yaml. image: my-image:latest. Hello, I have a . However we also want to delete the replicasets and pods that below to 'our-deployment-name'. Quoting from Kubernetes Operator reference: This method to use split horizons requires the Server Name Indication extension of the TLS protocol. apiVersion: apps/v1 kind. If the pod disappears for any reason, such as in the event of a node. For ReplicaSets, the kind is always a ReplicaSet. Metadata:-it contains the information related to ReplicaSet. Both of them ensure that a specified number of pod replicas are running at any given time. 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. below is the yaml file: kind: type of object trying to be created. 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. ReplicaSet. boolean. Filter them further to find the one with the correct revision number. Kubernetes deployment drawbacks. yaml. 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:. metadata: name: my-replicaset. The Deployment creates a ReplicaSet that creates three replicated Pods, indicated by the. A ReplicaSet provides basic scaling mechanisms for pods, such as creating new pods if. name of the ReplicaSet is part of the basis for naming those Pods. Kubernetes docs talk more about it. I found this trick though till I could find a better way. name values hence they both have their own isolated resources. สวัสดีครับ กลับมาเจอกันอีกครั้งกับ Series “Kubernetes Zero-2-Hero” ใน EP. When choosing between Deployment and ReplicaSet, consider the level. 2. Servers that do not implement bookmarks may ignore this flag and bookmarks are sent at the server's discretion. The simplest method that comes to mind when we need to run a Singleton Pod in Kubernetes is 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 . A ReplicaSet is a process that runs multiple instances of a Pod and keeps the specified number of Pods constant. 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. Kubernetes对象之Pod. "This integration runtime is being used by the other 23 linked services, they are all working fine. A ReplicaSet ensures that a specified number of pod replicas are running at any given time. 说到ReplicaSet对象，得先说说ReplicationController（简称为RC）。. Labels are like tags that identify and categorize Kubernetes objects. below is the yaml file:kind: type of object trying to be created. Setting the replicas count to 1 seems to do the trick. apiVersion: apps/v1 kind: ReplicaSet metadata. You can use the kind: deployment can check kubectl get rc still replica set will be there. spec can be used such as minReadySeconds, paused and more. matchLabels field then ensures that only the Pods with the matching labels are controlled by the ReplicaSet. Some possible values are Pod, ReplicaSet, Deployment and it is a CASE SENSITIVE string. spec. Kubernetes 1. Below is the YAML I'm using for the deployment . The operator creates a config (and updates it) for the agent’s sidecar container responsible for configuring MongoDB in each Pod. Use the same way to create deployment and modify kind to ReplicaSet in the yaml file and remove fields specific to deployment. yml manifest and use kubectl create or kubectl apply to create the deployment. Instead of ReplicaSet, you can use Deployment or StatefulSet. 2 นี้เราจะแนะนำ. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. 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. StatefulSet (stable-GA in k8s v1. {key: tier, operation: In, values:. Create a ReplicaSet: kubectl create . simplifies and automates the management of security certificates for Kubernetes. yaml and run this command to create the container. Overview & Architecture Edit. This controller manages the state of ReplicaSets and the Pods within it. name of the ReplicaSet is part of the basis for naming those Pods. Let’s break down the contents of the file. The pods are called replicas and are the mechanism of availability in Kubernetes. Replicaset is one of the Kubernetes controllers. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. kubectl get pods. yaml": no matches for apps/, Kind=ReplicaSet . Difference between Kubernetes Replication Controllers and Replica Sets. list or watch objects of kind ReplicaSet. Table 7. A Deployment owns and manages one or more ReplicaSets. this may be used to filter the deployment based on this label. My 2 cents on the subject, don't mix POD status with Container status (it's true that they're correlated). The. metadata. 1 ReplicaSets in a nutshell1. The example below creates a ReplicaSet using a YAML file:. 2 then MongoDBCommunity v6. 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. Replace with the desired MongoDB deployment name -- this should be the same as in the previous step. The following command installs the MongoDB Enterprise Kubernetes Operator in the mongodb namespace with the optional --create-namespace option. selector: # Pods label should be defined in ReplicaSet label selector matchLabels: app: myapp2 template: metadata: name: myapp2-pod labels: app: myapp2 # Atleast 1 Pod label should match with. The alerts and rules keys in the serverFiles group of the values. spec 部分分为 副本数、选择器(选择算符)、Pod模板三个部分。 