As with most processes and services, pods are liable to failure, errors, evictions, and deletion. The volume name will be listed under volumes and type PersistentVolumeClaim; delete the pod mongo-rs-1. Delete old PVCs. Re: How to remove old replica sets from Viya deployment. Summary of what we learned: ReplicationControllers always keep the desired number of pod replicas running. In this manner, a ReplicaSet can own a non-homogenous set of Pods. Even though the new replica set is created. A ReplicaSet is one of the Kubernetes controllers that makes sure we have a specified number of pod replicas running. This is where you specify how the ReplicaSet. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. Generally speaking, this is not limited to two “old” and “new” replica sets. When doing a kubectl rollout restart of a deployment the old replica set seems to hang around. Make sure that the user running the mongod instances is the owner of the file and can access the keyfile. the old replica sets are not removed they are retained for the versioning. The rollout restart command is used to restart an entire deployment or replica set, while the delete command is used to delete individual pods. Manages the deployment and scaling of a set of Pods, and provides guarantees about the ordering and uniqueness of these Pods. I have installed the cluster using this command: sudo snap install microk8s --classic --channel=1. Here the replicas field is set to 3, but you can set it to whatever fits your application. template are scaled down. This is where replicasets come into play. Checkout oc adm options and oc adm prune --help for options. When deleting a pod manually kubectl delete wait for the pod to be deleted and one can include a kubectl wait --for. Note: I also tried spec. Each pod in a StatefulSet backed by a Headless Service will have a stable DNS name. Scale out database cluster horizontally with one node: 2. 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. I commented on @janetkuo's PR #41163 (comment) that I think the excessive deletion requests from the deployment controller may have caused conflicts with garbage collector's PUT request. )3 Answers. condition in a script to wait for the pod to be deleted. Deployments are great! However, they have the downside of creating a lot of obsolete replica sets. They act as a successor to Replication Controllers and provide more advanced features for. When the primary approaches the k8s statefulset memory limit, it is either OOMKilled or becomes unresponsive. eRase is a private and anonymous online reporting tool for. The rollout restart command is used to restart an entire deployment or replica set, while the delete command is used to delete individual pods. Kubernetes will launch a new pod matching the new replica set. Let's have a look at an example: 1/16. Using kubectl. When I apply the yaml (kubecl apply), it creates the below resources: 1 Deployment 1 ReplicaSet 2 Pods. Jun 14, 2016. Refer to Kubernetes Supported versions and Helm Version Support Policy to find the supported versions. I don't think I can get to the logs of the controller manager, as those are on the. vi d. As long as the old and new . Deployments are a newer and higher level concept than Replication Controllers. 5, do the following: kubectl delete pods pod_name --grace-period=0 --force. name }') For further details, see also this thread,. –If you look at the AGE column, you will notice four Pods created 14 minutes ago and one created more recently. this practice test have two more question. 9, la version de l'API apps/v1 pour le type ReplicaSet est la version actuelle et activée par défaut. You can specify how many Pods should run concurrently by setting . 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. Deployments are great! However, they have the downside of creating a lot of obsolete replica sets. Below is the command to generate a keyfile: openssl rand -base64 756 > <path-to-keyfile> chmod 400 <path-to-keyfile>. 3. @nikhiljindal ubernetes-lite runs the latest code. You can use the kind: deployment can check kubectl get rc still replica set will be there. This is not a breaking change. Share. Returns basic help text for replica set functions. Get hands-on experience with pods, ReplicaSets, and deployments in this beginner's guide for 2023. The below command shows how I scale the number of pods from 3 to 4. Pods are the most basic unit that is deployable in Kubernetes, and replica is simply a duplication of the pod. 9 the API version apps/v1 on the ReplicaSet kind is the current version and is enabled. . Kubernetes ReplicaSet. +1 to what blixt said. 