Query parameters; Parameter Type Description; continue. copy. com. If a Pod from the ReplicaSet fails, it automatically creates an additional Pod from the. - apiVersion: apps/v1 kind: ReplicaSet name: router-default-66d5cf9464 uid: d81dd094-da26-11e9-a48a-128e7edf0312 controller: true blockOwnerDeletion: true. Get replicaset. Labels are like tags that identify and categorize Kubernetes objects. Filter them further to find the one with the correct revision number. io/master:}, that the pod didn't tolerate. name of the resource to the spec. Annotations provides additional information about an object, such as build information or. When the control plane creates new Pods for a ReplicaSet, the . A ReplicaSet ensures that a specified number of pod replicas are running at any given time. spec. This video demonstrates Kubernetes pods, ReplicaSets, and deployments, deploying examples of each. Every one of them is a member of the Kubernetes ReplicaSet. And Replica Set manages the basic units in Kubernetes - Pods. For example, by deploying OPA as an admission controller you can: Require specific labels on all resources. template: metadata: labels: my-label: my-value. 1 Kubernetes version: v1. Deployment is an abstraction over ReplicaSet. Then you need to define the other. These fields are shared by all k8s resource types. This name will become the basis for the ReplicaSets and Pods which are created later. ReplicaSet YAML. Provide details and share your research! But avoid. I'm trying to deploy mongodb with the kubernetes operator on AWS EKS with EFS for the storage class. In this case (the example above), we’re creating a ReplicaSet. 1 Answer. kubectl delete pods <pod> --grace-period=0 --force. It. This way I want to be able to make changes to the pod's system/image (haven't exactly figured out it's name) that at the moment it read-only file system. The example below creates a ReplicaSet using a YAML file:. In order to do that, you need to create a kind: Service for each of your ReplicaSet. 5. metadata. Servers that do not implement bookmarks may ignore this flag and bookmarks are sent at the server's discretion. $ kubectl run my - nginx -- image = nginx -- port 80. Configure an S3 bucket to use as the S3 snapshot store. To create a replica said execute the following command. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. a replicaset (web-65899c769f), a pod (web-65899c769f-dhtdx). For clarification - I meant container. Step 1. Does Kubernetes GET API actually support fieldSelector parameter to query values of array fields?. 3. It's mainly used by Deployment as a. metadata. You need to complete all steps, certificate issuance cannot be. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. The basic format is <server_name> <keytype> <base64-encoded_key>, one entry per line. apiVersion: apps/v1. metadata. I’ve been trying to deploy a ReplicaSet with YAML. Podの雛形 (Pod Template)を定義し、Label Selectorという方法で管理対象を. Core. 9) is a Kubernetes resource used to manage stateful applications. A new ReplicaSet is created and the Deployment manages moving the Pods from the old ReplicaSet to the new one at a controlled rate. The other possible approach to attain replication is by using ReplicaSet. The kind will be ReplicaSet, for obvious reasons; Metadata will contain the name and labels. metadata: It contains the metadata for the ReplicaSet, such as its name. metadata. We run the following command in k8s. name of the ReplicaSet is part of the basis for naming those Pods. template: here we specify the specs of the Pods to be created by this replicaset. kubectl create -f my-replica-set. Create pods. metadata. Any existing pods under that controlling object are recreated on a node with a matching label. Remember the Replicaset definition from the beginning? Its first two fields apiVersion and kind specify the group/version and kind (=resource type). Here, it's a ReplicaSet. For example :While creating ReplicaSet, I am getting following error: The ReplicaSet "julrs" is invalid: spec. The API version apps/v1beta2 is deprecated. yaml. . Try using one envFrom with multiple entries under it as below: - name: integration-app image: my-container-image envFrom: - secretRef: name: intercom-secret - secretRef: name: paypal-secret - secretRef: name: postgres-secret - secretRef: name: redis-secret. name of the ReplicaSet is part of the basis for naming those Pods. selector ，否则它将被 API 拒绝。. However we also want to delete the replicasets and pods that below to 'our-deployment-name'. These manifests should result in the creation of two pods as part of the hello-world ReplicaSet, and a hello-world service resource with an external-facing load balancer, if the cloud provider and cluster network supports it. Labels, selectors, and annotations are key concepts in Kubernetes for managing objects. Step 1: Create a ReplicaSet with three PODs Step 1. 