I created a deployment and defined a hpa rule for it: kubectl autoscale deployment my_deployment --min 6 --max 30 --cpu-percent 80 I want to run a . Some downtime of the service is expected even if the replicas>1. If so, deleting it should also delete the replica set and the pods that you created. Use kubectl version to check the version of kubectl. Create replica set. A simple case is to create one ReplicationController object to reliably run one instance of a Pod indefinitely. We will find the replicaset name to which this pod belongs to. 08. kubectl scale命令通过调整正在运行的容器的数量来立即缩放应用程序。. Run the above file using kubectl and create the backend replica set with the provided definition in the yaml file. Sep 16, 2022 at 21:35. That means it creates one or more set of the same Pods with the same container (s). that Kubernetes Operator creates, can later be migrated to a different to avoid storing secrets in Kubernetes. spec. Note: These instructions are for Kubernetes v1. Modified 5 years, 3 months ago. g. Instead, use the kubectl get rc command to list replication controllers (or alternatively, change your manifest file to create a ReplicaSet instead of a ReplicationController). yaml in /kubernetes_experiments and copy the following code to the. With kubectl you can use the kubectl logs command. kubectl apply -f <name> to recreate the StatefulSet. Lowering the replica count will cause. kubectl get events -o json You can also get events through a specific namespace by using the --namespace=${NAMESPACE} flag. It can be considered as a replacement of replication controller. spec section is similar to the ReplicaSet’s, defining the pod template for each replica. 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}}'. Let’s deploy the Replica Sets from the manifest file by running a kubectl command and then afterwards we’ll run a command to list our pods. Certificate. Comme avec tous les autres objets API Kubernetes, un ReplicaSet a besoin des champs apiVersion, kind et metadata . It demonstrates how to create, delete, scale, and update the Pods of StatefulSets. Scaling the replicaset can be done by using two methods. As such, it is often used to guarantee the availability of a specified number of identical Pods. When using a Deployment, the actual pods are created and managed by the Deployment’s ReplicaSets, not by the Deployment directly. Now delete a pod, while watching pods: kubectl delete pod rs-quarkus-demo-mlnng. Replica sets provide redundancy and high availability and are the basis for all production deployments. # Apply latest changes to ReplicaSet kubectl replace -f replicaset-demo. You’ll get that service/service23 created. This output shows that the ReplicaSet frontend along with the number of replicas currently running. After deploying the replica set or replication controller, if you need to edit the file, you can use the command kubectl edit to edit. g. First of all, When a pod crashes, k8s doesn't necessarily change the name of the pod, Because as you said, it's restarted, not recreated. 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. Enter the pod using kubectl exec: kubectl exec -it mongodb-replica-0 -n default -- mongo. To obtain them, follow the instructions below: MongoDB® nodes domain: you can reach MongoDB® nodes on any of the K8s nodes external IPs. This would delete the DaemonSet with all the underlying pods it has created. 81 9. Manually by using the command. Add a comment. But when I edit this deployment using the command kubectl edit deployment my-dep2, only changing the version of busybox image to 1. 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 . Thanks this one worked. What to use ReplicaSets. Stateful SetsThis is a reference where you can get most kubectl codes and their definitions easily acts as a reference. You will note if you do kubectl get pods, that they are still broken. For ReplicaSets, the kind is always just ReplicaSet. 96. I have enabled external access with SVC type LoadBalancer. If you run kubectl get pods <pod_name> -o yaml where <pod_name> is a pod created by ReplicaSet, you will see owner reference. A ReplicaSet can also be a. Lowering the replica count will cause Kubernetes to gracefully terminate some pods, freeing up cluster. When we cleaned out all the old ReplicaSets, our. This procedure allows you to set different settings for the replica set resource, such as overrides for statefulSet configuration. