HorizontalPodAutoscalerTrait (HPATrait) is used to create Kubernetes HorizontalPodAutoscaler for workloads on Kubernetes clusters.
- ContainerizedWorkload
- Stateful
- Deployment
Please follow addon-oam-kubernetes-local to setup oam runtime and make sure HPA is enabled on your kubernetes cluster.
If you are using minikube kubernetes, please enable mertics-server addon.
minukube addon enable metrics-server
minukube addons list
|-----------------------------|----------|--------------|
| ADDON NAME | PROFILE | STATUS |
|-----------------------------|----------|--------------|
| ambassador | minikube | disabled |
| dashboard | minikube | disabled |
| default-storageclass | minikube | enabled ✅ |
...
| metrics-server | minikube | enabled ✅ |
...
| storage-provisioner | minikube | enabled ✅ |
| storage-provisioner-gluster | minikube | disabled |
|-----------------------------|----------|--------------|
- Clone the project into your $GOPATH
https://github.com/captainroy-hy/hpatrait.git
- Load the CRD
cd hpatrait
make install
- Run the controller locally
go run main.go
- Apply the sample OAM/ApplicationConfiguration
kubectl apply -f hpatrait/config/samples
- Verify In this sample, below resources are created.
kubectl get ApplicationConfiguration
NAME AGE
example-appconfig 2m
kubectl get Component
NAME WORKLOAD-KIND
example-component ContainerizedWorkload
kubectl get deployments
NAME READY UP-TO-DATE AVAILABLE AGE
example-appconfig-workload 1/1 1 1 58m
And the HorizontalPodAutoscaler created by the HPATrait
kubectl get hpa
NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE
example-hpa-trait Deployment/example-appconfig-workload 0%/30% 1 3 1 61m