Get the replica sets list. This replica will further create a pod with name web-app-<replica-set->-<pod-id>. kubectl apply -f [manifest file] Code language: CSS (css) Let’s check the endpoint just to make sure it looks correct. $ kubectl create -f replica. Writing a ReplicaSet manifest. Get all Logs from a specific container in a replica set. deployment "my-nginx" created. Get a idea from yaml file. Share. In case, these pods go down then this replicaset can use it’s template to replace these pods. Certificate. {target} is the name of the pod you want to view logs from;kubectl scale deployment my-deployment --replicas=0. We first create a deployment: kubectl apply -f d. 12. Run the command kubectl get pods and count the number of pods. apps/nginx 1/1 1 1 6m54s. Así, se usa en numerosas ocasiones para garantizar la disponibilidad de un número específico de Pods idénticos. It will show. 在本文中我们将了解如何使用此工具以及最佳使用实践。. Use kubectl get to list all Deployments, Replica Sets and Pods in your default namespace:kubectl get secret mongodb -o jsonpath= "{. The selector and matchingLabels is used by the replicaset to monitor other pods as well who have the matching labels. Here are some examples of field selector queries: metadata. A DaemonSet also needs a . Kubenetes: change hpa min-replica. yaml and repeate for deployment. yaml, apply it and when I run 'kubectl get . Each pod in a StatefulSet backed by a Headless Service will have a stable DNS name. test. kubectl get pods -n <namespace of data controller> Delete the managed instance pod. Key Differences First get a list of all deployments, this is important, because you need it to scale back up when needed: kubectl get deploy -A --no-headers | grep -v 'kube' > deploy_state_before_scale. A ReplicaSet is defined with fields, including a selector that specifies how to identify Pods it can acquire, a numberof replicas indicating. yml. When to use - DaemonSet and/or ReplicaSet?. You can get the name of your replication controller using kubectl get rc. Only when I cleaned up all replica sets with kubectl delete $(kubectl -o name get rs), new replica set was created, and then everything worked again. –. On your second terminal, type this to apply the K8s manifest we just worked on: kubectl apply -f mongo. Replica Sets. 9, la version de l'API apps/v1 pour le type ReplicaSet est la version actuelle et activée par défaut. yaml pod2. $ kubectl apply -f rs. Old Replica set are removed. In this blog post we are going to discuss the ReplicaSet concept in Kubernetes. A link to the MyEd BC portal can be found on the Oak Bay website underReplica Rocks is a Victoria BC company that creates premium resort style outdoor living spaces. it will reset it back to 3. spec. This demonstrates how StatefulSets let you consistently designate Pods as having a specific role. kubectl scale deployment openet-k6 --replicas=0 How will i ensure all pods are scaled down ? I am actually using this command in a shell script , so i can write additional logic to check that . kubectl get nodes -o wide MongoDB® nodes port: You will have a different node port for each MongoDB® node. In addition, there is a special kubectl autoscale command for creating a HorizontalPodAutoscaler object. NAME. txt Install and Set Up kubectl on Windows; Installieren und konfigurieren von kubectl; Kubectl installieren und konfigurieren auf Linux; Kubectl installieren und konfigurieren auf macOS; Installation von Minikube; Einen Cluster verwalten. To learn more about this issue, see Kubernetes Issue 67250. replicas==0)]. Verifying the replica set deployment and accessing the replica set. As with all other Kubernetes API objects, a ReplicaSet needs the apiVersion, kind, and metadata fields. Deploying. Create a deployment via kubectl run, as shown below. Using kubectl, we can apply this definition like: kubectl apply -f orphan. Then use NodeSelector in the deployment/pod. ) Without RS, we will have to create multiple manifests for the number of pods we need. $ kubectl apply -f my-nginx. $ kubectl scale deploy nginx --replicas=0 deployment. The second way is to run the kubectl scale command: Copy. kubectl apply -f creates Replica Sets using a config file: kubectl apply -f replicaset-definition-file. You can get the keys stored in. do kubectl -n my_namespace delete -f new_service. apps "nginx" configured $ kubectl get rs NAME DESIRED CURRENT READY AGE nginx 10 10 10 14m $ kubectl get po. Other Posts. You can view the ReplicaSet by running the following command: $ kubectl get replicaset NAME DESIRED CURRENT READY AGE hello 5 5 5 30s. Here, I’m scaling down the ReplicaSet used in the article’s example