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. metadata. Get the replica sets list. ) Without RS, we will have to create multiple manifests for the number of pods we need. kubectl describe deployment deployment-name and. (Allows more disruptions at once). Display information about the ReplicaSet in the current namespace $ kubectl get replicaset. As such, it is often used to guarantee the availability of a specified. yaml kubectl delete rs new-replica-set kunectl create -f rs. # Before change spec: replicas: 3 # After change spec: replicas: 6. Kubectl logs command cheat sheet. This is something you have to bear in mind. The updateStrategy field accepts one of the following value. You can get the name of your replication controller using kubectl get rc. Cara kerja ReplicaSet Sebuah ReplicaSet didefinisikan dengan beberapa field. But when I edit this deployment using the command kubectl edit deployment my-dep2, only changing the version of busybox image to 1. This makes it possible to set the first pod as primary, for example, and the others as replica pods. kubectl get deployments NAME READY UP-TO-DATE AVAILABLE AGE ngnix-deployment 0/3 3 0 12m kubectl. But it doesn’t display resources like config maps, secrets,. To run kubectl commands, you would follow this convention: kubectl [command] [TYPE] [NAME] [flags] To use the kubectl logs command, you would pass either a pod name or a type/name. Wait until the Pods have been terminated, using kubectl get pods to check their status, then rescale the Deployment back to your intended replica count. If there is a very large number of Pods, though. Then they are in your desired number of replicas. The output is similar to this: $ kubectl get deployment -o wide # check the deployment $ kubectl get rs -o wide # When you create a deployment resource, the Deployment Controller automatically creates a new ReplicaSet : You can think how a pod is managed via the Deployment Controller as follow: Run the kubectl create command to create your pod. When you increase the replica count, Kubernetes will start new pods to scale up your service. A ReplicaSet's purpose is to maintain a stable set of replica Pods running at any given time. When pods run as part of a StatefulSet, Kubernetes keeps state data in the persistent storage volumes of the StatefulSet, even if the pods shut down. mourya ~ % kubectl get statefulset NAME READY AGE web 0/0 33s deepak. batch/busy-job-completion created $ kubectl get po NAME READY STATUS RESTARTS AGE busy-job-2wg9f 0/1 Completed 0 19m busy-job-completion-bfh49 0/1. 当控制平面为 ReplicaSet 创建新的 Pod 时，ReplicaSet 的 . Nov 19, 2019 at 15:14. ReplicationController is often abbreviated to "rc" in discussion, and as a shortcut in kubectl commands. 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. By default, Kubernetes keep 10 replica sets for each deployment, which means you can go back 9 versions prior. You can use kubectl get pods again to see the unneeded pods being removed. kubectl scale 是帮助我们管理 Kubernetes 部署的众多工具之一。. // demonstrate to change the number of Pod replicas. yaml After some time, we modify d. 4 minute read. You can verify the status of your pod by running the get pods command. If every restart would create a new pod, there would not have been. As with all other Kubernetes API objects, a ReplicaSet needs the apiVersion, kind, and metadata fields. One exception is the rolling-update command. Get Pods. replicas: It specifies the desired number of replicas (pods) to maintain. This post assumes you have a basic understanding of pods, minikube, and kubectl. 1. Once you deploy the replication controller, first the pods get deployed using the pod template. In the above screenshot, you can see the details of the ponds created after creating a replica set. The replica set are also known as next generation replication. 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. Certificate. Every replica is named in sequential order, beginning from ordinal number zero. /deployment. ReplicaSets guarantee that there will be a specific number of identical Pods running at any given time. yaml The above command will create a ReplicaSet with three replicas and manage the lifecycle of the pods. This tutorial provides an introduction to managing applications with StatefulSets. Add a comment. If you run kubectl get pods <pod_name> -o yaml where <pod_name> is a pod created by ReplicaSet, you will see owner reference. Create a deployment via kubectl run, as shown below. 