You can use the kubectl expose command to create a NodePort Service for a ReplicaSet. The first Spec lets you declare what the ReplicaSet should appear like and the. To create and set up the Kubernetes replica set, we have to follow the below steps: 1. type ReplicaSet ¶ type ReplicaSet struct { Primary Client Secondaries [] Client } ReplicaSet holds the Clients of a redis replica set, consisting of a single primary (read+write) instance and zero or more secondary (read-only) instances. (kind: Deployment)list or watch objects of kind ReplicaSet. A ReplicaSet provides basic scaling mechanisms for pods, such as creating new pods if. To add node selectors to an existing pod, add a node selector to the controlling object for that node, such as a ReplicaSet, Daemonset, or StatefulSet. 2: Download an Example ReplicaSet. However, a Deployment is a higher-level concept that manages. list or watch objects of kind ReplicaSet. Every one of them is a member of the Kubernetes ReplicaSet. metadata. Then, it’ll gradually move the Pods from the old ReplicaSet to the new one at a controlled rate. If the pod disappears for any reason, such as in the event of a node. Hello, I have a . The example 9-1 describing a simple ReplicaSet seems to be invalid, when you try to create the ReplicaSet the k8s responds: no matches for kind "ReplicaSet" in version "v1beta1" You can use `apiVersion: apps/v1` instead of `extensions/v1beta1` but you still need to inform the `spec. Consider this: The pods are not directly managed by a deployment, but a deployment manages a ReplicaSet. In the case of a Job, update parallelism only if the current parallelism value matches. Once the MongoDB resource is created, the operator will deploy a new. I'll post my answer with the full code example later if no one else replies to my question. 4. For example, by deploying OPA as an admission controller you can: Require specific labels on all resources. yaml replicaset. The above RS manifest file uses a ReplicaSet to run three copies of the my-image: latest container image. kubectl create -f my-replica-set. In Kubernetes, Admission Controllers enforce policies on objects during create, update, and delete operations. For this the recommended approach is to use a Deployment, which under the hood create a ReplicaSet. As such, it is often used to guarantee the availability of a specified number of identical Pods. This will likely be a ReplicaSet (which is generated by the Deployment). With the help of deployment You can simply roll back to a previous Deployment revision. # kubectl delete rs soaktestrs replicaset "soaktestrs" deleted # kubectl get pods Again, the pods that were created are deleted when we delete the Replica Set. ReplicaSet 管理所有标签匹配与标签选择器的 Pod。. any other type, if the VMI writes internally to a tmpfs; Fast starting ephemeral Virtual Machines¶ This use-case involves small and fast booting VMs with little provisioning performed during initialization. Let’s create a replicaset to understand this. Các nội dung trước chúng ta đã đi qua: Trong bài hôm nay chúng ta sẽ làm quen và thao tác với Kubernetes. Một ReplicaSet được định nghĩa bởi các trường bao gồm 1 selector để xác định các pod phù hợp, số lượng replicas (bản sao) cho biết số lượng pod nó cần phải duy trì và 1 pod template xác định dữ liệu của pod mới nó cần tạo ra để đáp ứng. Table 7. 它不区分自己创建或删除的 Pod 和其他人或进程创建或删除的pod。. metadata. A Deployment is a Kubernetes entity/object one level higher than a ReplicaSet, ie Deployments contain ReplicaSets, which in turn contain Pods. 오늘은 ReplicaSet의 이해를 위해 kind: ReplicaSet 을 명시해서 예제를 작성하겠지만 실제로 클러스터를 구성해서 사용할 때는 ReplicaSet을 별도로 정의해서 사용하기보다, Deployment를 정의하는 spec에 replicas: 3 과 같이 간단히 정의해서 ReplicaSet을 사용할 수 있다. We also define a number of labels through which we can identify it. My 2 cents on the subject, don't mix POD status with Container status (it's true that they're correlated). Delete the ReplicaSet Let's clean up before we move on. In the above screenshot, you can see the details of the ponds created after creating a replica set. A ReplicaSet identifies new Pods to acquire by using its selector. apiVersion: apps/v1 #version of the API to use kind: ReplicaSet #What kind of object we're deploying metadata: #information about our object we're deploying name: nginx-replicaset spec: #specifications for our object replicas: 2 #The number of pods that should always be running selector: #which pods the replica set should be responsible for. selector ，否则它将被 API 拒绝。. Instead of creating Pods one by one, you can create a ReplicaSet object in which you specify a Pod template and the desired number of replicas, and then have Kubernetes create