-05-21 14:17:32,825 INFO [io.quarkus] (main) pizza-maker stopped in 0.001s │
│