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}}'. kubectl edit pod <Name of the Pod> Step 3: Apply the pod by using the following command. $ kubectl get ats NAME CREATED AT ats. 4. kubectl create --help |awk '/Available Commands:/,/^$/' Available Commands: clusterrole Create a cluster role clusterrolebinding Create a cluster role binding for a particular cluster role configmap Create a config map. $ kubectl edit replicaset new-replica-set . imagkubectl 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) $ kubectl version . $ kubectl get pod -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES sample-pod3-rzmhb 2/2 Running 0 38s 192. The only difference between a Replica Set and a Replication Controller right now is the selector support. kubectl get rc/nginx-rc kubectl get rc/nginx-rc -o wide kubectl get rc/nginx-rc -o yaml kubectl get rc/nginx-rc -o json. co/v1 kind: Kibana. yaml kubectl delete pod my-replica-set-2 Once this hung pod is deleted, the other pods restart with your new configuration as part of rolling upgrade of the Statefulset. To ensure that, pods must be managed as stateful sets. elastic. To make changes in your current deployment you can use kubectl rollout pause deployment/YOUR_DEPLOYMENT. kubectl logs -l=app= {app-name} -c= {container-name} -n= {namespace} As you can see the options with the kubectl logs -h command. 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. analogy: Head chef instructs the team of line cooks to prepare a certain dish. It makes sure that a stable set of replica pods is running at any given time, which guarantees an available specified number of identical pods. $ kubectl get pod NAME READY STATUS RESTARTS AGE myapp-replicas-67rkp 1/1 Running 0 33s myapp-replicas-6kfd8 1/1 Running 0 33s myapp-replicas-s96sg. A set of pods that all share the same labels. Define a command to run using --command. This command will create a new replica set with updated pods and will gradually scale down the old replica set while scaling up. Kubernetes will delete any child resources (in this case, the replica sets and pods): kubectl delete deploy sise-deploy. Now let’s inspect the ownerReferences of the ReplicaSet. We will explain: What RS is. Set an alias for kubectl in Bash. If you have used the kubectl rollout history command you might have noticed that it displays only the last 10. then you need set the replicas to zero using this command. Deleting a DaemonSet is a simple task. Hence we have successfully deployed created a deployment for Nginx. apps/kuard created $ kubectl get deployment,replicaset,pod --show-labels NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE LABELS deployment. master $ kubectl scale rs frontend --replicas 2 replicaset. kubectl get pods -n <namespace of data controller> Delete the managed instance pod. yaml. kubectl get pods. While ReplicaSets make it easier to work with Pods, they. To check the version, use the kubectl version command. +1 to what blixt said. 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. 0. Run the command kubectl edit replicaset new-replica-set, modify the replicas and then save the file. 28. kubectl describe replicaset replicaset-name. Syntax: $ kubectl [command] [TYPE] [NAME] [flags] Command: This will include the operation mentioned below you want to perform regarding the specific resource. Here, I’m scaling down the ReplicaSet used in the article’s example to manage two pods instead of four. List all pods in the current namespace, with additional details . spec. yml service/nginx unchanged The StatefulSet. Replica sets ensure that the desired (minimum) number of replicas of a stateless pod for a given application are running. For general information about working with config files, see running stateless applications and object management using kubectl. Install and Set Up kubectl on macOS; Install and Set Up kubectl on Windows; Administer a Cluster. kubectl create -f my-replica. kubectl create -f replicaset. Ensure that you add s for each Kubernetes pod that hosts a member of your replica set to the certificate. </li> </ul> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data. kubectl get daemonset <name-of-daemon-set> -n <namespace> -o yaml Share. You can view the ReplicaSet by running the following command: $ kubectl get replicaset NAME DESIRED CURRENT READY AGE hello 5 5 5 30s. As with all other Kubernetes API objects, a