instruction: Create a Dockerfile for workloads
output: ```dockerfile
  from service for debugging, data recovery, etc. Pods that are removed in this way will be replaced automatically (
  assuming that the number of replicas is not also changed).Scaling a ReplicaSetA ReplicaSet can be easily scaled up or down by simply updating the .spec.replicas field. The ReplicaSet controller
  ensures that a desired number of Pods with a matching label selector are available and operational.When scaling down, the ReplicaSet controller chooses which pods to delete by sorting the available pods to
  prioritize scaling down pods based on the following general algorithm:Pending (and unschedulable) pods are scaled down firstIf controller.kubernetes.io/pod-deletion-cost annotation is set, then
  the pod with the lower value will come first.Pods on nodes with more replicas come before pods on nodes with fewer replicas.If the pods' creation times differ, the pod that was created more recently
  comes before the older pod (the creation times are bucketed on an integer log scale).If all of the above match, then selection is random.Pod deletion costFEATURE STATE:
  Kubernetes v1.22 [beta]Using the controller.kubernetes.io/pod-deletion-cost
  annotation, users can set a preference regarding which pods to remove first when downscaling a ReplicaSet.The annotation should be set on the pod, the range is [-2147483648, 2147483647]. It represents the cost of
  deleting a pod compared to other pods belonging to the same ReplicaSet. Pods with lower deletion
  cost are preferred to be deleted before pods with higher deletion cost.The implicit value for this annotation for pods that don't set it is 0; negative values are permitted.
  Invalid values will be rejected by the API server.This feature is beta and enabled by default. You can disable it using the
  feature gate
  PodDeletionCost in both kube-apiserver and kube-controller-manager.Note:This is honored on a best-effort basis, so it does not offer any guarantees on pod deletion order.Users should avoid updating the annotation frequently, such as updating it based on a metric value,
  because doing so will generate a significant number of pod updates on the apiserver.Example Use CaseThe different pods of an application could have different utilization levels. On scale down, the application
  may prefer to remove the pods with lower utilization. To avoid frequently updating the pods, the application
  should update controller.kubernetes.io/pod-deletion-cost once before issuing a scale down (setting the
  annotation to a value proportional to pod utilization level). This works if the application itself controls
  the down scaling; for example, the driver pod of a Spark deployment.ReplicaSet as a Horizontal Pod Autoscaler TargetA ReplicaSet can also be a target for
  Horizontal Pod Autoscalers (HPA). That is,
  a ReplicaSet can be auto-scaled by an HPA. Here is an example HPA targeting
  the ReplicaSet we created in the previous example.controllers/hpa-rs.yaml
  apiVersion: autoscaling/v1
  kind: HorizontalPodAutoscaler
  metadata:
   name: frontend-scaler
  spec:
   scaleTargetRef:
   kind: ReplicaSet
   name: frontend
   minReplicas: 3
   maxReplicas: 10
   targetCPUUtilizationPercentage: 50
  Saving this manifest into hpa-rs.yaml and submitting it to a Kubernetes cluster should
  create the defined HPA that autoscales the target ReplicaSet depending on the CPU usage
  of the replicated Pods.kubectl apply -f https://k8s.io/examples/controllers/hpa-rs.yaml
  Alternatively, you can use the kubectl autoscale command to accomplish the same
  (and it's easier!)kubectl autoscale rs frontend --max=10 --min=3 --cpu-percent=50
  Alternatives to ReplicaSetDeployment (recommended)Deployment is an object which can own ReplicaSets and update
  them and their Pods via declarative, server-side rolling updates.
  While ReplicaSets can be used independently, today they're mainly used by Deployments as a mechanism to orchestrate Pod
  creation, deletion and updates. When you use Deployments you don't have to worry about managing the ReplicaSets that
  they create. Deployments own and manage their ReplicaSets.
  As such, it is recommended to use Deployments when you want ReplicaSets.Bare PodsUnlike the case where a user directly created Pods, a ReplicaSet replaces Pods that are deleted or
  terminated for any reason, such as in the case of node failure or disruptive node maintenance,
  such as a kernel upgrade. For this reason, we recommend that you use a ReplicaSet even if your
  application requires only a single Pod. Think of it similarly to a process supervisor, only it
  supervises multiple Pods across multiple nodes instead of individual processes on a single node. A
  ReplicaSet delegates local container restarts to some agent on the node such as Kubelet.JobUse a Job instead of a ReplicaSet for Pods that are
  expected to terminate on their own (that is, batch jobs).DaemonSetUse a DaemonSet instead of a ReplicaSet for Pods that provide a
  machine-level function, such as machine monitoring or machine logging. These Pods have a lifetime that is tied
  to a machine lifetime: the Pod needs to be running on the machine before other Pods start, and are
  safe to terminate when the machine is otherwise ready to be rebooted/shutdown.ReplicationControllerReplicaSets are the successors to ReplicationControllers.
  The two serve the same purpose, and behave similarly, except that a ReplicationController does not support set-based
  selector requirements as described in the labels user guide.
  As such, ReplicaSets are preferred over ReplicationControllersWhat's nextLearn about Pods.Learn about Deployments.Run a Stateless Application Using a Deployment,
  which relies on ReplicaSets to work.ReplicaSet is a top-level resource in the Kubernetes REST API.
  Read the
  ReplicaSet
  object definition to understand the API for replica sets.Read about PodDisruptionBudget and how
  you can use it to manage application availability during disruptions.FeedbackWas this page helpful?Yes
  NoThanks for the feedback. If you have a specific, answerable question about how to use Kubernetes, ask it on
  Stack Overflow.
  Open an issue in the GitHub Repository if you want to
  report a problem
  or
  suggest an improvement.Last modified June 18, 2024 at 6:53 PM PST: Add documentation for LogarithmicScaleDown featuregate (76ec4489c1) ReplicaSet API reference
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   Print entire sectionHow a ReplicaSet worksWhen to use a ReplicaSetExampleNon-Template Pod acquisitionsWriting a ReplicaSet manifestPod TemplatePod SelectorReplicasWorking with ReplicaSetsDeleting a ReplicaSet and its PodsDeleting just a ReplicaSet<a href=#isolating-pods-
  ```