Module Scaling and Replacement
Module Scaling
To scale a module, modify the replicas field of the ModuleDeployment CR and reapply it. For example:
kubectl apply -f koupleless/module-controller/config/samples/module-deployment_v1alpha1_moduledeployment.yaml --namespace yournamespace
Replace deployment_v1alpha1_moduledeployment.yaml with the path to your ModuleDeployment definition YAML file, and yournamespace with your namespace. Here’s the complete content of module-deployment_v1alpha1_moduledeployment.yaml:
apiVersion: koupleless.alipay.com/v1alpha1
kind: ModuleDeployment
metadata:
labels:
app.kubernetes.io/name: moduledeployment
app.kubernetes.io/instance: moduledeployment-sample
app.kubernetes.io/part-of: module-controller
app.kubernetes.io/managed-by: kustomize
app.kubernetes.io/created-by: module-controller
name: moduledeployment-sample
spec:
baseDeploymentName: dynamic-stock-deployment
template:
spec:
module:
name: provider
version: '1.0.2'
url: http://koupleless.oss-cn-shanghai.aliyuncs.com/module-packages/stable/dynamic-provider-1.0.2-ark-biz.jar
replicas: 2 # Note: Modify the number of replicas here to scale the module instances
operationStrategy:
upgradePolicy: installThenUninstall
needConfirm: true
useBeta: false
batchCount: 2
schedulingStrategy: # Customize scheduling strategy here
schedulingPolicy: Scatter
If you want to customize the module deployment operation strategy (such as grouping, beta, pause, etc.), you can configure the operationStrategy and schedulingStrategy. For more details, refer to Module Deployment Operation Strategy.
The example demonstrates using kubectl, but modifying the ModuleDeployment CR directly via the K8S API server achieves the same result.
Module Replacement To replace a module in the Kubernetes cluster, delete the Module CR resource. For example:
kubectl delete yourmodule --namespace yournamespace
Replace yourmodule with the name of your Module CR entity (metadata name of Module), and yournamespace with your namespace. The example demonstrates using kubectl, but deleting a Module CR directly via the K8S API server achieves the same result.
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