the Pods, as shown in the following figure. selector ，否则它将被 API 拒绝。. I have a pod in my EKS cluster and I want to edit it's yaml so that I can change the read-only values from true to false. このリソースは直接使用することは少ないが、次に出てくるDeploymentを抑える上で理解が進むのでやっていこう。. tier: Backend → We have defined the label tier. The load balancer. Then create a Deployment object by running the following command: 1. name of the ReplicaSet is part of the basis for naming those Pods. name of the ReplicaSet is part of the basis for naming those Pods. The ReplicaSets are also known as next generation Replication Controller. ReplicaSet ensures that a specified number of pod replicas are running at any given time. Using YAML file to create ReplicaSet in Kubernetes is quite popular and is also the most preferable way. blockStores. yaml and run this command to create the container. this may be used to filter the deployment based on this label. 9 the API version apps/v1 on the ReplicaSet kind is the current version and is enabled by default. ReplicaSet. Admission control is fundamental to policy enforcement in Kubernetes. Deployment. kind: ReplicaSet; The main difference between replicationController and replicaSet is, the replicaSet requires a field named selector as a child of main spec field. yml manifest and use kubectl create or. The replicaSet controller ensure that three pods are running at any point of time in the cluster. In this way, Kubernetes is self-healing. DaemonSetは、ReplicaSetの特殊な形のリソースになります。Replicasetは、各Nodeに均等に配置されるものではないが、DaemonSetは各Nodeに確実に1つずつPodを配置します。 そのため、レプリカ数の指定はできなく、1つのNodeに2つのPodを配置することもできません。The alerts and rules keys in the serverFiles group of the values. Means that GKE does not recognize ReplicaSet within apiVersion: apps/v1 I checked my cluster (I normally use deployments), pulled my replicaSet and it shows up as: apiVersion: extensions/v1beta1 kind: ReplicaSetThe kind of this object is ReplicaSet; In the metadata part, we define the name by which we can refer to this ReplicaSet. As with all other Kubernetes API objects, a ReplicaSet needs the apiVersion, kind, and metadata fields. svc. I found this with trial and error, so this is the diff file. In a nutshell label selectors depend on labels to select a group of resources such as pods. The Pod(s) maintained by a ReplicaSet has metadata. When the control plane creates new Pods for a ReplicaSet, the . Once our ReplicaSet template gets ready. The basic format is <server_name> <keytype> <base64-encoded_key>, one entry per line. A ReplicaSet is one of the Kubernetes controllers that makes sure we have a specified number of pod replicas running. 1. When the control plane creates new Pods for a ReplicaSet, the . Db. 1 Answer. a replicaset (web-65899c769f), a pod (web-65899c769f-dhtdx). Then create a Deployment object by running the following command: 1. Giới thiệu. We can control and configure the number of replicas with the replicas field in the resource definition. youbudong Update go. ReplicationController can only match a label with a value (As we saw in rs’s example). Specifying the desired number of replicas: ReplicaSet allows defining the desired number of replicas through its spec. ReplicaSets. A ReplicaSet is used to ensure that a specific number of replicas (copies) of a pod are running at any given time, while a Deployment manages updates to a ReplicaSet by creating a new ReplicaSet with the updated pod template and gradually scaling it up while scaling down the old ReplicaSet. Now, we know that the deployment we created earlier on has a configuration report. Table 7. For ReplicaSets, the kind is always a ReplicaSet. metadata. We will setup a single node Kubernetes cluster on our local machine using KinD (Kubernetes in Docker). schedulerName field of the DaemonSet. A ReplicaSet ensures that a number of Pods is created in a cluster. Below is an example of a. The Deployment creates a ReplicaSet that creates three replicated Pods, indicated by the . Here is my VS code, as you can see there are several errors, this code follows the courses code to the T. When you create a ReplicaSet, you are essentially telling Kubernetes that you want a specific pod replicated x amount of times. Keeping the Pods running with ReplicaSets. Create a deployment via kubectl run, as shown below. After you destroy the ReplicaSet, the running Pods will also get deleted. OpenShift Container Platform の Deployment および DeploymentConfig は、一般的なユーザーアプリケーションに対する詳細な管理を行うためのよく似ているものの、異なる 2 つの方法を提供します。. 63 <none> 443/TCP 8m54s. Creating Pods and RCs works . 