💡Check out Kubernetes Deployments: The Ultimate Guide to understand more about how Deployments and ReplicaSets are used in a production setting. If you want to delete only the ReplicaSet resource, and keep the pods without an owner, you need to manually delete them. (Remember, a controller in Kubernetes is what takes care of tasks to make sure the desired state of the cluster matches the observed state. Say we have d. Now, let’s see what new we have in replica set. In this example: A Deployment named nginx-deployment is created, indicated by the . You can prune resources associated with deployments that are no longer required by the system, due to age and status. Closed. The absolute number is calculated from percentage by rounding up. After investigating it we realized that the reason was that the remaining 3 pods belonging to the old replica set were so overwhelmed with traffic - which was supposed to be handled by 11 instances - that the Kubernetes readiness probes started failing and therefore we had a big problem as we faced due to this very issue a downtime. nano [filename]. kubectl scale --replicas=0 deploy name_of_deployment. Your Kubernetes orchestrations and. Thus, PMM would not work for Kubernetes Platforms such as OpenShift or others that. When you create a deployment, Kubernetes creates a replica set that manages the specified number of replicas of your application. create_namespaced_controller_revision . spec. If you're using any version of kubectl <= 1. Deleting a ReplicaSet. kubectl scale replicaset my-app-replica-set --replicas=5 To update the pod template, you can use the kubectl edit command to modify the ReplicaSet manifest file and apply the changes: kubectl edit. To Delete the replicaset. 8). yaml. So I tried. Edit the controllers configuration by using kubectl edit rs ReplicaSet_name and change the replicas count up or down as you desire. The ReplicaSet will create or delete Pods until the desired number are operational. selector are the same,. Figure-3: State Of Nginx Stateful Set After Node Failure. deployment , pods, replica-set for particular deployment excluding specific one in kubernetes. Also many times in rolling restart in latest Kubernetes versions, there is an old copy of the old replica set working. Dans Kubernetes 1. Edit the controllers configuration by using kubectl edit rs ReplicaSet_name and change the replicas count up or down as you desire. The replication controller only supports equality-based selector whereas the replica set supports set-based selector i. Replica Set. A ReplicaSet's purpose is to maintain a stable set of replica Pods running at any given time. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. Once the new version is fully deployed, the old replica set is deleted, and the deployment is complete. Unlike a. Here are the steps: Get the name of the pod that you want to restart. Notifications Fork 885; Star 1. all refers to all resource types such as pods, deployments, services, etc. are). In Kubernetes 1. 4. Kubernetes ReplicaSets are used to ensure a specific number of replica pods are running at all times. I even connect it to my mongo-express client. How to auto remove the old replica set (Desired 0) after deploy? The text was updated successfully, but these errors were encountered: 2. Pause the cluster on K8s. When we fire delete to remove the resource, it removes the target objects forcefully: $ time kubectl delete rs my-first-replicaset && kubectl get podreplicaset. This predictably updates the set of pods regardless of unexpected failures. deployment-name-950161082 0 0 0 7d. ", and it does rolling update with creating a new replica-set) old replica-set that now has 0. The deployment pod remains for an indefinite amount of time. But with replicas all of then queries the database records. 14: kubectl edit pvc <name> for each PVC in the StatefulSet, to increase its capacity. kubernetes. When we deleted one Pod, the number of actual replicas decreased from five to four. Changes affected deployment and service names, the result was: new deployment with new name created. 1 - Pod is set to the “Terminating” State and removed from the endpoints list of all Services At this point, the pod stops getting new traffic. Delete the resources like below: kubectl delete deployments <deployment> kubectl delete services <services> kubectl delete pods <pods> kubectl delete daemonset <daemonset>. 