Replicas. The only requirement was, they match the amount of replicaset instances. 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. We also define a number of labels through which we can identify it. Query parameters; Parameter Type Description; allowWatchBookmarks. ReplicaSetCondition describes the state of a replica set at a certain point. If the Labels of a. 9 版本中，API. As such, it is often used to guarantee the availability of a specified number of identical Pods. 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。. Step 1: Create a ReplicaSet with three PODs Step 1. OwnerReferences[0]. 第5章 Deployment. #Get list of Pods kubectl get pods kubectl describe pod <pod-name> # Get list of Pods with Pod IP and Node in which it is running kubectl get pods -o wide Also, the apiVersion of replicaSet is apps/v1. 3. Create a deployment via kubectl run, as shown below. Let’s use a ReplicaSet to scale up to five instances of our kuard container. The main difference is that a ReplicaSet does not allow a rolling-update strategy. kind: ReplicaSet. yml). The operator creates a Pod with one init container and two app containers on it. First, check the existing replica set using the following command. Building on replication controllers, OpenShift Container Platform adds expanded support for the software development and deployment lifecycle with the concept of deployments. collection: Conditional: Add this parameter and values if you need your database to be accessed outside of Kubernetes. cluster. Creating a Kubernetes ReplicaSet. whl; Algorithm Hash digest; SHA256: 94beb3553b2127c97680ad9f14c588b4189d15c286e177e3f70c2dd4b7fa0998: Copy : MD5Deploy CRDs and ReplicaSet. Try switching to an image that is intended to have a long running/always running process, e. Kubernetes troubleshooting is the process of identifying, diagnosing, and resolving issues in Kubernetes clusters, nodes, pods, or containers. so you must need to add template field . kubectl delete $ (kubectl get all | grep replicaset. Procedure. 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. tier: Backend → We have defined the label tier. This will likely be a ReplicaSet (which is generated by the Deployment). 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. 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. In this example, the command will fetch all Pods that have the. ReplicaSet YAML. Config, h * Client) (* AppsV1Client, error) NewForConfigAndClient creates a new AppsV1Client for the given config and client. Once the Operator is installed, we can go ahead and deploy MongoDB. This helps to ensure that the desired state of the system is maintained. The job of a ReplicaSet is to maintain a stable number of Pod copies or replicas. By. 3. 2 answers to this question. 1. 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. The ReplicaSet is a very useful basic building block in Kubernetes that other objects, like the Deployment object, rely on. Here in our case it is ReplicaSet. En la versión 1. It should also create a Kubernetes Endpoint resource with two entries in the host:port notation, one for each of the pods,. Query parameters; Parameter Type Description; allowWatchBookmarks. Sorted by: 77. 2. Using YAML file to create ReplicaSet in Kubernetes is quite popular and is also the most preferable way. It creates and deletes Pod(s) as needed to reach the desired number. Podの雛形 (Pod Template)を定義し、Label Selectorという方法で管理対象を. StatefulSets address this by guaranteeing that each Pod in the ReplicaSet maintains its identity. Hashes for kubesplit-0. Labels, selectors, and annotations are key concepts in Kubernetes for managing objects. 9, the default garbage collection policy for many controller resources was orphan . ReplicaSet is the next-generation ReplicationController that supports the new set-based label selector. I found this with trial and error, so this is the diff file. ReplicaSet is a lower-level abstraction that provides basic scaling mechanisms. com, mongo-replicaset-2. In fact, you need to forget about the notion of pod. spec: replicas: 3. We also define a number of labels through which we can identify it. Here are the details: I'm using Nuget packages: Mongo. Remember the Replicaset definition from the beginning? Its first two fields apiVersion and kind specify the group/version and kind (=resource type). ownerReferences field, to tell which resource owns the current Pod(s). metadata. Share. Deployment. kind: ReplicaSet; The main difference between replicationController and replicaSet is, the replicaSet requires a field named selector as a child of main spec. StatefulSets. 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 Deployment creates a ReplicaSet that creates three replicated Pods, indicated by the . When the control plane creates new Pods for a ReplicaSet, the . This is awkward and complex. labels 必须匹配 . However, We got an alert at night. 