3. A Kubernetes ReplicaSet is a control loop that ensures a specified number of pod replicas are running at any given time. A ReplicaSet’s purpose is to maintain a stable set of replica. The Replicaset monitors the Pods that have the same label as the one specified in this selector field. # kubectl delete rs soaktestrs replicaset "soaktestrs" deleted # kubectl get pods Again, the pods that were created are. First, copy the sample config to a new directory:. 8 user guide shows how to create a deployment in. The manifest above would run three replicas of the . Selectors allow users to choose a specific subset of objects based on a shared set of labels. Mounts: <none> Volumes: <none> Conditions: Type Status Reason ---- ----- ----- Progressing True NewReplicaSetAvailable Available False MinimumReplicasUnavailable ReplicaFailure True FailedCreate OldReplicaSets: <none> NewReplicaSet: integrated-repository-webapp-d69879c5f (0/1 replicas created) Events: Type Reason Age From. As you said, you created 3 web based micro-service. list or watch objects of kind ReplicaSet. ReplicaSet is the next-generation ReplicationController that supports the new set-based label selector. spec. Building on replication controllers, OpenShift Container Platform adds expanded support for the software development and deployment lifecycle with the concept of DeploymentConfig objects. Additional fields in . Pod Environment variable; apiVersion: v1 kind: Pod metadata: name: static-web labels: role: myrole spec: containers: - name: nginx image: nginx env: - name: DB_NAME value: MyDB - name: DB_URL valueFrom: configMapKeyRef: name: config-url key: db_url - name: DB_PASSWORD valueFrom: secretKeyRef: name:. The continue option should be set when retrieving more results from the server. 9, the default garbage collection policy for many controller resources was orphan . 16 replicaset was moved to apps/v1 apiVersion from extensions/v1beta1. Clients should not assume bookmarks are. Saved searches Use saved searches to filter your results more quicklyFor instance, ReplicaSet invalidates its cache when the selector changes. So the apiVersion of ReplicaSet will be apps/v1. name of the ReplicaSet is part of the basis for naming those Pods. Via a label selector, the client/user can identify a set of objects. The selector is used to identifying the Pods it can acquire. It default to 1 if it was not. apiVersion: apps/v1 kind. This is an essential mechanism for managing and scaling the Pods in a Kubernetes cluster. name of the ReplicaSet is part of the basis for naming those Pods. Because you need a deployment object - or other Kubernetes API objects like a replication controller or replicaset - that needs to keep the replicas (pods) alive (that's. Discuss on Discord. What did you expect? Mongodb-agent ready and cluster OKHello, I have a . A ReplicaSet is a Kubernetes object that ensures that a specified number of replicas of a pod are running at any given time. When the control plane creates new Pods for a ReplicaSet, the . Here the deployment type is chosen as ReplicaSet using the kind option. Al igual que con el esto de los objeto de la API de Kubernetes, un ReplicaSet necesita los campos apiVersion, kind, y metadata. This entry was posted in Docker, Kubernetes and tagged Cluster, Docker, Docker Swarm, Kubernetes, Orchestrator, Pod, ReplicaSet, Scheduler, Service on December 15, 2017 by Viktor Farcic. The pod template specifies the characteristics of the pods that the ReplicaSet manages. 4, you should omit the --force option and use: kubectl delete pods <pod> --grace-period=0. metadata. spec: replicas: 3. Does Kubernetes GET API actually support fieldSelector parameter to query values of array fields?. It's mainly used by Deployment as a mechanism to orchestrate pod creation, deletion and updates. kubectl create -f my-replica-set. 26. root@cyberithub:~# kubectl get pods -l tier=nginx NAME READY STATUS RESTARTS AGE replicaset-1-nhvlq 1/1 Running 0 16m replicaset-1-mrj7v 1/1 Running 0 16m. below is the yaml file:kind: type of object trying to be created. If the Labels of a. This procedure allows you to set different settings for the replica set resource, such as overrides for statefulSet configuration. Query parameters; Parameter Type Description; allowWatchBookmarks. If the pod disappears for any reason, such as in the event of a node. There is a tutorial at operator github pages. The first two lines define the API version to be used (v1) and what the YAML file will be deploying (ReplicaSet). docker-compose. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. Finally, the "spec" is the most important part of our YAML file. Match the metadata. . Developed by MongoDB, MongoDBMulti Custom Resource Definition (CRD) makes it easy to run MongoDB replica sets across multiple Kubernetes environments and provides a declarative approach to deploying MongoDB, allowing users to specify the desired state of their deployment and letting the operator handle the details. We also define a number of labels through which we can identify it. What did you do to encounter the bug? Steps to reproduce the behavior: Deploy replica set with members:1 (with tls and replicaset horizons enabled) Scale up replica set to members:3 (with tls and replicaset horizons enabled) Scale down r. By using the command kubectl delete rs <rs name>, where rs name is the name of your ReplicaSet, you can destroy ReplicaSets. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. The controller that Kubernetes going to create through YAML file will be defined by the parameter kind which will be set as ReplicaSet in this case. name of the ReplicaSet is part of the basis for naming those Pods. It provides the same function (through. Get all pods with the labels plus the pod template hash. Share. Pada Kubernetes 1. Under the hood, Deployment creates a ReplicaSet which in turn creates pods on our cluster. Here name and labels are. kubectl commands for replication set. When the control plane creates new Pods for a ReplicaSet, the . Table 7. spec is where you define the desired state and specifications for the ReplicaSet. Deployments and Deployment Configurations. Untuk ReplicaSet, nilai dari kind yang memungkinkan hanyalah ReplicaSet. See morekind: ReplicaSet. The label selector is the core grouping primitive in Kubernetes. Bson all with version number 2. Kind: Defines the resource as a ReplicaSet for the Kubernetes API. You can use the kubectl expose command to create a NodePort Service for a ReplicaSet. Use the kubectl create and kubectl apply commands to create ReplicaSets. While Kubernetes, both natively and through ingress controllers, offers a number of ways to expose a service, we will use the standard Service resource of type LoadBalancer. Add unique labels to the deployment's template. I couldn't figure, whether the issue is with my code or api resources. affinity. ReplicaSet is an evolution of ReplicationController. apiVersion: v1 kind: Pod metadata: labels: test: liveness name:. The ReplicaSet configuration defines a number of identical pods required, and if a pod is evicted or fails, creates more pods to compensate for the loss. Description Clayton Coleman 2019-05-23 07:15:51 UTC. 9$ kubectl create -f replicasets. It's very strange. 2. replicas: 5 indicates that you want to maintain five replicas of the. 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. ReplicaSet. If you want to clean it manually you can just paste that in your console. 1. . 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. This controller manages the state of ReplicaSets and the Pods within it. apps | grep "0 0 0" | cut -d' ' -f 1) This only works because of the way kubectl get all displays resources. 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. This will give you a detailed explanation of the resource passed as an argument as well as the fields you can populate. [root@localhost ~]# vi autoscale. "This integration runtime is being used by the other 23 linked services, they are all working fine. Kubernetes troubleshooting is the process of identifying, diagnosing, and resolving issues in Kubernetes clusters, nodes, pods, or containers. We no do deploy or manual changes. metadata: data about object at issue. StatefulSets address this by guaranteeing that each Pod in the ReplicaSet maintains its identity. Note: we can ignore the service named kubernetes in the example above; that one already did exist before our kubectl run command. com. spec can be used such as minReadySeconds, paused and more. It also. ReplicaSetCondition describes the state of a replica set at a certain point. 