to manage two pods instead of four. They don’t cost much just sitting there in Kubernetes’ etcd store, but if you run monitoring or continuous validation tools, they may be slowing you down. This field's replicas value is set to 3 ,indicating that the desired state is to have three identical pods managed by this resource. Install and Set Up kubectl on macOS; Install and Set Up kubectl on Windows; Administer a Cluster. When changing the image I found this to be the most straight forward way to update the . When check the resource in kubernetes. yaml --force. If not: to change this, add . kubectl replace -f replica. If we re-create our replicaSet using the "kubectl create" command, the replicaSet " replica_1" will get re-attached to the pods above. Run Command $ sudo kubectl create -f service. Yes identical Pods. $ kubectl delete all --selector=<key>=<value> -n <namespace> or $ kubectl delete all -l <key>=<value> -n. answered Apr 1, 2016 at 5:16. Follow answered Jun 10, 2020 at 14:30. replicas | contains(0)) | "kubectl delete rs --namespace=(. yml). The controller creates two new pod definitions because we have configured replica value as. Here's a way to do it without AWK, using only kubectl and the built-in jsonpath functionality: kubectl delete replicaset $(kubectl get replicaset -o jsonpath='{ . For example, you can do the following: Set environment variables with --env. yaml. $ kubectl get hpa. Check the track of deployment and even we can use this for. # kubectl get event --field-selector involvedObject. kubectl get pods. Deploy Commands: rollout Manage the rollout of a resource scale Set a new size for a deployment, replica set, or. 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. # Get commands with basic output kubectl get services # List all services in the namespace kubectl get pods --all-namespaces # List all pods in all namespaces kubectl get pods -o wide # List all pods in the current namespace, with more details kubectl get deployment my-dep # List a particular deployment kubectl get pods # List all pods in the. They behave in a similar way, but they have more expressive pod selectors. The same can be achieved with kubectl create -f ( -f is a flag for specifying file. 1. apps/kuard created $ kubectl get deployment,replicaset,pod --show-labels NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE LABELS deployment. DaemonSets create Pods on every node in the cluster by default, unless node selectors constrain them. 1. then you need set the replicas to zero using this command. When we fire delete to remove the resource, it removes the target objects forcefully: $ time kubectl delete rs my-first-replicaset && kubectl get podreplicaset. But when I edit this deployment using the command kubectl edit deployment my-dep2, only changing the version of busybox image to 1. A "rolling deployment" will be performed. $ kubectl get pods -l app=my-app NAME READY STATUS RESTARTS AGE my-rs-5c5f5d5c5c-2vjhx 1/1 Running 0 10s my-rs-5c5f5d5c5c-jv2x2 1/1 Running 0 10s my-rs-5c5f5d5c5c-sz7qx 1/1 Running 0 10s Note: This is just a basic example, in a real-world scenario, you may want to add additional specifications like resource limits, environment variables. Once the Mongodb replicaSet is up, cd into the user-service and execute kubectl create -f . Deleting a ReplicaSet. yaml. Define a command to run using --command. kubectl get replicaset. January 9, 2019. Share. where N is the number of Pods in the replica set. kubectl scale deployment my-deployment --replicas=3. /deployment. A simple case is to create one ReplicationController object to reliably run one instance of a Pod indefinitely. Before you begin Before you begin this tutorial, you should familiarize yourself with the following Kubernetes concepts: Pods Cluster DNS Headless Services. Kubernetes Scale Down Replica set. The following command gives the status of the replica sets: kubectl get rs This will give us a table with the following columns: NAME DESIRED CURRENT READY AGE; my-deployment-74fa83b46b: 4: 4: 4: 12s: Note: This table will be printed out on the terminal. 这是增加部署副本数量的最快、最简. Follow edited Dec 26, 2018 at 9:32. kubectl get pods <pod-name> -o yaml kubectl get pods my-helloworld-rs-c8rrj -o yaml Step-03: Expose ReplicaSet as a Service ; Expose ReplicaSet with a service (Load Balancer Service) to access the application externally (from internet) Sep 16, 2022 at 21:35. This should create the replica sets for MongoDb. yaml This starts rolling out a new replicaset R_new. kubectl get pods --all-namespaces. Normal SuccessfulCreate Created pod: frontend-9si5l $ kubectl get pods NAME READY STATUS RESTARTS AGE frontend-9si5l 1/1 Running 0 1m frontend-dnjpy 1/1 Running 0 1m frontend-qhloh 1/1 Running 0 1m ReplicaSet as an Horizontal Pod Autoscaler target. 