Like a Deployment, a StatefulSet manages Pods that are based on an identical container spec. However, by defining a Deployment object, you can specify that Kubernetes should run multiple instances of the pod. 1 Answer. It allows for controlled updates and seamless scaling, while maintaining the integrity of data and. A StatefulSet is the Kubernetes controller used to run the stateful application as containers (Pods) in the Kubernetes cluster. Now that we have the Dockerfile and Kubernetes configuration ready, let's deploy RabbitMQ in Kubernetes using the following commands: kubectl apply -f configmap. Deployment. Melakukan proses manajemen deployment dan scaling dari sebuah set Pods, serta menjamin mekanisme ordering dan keunikan dari Pod ini. イメージ的にはPodTemplateを持つDeploymentにPVCも追加した感じ。. When deploying a Kubernetes application using the regular deployment and a ReplicaSet or a StatefulSet, you define the application as a Kubernetes Service, so other applications can interact with it. A pod is the smallest deployable unit in Kubernetes which has a collection of containers. If the zk-0 and zk-1 Pods were deployed on the same node, and that node failed, the ZooKeeper ensemble couldn’t form a quorum to commit writes, and the ZooKeeper service would experience an outage until one of the Pods. When deploying a Kubernetes application using the regular deployment and a ReplicaSet or a StatefulSet, you define the application as a Kubernetes Service, so other applications can interact with it. In Elasticsearch, for example, indexes are broken up into shards. Learn how Kubernetes Deployments and StatefulSets are used to automatically provision applications, and which will work best for your use case. See Writing a Deployment Spec for more details. So we will add the namespace while deploying each component. If you’re writing your own operator to manage a Kubernetes application, here are some best. In Kubernetes, a Deployment is a workload resource object that lets you configure the lifecycle of pods in the cluster. You can use --help after the subcommand to get additional info about possible parameters (for example: kubectl get nodes --help). Diferencia entre Statefulset y Deployment en Kubernetes. Like a Deployment, a StatefulSet manages Pods that are based on an identical container spec. On an update the existing Pods will get deleted and recreated. Kubernetes manages the cluster of worker and master nodes and allows you to deploy, scale, and automate containerized workloads such as Kafka. CronJob. Published Oct 5, 2022 StatefulSets let you run stateful applications in Kubernetes. This avoids running into a potential peer discovery race condition when deploying a multi-node RabbitMQ cluster. 27, this feature is now beta. I'm trying to deploy a stateful application. A StatefulSet can deploy applications that need to reliably identify specific replicas, rollout updates in a pre-defined order, or. For example, if you create a StatefulSet named “my-statefulset” with three replicas, the pod names would be “my-statefulset-0”, “my-statefulset-1”, and “my-statefulset-2”. The Portainer team spend a lot of time in online communities related to Kubernetes, and one of the most frequent questions we see relates to data persistence for apps. 22 introduced a new ReadWriteOncePod access mode for PersistentVolumes and PersistentVolumeClaims. - Storage: As many VolumeClaims as requested. Nó sẽ được tạo tuần tự. It is clearly explained in the documentation under Deleting the Statefulset: Deleting a StatefulSet through kubectl will scale it down to 0, thereby deleting all pods that are a part of it. Stateless & Stateful come into the picture a lot while using Kubernetes. kubectl get pods. yml service/redis-ss created. Like a Deployment, a StatefulSet manages Pods that are based on an identical container spec. Unlike a Deployment, a StatefulSet. By using StatefulSet, developers can. Kubernetes Services: Pods exposed1 Answer. 4. Deployments with three replicas all schedule simultaneously. We will also look into an example of StatefulSets. For example, Kubernetes groups containers into units called pods,. Save the Value of the admin user key printed out by the command above. In this article, we will deploy a clustered Prometheus setup that integrates Thanos. Each new pod in statefulset then have a new PV attached to. 5 or later. Deployments and ReplicationControllers are meant for stateless usage and are rather lightweight. A HorizontalPodAutoscaler (HPA for short) automatically updates a workload resource (such as a Deployment or StatefulSet), with the aim of automatically scaling the workload to match demand. It seems to support some of the same features of a ReplicationController - scale up/down and auto restart, but it's not clear if it supports rolling upgrades or autoscale. On an update the existing Pods will get deleted and recreated. StatefulSet is a Kubernetes controller that manages multiple pods that have unique identities, and are not interchangeable (unlike a regular Kubernetes Deployment, in which pods are stateless and. There is, however a more complicated approach that you can use with Dynamic. The pod template specifies the container image and port to be used for the application. 