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 an example, you could be deploying a MySQL database with a primary instance and two read-only replicas. The selector and matchingLabels is used by the replicaset to monitor other pods as well who have the matching labels. selector: matchLabels: my-label: my-value. Every one of them is a member of the Kubernetes ReplicaSet. Deployments control the updating of its underlying entities. By adjusting the value in the manifest and re-applying it, you can alter the number of copies (kubectl apply -f my-manifest. A new ReplicaSet is created and the Deployment manages moving the Pods from the old ReplicaSet to the new one at a controlled rate. metadata. In this article, we will look into how to connect Replicaset to a. It is responsible for maintaining the desired state of a set of pods in a cluster. After our query, see these Deployments create new ReplicaSet and it's yaml the same with old ReplicaSet, and evnet log display , scale up new pod, and then scale. The ReplicaSet is a very useful basic building block in Kubernetes that other objects, like the Deployment object, rely on. yaml’, and we will be submitting this. Deploy Replica Sets on OpenShift . 3-py3-none-any. spec. 決めた分だけ Pod の起動を維持してくれるし、これで事足りる。. With ReplicaSet you define number of replicas you want to run for a specific application or a service. For example a deployment selects a group of pods by a. name of the ReplicaSet is part of the basis for naming those Pods. The main difference is that a ReplicaSet does not allow a rolling-update strategy. 4. Overview & Architecture Edit. Hence the yaml should be as below. apps | grep "0 0 0" | cut -d' ' -f 1) This only works because of the way kubectl get all displays resources. . I'll post my answer with the full code example later if no one else replies to my question. metadata includes the name for the ReplicaSet, which is "my-replicaset". Building on replication controllers, OpenShift Container Platform adds expanded support for the software development and deployment lifecycle with the concept of deployments. Here, this replicaset will monitor Pods with the label tier: frontend. Hashes for kubesplit-0. apiVersion: apps/v1 kind: ReplicaSet metadata: name. Is that possible ?リソース 役割; Deployment: ReplicaSetを生成、管理しローリングアップデートやロールバックといったデプロイ管理を行います。: ReplicaSet: 同じ仕様のPodのレプリカ数を管理します。ReplicationControllerの後継に当たるものです。: Pod: アプリケーションを動かすための最小単位。kubectl create -f replicaset. Difference between Kubernetes Replication Controllers and Replica Sets. Similarly, if the ReplicaSet discovers an extra pod in the group, it will randomly delete one of the Kubernetes replicas in circulation. Get the revision number of the deployment. metadata. 24 commits. If one Pod goes down in a ReplicaSet, another will be created to replace it. Asking for help, clarification, or responding to other answers. In kubernetes 1. As with just about everything related to Kubernetes, we define our ReplicaSet via a YAML file. collection: Conditional: Add this parameter and values if you need your database to be accessed outside of Kubernetes. For ReplicaSets, the kind is always a ReplicaSet. Here, it's a ReplicaSet. 对于 ReplicaSet 而言，其 kind 始终是 ReplicaSet。 当控制平面为 ReplicaSet 创建新的 Pod 时，ReplicaSet 的 . Use this procedure to deploy a new replica set that Ops Manager. ReplicaSet. spec section is similar to the ReplicaSet’s, defining the pod template for each replica. Hence the yaml should be as below. 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. The replicaSet controller ensure that three pods are running at any point of time in the cluster. This is achieved by creating or removing. Similar to a ReplicationController, a ReplicaSet is a native Kubernetes API object that ensures a specified number of pod replicas are running at any given time. Build your first docker image. To create and set up the Kubernetes replica set, we have to follow the below steps: 1. The first Spec lets you declare what the ReplicaSet should appear like and the. A ReplicaSet is a Kubernetes object that runs multiple instances of a pod and ensures a certain number of pods is running at all times. Update the replicas of the. In Kubernetes, you do not create ReplicaSets directly. In the MongoDB spec section, the type of deployment was defined as ReplicaSet with the desired number of replicas of 3. This will cause the deployment controller to create a ReplicaSet, with one replica (which means it will only start one pod). spec section is similar to the ReplicaSet’s, defining the pod template for each replica. matchLabels field then ensures that only the Pods with the matching labels are controlled by the ReplicaSet. apiVersion: apps/v1. Table 8. kubectl get pods. 9 versi API apps/v1 pada kind ReplicaSet adalah versi saat ini dan diaktifkan secara default. 