ReplicaSet needs the apiVersion, kind, and metadata fields. analogy: Display information of line cooks currently working in the kitchen. kubectl delete pod <name of managed instance>-0 -n <namespace of data controller> For example. $ kubectl get all NAME READY STATUS RESTARTS AGE pod/nginx-854998f596-6jtth 1/1 Running 0 52s NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubernetes ClusterIP 10. $ kubectl get hpa -w. yaml. However if you change labels and. Options: --all-containers=false: Get all containers's logs in the pod (s). Scales down all deployments in a whole namespace: kubectl get deploy -n <namespace> -o name | xargs -I % kubectl scale % --replicas=0 -n <namespace>. Deployments are an alternative to ReplicaSets, as they are used to manage ReplicaSets . yaml. Code: kubectl describe rs/frontend. Here are some examples of field selector queries: metadata. Improve this answer. yaml Check the status of the autoscaler using the kubectl get hpa command. For example, deploying the same. yaml in which a deployment, whose strategy is RollingUpdate, is defined. moury~ % kubectl scale statefulset web --replicas=3 statefulset. As soon as the load generator script is stopped, there’s a cool down period, and after 1 minute or so the replica set is lowered to the. Autoscaling is also an option with ReplicaSets using kubectl autoscale rs web –max=5. So, chances are you want to be listing the deployments instead of the services in this case. yaml. name of the ReplicaSet is part of the basis for naming those Pods. We can also verify the running service: kubectl get svc. First, check the existing replica set using the following command. yml kubectl get pods Code language: CSS (css) As you can see from my screenshot, we now have two pods running as we were expecting. It did not recreate the pods again. name }') This should be more stable because it processes the replica count directly instead of trying to parse the output of kubectl which might. Sorted by: 2. It will show. Dans Kubernetes 1. Find the object that "old" rs is controlled by: kubectl describe <rs-name>. Writing a ReplicaSet manifest. kubectl scale replicaset nginxset --replicas=4. kubectl config set-credentials − Sets a user entry in kubeconfig. analogy: Head chef instructs the team of line cooks to prepare a certain dish. Then, the kubectl get command returns a list of resources belonging to each resource type in the specified namespace. Even though the new replica set is created. yml file called ‘frontend. 1. For any queries, feel free to contact me at yatharth. yaml” to 3:deepak. Output: NAME DESIRED CURRENT READY AGE nodeapp-deployment-56865dcdf6 5 5 5 52s. (Remember, a controller in Kubernetes is what takes care of tasks to make sure the desired state of the cluster matches the observed state. Deploy a sample application and connect the kubectl command-line tool (CLI) to the Kubernetes cluster. print (os. kubectl get pods kubectl delete pods vote-xxxx vote-yyyy Observe as the pods are automatically created again. Get details of a replica set: kubectl describe replicaset webapp. Replica Sets, as the name implies, define how many replicas of each pod will be running. However, when minReplicas is set higher than 1, then the desired replica count is calculated to be vale of minReplicas. Kubectl. Lets now delete the pod created independent of replica set. In this blog post we are going to discuss the ReplicaSet concept in Kubernetes. /cluster/kubectl. If you scale down a ReplicaSet or Deployment, arbitrary pods get removed, which could include the primary node in this MongoDB system. Replication Controller and Replica Set do almost the same thing. kubectl get pods --all-namespaces. Apr 8, 2022 at 21:57. The Horizontal Pod Autoscaler can help applications scale out to meet increased demand, or scale in when. kubectl. kubectl describe replicaset {NAME. 8. The output of kubectl get all --selector app=my-dep2 post the edit is: 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. Get certified by completing the course. January 9, 2019. Kubectl apply -f <name of the pod> Scaling a ReplicaSet . 1-57c75779f-8sm9r 2/2 Running 0 16h. Use kubectl get to list all Deployments, Replica Sets and Pods in your default namespace:kubectl get secret mongodb -o jsonpath= "{. Whenever you deploy new version of deployment, the replica set preserves the previous configuration of the deployment. The Kubernetes Horizontal Pod Autoscaler automatically scales the number of Pods in a deployment, replication controller, or replica set based on that resource's CPU utilization. Manually by using the command. Delete a pod. This should create the node api deployment. 