如何使用 Fabric8 k8s java 客户端（版本：6.0.0）删除 HorizontalPodAutoscaler

Question

看起来不支持使用fabric8的K8S Java客户端版本：6.0.0删除HorizontalPodAutoscaler。

虽然使用 fabric8 的 K8S Java 客户端版本：6.0.0 创建 HorizontalPodAutoscaler 很简单。

例如

 HorizontalPodAutoscalerStatus hpaStatus = k8sClient.resource(createHPA())
                .inNamespace(namespace)
                .createOrReplace().getStatus();

public HorizontalPodAutoscaler createHPA(){
return new HorizontalPodAutoscalerBuilder()
                .withNewMetadata()
                    .withName(applicationName)
                    .addToLabels("name", applicationName)
                .endMetadata()
                .withNewSpec()
                    .withNewScaleTargetRef()
                        .withApiVersion(hpaApiVersion)
                        .withKind("Deployment")
                        .withName(applicationName)
                    .endScaleTargetRef()
                    .withMinReplicas(minReplica)
                    .withMaxReplicas(maxReplica)
                    .addNewMetric()
                        .withType("Resource")
                        .withNewResource()
                            .withName("cpu")
                            .withNewTarget()
                                .withType("Utilization")
                                .withAverageUtilization(cpuAverageUtilization)
                            .endTarget()
                        .endResource()
                    .endMetric()
                    .addNewMetric()
                        .withType("Resource")
                        .withNewResource()
                            .withName("memory")
                            .withNewTarget() 
                                .withType("AverageValue")
                                .withAverageValue(new Quantity(memoryAverageValue))
                            .endTarget()
                        .endResource()
                    .endMetric()
                    .withNewBehavior()
                        .withNewScaleDown()
                            .addNewPolicy()
                                .withType("Pods")
                                .withValue(podScaleDownValue)
                                .withPeriodSeconds(podScaleDownPeriod)
                            .endPolicy()
                            .withStabilizationWindowSeconds(podScaledStabaliztionWindow)
                        .endScaleDown()
                    .endBehavior()
                .endSpec().build();
}

任何使用 fabric8 的 K8S Java 客户端版本：6.0.0 删除 HorizontalPodAutoscaler 的解决方案都将得到应用。

Answer 1

KubernetesHPAProducer.doDeleteHPA：要删除 HPA Autoscaler Pod，请点击此链接

以下可能对您有所帮助：

protected void doDeleteHPA(Exchange exchange, String operation) throws Exception {

   String hpaName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_HPA_NAME, String.class);

   String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);

   if (ObjectHelper.isEmpty(hpaName)) {

     LOG.error("Delete a specific hpa require specify a hpa name");

     throw new IllegalArgumentException("Delete a specific hpa require specify a hpa name");

   }

   if (ObjectHelper.isEmpty(namespaceName)) {

     LOG.error("Delete a specific hpa require specify a namespace name");

     throw new IllegalArgumentException("Delete a specific hpa require specify a namespace name");

   }

   boolean hpaDeleted = getEndpoint().getKubernetesClient().autoscaling().horizontalPodAutoscalers().inNamespace(namespaceName).withName(hpaName).delete();



   MessageHelper.copyHeaders(exchange.getIn(), exchange.getOut(), true);

   exchange.getOut().setBody(hpaDeleted);

 }

}