因為沒有創建ReplicaSet或是任何有相關的排序，所以只能delete or scale up/down。 DaemonSet 這個簡單來說就是在每一個Node都會跑一個Pod，所以不管是新增. As with all other Kubernetes API objects, a ReplicaSet needs the apiVersion, kind, and metadata fields. When trying to set up a pod to pull the image i see CrashLoopBackoff. To deploy the operator on OpenShift you will have to provide the environment variable MANAGED_SECURITY_CONTEXT set to true for the operator deployment. 5. apiVersion: apps/v1 kind: ReplicaSet metadata: A new ReplicaSet is created and the Deployment manages moving the Pods from the old ReplicaSet to the new one at a controlled rate. As an alternative to using this procedure, you can use. To begin with, create an Express app first. You are defining the name and labels of the. conditions. Once the MongoDB resource is created, the operator will deploy a new. We will use the following YAML file to create our ReplicaSet. Replicaset is one of the Kubernetes controllers. and you can actually do what you want , just use your pod as here in template spec. The difference between a replica set and a replication controller is that a replica set supports set-based selector requirements whereas a replication controller only supports. Openshift Depoyment create replicaset the same with old. Kubernetes troubleshooting is the process of identifying, diagnosing, and resolving issues in Kubernetes clusters, nodes, pods, or containers. Provide details and share your research! But avoid. Below is an example of a. Since this value is server defined, clients may only use the continue value from a previous query result with identical query parameters (except for. The Deployment creates a ReplicaSet that creates three replicated Pods, indicated by the . If you use Deployments to manage your Kubernetes workloads, and most people do, then they will leave behind one ReplicaSet for each change you make. ReplicaSetCondition describes the state of a replica set at a certain point. Try switching to an image that is intended to have a long running/always running process, e. For example, by deploying OPA as an admission controller you can: Require specific labels on all resources. 6" security: authentication: modes: ["SCRAM"] users: - name:. tier: Backend → We have defined the label tier as backend which creates a matching selector. yml. selector. Trong định nghĩa spec trên thì “kind: ReplicaSet” là tên đối tượng Kubernetes mà chúng ta cần tạo với name và các Label được gán cho đối tượng ReplicaSet này được định nghĩa trong phần metadata. Rollback to an earlier Deployment revision if the current state of the Deployment is not stable. 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. yaml file are mounted in the Prometheus container in the /etc/config folder. list or watch objects of kind ReplicaSet. En la versión 1. apiVersion:. Let’s create a replicaset to understand this. The spec part is mandatory in the ReplicaSet object. The user can specify a different scheduler for the Pods of the DaemonSet, by setting the . The ReplicaSet controller guarantees that a specified number of identical Pods is running at all times. spec 部分分为 副本数、选择器(选择算符)、Pod模板三个部分。 Replicas. 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. Podの雛形 (Pod Template)を定義し、Label Selectorという方法で管理対象を. Persistent Volume Claim It is a kind of formal request from user for claiming a persistent volume. Procedure. It can be used to reliably run a single Pod indefinitely or to run multiple instances of the same Pod. A ReplicaSet (RS) is a Kubernetes object that ensures there is always a stable set of running pods for a specific workload. Setup KinD. DeploymentとReplicaSetとPod. kubernetes. In this way, Kubernetes is self-healing. (kind: Deployment)list or watch objects of kind ReplicaSet. func NewForConfigAndClient (c * rest. replicasetは特定のラベルのついたpodを監視している。 さっき見たみたいにレプリカ数が不足している場合は新たにpodが作成される。 それに対し、レプリカ数が過剰に存在している場合は該当するpodの内のpodをレプリカ数と同じ数になるように削除する。55 Thomson Place 2nd Floor Boston, MA 02210 Tel: +1 617 837 6840apiVersion: apps/v1 kind: ReplicaSet metadata: name: myapp2-rs spec: replicas: 3 # 3 Pods should exist at all times. Clients should not assume bookmarks are. 