7k 2 38 55. programming-kubernetes. This post assumes you have a basic understanding of pods, minikube, and kubectl. 3. Share. Deleting Replica Set. Pour ReplicaSets, l'attribut kind est toujours ReplicaSet. 2. yaml in which a deployment, whose strategy is RollingUpdate, is defined. Lowering the replica count will cause. kubectl logs -f deployment/myapp -c myapp --tail 100 -c is the container name and --tail will show the latest num lines，but this will choose one pod of the deployment, not all pods. kubectl get storageclass NAME PROVISIONER standard (default). Every replica is named in sequential order, beginning from ordinal number zero. spec. 6. A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. In case, these pods go down then this replicaset can use it’s template to replace these pods. Also,instead of replicationcontrollers, you can use replica sets. Edit the controllers configuration by using kubectl edit rs ReplicaSet_name and change the replicas count up or down as you desire. We have now logged into the MySQL database. You may test it, after deleting the ReplicaSet and then typing the command kubectl get pods into the terminal. 13. $ kubectl get al. A ReplicaSet's purpose is to maintain a stable set of replica Pods running at any given time. In Kubernetes it is possible to delete rs in a following way: Find the name for "old" rs with kubectl get replicaset -n kube-system . yaml. matchLabels: This specifies the labels used for pod selection. yaml. The MongoDB shell welcome message appears. By default, Kubernetes keep 10 replica sets for each deployment, which means you can go back 9 versions prior. HPA is a form of autoscaling that increases or decreases the number of pods in a replication controller, deployment, replica set, or stateful set based on CPU utilization—the scaling is horizontal because it affects the number of instances rather than the resources allocated to a single container. Syntax: $ kubectl [command] [TYPE] [NAME] [flags] Command: This will include the operation mentioned below you want to perform regarding the specific resource. To expose the external deployment as a NodePort service, you can specify the type as NodePort in kubectl expose: shell. 80 383 more pod1. 9 the API version apps/v1 on the ReplicaSet kind is the current version and is enabled by default. Can you try kubectl get deploy --field-selector metadata. A pod doesn't "run" a replica set, and there is no such thing as a "primary set". namespace) (. Create ReplicaSet with 3 Replicas. $ kubectl create -f deploy. Then, create, scale, and update a deployment with the following commands: kubectl run deployment web --image=nginx kubectl scale deployment web --replicas=10 kubectl set image deployment web nginx=that-image-does-not-exist. List the available daemon sets: [root@controller ~]# kubectl get ds NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR. kubectl get replicaset. Running the kubectl get pods command shows the rollout of two new pods with the updated version 1. $ kubectl apply -f busy-job-completion. data. yml Verifying the replica set deployment and accessing the replica set. This page shows how to run a replicated stateful application using a StatefulSet. As with all other Kubernetes config, a DaemonSet needs apiVersion, kind, and metadata fields. Delete the ReplicaSet Let's clean up before we move on. The differences in this manifest are: Using kind: Deployment to state the resource type. Let’s see what is the best way to migrate one MongoDB replica set Pod from one node to another when local storage is used. NO LOGS created from kubectl get events immediately after deleting deployment using kubectl -n default delete deployment dummy-deployment. The issue happen because the Replica Set configuration points to the other nodes using your internal cluster IPs, so you will see. Unlike a. Login to the MySQL pod and Verify: kubectl exec -it mysql-0 -- mysql -u root -p. Prerequisites. Use the following command to delete the Kibana object: $ kubectl delete Kibana quickstart-kb. yml from 3 to 6. Sep 16, 2022 at 21:35. 4. This page contains a list of commonly used kubectl commands and flags. At this point, you should have three pods created in your cluster. 