1. $ kubectl get all NAME READY STATUS RESTARTS AGE pod/nginx-854998f596-6jtth 1/1 Running 0 52s NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubernetes ClusterIP 10. kubectl -n NAMESPACE scale deploy DEPLOYMENT_NAME --replicas=0 And make sure that the replicas is zero by this command. You can use. Replica Set is the next generation of Replication Controller. How can I get all the logs from a specific container (s) that are running in a replica set. Use this procedure to create a new replica set in a member Kubernetes cluster in a multi-Kubernetes-cluster deployment. # Run kubectl to connect inside the container kubectl run curl --image = dareyregistry/curl -i--tty # Type curl and your container's ip curl -v 10. replicaset should spin up new pods with new image. About; Products. Delete the CRD object itself, to delete the deployment and other objects (if any) that were created with it. Install and Set Up kubectl on macOS; Install and Set Up kubectl on Windows; Administer a Cluster. Use kubectl to scale StatefulSets. Replica set, also termed as rs in short, is almost same as the replication controller is, only with a single difference. If you try to scale the replica set, then it will (for a very short time) have a new count of 5. A ReplicaSet. In the above screenshot, you can see the details of the ponds created after creating a replica set. kubectl scale deployment. 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. kubectl get pods NAME READY. It'll restart the pods one by one in a RollingUpdate way. The selector is used to identifying the Pods it can acquire. 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. When check the resource in kubernetes. For ReplicaSets, the kind is always a ReplicaSet. Normally, the old (previous). Create a stateful set. yaml. This subresource is well known for resources like deployments and replica sets in Kubernetes, which obviously can be scaled up and down. Share. $ kubectl apply -f replicaset. Replica Sets. The command will show you the name of the ReplicaSet and the number of desired, current, and ready Pod replicas. Port Forwarding will make a local port on your machine redirect (forward) traffic to some pod. By manually modifying the replica set that was created for you, you are fighting with the system controller. The same can be achieved with kubectl create -f ( -f is a flag for specifying file. 6. Learn more about Teamskubectl get pods -l 'env in (development, testing)' kubectl get pods -l 'env notin (development, testing). spec. To do that, simply run the kubectl delete command with the DaemonSet. kubectl scale rs new-replica-set --replicas 0 kubectl scale rs new-replica-set -. For example, if the variable is set to seattle, kubectl get pods would return pods in the seattle namespace. kubectl get services List all pods in all namespaces kubectl get pods --all-namespaces. Note: if you run the. After it's paused you can make necessary changes to your configuration and then resume it by using kubectl rollout resume. $ 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,. In simple words, an instance of a Pod is a Replica. 3. Now get the Pods list using the following command. 5. kubectl get endpoints Code language: JavaScript (javascript) Once the service and endpoint are deployed, we’ll deploy a quick container into our. Old Replica Sets is a term used in documentation of kubernetes and like any other term introduced in kubernetes it is something that user has to get. The kubectl run command can take a number of arguments to configure additional parameters of the deployments. items[?(@. 2. Use the following command to delete the Kibana object: $ kubectl delete Kibana quickstart-kb. apps. On your second terminal, type this to apply the K8s manifest we just worked on: kubectl apply -f mongo. Deleting a ReplicaSet. Kubernetes client (kubectl) sent a request to the API server requesting the creation of a ReplicaSet defined in the replicaset-app. This should create the replica sets for MongoDb. kubectl get statefulset Output - all three members are up: NAME READY AGE mongo 3/3 103s Initiating and Viewing the MongoDB replica set. # kubectl get event --field-selector involvedObject. A service is a network abstraction over a pod. Old Replica set are removed. This is managed by a ReplicaSet. 