대소문자 표기에 주의합니다. yaml file are mounted in the Prometheus container in the /etc/config folder. Replica Set use Set-Based selectors which. The spec part is mandatory in the ReplicaSet object. As in the case of Deployment, a controller is created, but unlike Deployment, it does not create a ReplicaSet , but instead it itself creates replicas from pods and assigns them names. 4, you should omit the --force option and use: kubectl delete pods <pod> --grace-period=0. La version de l'API apps/v1beta2 est obsolète. This helps to ensure that the desired state of the system is maintained. A regular ReplicaSet or Deployment would not be appropriate because you couldn't reliably identify the Pod running the primary replica. Replica Set use Set-Based selectors while replication controllers use Equity. Servers that do not implement bookmarks may ignore this flag and bookmarks are sent at the server's discretion. In kubernetes 1. metadata. 9 版本中，API. Thanks for your response. Now, let us create a ReplicaSet from an example from. Figure 13. Deploy Replica Sets on OpenShift . I just wanted a container! Why do I. KIND: ReplicaSet VERSION: apps/v1 DESCRIPTION: ReplicaSet ensures that a specified number of pod replicas are running at any given time. This setting allows you to provide different DNS settings within the Kubernetes cluster and to the Kubernetes cluster. We can filter the objects based on the criteria like class, kind, and functions. Its purpose is to maintain the specified number of Pod instances running in a cluster at any given time to prevent users from losing access to their application when a Pod fails or is inaccessible. Creating Pods and RCs works . To do this we will write a YAML configuration. Clients should not assume bookmarks are. In this example: A Deployment named nginx-deployment is created, indicated by the . Figure 13. Create a ReplicaSet: kubectl create . name of the ReplicaSet is part of the basis for naming those Pods. Use the following command to fetch all configuration reports: kubectl get configauditreports -o wide. Share. As a kind of Pod manager running in your cluster, a ReplicaSet makes sure the desired number and type of a certain Pod is always up and running. 9) is a Kubernetes resource used to manage stateful applications. DeploymentとReplicaSetとPod. metadata. "This integration runtime is being used by the other 23 linked services, they are all working fine. kind: This specifies the Kubernetes resource type. boolean. yaml apiVersion: autoscaling/v1 kind: HorizontalPodAutoscaler metadata: name: web-app-scaler spec: scaleTargetRef: kind: ReplicaSet name: web-app. You can also verify the pods running with the label tier=nginx using kubectl get pods -l tier=nginx command. Clients should not assume bookmarks are. 5. Hashes for kubesplit-0. Kubernetes is only told what it can work with by the apiVersion and kind parameters, which should never be different. You are defining the name and labels of the. allowWatchBookmarks requests watch events with type "BOOKMARK". In this lab, you'll create your first Kubernetes Pod. Rollback to an earlier Deployment revision if the current state of the Deployment is not stable. The manifest file for a deployment looks similar to a replicaset but the kind is deployment. Here’s a basic tutorial on how to scale an application using the vim terminal editor and adjusting the replicas property in a ReplicaSet configuration file: Step 1: Open the ReplicaSet configuration file in the vim terminal editor: $ vim my-rs. The trailing ReplicaSets that you can see after deployment deletion depends of the Revision History Limit that you have in your Deployment. It also. '. For ReplicaSets, the kind is always just. We need k8s to automatically start a pod if the pod prematurely dies or when a node failure happens. Match the metadata. Now we have the KIND value i. Hence the yaml should be as below. Pour ReplicaSets, l'attribut kind est toujours ReplicaSet. ObservedGeneration reflects the generation of the most recently observed ReplicaSet. You will get the following output: NAME SCANNER AGE CRITICAL HIGH MEDIUM LOW replicaset-mattermost-app-59d45 Trivy 4m33s 0 0 2 6. apiVersion: apps/v1 kind: ReplicaSet metadata. A ReplicaSet represents a group of Pod replicas (exact copies of a Pod). mongodb. It is instrumental in managing vast databases. yml manifest and use kubectl create or kubectl apply to create the deployment. The v1. It. 0 8m54s pod/metrics-server-694d47d564-cc4m2 1/1 Running 0 8m54s NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/metrics-server ClusterIP 10. Please remember that you should have the same number of entries in this section as the number of your replicaset members. yml file called ‘frontend. The following procedure describes how to configure to