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. You are defining the name and labels of the. schedulerName field of the DaemonSet. But changing. If you want to clean it manually you can just paste that in your console. I tried it with several different files and also the samples from the K8s documentation, but all result in this failure. Deployments can do the following; Create instances of running applications as ReplicaSets. Share. template is the actual pod spec with which you. . kind: ReplicaSet. We no do deploy or manual changes. Step 2: Edit the replicas property to the desired number of replicas: apiVersion: apps/v1 kind. svc. The goal is to ensure that the applications running in the pods have enough resources and do not experience downtime, even if one or more pods fail. For this the recommended approach is to use a Deployment, which under the hood create a ReplicaSet. If you’re using any version of kubectl <= 1. name of the ReplicaSet is part of the basis for naming those Pods. When the control plane creates new Pods for a ReplicaSet, the . 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. the ReplicaSet controller cant directly interact with Pods to perform exec or requests (only the kubelet can) possible workaround (might be too complex): the ReplicaSet controller chooses the Pods in the sample; the ReplicaSet controller "marks" these Pods to be probed; the kubelet probes the Pods and creates a Pod-event with the. Template is not a list ( so you are overwriting the template), instead you just need one template for the pod creation , and inside the pod you will have multiple containers then. The Replicaset monitors the Pods that have the same label as the one specified in this selector field. If you want to clean it manually you can just paste that in your console. The number of ready replicas for this replica set. 63 <none> 443/TCP 8m54s. 9 the API version apps/v1 on the ReplicaSet kind is the current version and is enabled by default. allowWatchBookmarks requests watch events with type "BOOKMARK". We will setup a single node Kubernetes cluster on our local machine using KinD (Kubernetes in Docker). 8-eks-7c9bda Webhook Version: How do. you can't create replicaset without spec. Its functionality is based on the notion of desired vs. 7 is the version used. Kubernetes 1. Al igual que con el esto de los objeto de la API de Kubernetes, un ReplicaSet necesita los campos apiVersion, kind, y metadata. 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. This is a template that may be useful: kubectl expose rs <REPLICASET_NAME> --port=<PORT> --target-port=<TARGET_PORT> --type=NodePort The most important flags are: NOTE: Detailed information on this command can be found. For example, if you want to have four pods running at all times and one of them suddenly crashes, a ReplicaSet will ensure that the crashed one is removed and will spin up a new, hopefully healthy, one. The template includes specifications such as container. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. Servers that do not implement bookmarks may ignore this flag and bookmarks are sent at the server's discretion. The differences in this manifest are: Using kind: Deployment to state the resource type. The ReplicaSet is also responsible for creating and managing pods based on a template specification. Add a comment. In the simplest case, a deployment just creates a new replication controller and lets it start up pods. Key features and functionality of ReplicaSet. For example, in a StatefulSet deployment called “statest”, the pod “statest-0” will be created first, then “statest-1”, and so on. error: unable to recognize "kubia-replicaset. 1 Answer. Driver and MongoDb. The pod template specifies the characteristics of the pods that the ReplicaSet manages. 3 Answers. To keep Pod running continuously you must specify a task that will never finish. For example, I have a Pod like: apiGroup: v1 kind: Pod metadata: ownerReferences: - apiVersion: apps/v1 blockOwnerDeletion: true controller: true kind: ReplicaSet name: grpc-ping-r7f8r-deployment-54d688d777 uid: 262bab1a-1c79-11ea. apiVersion: apps/v1 kind: Deployment metadata: name. name of the ReplicaSet is part of the basis for naming those Pods. Add the desired label. ReplicaSetについて. Create a deployment manifest yaml file - deployment. When the control plane creates new Pods for a ReplicaSet, the . Now we have the KIND value i. 1: Check that Namespace has not ReplicaSets. The Deployment creates a ReplicaSet that creates three replicated Pods, indicated by the . apiVersion: apps/v1. io/master:}, that the pod didn't tolerate. I’ve been trying to deploy a ReplicaSet with YAML. Here is my VS code, as you can see there are several errors, this code follows the courses code to the T. 2. spec. When the control plane creates new Pods for a ReplicaSet, the . 