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. yaml": no matches for apps/, Kind=ReplicaSet . Selector helps us to filter the items/objects which have labels attached to them. To set deployment resources, choose one of the above options. 1 Answer. 1. I am pretty new to Kubernetes Whenever one of theStep 1: Create ReplicaSet in Kubernetes Using YAML File. busybox default to the docker command sh which opens a shell and because the container is neither not started with a terminal attached the sh process exits immediatly after container startup leading to the CrashLoopBackOff Status of your pods. When you create a ReplicaSet, you are essentially telling Kubernetes that you want a specific pod replicated x amount of times. ReplicaSetは指定された数のPodを複製し、実行してくれる。. apiVersion: v1 kind: Pod metadata: labels: run: redis name: redis spec: containers: - image: redis name: redis Save this as redis-pod. docker run <image id from build> Share Improve this answerHere is the sample template for single PersistentVolumeClaim with name : claim1 apiVersion: "v1" kind: "PersistentVolumeClaim" metadata: name: "claim1" spec: accessModes: - "ReadWriteOnce"For ReplicaSets, the kind is always a ReplicaSet. This is the type of Kubernetes object. The original node affinity specified at the . If you use Deployments to manage your Kubernetes workloads, and most people do, then they will leave behind one ReplicaSet for each change you make. Replica Set and Replication Controller do almost the same thing. 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. tried to change the apps/v1 to some. Labels, selectors, and annotations are key concepts in Kubernetes for managing objects. my-image:latest. 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. This post is the 4th in our Kubernetes training series, providing DevOps engineers with an introduction to Docker, Kubernetes, and Octopus. Now, we know that the deployment we created earlier on has a configuration report. We'll try to identify the cause based on these. Once the Operator is installed, we can go ahead and deploy MongoDB. Some possible values are Pod, ReplicaSet, Deployment and it is a CASE SENSITIVE string. list or watch objects of kind ReplicaSet. Sorted by: 1. It creates and replaces pods as necessary. 2 then MongoDBCommunity v6. Delete the ReplicaSet Let's clean up before we move on. Then, it’ll gradually move the Pods from the old ReplicaSet to the new one at a controlled rate. It helps the replicaSet to identify what pods fall under it because replicaSet can also manage pods that are not created as a part of the replicaSet creation. Let’s break down the contents of the file. Both of them ensure that a specified number of pod replicas are running at any given time. Sorted by: 77. metadata: data about object at issue. A replica set is a group of MongoDB deployments that maintain the same data set. apiVersion: apps/v1 kind: ReplicaSet Metadata: name: some-name labels: app: some-App tier: some-Tier Spec: replicas: 3 # Here we tell k8s. metadata. Below is the YAML I'm using for the deployment . In a nutshell label selectors depend on labels to select a group of resources such as pods. Code. The config is saved to the Kubernetes Secret. For ReplicaSets, the kind is always just ReplicaSet. It default to 1 if it was not. $ kubectl run my - nginx -- image = nginx. Xin chào các bạn, chúng ta lại tiếp tục với series k8s basic để cùng nhau làm quen với k8s. list or watch objects of kind ReplicaSet. tier: Backend → We have defined the label tier. svc. Create the file with the command: nano rs. mongodbResourceRef. The above RS manifest file uses a ReplicaSet to run three copies of the my-image: latest container image. For ReplicaSets, the kind is always a ReplicaSet. EDIT: to be extra clear: "Cannot create cluster due to docker exec cat /kind/version failing" is a symptom, please file an issue with the details on your specific. ReplicaSet is a Kubernetes object that provides declarative scaling for Pods. A regular ReplicaSet or Deployment would not be appropriate because you couldn't reliably identify the Pod running the primary replica. Creating Pods and RCs works . 4. Use the same way to create deployment and modify kind to ReplicaSet in the yaml file and remove fields specific to deployment. kind: 오브젝트 종류를 명시하는 항목으로 ReplicaSet으로 지정합니다. Create a deployment via kubectl run, as shown below. Procedure. It default to 1 if it was not.