generate certificates for MongoDB Kubernetes Operator resources. Kind: Defines the resource as a ReplicaSet for the Kubernetes API. allowWatchBookmarks requests watch events with type "BOOKMARK". Replace <domain-rs-1>, <domain-rs-2>, and <domain-rs-3> with the external FQDNs of the MongoDB replicaset members. For Deployment, ReplicaSet, Replication Controller, only scale, if the number of existing replicas matches. The config is saved to the Kubernetes Secret. The original node affinity specified at the . Query parameters; Parameter Type Description; allowWatchBookmarks. We'll try to identify the cause based on these. MySQL 5. metadata: It contains the metadata for the ReplicaSet, such as its name. name of the ReplicaSet is part of the basis for naming those Pods. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected Comme avec tous les autres objets API Kubernetes, un ReplicaSet a besoin des champs apiVersion, kind et metadata . kubectl get replicaset. To add node selectors to an existing pod, add a node selector to the controlling object for that node, such as a ReplicaSet, Daemonset, or StatefulSet. name of the ReplicaSet is part of the basis for naming those Pods. In order to do that, you need to create a kind: Service for each of your ReplicaSet. Replace with the desired MongoDB deployment name -- this should be the same as in the previous step. apiVersion: apps/v1 kind: ReplicaSet metadata: name: frontend labels: app: guestbook tier: frontend; The first two fields are straightforward and constant, so they never change. metadata. Annotations provides additional information about an object, such as build information or. list or watch objects of kind ReplicaSet. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. Here are the details: I'm using Nuget packages: Mongo. 2. 2. name of the ReplicaSet is part of the basis for naming those Pods. The pods have been labeled with the pod-template-hash, and one of them was the pod created at the beginning of the test, and there are 2. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. To begin with, create an Express app first. metadata. Using a custom Docker Image and Deployments A ReplicaSet ensures that a specified number of Pod replicas are running continuously and helps with load-balancing in case of an increase in resource usage. $ kubectl run my - nginx -- image = nginx -- port 80. To add node selectors to an existing pod, add a node selector to the controlling object for that pod, such as a ReplicaSet object, DaemonSet object, StatefulSet object, Deployment object, or DeploymentConfig object. apiVersion: apps/v1 kind: ReplicaSet metadata: name: kuard spec:. Rollback to an earlier Deployment revision if the current state of the Deployment is not stable. apiVersion: v1 kind: Pod metadata: labels: run: redis name: redis spec: containers: - image: redis name: redis Save this as redis-pod. Once our ReplicaSet template gets ready. apiVersion: v1 kind: Pod metadata: labels: test: liveness name:. A ReplicaSet is a Kubernetes resource used to maintain a specified number of identical pod replicas within a cluster. Here the deployment type is chosen as ReplicaSet using the kind option. For ReplicaSets, the kind is always a ReplicaSet. As per the name, ReplicaSet is used for managing the replicas of our pods. Why Deployment manages multiple ReplicaSets? The answer is Kubernetes wants to support rollback mechanism. ReplicaSet is the next-generation ReplicationController that supports the new set-based label selector. name of the ReplicaSet is part of the basis for naming those Pods. Each rollback updates the revision of the Deployment. 8-eks-7c9bda Webhook Version: How do. Hence the yaml should be as below. 4. When the control plane creates new Pods for a ReplicaSet, the . In the replica sets, we used the selector. It is responsible for maintaining the desired state of a set of pods in a cluster. [root@localhost ~]# vi autoscale. 16 replicaset was moved to apps/v1 apiVersion from extensions/v1beta1. In the above screenshot we will find out the, shortcut of that service (rs), apiVersion (apps/v1), kind (ReplicaSet) and true means its supports Namespace. Additional fields in . metadata. yaml": no matches for apps/, Kind=ReplicaSet. 11. . Note. Then you are at the right place. We also define a number of labels through which we can identify it. Here, this replicaset will monitor Pods with the label tier: frontend. If any of the pods in the group die or get evicted, the ReplicaSet controller creates a replacement. Add unique labels to the deployment's template. With the taint in place, pods cannot be scheduled on the master. apiVersion: apps/v1 kind: ReplicaSet metadata: name: rs-app-b spec: replicas: 2 selector: matchLabels: app: app-b Describe a Scenario that We Should Use ReplicaSet Without Deployment. boolean. For example a deployment selects a group of pods by a. metadata. 