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:. Bson all with version number 2. Overview & Architecture Edit. I'm managing a kubernetes cluster and there is a duplicate pod that keeps coming back, but the duplicate ReplicaSet controlling it also keeps coming back after deletion. Sorted by: 77. Openshift Depoyment create replicaset the same with old. For example, if you want to have four pods running at all times and one of them suddenly crashes, a ReplicaSet will ensure that the crashed one is removed and will spin up a new, hopefully healthy, one. ReplicaSetについて. list or watch objects of kind ReplicaSet. Kind: Defines the resource as a ReplicaSet for the Kubernetes API. apiVersion: apps/v1 kind: ReplicaSet metadata: name: sync-rs spec: replicas: 4 minReadySeconds: 20 selector: matchExpressions: - {key: platform, operator: In. 6" security: authentication: modes: ["SCRAM"] users: - name:. Under the hood, Deployment creates a ReplicaSet which in turn creates pods on our cluster. The requests object contains the list of resources that correspond to the list of resources in the quota. spec can be used such as minReadySeconds, paused and more. As you can see, it uses the apps/v1 API version, the kind is ReplicaSet, and in this case the name is set to hello-world_v1. I can't really think of more information to share. This branch is 1 commit ahead of go-oauth2:master . Let’s have an example: When you instantiate a ReplicaSet, it creates the desired number of replicas using the pod template. Most common metadata: name. Property Type Description. The selector and matchingLabels is used by the replicaset to monitor other pods as well who have the matching labels. As an example, you could be deploying a MySQL database with a primary instance and two read-only replicas. yaml apiVersion: autoscaling/v1 kind: HorizontalPodAutoscaler metadata: name: web-app-scaler spec: scaleTargetRef: kind: ReplicaSet name: web-app. In the future, when we update the current deployment, it will create a new ReplicaSet. metadata. # kubectl delete rs soaktestrs replicaset "soaktestrs" deleted # kubectl get pods Again, the pods that were created are deleted when we delete the Replica Set. Besides that, it has a spec that specifies that it should make sure that there is always 3 replicas of pods that match the specified label selector in the cluster. selector: This specifies a label selector to identify the pods managed by this ReplicaSet. ReplicaSetは指定された数のPodを複製し、実行してくれる。. Query parameters; Parameter Type Description; allowWatchBookmarks. 9f3dc71 4 minutes ago. ReplicaSet 管理所有标签匹配与标签选择器的 Pod。. The number of ready replicas for this replica set. replicas 来指定要同时运行的 Pod 个数。 ReplicaSet 创建、删除 Pod 以与此值匹配。 A ReplicaSet is defined with fields, including a selector that specifies how to identify Pods it can acquire, a numberof replicas indicating how many Pods it should be maintaining, and a pod template specifying the data of. name field. In this case (the example above), we’re creating a ReplicaSet. When the control plane creates new Pods for a ReplicaSet, the . For kinds in the extensions/v1beta1, apps/v1beta1, and apps/v1beta2 group. As per the name, ReplicaSet is used for managing the replicas of our pods. Prefix/suffix transformer . Replicaset will acquire the pods which are. Set Up a cert-manager Integration. name of the ReplicaSet is part of the basis for naming those Pods. As with all other Kubernetes API objects, a ReplicaSet needs the apiVersion, kind, and metadata fields. A ReplicaSet’s purpose is to maintain a stable set of replica. 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. Radek's answer is very good, but I would like to pitch in from my experience, you will almost never use an object with the kind pod, because that doesn't make any sense in practice. For example, by deploying OPA as an admission controller you can: Require specific labels on all resources. There is container with parameters The container is too old. yaml. template: here we specify the specs of the Pods to be created by this replicaset. There is a tutorial at operator github pages. Yes, that's right. DeploymentとReplicaSetとPod. Pada Kubernetes 1. name of the ReplicaSet is part of the basis for naming those Pods. It is used to make sure that we have a specified number of pod replicas that are always up and running. 8 user guide shows how to create a deployment in. 在旧版本的Kubernetes中，只有ReplicationController对象。. For ReplicaSets, the kind is always a ReplicaSet. For ReplicaSets, the kind is always a ReplicaSet. also, another suggestion don't use the Replicasets by default Deployment create the Replicaset in the background. It will terminate or start new Pods to match the configuration specified in the ReplicaSet template. metadata. This will give you a detailed explanation of the resource passed as an argument as well as the fields you can populate. list or watch objects of kind ReplicaSet. For example, this is my one from my canonical-service-controller-manager pod: $ kubectl get pod -n asm-system canonical-service-controller-manager-67c8f5fff5-dzd4t -o yaml apiVersion: v1 kind: Pod metadata:. kind: This specifies the Kubernetes resource type. Figure 13. However, for most use cases it is recommended to use a Deployment instead of a ReplicaSet. Now, let us create a ReplicaSet from an example from. 3. 