5 and becoming stable in 1. 5 or later. In GKE, a default StorageClass allows you to dynamically provision Compute Engine persistent disks. Provide a name for the deployment and the container image to deploy. Pods (and, by extension, containers) are, nevertheless, short-lived entities. Eviction is the process of proactively terminating one or more Pods on resource-starved Nodes. 6 min read | by Jordi Prats. The example topology has a single primary server and multiple replicas, using asynchronous row-based replication. Hi keycloak community, the keycloak operator currently creates the workloads as deployment which means that the pods are replaced by a new ones when they are restarted. They are listed below. Deployment is designed to create and manage a set of identical, independent, and replaceable copies of a pod. Requirements of Stateful Applications. StatefulSetには以下のような特徴がある。. g. Let us see how StatefulSet differs from Deployment-1. 0. The functions that this framework enables vary widely from one database deployment to another. Let's look at the top 4 Kubernetes DaemonSet Alternatives you can use. Deployment vs StatefulSet component. StatefulSet. StatefulSet is a controller in Kubernetes that allows users to manage pods the same as the deployments. Step 2. StatefulSet is also a Controller but unlike deployments, it doesn’t create ReplicaSet rather it creates the Pod with a unique naming. Click Services, and then click Add Service. Ordinal Index. Migrating stateful applications from deployment to statefulset is one of the best way to start getting feedback from users. Welcome back to our series of Kubernetes monitoring guides. It provides declarative updates for pods and their. 1. Unlike a Deployment, a StatefulSet maintains a sticky, persistent identity for each of their Pods. Using volumeClaimTemplates, each replica will get a unique PersistentVolumeClaim with statefulset whereas all replicas would share the PersistentVolumeClaim with a deployment. With a StatefulSet, your data can be stored on persistent volumes, decoupling the database application from the persistent storage, so when a pod (such as the database application) is recreated, all the. StatefulSet Kubernetes | Understand what StatefulSet in Kubernetes is and how it worksUsing StatefulSet in practice 🙅🏼♀️ page describes the use of StatefulSet objects in Google Kubernetes Engine (GKE). yml └── keycloak-statefulset. If you don’t specify the namespace, it gets deployed in the default namespace. StatefulSet. A StatefulSet is a controller that helps you deploy and scale groups of Kubernetes pods. If you want to provide workload persistence using Kubernetes persistent storage, you can incorporate a StatefulSet into your. StatefulSet was released in the Kubernetes 1. Before understanding StatefulSets, you must understand Kubernetes Deployment. Unlike the average Kubernetes pods, pods within a StatefulSet have a unique index and a stable network identity that is published through a Headless Service. StatefulSets. Login to your Ceph Cluster and get the admin key for use by RBD provisioner. Each pod has a persistent identifier that it maintains across any rescheduling: Pod names are unique: Pod names are in sequential order 7 Answers. In a stateful containerized application, data must be persistent, retained and easy to access outside the application. In this article, I’ll talk about Stateless and Stateful and attempt to answer two common misconceptions. Note: This is not a production configuration. It is particularly useful for managing databases, message brokers, and other stateful services. Create a StatefulSet file. Like a Deployment, a StatefulSet manages Pods that are based on an identical container spec. I would like to expand on this topic a bit. StatefulSets DaemonSets There is one other type ReplicationController but Kubernetes now favors Deployments as Deployments configure ReplicaSets to support. It takes the statefulset name and the desired number of replicas as arguments. When you start a Deployment and specify a PVC, it will be shared by all pod replicas (if the volume is read-only). StatefulSet (stable-GA in k8s v1. Deployments: It is used for “stateless applications”. Identities are defined as: Network: A single stable DNS and hostname. Its main job is to manage containers. We will create the “ redis ” namespace then apply the file. A Deployment is a Kubernetes resource object used for declarative application updates. The WekaFS CSI plugin is deployed using a Helm Chart or as a Daemonset, along with the POSIX agent on Kubernetes worker nodes, and is. yml. Kafka On. As the replicas field of the zk StatefulSet is set to 3, the Set's controller creates three Pods with their hostnames set to zk-0, zk-1, and zk-2. A StatefulSet manages Pods that are based on an identical container spec. But