2. While we won’t be providing a tutorial for managing Deployments via kubectl, we will be using. extensions/frontend scaled master $ kubectl get pods NAME READY STATUS RESTARTS AGE frontend-4jb2x 1/1 Terminating 0 38s frontend-98xkj 0/1. yaml deployment "nginx" created $ kubectl get deploy NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE nginx 2 2 2 2 51s $ kubectl get -o json deploy nginx | jq '. $ kubectl apply -f deployment. It seems the actual problem is that deployments are somehow confused by too many old replica sets. kubectl apply -f aks-store-quickstart-hpa. # Create ReplicaSet kubectl apply -f 02-replicaset-definition. kubectl create -f my-replica. Identical Pods are known as Replicas. 27. Now copy your deployment file to a master node and apply it. It can be considered as a replacement of replication controller. apps/web scaled deepak. Then they are in your desired number of replicas. If you need to get events related to specific objects, this can be achieved by describing an object using the command kubectl describe object/object_name. It'll restart the pods one by one in a RollingUpdate way. The --cascade option set to "orphan" tells the command to only delete the replicaSet without deleting the pods. Background. name=nginx-deployment. For example, deploying the same. kubectl apply -f dp. The . spec. $ kubectl get rs NAME DESIRED CURRENT READY AGE nginx-deployment-1564180365 3 3 0 6s nginx-deployment-2035384211 0 0 0 36sTo create the ReplicaSet, you can use the kubectl apply command: kubectl apply -f my-app-replica-set. kubectl get daemonset <name-of-daemon-set> -n <namespace> -o yaml Share. This blog post will discuss how this feature can be used. 0. revisionHistoryLimit in the Deployment to the number of old replica sets you want to retain. In this article, we will look into how to connect Replicaset to a Pod in. kubectl get pods <pod-name> -o yaml kubectl get pods my-helloworld-rs-c8rrj -o yaml Step-03: Expose ReplicaSet as a Service ; Expose ReplicaSet with a service (Load Balancer Service) to access the application externally (from internet) Step 2: Check All the ReplicaSets in Kubernetes. yaml 392. kubectl apply-f my-manifest. yaml deployment "mywebservice-deployment" create $ kubectl get deployments NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE. $ kubectl config set-credentials cluster-admin --username = vipin -- password = uXFGweU9l35qcif kubectl config set − Sets an individual value in kubeconfig file. This will cause the deployment controller to create a ReplicaSet, with one replica (which means it will only start one pod). We run the following command in k8s. If you list the Pods, you will notice that five Pods are running: $ Kubectl get Pods NAME READY STATUS RESTARTS AGE my-replicaset-89dkw 1/1 Running 0 4m15s You can see that the number of Replica and the running instance of a Pod are the same as the number specified in the manifest file replicas field. To check if HPA worked you have to describe it. # Before change spec: replicas: 3 # After change spec: replicas: 6. If you run kubectl get pods <pod_name> -o yaml where <pod_name> is a pod created by ReplicaSet, you will see owner reference. Deployment creates it in the background and manage it. We can exec into any of the nodes in the replicaset and check the status. Scaling_and_replica gauravagnihotri$ kubectl get deployment NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE tomcat-deployment 1 1 1 1 3m13s. ReplicaSets, without a space) are another abstraction layer on top of Pods. Toye Idowu. Code: kubectl describe rs/frontend. Context. spec. ReplicaSets guarantee that there will be a specific number of identical Pods running at any given time. 1. From there it gets labels for replicaset selection. Frequently, when deploying a specific pod-template, the deployment fails to create a successful replicaset and no instance is created. Toye Idowu. 9, la version de l'API apps/v1 pour le type ReplicaSet est la version actuelle et activée par défaut. By using the command kubectl delete rs <rs name>, where rs name is the name of your ReplicaSet, you can destroy ReplicaSets. Create an IBM Cloud Kubernetes Service cluster. 2. kubectl get rs NAME DESIRED CURRENT READY AGE nginx-deployment-3646295028 0 0 0 2h nginx-deployment-3744336885 0 0 0 1h nginx-deployment-3842378742 3 3 3 1h. moury~ % kubectl scale statefulset web --replicas=3 statefulset. 13. insert({key1: ‘value1’}))” 3. kube. 40:80 Service An abstract way to expose an application. Edit a replica set: kubectl edit replicaset webapp. Changes to label selectors make existing pods fall out of ReplicaSet's scope, so if you change labels and label selector the pods are no longer "controlled" by ReplicaSet. elastic. Run kubectl get pods –show-labels to see which labels were generated for the pods within the ReplicaSet. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. yml. In the replica sets, we used the selector. Therefore, we have implemented a small handling charge of $1. mongodb-replica-set-key}" | base64 --decode Step 3: Restore the MongoDB deployment on the destination cluster You can now restore the persistent volumes and integrate them with a new MongoDB deployment on the destination cluster. Certificate Management with kubeadm; Configuring a cgroup driver; Reconfiguring a. ReplicaSets. This should create the node api deployment. Replica set, also termed as rs in short, is almost same as the replication controller is, only with a single difference. items[?(@. service "nginx" created. Set an alias for kubectl in Bash. Most kubectl commands that support Replication Controllers also support Replica Sets. In Kubernetes, if you will set replica value to 0, you will not have any running pod in this specific Deployment. The output will look similar to this, with the frontend ReplicaSet's info set in the metadata's. $ kubectl get ats NAME CREATED AT ats. And they both say. – lindluni. yaml Step 4: Set up Replication Host. Here, I’m scaling down the ReplicaSet used in the article’s example to manage two pods instead of four. A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. // demonstrate to change the number of Pod replicas. $ kubectl run my - nginx -- image = nginx. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. To do that, simply run the kubectl delete command with the DaemonSet. Cómo funciona un ReplicaSet Un ReplicaSet se define con campos, incluyendo un selector que indica. kubectl get pods kubectl delete pods vote-xxxx vote-yyyy Observe as the pods are automatically created again. 2. Comme avec tous les autres objets API Kubernetes, un ReplicaSet a besoin des champs apiVersion, kind et metadata . 1 <none> 443/TCP 9d NAME READY UP-TO-DATE AVAILABLE AGE deployment. Options: --all-containers=false: Get all containers's logs in the pod (s). You will note if you do kubectl get pods, that they are still broken. 69. You can insert a key into the primary instance of the MongoDB Replica Set by running the following: MASTER_POD_NAME must be replaced with the name of the master found in the previous step. From the name, it seems like Kibana CRD object: apiVersion: kibana. yaml --record=true. When the request comes to the Service via the NodePort, it gets routed to one of the Pods in the Replica Set. But the deployment controller will see that the current count of the replica set is 5 and since it knows that it is supposed to be 3, it will reset it bac A ReplicaSet is one of the Kubernetes controllers that makes sure we have a specified number of pod replicas running. 12. kubectl describe pod pod_name -n. extensions "my-first-replicaset" deletedreal 0m2. Display information about the ReplicaSet in the current namespace $ kubectl get replicaset. If you inspect how kubectl does it (by executing kubectl -n my-namespace describe deploy my-deployment --v=9) you will see that it dos the following: first gets deployment details with: /apis/extensions/v1beta1/namespaces/my-namespace/deployments/my-deployment. Lowering the replica count will cause Kubernetes to gracefully terminate some pods, freeing up cluster. kubectl delete rs {NAME_REPLICA_SET} kubernetes. Scale a resource specified in “ipsum. The following kubectl command sets the spec with progressDeadlineSeconds to make the controller report lack of progress of a rollout for a Deployment after 10 minutes: kubectl patch deployment/nginx-deployment -p ' {"spec": {"progressDeadlineSeconds":600}}'. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. The next part in the manifest is the selector field. Instructions to Log In or Reset your MyEd Student Account Student Log in . kubectl get replicaset. Let’s wait until its phase is ‘Running’. This output shows that the ReplicaSet frontend along with the number of replicas currently running. apps "myapp-replicas" created Next, we make sure it is created. kubectl expose pod rabbitmq-0 --port=15672 --target-port=15672 --type=NodePort. These correspond to the three nodes in your MongoDB replica set. The key to the replica set is the commands on runtime in the arg key field. Initially, it is necessary to add the desired set of labels to a subset of nodes. Try kubectl get deployment --namespace=kube-system to see if you have a deployment in the kube-system namespace. For example, you define how many replicas ( pods) of your app you want to run in the. If you try to scale the replica set, then it will (for a very short time) have a new count of 5. $ kubectl create -f <replicaSet_file_name>. StatefulSets are designed to run stateful applications in Kubernetes with dedicated persistent storage. When the traffic and load subsides, we can revert to the original configuration of two Pods. kubectl get. ReplicationController is often abbreviated to "rc" in discussion, and as a shortcut in kubectl commands. 