6. Defining Kubernetes Replica Set/Deployment and services in Jenkins. You can scale your pods further using kubectl scale – replicas=4 -f <replication_file>. ReplicaSets can be used independently. I am aware about the hierarchical order of k8s resources. ReplicaSets instantly produces a new pod if one of the existing pods is deleted or crashes. I deleted the resources in the below order and it worked for me. According to the Pod-Safety document, for clustered software in the Kubernetes, the system provides a. For example something like this: --- apiVersion: builtin kind: PatchTransformer metadata: name. 5. Now , you will need to either delete the replica sets or delete the existing pods: kubectl delete rs new-replica-set kubectl delete pod pod_1 pod_2 pod_2 pod_4. Delete a ReplicaSet. ReplicaSetCondition describes the state of a replica set at a certain point. In Kubernetes 1. This can be done by stopping the MongoDB processes on the nodes, and then deleting the Kubernetes resources associated with the old replica set. In the replica sets, we used the selector. elastic. This task shows you how to delete a StatefulSet. We can use the cascade=false flag in the kubectl delete command to only delete the DaemonSet without deleting the pods. 11. 1. A significantly more correct answer is provided by @ns15. The rolling update cycles previous Pod out and bring newer Pod in incrementally. Configure the data source. This procedure allows you to set different settings for the replica set resource, such as overrides for statefulSet configuration. Issue. Replication controller is kinda imperative, but replica sets try to be as declarative as possible. The selector is used to identifying the Pods it can acquire. 4, Minikube v0. During a rolling update, Kubernetes creates new Pods with the updated configuration and waits for them to reach the "Running" state before terminating the old Pods. Use a SOCKS5 Proxy to Access the Kubernetes API; Set up Konnectivity service; TLS. Use either kubectl or the Kubernetes API to delete the Deployment, depending on the Kubernetes version your cluster runs. . A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. 2. You should be able to get the name of the replica-set from that object and then, later on, use it in order to delete it. Those Replication Controllers (RC) act as supervisors for pods containing long-running processes such as an app server. The reason we have noticed it - it tries to perform a database update. 1 <none> 443 /TCP 9 d NAME READY UP-TO-DATE AVAILABLE AGE deployment . I am deploying new deployment after changes in kubernetes service. If this issue is safe to close now please do so with /close. We first create a deployment: kubectl apply -f d. Here you can see how the Deployment itself runs a ReplicaSet that then runs 3 pods. En la versión 1. 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. 0. it generated from the system. Deleting a StatefulSet You can delete a StatefulSet in the same way you delete other resources in Kubernetes: use the kubectl delete command, and specify the StatefulSet either by file or by name. In Kubernetes 1. mongo-old") Note that by deleting the proxy pods before running. scale the ReplicaSet up to 5 PODs. Improve this answer. Deployment creates it in the background and manage it. This approach ensures that all instances of our application use the latest image. On a cluster where Kubernetes is deployed, increasing or decreasing the number of similar pods (or replicas) is known as scaling. There is no recreating / moving to the other node, it's just removed (for bare pods). Scaling a number of replicas in Kubernetes. They also monitor and ensure the required number of pods are running, replacing pods that die. This can be done by adding the new replica set as a secondary node to the current replica set, and then promoting it to the primary node. Posted 4 weeks ago (206 views) | In reply to gwootton. However, this is how the Deployment object actually does rolling upgrade. Scale your replica count, initiate a rollout, or manually delete Pods from a ReplicaSet to terminate old containers and start fresh new instances. The updateStrategy field accepts one of the following value. When i type: kubectl delete pods <pod-name> --grace-period=0 --force. A ReplicaSet is a key component of a Kubernetes application. Then you deployed a new revision, with 2 replicas. To delete the exiting pod. . I have enabled external access with SVC type LoadBalancer. If you change the replica count, there will be a period of time where more or fewer Pods are running than your manifest indicates. Using the controller. Even though the new replica set is created. , identical copies) of a pod are running at all times. gzThis can not be 0 if MaxUnavailable is 0. io How can I remove replicasets from kubernetes? I use kubernetes-client java libs, the request there looks like this: /apis/extensions/v1beta1/namespaces/ {namespace}/replicasets/ {name} but I do not know the name replicasets, I know only label selector. You can find this by describing the pod kubectl describe po mongo-rs-1. That’s the one that we’re trying to move to; that’s the one that Kubernetes will progressively scale up. Use the kubectl delete pod command to delete the pod. Install and Set Up kubectl on Windows; Installieren und konfigurieren von kubectl A ReplicaSet's purpose is to maintain a stable set of replica Pods running at any given time. A ReplicaSet (RS) is a Kubernetes object used to maintain a stable set of replicated pods running within a cluster at any given time. 