1. In this article, we will look into how to connect Replicaset to a. @Jonas I did. Additional fields in . For ReplicaSets, the kind is always a ReplicaSet. 1. Cleanup. Similarly, if the ReplicaSet discovers an extra pod in the group, it will randomly delete one of the Kubernetes replicas in circulation. Clients should not assume bookmarks are. It default to 1 if it was not. mod. Menulis manifest ReplicaSet. This feature allows communication both. spec: containers: - name: app-container. We have n number of different type of objects in Kubernetes, like Pods, ReplicaSet, Deployments, Services, etc. In kubernetes 1. backup. metadata. For ReplicaSets, the kind is always a ReplicaSet. spec. 4. Building on replication controllers, OpenShift Container Platform adds expanded support for the software development and deployment lifecycle with the concept of deployments. Extract the pod template hash from the replica set. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Creating Pods and RCs works . (Several days). ReplicaSet is an evolution of ReplicationController. However, a Deployment is a higher-level concept that manages. Cách ReplicaSet hoạt động. The name of a ReplicaSet must be a valid DNS subdomain value, but this can produce unexpected results for the Pod hostnames. Escribir un manifiesto de ReplicaSet. The spec part is mandatory in the ReplicaSet object. spec section is similar to the ReplicaSet’s, defining the pod template for each replica. kubectl create -f kubia-replicaset. We will setup a single node Kubernetes cluster on our local machine using KinD (Kubernetes in Docker). A ReplicaSet is a set of identical backup Pods maintained on the backend side to ensure a Pod is always available. containers field. yaml": no matches for apps/, Kind=ReplicaSet. selector. yaml. - kubernetes-exercises/replica_set. kind: ReplicaSet metadata: name: 1st-replicaset spec: podSelector: matchLabels: app: Web-app replicas: 5. Please attempt to capture node logs with kind create cluster --retain, kind export logs, and file an issue with the logs uploaded. Labels can be used to organize and to select subsets of objects. Each new ReplicaSet updates the revision of the Deployment. version() in the console it returns 4. It defines: The number of replicas this controller should maintain. 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。. It is an open-source, general purpose, document-based, distributed NoSQL database server that is especially popular with JavaScript projects. 3. As with all other Kubernetes API objects, a ReplicaSet needs the apiVersion, kind, and metadata fields. The continue option should be set when retrieving more results from the server. tier: Backend → We have defined the label tier. This is the file for the ReplicaSet: apiVersion: apps/v1 kind: ReplicaSet metadata: name: myapp-replicaset labels: app: myapp spec: selector: matchLabels: env: production name: nginx replicas: 3 template: metadata: name: nginx. It defines: The number of replicas this controller should maintain. What did you expect? Mongodb-agent ready and cluster OKHello, I have a . 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。. 3. kind: ReplicaSet. replicas: It. 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. 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. replicas: It specifies the desired number of replicas (pods) to maintain. They are followed by a metadata section with fields such as name, labels, etc. Pods can define tolerations, which allow them to be. 16 replicaset was moved to apps/v1 apiVersion from extensions/v1beta1. The following steps assume that you have already. metadata. When intercepting a service that has multiple ports, the name of the service port that has been intercepted is also listed. If one Pod goes down in a ReplicaSet, another will be created to replace it. This will tell you what "owns" the pod. A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. The ReplicaSet configuration defines a number of identical pods required, and if a pod is evicted or fails, it creates more pods to compensate for the loss. 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. com. The differences in this manifest are: Using kind: Deployment to state the resource type. Untuk ReplicaSet, nilai dari kind yang memungkinkan hanyalah ReplicaSet. In the ownerReferences, the name of the owner is set to hello, and the kind is set to ReplicaSet. Kubernetes の実践. labels field to them. ReplicaSetHorizons feature does not work without using SSL/TLS certificates. a replicaset (web-65899c769f), a pod (web-65899c769f-dhtdx). In Kubernetes, a ReplicaSet is responsible for maintaining the desired number of replicas of a pod to ensure high availability and load balancing in handling traffic. One such scenario is when you require a static, unchanging set of pod replicas, where the pod template is unlikely to change over time. You can also verify the pods running with the label tier=nginx using kubectl get pods -l tier=nginx command. To learn more about replica sets, see the Replication Introduction in the MongoDB manual. template.