1:27020 to your pod's 27017 port. io/mongo:4. With IPVS mode, you can change the traffic distribution algorithms to something else. This is because pods are a namespaced resource, and no namespace was provided in the command. mongodb-1 – Read-only replica. Imperative way: (this will then diverge from what you have in your yaml-file) kubectl scale deployment mage-di --replicas=2. kubectl get sts --all-namespaces to delete all the stateful sets in. kubectl get pod,svc -owide NAME READY STATUS. What to use ReplicaSets. 27. The command will show you the name of the ReplicaSet and the number of desired, current, and ready Pod replicas. kubectl. Use this procedure to create a new replica set in a member Kubernetes cluster in a multi-Kubernetes-cluster deployment. extensions/nginx scaled sekreta@cloudshell:~ (composite-rune-239911)$ kubectl get deploy NAME READY UP-TO-DATE AVAILABLE AGE nginx 0/0 0 0 6m48s. Delete a ReplicaSet Replica Sets . The pod is the thing that is replicated. 4. Verwaltung mit kubeadm. 26 introduced a new, alpha-level feature for StatefulSets that controls the ordinal numbering of Pod replicas. Delete replica set. Now that you have the ReplicaSet created you can verify the list of ReplicaSet using kubectl get rs command. kubectl create -f statefulset. metadata. answered Dec 26. If there is a very large number of Pods, though. Kubectl Scale use cases. The difference comes with the usage of selectors to replicate pods. But when I edit this deployment using the command kubectl edit deployment my-dep2, only changing the version of busybox image to 1. Tujuan dari ReplicaSet adalah untuk memelihara himpunan stabil dari replika Pod yang sedang berjalan pada satu waktu tertentu. To get the namespaces, you can run kubectl get namespaces or kubectl get ns (see the cheat sheet for the full list): $ kubectl get ns NAME STATUS AGE charts Active 8d default Active 9d kube-node-lease Active 9d kube-public Active 9d kube-system Active 9d. Delete the CRD object itself, to delete the deployment and other objects (if any) that were created with it. kubectl delete pod <name of managed instance>-0 -n <namespace of data controller> For example. kubectl get pods NAME READY STATUS RESTARTS AGE web-0 1/1 Running 0 1m web-1 1/1 Running 0 46s web-2 1/1 Running 0 18s. This is where you specify how the ReplicaSet. kubectl apply -f Service. For general information about working with config files, see running stateless applications and object management using kubectl. 概述. In the above screenshot, you can see the details of the ponds created after creating a replica set. You should see the new ReplicaSet running ( Figure A ). First find the pvs: kubectl get pv -n {namespace} Then delete the pv in order set status to Terminating. Replica sets provide redundancy and high availability and are the basis for all production deployments. This command will create a new replica set with updated pods and will gradually scale down the old replica set while scaling up. Kubectl autocomplete BASH source <(kubectl completion bash) # set up autocomplete in bash into the current shell, bash-completion package should be. Use kubectl directly. Run this command to view: kubectl get pods Output:We can run kubectl get rs to see that the Deployment updated the Pods by creating a new Replica Set and scaling it up to 3 replicas, as well as scaling down the old Replica Set to 0 replicas. This procedure allows you to set different settings for the replica set resource, such as overrides for statefulSet configuration. kubectl get replicasets -w. Install and Set Up kubectl on macOS; Install and Set Up kubectl on Windows; Administer a Cluster. Follow. metadata. Open your terminal, and run the kubectl create command below to create a new namespace ( ns ) called mongodb on your Kubernetes cluster. For any queries, feel free to contact me at yatharth. Modified 5 years, 3 months ago. yaml The above command will create a ReplicaSet with three replicas and manage the lifecycle of the pods. Example-1: Create replica set using match labels. -c, --container='': Print the logs of this container -f, --follow=false: Specify if. kubectl scale --replicas=3 statefulset/web. Damith June 10, 2020, 8:57am #10. kubectl scale replicaset nginxset --replicas=4. Delete a specified ReplicaSet TL;DR: You need to scale your deployment instead of the replica set directly. watch kubectl get all.