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. replication: replSetName: "rs0" . # kubectl scale deployment the-deployment-name --replicas=2 kubectl get pods kubectl delete pod the-deployment-name-12345-f7h9j Once the pod starts getting deleted, the Kubernetes Service should route all of the traffic to the surviving pod(s) (those with Running status). Pods in a replica set are controlled by the Replica Set Definition of the replica set, e. A replica set is a core Kubernetes object called ReplicaSet. spec. 1 Solution. Replica Set. When I created a replicaset and a replication controller the replicaset didn't delete the replication controller's pods and I'm trying to understand why. Share. Cleans up empty directory (not used anymore) in etcd as a CronJob (etcd-empty-dir. In this Kubernetes Tutorial we did a comparison between Replication Controller and Replica Set. With replication, you are making a copy of a complete pizza pie on every server. In the keys directory create a key file mongo-set. The following diagram shows an example of scaling:This page contains a list of commonly used kubectl commands and flags. 3. A Deployment is a Kubernetes object that manages a set of identical pods, ensuring that a specified number of replicas of the pod are running at any given time. DaemonSets are frequently used. A Kubernetes deployment defines the desired state of the application, including the number of replicas, the container images, and the configuration of each replica. The configuration of each Deployment revision is stored in its Replica Sets; therefore, once an old Replica Set is deleted, you lose the ability to rollback to that revision of Deployment. This is where you specify how the ReplicaSet should. 5 or before. Specify the priority of the replica set member during elections. We need k8s to automatically start a pod if the pod prematurely dies or when a node failure happens. When using the. TL;DR: You need to scale your deployment instead of the replica set directly. if this issue still reproduces, please supply the deployment yaml, and the exact commands you are issuing by order, and i'll try to. 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. The metadata part of this file contains the following keys: name (my-cluster-name by default) sets the name of your Percona Server for MongoDB Cluster; it should include only URL-compatible characters, not exceed 22 characters, start with an. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. Specify whether the replica set member votes in elections. You could pass a unique annotation in the deployment, that annotation gets inherited by the children replica sets, then GET all replica sets in the namespace, filter out all but. 6. The following imperative command helped me remove all the pods in a ReplicaSet without deleting the ReplicaSet. DaemonSets are commonly used to deploy special programs that run in the background, performing tasks such as monitoring and logging. We can delete any Replication Controller and all its pod by using the command kubectl delete. For ReplicaSets, the kind is always a ReplicaSet. 163 1 1 14. spec. deployment-name. As long as the old and new . 492suser. As with other Kubernetes objects, such as DaemonSets, you can delete ReplicaSets using the kubectl delete command. Over time you can end up with alot of replication controllers, and thus you need to clean them out. Hi, I have recently noticed that I have lots of duplicated deployments because kubectl delete deployment won't delete the replica set and pod associated with it. Returns the replica set configuration document. It creates the new replica set first and starts adding instances to it, while it drains the old one. Now I would like to restore this data to my remote mongodb, which is a replicaset with two replicas running on a kubernetes cluster. Al igual que con el esto de los objeto de la API de Kubernetes, un ReplicaSet necesita los campos apiVersion, kind, y metadata. Eventually, the new Replica Set will be scaled to . ReplicaSet, error) GetAllReplicaSetsInChunks is the same as GetAllReplicaSets, but accepts a chunk size argument. 21. 