it differs from a Deployment in that it is more suited for stateful apps. Deployment vs. svc. Editor’s note: this post is part of a series of in-depth articles on what's new in Kubernetes 1. A StatefulSet manages Pods that are based on an identical container spec. Pods hold the containers for an application. Like a Deployment, a StatefulSet manages Pods that are based on an identical container spec. #Deployment vs. In this exhaustive blog post, we will unravel these strategies layer by layer, backed by real-world scenarios and meticulously explained code examples. You can use StatefulSets to deploy stateful applications and clustered applications that save data to persistent storage, such as Compute Engine persistent. g. This is where PersistentVolumes come into play. 27 graduated to beta a new policy mechanism for StatefulSets that controls the lifetime of their PersistentVolumeClaims (PVCs). If Kubernetes is the new operating system, then a pod is the new process. Unlike a Deployment, a StatefulSet. This controller runs Jobs -- components of a Kubernetes workload that execute specific tasks -- according to. With this in mind we might just copy the Pod's template from a. metadata. Deploying Stateful Applications is not staright forward as Stateless Applications. Deployments configure apps in a generic way. Deployment — เหมาะสำหรับงานที่แต่ละ Pod ทำงานเป็นอิสระจากกัน (Stateless) StatefulSet — เหมาะกับงานที่แต่ละ Pod มีลำดับ (1 2 3) หรือบทบาทต่างกันEditor’s note: this post is part of a series of in-depth articles on what's new in Kubernetes 1. . These pods are created from the same spec, but are not interchangeable: each has a persistent identifier that it maintains across any rescheduling. Two commonly used ones are Deployments and StatefulSets. yaml. From K8S Docs. So yes, StatefulSet helps preserve the order and name of the pod, but what is it that it does extra (or different) that is advantageous over a regular Deployment with respect to volumes. Why use StatefulSets. To deploy and run stateful applications, Kubernetes uses the Statefulset controller as stateful objects where each pod is non-interchangeable and has a maintained unique identifier. Kubernetes StatefulSet is a resource that manages a set of identical stateful pods. updateStrategy field, by waiting for each pod. These can be used to make sure that a pod. For a rolling update, the Deployment's maxUnavailable will be in effect, even if the PodDisruptionBudget specifies a smaller value. spec. Here is what the above statefulset does: Set 3 replicas. Deployment vs StatefulSet component. While a StatefulSet keeps a unique identity for each Pod it manages. Horizontal scaling means that the response to increased load is to deploy more Pods. One reason is that your coredns or kube-dns use dnsPolicy: Default and not the default dnsPolicy: ClusterFirst so changing it cluster-wide might affect your coredns/kube-dns pods. A Deployment is a management tool for controlling the behavior of pods. Deployment with Node Selector. OpenEBS runs on any Kubernetes platform and uses any Cloud storage solution including AWS s3, GKE and AKS. Read: Kubernetes vs Docker Swarm. zk-0. The well-known Kubernetes features for Pod affinity and anti-affinity, allow some control of Pod placement in different topologies. StatefulSets are useful for managing stateful applications that require stable network identities and persistent. In my understanding JGroups Cluster is designed to work with stable node identities like they are provided by statefulset. February 11, 2023 by jamezshame. In this article, we’ll compare Kubernetes Deployment vs Kubernetes StatefulSet, explore their differences, and help you decide which one to use for your application. It should be noted that the Kubernetes Deployment works fine if you have only one single MongoDB replica being. Google Cloud created it to deploy the containerized infrastructure more efficiently, and it is now a part of the Cloud Native Computing Foundation (CNCF). Deployments. g. Using these replicas, we can have fast failover of the Kafka nodes and eliminate the I/O load during. a cache or database cluster even though it may solve your specific situation as. A DeploymentConfig (DC) in OpenShift is more or less equivalent to a Kubernetes Deployment, nowadays. In statefulsets each replica pod created has an index number starting from 0 and it will only setup the next replica if the previous one is running. template field of the YAML configuration. StatefulSet represents a set of pods with consistent identities. All the examples available are showing Redis cluster being deployed as a combination of Kubernetes’ StatefulSets and PersistentVolumes. The StatefulSet guarantees that a given network identity will always map to the same storage identity. Nota: Los StatefulSets son estables (GA) en la versión 1. With a StatefulSet each Pod get its own PersistentVolumeClaim, but with Deployment all Pods use the same PersistentVolumeClaim. Các Pod của Statefuleset không hoàn toàn giống. Note: This