5. . What did you expect? Mongodb-agent ready and cluster OKHello, I have a . metadata: name: my-replicaset. 1 Answer. kind: ReplicaSet. conditions. yaml. copy. Scaling of replicaset can also be done by using a resource called horizontal pod autoscaler. The continue option should be set when retrieving more results from the server. . I found this trick though till I could find a better way. Use this procedure to deploy a new replica set that Ops Manager. Use the same way to create deployment and modify kind to ReplicaSet in the yaml file and remove fields specific to deployment. 3. Then, it internally creates Pods inside that ReplicaSet. nodeAffinity field (if specified) is taken into consideration by the DaemonSet controller when evaluating the eligible nodes, but is. Configuration Examples. Similarly, if the ReplicaSet discovers an extra pod in the group, it will randomly delete one of the Kubernetes replicas in circulation. name of the ReplicaSet is part of the basis for naming those Pods. name field. The pod template specifies the characteristics of the pods that the ReplicaSet manages. kind: ReplicaSet → We have defined the kind as the replica set which helps kubectl to understand that the file is used to create a replica set. 3. Get replicaset. {key: tier, operation: In, values:. 它的主要作用是 确保Pod以你指定的副本数运行 ，即如果有容器异常退出，会自动创建新的 Pod 来替代；而异常多出来的容器也会. . allowWatchBookmarks requests watch events with type "BOOKMARK". If you want to clean it manually you can just paste that in your console. selector. mongod --replSet replicaset --port 27018 --bind_ip localhost,<hostname(s)|ip address(es. Deployment および DeploymentConfig について. 它不区分自己创建或删除的 Pod 和其他人或进程创建或删除的pod。. If you don't already have Octopus. レプリカセットは、 ReplicaSet と呼ばれるコアの Kubernetes オブジェクトです。 以下は、 ReplicaSet 定義のサンプルです。 apiVersion: apps/v1 kind: ReplicaSet metadata: name: frontend-1 labels: tier: frontend spec: replicas: 3 selector:. Rest all is same as the replication controller. kubectl commands for replication set. Create a ReplicaSet using image with latest tag only and remember to mention tag and name it as ; Labels app should be labels type should be front-end. This is how rolling updates work - the Deployment creates a new ReplicaSet then gradually scales up the new one and scales down the old to the new until they are all on the new version. ReplicaSet is a Kubernetes object that ensures that a specified number of replicas of a pod are running at any given time. A ReplicationController is a Kubernetes resource that ensures its pods are always kept running. Both are related to the limited control that deployments provide over how an application runs: Lack of granular control. For ReplicaSets, the kind is always a ReplicaSet. The ReplicaSet is a very useful basic building block in Kubernetes that other objects, like the Deployment object, rely on. Deployment is an abstraction over ReplicaSet. In this blog, I will. To learn more about replica sets, see the Replication Introduction in the MongoDB manual. (ReplicaSet extends an older object called ReplicationController-- which is exactly the same but without the Revision history. kind: ReplicaSet → We have defined the kind as the replica set which helps kubectl to understand that the file is used to create a replica set. For example, by deploying OPA as an admission controller you can: Require specific labels on all resources. Labels are like tags that identify and categorize Kubernetes objects. selector: This specifies a label selector to identify the pods managed by this ReplicaSet. Persistent Volume Claim It is a kind of formal request from user for claiming a persistent volume. These fields are shared by all k8s resource types. This name will become the basis for the ReplicaSets and Pods which are created later. Horizontal scaling means that the response to increased load is to deploy more Pods. Here name and labels are. 3 Answers. As with all other Kubernetes API objects, a ReplicaSet needs the apiVersion, kind, and metadata fields. Clients should not assume bookmarks are. labels 必须匹配 . yaml": no matches for kind "Replicaset" in version "apps/v1" ensure CRDs are installed first. A ReplicaSet is defined with fields, including a selector that specifies how to identify Pods it can acquire, a number of replicas indicating how many Pods it should be maintaining, and a pod template specifying the data of new Pods it should create to meet the number