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. Normal Kubernetes Service routing (via kube-proxy) is used to split traffic between the ReplicaSets. @kargakis I'm 95% sure the deployment had revisionHistoryLimit set from the first version on (I checked the Git history, and it's there for the first commit, but I can't be sure a version without the field was pushed to Kubernetes before the file was committed). My K8S version is : # kubectl --version Kubernetes v1. apps "webapp" deleted You can delete a ReplicaSet without affecting any of its Pods using kubectl delete with the — cascade. If I want to delete pod-0 but keep pod-1 active, I am not able to do that. items[?(@. ReplicaSet then fulfills its purpose by creating and deleting Pods as needed to reach the desired number. Unfortunately the Kubernetes ReplicaSet doesn't allow you to do what you ask; this will always try to bring the replicas of your Pod to the desired state (with a timing that increases incrementally from time to time). Once the original is deleted, you can create a new ReplicaSet to replace it. kubectl scale replicaset nginxset --replicas=4. There are 5 directories on disk each with their own config settings. I have provided a sample template file for your convenience. Therefor after apply that deployment. 2To simulate Pod crash, let’s delete the pod. kubectl delete pod <podname> ReplicaSets. Those changes are then replicated to the other replica sets using intrasite AD DS replication over the peered network. Pour ReplicaSets, l'attribut kind est toujours ReplicaSet. However it will not delete old replicasets. . yml). 3. To 0. kubectl delete $ (kubectl get all | grep replicaset. $ kubectl get all NAME READY STATUS RESTARTS AGE pod /nginx- 854998 f 596 - 6 jtth 1 / 1 Running 0 52 s NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service /kubernetes ClusterIP 10. This will set the number of replica to 0 and hence it will not restart the pods again. Create pods. Saved searches Use saved searches to filter your results more quicklyLooking any kubernetes command which can help me to delete all the related resources of the deployment excluding specific one. . 2. To get all the resources. selector. 96. The need for Deployments arose out of Kubernetes' historical. When we fire delete to remove the resource, it. deployment-name-950161082 0 0 0 7d. ovk closed this as completed on Nov 5, 2019. 1. So, this looks enough for a. Context: I gave the replicaset matchLabels section the same labels as in the replication controller's labels section. Alex Robinson. name field. Kubernetes ReplicaSets have replaced the older Kubernetes ReplicationControllers. Another option would be to list all replica-sets, and add a label selector to this call. Kubectl apply for a deployment with revHistoryLimit 0 does not delete the old replica set. replicas==0)]. Replica Sets. 25. Once Kubernetes has decided to terminate your pod, a series of events takes place. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. A Replicaset is a K8s object, a set of Pod templates that describe a set of Pod replicas. I have my DNS records pointing to each external SVC IP. Delete the resources like below: kubectl delete deployments <deployment> kubectl delete services <services> kubectl delete pods <pods> kubectl delete daemonset <daemonset>. A Kubernetes pod is a cluster deployment unit that typically contains one or more containers. A ReplicaSet's purpose is to maintain a stable set of replica Pods running at any given time. Once the admission controller is back online. mycompany-mongodb-headless:27017/dbDeleting a DaemonSet is a simple task. To make changes in your current deployment you can use kubectl rollout pause deployment/YOUR_DEPLOYMENT. Para los ReplicaSets, el tipo es siempre ReplicaSet. Mount storage volumes to a separate VM. kubectl delete configmap/mymap configmap "mymap" deleted. It can be considered as a replacement of replication controller. selector are the same,. It is up to the user to delete old jobs after noting their status. Kubernetes replicas are clones that facilitate self-healing for pods. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. Follow the steps below to deploy a Kubernetes job. Replicaset rather than the replication controller is used by other objects like deployment. template are scaled down. Old Replica set are removed. Kubernetes supports rolling updates, which provide a mechanism for updating our application deployment gradually. can you reproduce this issue? i mean, delete whatever replicasets you have remaining, and then verify you don't have any pod running. exit the editor. In this guide, you’ll learn how Kubernetes events work, what generates them, and where they’re stored. service. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. apps | grep "0 0 0" | cut -d' ' -f 1) This only works because of the way kubectl get all displays resources. Escribir un manifiesto de ReplicaSet. Finally, 3. Ask the Expert: Introduction to Making VMware Perform with SAS 14-Nov-2023. This is a higher-level abstraction than the good old RCs because it covers. Share. As I described, the old ReplicaSet is not deleted as expected, neither do I see a rolling update. replSetName: db-replication)This means that rather than copying data holistically, sharding copies pieces of the data (or “shards”) across multiple replica sets. Use a SOCKS5 Proxy to Access the Kubernetes API; Set up Konnectivity service; TLS. They allow features such as scaling and rollback in Kubernetes. I changed a template files of there deployed release and upgraded it. yaml in which a deployment, whose strategy is RollingUpdate, is defined. In Member Configuration, modify the settings for the replica set member that you want to edit. Now we want to move these services into a kubernetes cluster, and have 5 replicas running each with their own settings but thats where I get stuck. Shut down the mongod instance for the member you wish to remove. kubectl delete rc hello-rc --cascade=false. PMM should be platform-agnostic, but it requires escalated privileges inside a container. kubectl delete pvc data-p-0 kubectl delete pv <pv-name> --grace-period=0 --force. But I am facing strange issue. Once new pods are ready, old ReplicaSet can be scaled down further, followed by scaling up the new ReplicaSet, ensuring that the total number of Pods available at all times during the. If you want to delete a Pod forcibly using kubectl version >= 1. The following is an example ReplicaSet definition: apiVersion: apps/v1 kind:. selector. Before you begin This task assumes you have an application running on your cluster represented by a StatefulSet. Delete old STS. In short Kubernetes replaced two old containers with two new containers five times so that it updated all ten instances. When you delete an object, you can control whether Kubernetes deletes the object's dependents automatically, in a process called cascading deletion. A possible to manually remove old replicasets in a Kubernetes cluster is by running this command: kubectl delete replicaset $(kubectl get replicaset -o jsonpath='{ . So i need to used version in . 9 de Kubernetes, la versión apps/v1 de la API en un tipo ReplicaSet es la versión actual y está habilitada. When we upgrade to a new image version in a Deployment, a new ReplicaSet is created by the Deployment and the. k8s - Significance of ReplicaSet matchLabel selector. Before you begin This task assumes you have an application running on your cluster represented by a StatefulSet. After it's paused you can make necessary changes to your configuration and then resume it by using kubectl rollout resume. 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. kubectl -n <namespace> delete rs $(kubectl -n <namespace> get rs | awk '{if ($2 + $3 + $4 == 0) print $1}' | grep -v 'NAME') # example output. 23 introduced a new, alpha-level policy for StatefulSets that controls the lifetime of PersistentVolumeClaims (PVCs) generated from the StatefulSet spec template for cases when they should be deleted automatically when the StatefulSet is deleted or pods in the StatefulSet are scaled down. The easiest way to scale an existing ReplicaSets on a Kubernetes cluster is to use the Kubectl command-line and quickly scale up or down the number of pods. /close. 8 to deploy our software in a cloud provider. Update the ReplicaSet. It is a nuisance, because the new "old" pod can start things that we don't expect to be started before the. For HA we want to have replicas. Usually, you define a Deployment and let that Deployment manage ReplicaSets automatically. spec. The update strategy is configured using the updateStrategy field. Kubernetes deployments manage stateless services running on your cluster (as opposed to for example StatefulSets which manage stateful services). Ask the Expert. (The service types like, CluserIp, NodePort, Ingress are not so much relevant to this question. If you are content with the new hostname and have configured your system to access it, then just delete the proxy pods and remove the old members from the replica set: rs. However, terminating a pod doesn't necessarily mean it is been killed immediately. 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. When we are trying to redeploy the same deployment which is already running, Deployment does not do the rolling update on the replicasets which means old and new replica sets are running. What you expected to happen: Replicaset should be cleared up once the deployment rollout is complete. selector are the same,. Mark the issue as fresh with /remove-lifecycle rotten. replicas and all old Replica Sets will be scaled to 0. spec. The Deployment creates a ReplicaSet that creates three replicated Pods, indicated by the . There are two types of cascading deletion , as. If the Deployment is scaled to zero, we show only the latest replica set.