is not a production configuration. We’ll skip over this and go straight to the StatefulSet. To create a service, use the kubectl expose command. This is referred to as at most. cluster. For example, the official. Given this difference, Deployment is more suited to work with stateless applications. Deployment is designed to create and manage a set of identical, independent, and replaceable copies of a pod. io/hostname operator: In values: - docker-desktop SC kind: StorageClass apiVersion: storage. Stateful vs. 5, we’ve moved the feature formerly known as PetSet into beta as StatefulSet. Adding a volume to a Kubernetes StatefulSet using kubectl patch. First, we should create some data on our MySQL server: 5. You can find controllers that run outside. For any other case, it’s recommended that you use a Deployment. There were no major changes to the API Object, other than the community selected name, but we added the semantics of “at most one pod per index” for deployment of the Pods in. Planning a Collector Deployment in Kubernetes. To deploy the PostgreSQL cluster, we will create a dedicated namespace named database. 5. It was initially developed by Google for the purpose of managing containerized applications or microservices across a distributed cluster of nodes. If there's heavy load, you can set up a HorizontalPodAutoscaler to. Let us see how StatefulSet differs from Deployment-1. Overview StatefulSet and deployment controllers. Why use StatefulSets. The StatefulSet guarantees stable network identity for each instance. A local persistent volume serves as a. These. If you are unsure about whether to scale your StatefulSets, see StatefulSet concepts. 1. The biggest difference between Deployment and StatefulSet is in how they manage the lifecycle of a pod. Deployment provides higher-level abstractions and additional features such as rolling updates, rollbacks, and versioning of the application. The strategy used is determined by the spec. We often say that for stateful apps you need to use StatefulSet and for stateless apps a Deployment. YAML: mongodb-service. 23 introduced a new, alpha-level policy for StatefulSets that controls the lifetime of PersistentVolumeClaims (PVCs) generated from the StatefulSet spec template for cases when they should be deleted automatically when the StatefulSet is deleted or pods in the StatefulSet are scaled. Statefulsets and Operators are not that similar. February 4, 2021. Each with their own semantics. Add readiness probes to your deployments. StatefulSet is also a Controller but unlike deployments, it doesn’t create ReplicaSet rather it creates the Pod with a unique naming convention. Aug 25, 2023 10 min read Statefulset Deployment Kubernetes As Kubernetes continues its ascent as a leading container orchestration platform, it's common for users to. It is not advisable to run multiple replicas of the same release of pihole using a deployment because of the same shared underlying storage; It is, however, possible to run multiple different releases of pihole (e. Unlike a Deployment, a StatefulSet. A StatefulSet is a workload API object for managing stateful applications. The StatefulSet controller provides each Pod with a unique hostname based on its ordinal index. 安定したネットワーク識別子. A ReplicaSet is a Kubernetes object that ensures that a specified number of replicas of a pod are running at any given time. This name will become the basis for the ReplicaSets and Pods which are created later. Kubernetes Deployment. If there's heavy load, you can set up a HorizontalPodAutoscaler to. Storage. I’d suggest you have 3 Kubernetes Nodes with at least 4GB of RAM and 10GB of storage. Azure Pipelines has two tasks for working with Kubernetes: KubernetesManifest task: bake and deploy manifests to Kubernetes clusters with Helm, Kompose, or. This article describes how to create, update, and delete StatefulSets, which are used to maintain the state of an application beyond a pod lifecycle in an Azure Kubernetes Serice deployment in AKS hybrid. This name will become the basis for the ReplicaSets and Pods which are created later. A stateful application requires pods with a unique identity (for example, hostname). In Kubernetes, a Pod represents a set of running containers on your cluster. . It is part of the Kubernetes deployment management system and plays a crucial role in achieving high availability and scalability. Deploy your pods as part of a Deployment, DaemonSet, ReplicaSet, or StatefulSet across nodes. Kubernetes is Google’s open-source solution for running distributed workloads. name field. However, even when using the same name for the volume claim as before, it seems to be creating an. The cluster state in Kubernetes is defined by resource definitions, written as manifest files, that specify the internal behavior of the cluster. Manages the deployment and scaling of a set of Pods, and provides guarantees about the ordering and uniqueness of these Pods. Definitely leverage a persistent volume for database. Deploying a MongoDB Database: Here is an example of how to deploy a MongoDB database using a StatefulSet in Kubernetes. Unlike a Deployment, a StatefulSet. PVC is auto-created for each replica but is not autodeleted (well, this feature is alpha in Kubernetes 1. Step 1. 