of replicas criteria. spec can be used such as minReadySeconds, paused and more. Setting the replicas count to 1 seems to do the trick. The number of ready replicas for this replica set. When intercepting a service that has multiple ports, the name of the service port that has been intercepted is also listed. The selector is used to identifying the Pods it can acquire. When you are managing ReplicaSet using Deployment You can also use a Deployment to create a new revision of a ReplicaSet and then migrate existing pods. ”ローリングアップデート”というのができる. revisionHistoryLimit is an optional field that specifies the number of old ReplicaSets to retain to allow rollback. Let’s have an example: When you instantiate a ReplicaSet, it creates the desired number of replicas using the pod template. image: my-image:latest. (Several days). The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected 对于 ReplicaSet 而言，其 kind 始终是 ReplicaSet。然后，ReplicaSet 也需要 . There's an example at the bottom of this blog post by. metadata includes the name for the ReplicaSet, which is "my-replicaset". Both of them ensure that a specified number of pod replicas are running at any given time. name of the ReplicaSet is part of the basis for naming those Pods. . In this case, it's set to 3. By. The images transformation tutorial shows how to specify the default images transformer and customize the images transformer configuration. kind: ReplicaSet metadata: name: 1st-replicaset spec: podSelector: matchLabels: app: Web-app replicas: 5. 2 นี้เราจะแนะนำ. apiVersion: apps/v1 kind: ReplicaSet metadata. The pods will scale automatically when the threshold value of the pod CPU will reach the maximum value as mentioned in the manifest file it depends on our requirement based on the incoming traffic. When the control plane creates new Pods for a ReplicaSet, the . This name will become the basis for the ReplicaSets and Pods which are created later. kubectl create -f kubia-replicaset. For example :While creating ReplicaSet, I am getting following error: The ReplicaSet "julrs" is invalid: spec. # kubectl delete rs soaktestrs replicaset "soaktestrs" deleted # kubectl get pods Again, the pods that were created are. If one Pod goes down in a ReplicaSet, another will be created to replace it. 아울러 이들의 실행 구역을 논리적으로 분할하는 네임스페이스(Namespace)의 역할도 함께 들여다 본다. 16 replicaset was moved to apps/v1 apiVersion from extensions/v1beta1. It default to 1 if it was not. ReplicaSetは指定された数のPodを複製し、実行してくれる。. A replica set is a group of MongoDB deployments that maintain the same data set. . kind: ReplicaSet; The main difference between replicationController and replicaSet is, the replicaSet requires a field named selector as a child of main spec. Kubernetes is only told what it can work with by the apiVersion and kind parameters, which should never be different. And a new pod will spring to life to replace it: NAME READY STATUS RESTARTS AGE LABELS rs-quarkus-demo-2txwk 0/1 ContainerCreating 0 2s app=quarkus-demo,env=dev rs-quarkus-demo-jd6jk 1/1 Running 0 109s app=quarkus-demo,env=dev rs-quarkus-demo-t26gt 1/1. name of the resource to the spec. I 'm Following this guide in order to set up a pod using minikube and pull an image from a private repository hosted at: hub. Use the same way to create deployment and modify kind to ReplicaSet in the yaml file and remove fields specific to deployment. The same behavior will be available even with deployment sets. 1 Answer. (kind: ReplicaSet) ReplicaSet (rs) functions are almost identical to ReplicationController. spec. Kubernetes deployment drawbacks. Untuk ReplicaSet, nilai dari kind yang memungkinkan hanyalah ReplicaSet. 1 Answer. Query parameters; Parameter Type Description; continue. Replicaset will acquire the pods which are. kubectl create -f my-replica-set. Get the revision number of the deployment. Each new ReplicaSet updates the revision of the Deployment. apps/my-rs created $ kubectl get pods NAME READY STATUS RESTARTS AGE my-rs-2fncm 1/1 Running 0 10s my-rs-4dlvl 1/1 Running 0 10s my-rs-bb698 1/1 Running 0 10sReplicaSet 的目的是维护一组在任何时候都处于运行状态的 Pod 副本的稳定集合。 因此，它通常用来保证给定数量的、完全相同的 Pod 的可用性。 ReplicaSet 的工作原理 RepicaSet 是通过一组字段来定义的，包括一个用来识别可获得的 Pod 的集合的选择算符、一个用来标明应该维护的副本个数的数值、一个. io/master:}, that the pod didn't tolerate. name that you specified in your Ops Manager resource definition. - kubernetes-exercises/replica_set. Let’s use a ReplicaSet to scale up to five instances of our kuard container. kind: ReplicaSet. yaml. Replicaset rather than the replication controller is used by other objects like deployment. Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer?. A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time.