2. Get the replica sets list. What is a Mongo Replica Set. print (k8s. Now watch it launch:Use kubectl to scale StatefulSets. k8s. To create a replica said execute the following command. $ kubectl apply -f deployment. $ kubectl apply -f my-pod. $ kubectl get replicasets View ReplicaSets on Cluster. Open your terminal, and run the kubectl create command below to create a new namespace ( ns ) called mongodb on your Kubernetes cluster. We will now list the pods and verify. When we fire delete to remove the resource, it removes the target objects forcefully: $ time kubectl delete rs my-first-replicaset && kubectl get podreplicaset. thank you3- If yes and you update the image name for that deployment. kubectl describe deployment awesome-app-deployment. kubectl get daemonsets -A kubectl get rs -A | grep -v '0 0 0' Confirm that daemonsets and replica sets show all members in Ready state. Use --record while creating the deployment so that it will start recroding the deployment into the ReplicaSet. I have deployed a mongodb replicaset (v6. Delete a specified ReplicaSet TL;DR: You need to scale your deployment instead of the replica set directly. kubectl scale rs/web --replicas= 2. * Does replica set take any action after deleting the pod created outside of its spec ? Why? Scalabilitykubectl describe replica set replicaset_name -n dep_namespace. Declarative way, edit this line in your Yaml file: replicas: 2. Install and Set Up kubectl on macOS; Install and Set Up kubectl on Windows; Administer a Cluster. You can use the kind: deployment can check kubectl get rc still replica set will be there. Although ReplicaSet's main purpose is to maintain a stable set of replica Pods, it's not a kubernetes object that is commonly created,. spec. Replica Set is a next generation of replication controller. $ kubectl set image deployment/newsconsumer-deployment. selectorbut whose template does not match . To deploy a replica set using an. The driver will attempt to connect to each host in the seed list in turn, and once it gets a connection will run isMaster. And they both say. yaml and execute the kubectl apply command to deploy the replication controller. kubectl get replicasets -w. kubectl apply -f creates Replica Sets using a config file: kubectl apply -f replicaset-definition-file. Initially, it is necessary to add the desired set of labels to a subset of nodes. Toye Idowu. matchLabels: This specifies the labels used for pod selection. Update the replicas field in replicaset-demo. kubectl apply -f creates Replica Sets using a config file: kubectl apply -f replicaset-definition-file. Frequently, when deploying a specific pod-template, the deployment fails to create a successful replicaset and no instance is created. kubectl get pods. Toye Idowu. Labels are assigned in the Descriptor of a replica set. That is the role of labels and selectors. 2) using this chart: bitnami/mongodb 13. The Deployment controller will automatically create a new pod. 在本文中我们将了解如何使用此工具以及最佳使用实践。. Output. spec section. 79. replicas==0)]. Create; get; describe; delete; Type – Here you have to mention the specific resource provided by Kubernetes that you want to create like pods,. Ask Question Asked 5 years, 3 months ago. # Replace "hello-4111706356" with the job name in your system pods = $(kubectl get pods --selector = job-name = hello-4111706356 --output = jsonpath ={. Here, I’m scaling down the ReplicaSet used in the article’s example to manage two pods instead of four. I would like to get all ReplicaSets that have any problems using kubectl only without external monitoring systems. In the replica sets, we used the selector. 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. From the name, it seems like Kibana CRD object: apiVersion: kibana. you can create a new ReplicationController with the proper label selector and manage them again. it will reset it back to 3. $ kubectl get hpa. ***> wrote: You don't need to run any script in order to cleanup old replica sets - just 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. [root@localhost ~]# kubectl get rs NAME DESIRED CURRENT READY AGE web-app 2 2 2 70s To verify the replicas created by the ReplicaSet YAML file you can use kubectl get. 26 introduced a new, alpha-level feature for StatefulSets that controls the ordinal numbering of Pod replicas. Behind the scenes, kubectl.