1. If you are unsure about whether. svc. Ordinals can start from arbitrary non-negative numbers. MySQL settings remain on insecure defaults to. A stateful pod in Kubernetes is a pod that requires persistent storage and a stable network identity to maintain its state all the time, even during pod restarts or rescheduling. Kubernetes has become the de-facto orchestration tool and initially it was supporting stateless applications, but stateful (data-driven) applications are very common and are critical to almost all the businesses. Remember that you can choose any namespace of your choice here. Kubernetes StatefulSet is a powerful resource for managing stateful applications on Kubernetes. Unlike deployments, statefulset maintains an identity for each of the pods. When we scale the StatefulSet from 1 replica to 3, the StatefulSet controller starts to incrementally deploy new (missing) pods, one at a time. Pods created as part of a StatefulSet are given persistent identifiers that they retain even when they’re rescheduled. When you use a StatefulSet, Kubernetes terminates Pods in the opposite order to their creation. $ kubectl create ns redis $ kubectl apply -f redis-service. Unlike a Deployment, a StatefulSet maintains a. The example topology has a single primary server and multiple replicas, using asynchronous row-based replication. They provide stable pod identity, persistent per pod storage and ordered graceful deployment, scaling and rolling updates. Like a Deployment, a StatefulSet. I did a few tests and got a few concepts to get straight. Here is a step by step tutorial on how to use StatefulSets and some basic operations on StatefulSets. Operator hides the orchestration details of complex applications and greatly reduces the threshold to use them in k8s. The init container is responsible for defining the zookeeper node unique ID. Deployments vs Daemonsets vs Statefulsets. Các Pod của Deployment cũng có thể bị xóa theo thứ tự bất kỳ, hoặc xóa đồng thời nhiều Pod (trong trường hợp scale down deployment) Statefulset. StatefulSets are particularly useful when you have stateful applications, such as databases, that require stable network identities and persistent storage. Deployment vs. Kubernetes (K8s)is an open-source container orchestration system. Add a comment. Stateful app pods require unique identities because they communicate with other pods. The backing storage obviously must have ReadWriteMany or ReadOnlyMany accessMode if you have more than one replica pod. StatefulSets are ideal for database deployments. I want to deploy a single Pod on a Node to host my service (like GitLab for the example). Enter a name for the Application and click Submit. yml. 1. It will create three Pods named web-0,web-1,web-2. Ensure your cluster has enough resources available, and if not scale your cluster by adding more Kubernetes Nodes. Replicas - describes how many pods this deployment should have. While the pod is the basic deployment unit for containers, Kubernetes provides various resource objects for orchestrating multiple pod replicas. Manages the deployment and scaling of a set of Pods, and provides guarantees about the ordering and uniqueness of these Pods. Deployments use ReplicaSets as a mechanism to orchestrate Pod creation, deletion, and updates. If you are writing data on one MySQL Pod, do not replicate the same data on another MySQL Pod if the Pod is restarted. The local persistent volumes feature reached general availability in Kubernetes 1. A stateful application requires pods with a unique identity (for example, hostname). io/zone). Use kubectl apply -f <directory>. summary, it is possible to set min / max replicas for a statefulset using HPA. Also, it provides a unique identity by. They are not interchangeable. replicas. February 11, 2023 by jamezshame. Horizontal scaling means that the response to increased load is to deploy more Pods. You can also create Pods. kubectl rollout restart deploy -n namespace1 will restart all deployments in specified namespace with zero downtime. exe create deployment my-nginx --image nginx. Then, the second pod (2) does likewise. But what is the best for this case ?E. Whether your workload is a single component or several that work together, on Kubernetes you run it inside a set of pods . If it replaces them because the configuration changes, it keeps the names the same. statefulsets do ordinal scheduling; first pod 0, then pod 1, etc. A bare metal deployment of the collector is simple to plan and execute: it’s a single binary that runs as a daemon on the host. This comes at a cost of slow scale ups and. In this example: A Deployment named nginx-deployment is created, indicated by the . In the above YAML file, we have defined a simple StatefulSet to deploy a PostgreSQL database. It gives the pods sequential names, starting with statefulsetname-0; and. Learn more in the detailed guide to Kubernetes Statefulset. Using kubectl. g. StatefulSet is also a Controller but unlike Deployments, it doesn’t create ReplicaSet rather itself. Ordinal Index. Verify that. Here is the quote from a relevant section from the docs: Like a Deployment, a StatefulSet manages Pods that are based on an identical container spec. Represents the latest available observations of a statefulset’s current state. Podname and Identity. By default, Kubernetes runs one instance for each Pod you create. To deploy Wazuh on Kubernetes, the cluster should have at least the following resources available: 2 CPU units. Use a Stateful Set. g. The Deployment controller handles the disposing of pods if they become unhealthy or are no longer needed. ; A Persistent Volume (PV) to allocate storage space for the database. A StatefulSets are Kubernetes objects used to consistently deploy stateful application components. You should delete the deployment and then create new statefulset. 16 DevOps Best Practices to Follow. The Reclaim Policy is used to determine the actions that need to be taken by the storage backend on deletion of the PV. Session affinity is achieved by enabling “sticky sessions,” allowing clients to go back to the same instance as often as possible, which helps. A StatefulSet is a Kubernetes API object for managing stateful application workloads. As their name suggests, StatefulSets are designed to run your app’s stateful components, while Deployments are used for stateless ones. This is a simple example of the above one. 1. Features and tools, such as Kubernetes Services, Jobs, and taints and tolerations, help admins manage pod and node deployment. You might set the Deployment to have replicas: 3 so that if one of them fails the other two can pick up the load. StatefulSets are used when state has to be persisted. Manages the deployment and scaling of a set of Pods, and provides guarantees about the ordering and uniqueness of these Pods. This is where PersistentVolumes come into. Operators are software extensions to Kubernetes that make use of custom resources to manage applications and their components. This post talks about recent updates to the DaemonSet and StatefulSet API objects for Kubernetes. It provides ordered pod creation, stable network identities, and persistent storage for each pod in the set. StatefulSet is the workload API object used to manage stateful applications. We will deploy a stateful application, and apply the aforementioned best practices in a simplified form. 5 In the latest release, Kubernetes 1. kubectl get service. To deploy and manage Kubernetes successfully, IT admins must first understand its core architectural building blocks. StatefulSet represents a set of pods with consistent identities. Kubernetes Deployment is a resource that manages a set of identical pods. The most basic difference is that you would get ability to persist pod level state with statefulsets. 8 and 1. Kubernetes offers a highly resilient infrastructure designed for zero downtime deployment, with capabilities such as scaling. Kubernetes defines many different resources and Controllers that manage them. Kubernetes (K8s) is one of the popular open-source container orchestration systems for automating deployment, scaling, and management of containerized applications. Các Pod của Statefuleset không hoàn toàn giống. See Writing a Deployment Spec for more details. OpenEBS is a cloud native storage project originally created by MayaData that build on a Kubernetes cluster and allows Stateful applications to access Dynamic Local PVs and/or replicated PVs. Kubernetes deployments manage stateless services running on your cluster (as opposed to for example StatefulSets which manage stateful services). This means that a Deployment can scale up or down easily, as it is able to replace a pod if it fails. availableReplicas . The hostnames take the form of <statefulset name>-<ordinal index>. While Kubernetes StatefulSet offers a host of options to manage stateful applications. In simple words StatefulSets = Deployment + unique network identifiers. In this example, we will create a PostgreSQL deployment as a StatefulSet with a persistent storage volume. In this article. For any other case, it’s recommended that you use a Deployment. Stateful app (1 instance) On the diagram above we can see a StatefulSet that generates a Pod which mounts a disk provided by the PVC/PV pair. Kubernetes Deployments are. You can use kubectl to deploy applications, inspect and manage cluster. To check your version of Kubernetes, run kubectl version. A Kubernetes StorageClass is a Kubernetes storage mechanism that lets you dynamically provision persistent volumes (PV) in a Kubernetes cluster. 0" plugin for the deploy. You can think of StatefulSet as the. but there is a hick. 9, you can autoscale your statefulsets using: apiVersion: autoscaling/v1 kind: HorizontalPodAutoscaler metadata: name: YOUR_HPA_NAME spec: maxReplicas: 3.