This README provides a step-by-step guide to create and manage a Replicaset in Kubernetes. It covers the creation of a Replicaset using the declarative approach, scaling the Replicaset imperatively, deleting a pod from the Replicaset, and finally, deleting the entire Replicaset.

The instructions mentioned in this readme are based on a practical demonstration given in the following YouTube video: Link to Video.

To create a Replicaset named "myfirstrs" with the Nginx image and 1 replica using the declarative way, follow these steps:

• Create a YAML file, e.g., myfirstrs.yaml.
• Open the file and add the following YAML content:

apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: myfirstrs
spec:
  replicas: 1
  selector:
    matchLabels:
      app: myfirstrs
  template:
    metadata:
      labels:
        app: myfirstrs
    spec:
      containers:
      - name: nginx
        image: nginx

• Save the file and apply the configuration using the following command:

kubectl apply -f myfirstrs.yaml

To scale the Replicaset named "myfirstrs" to 5 pods using the imperative way, execute the following command:

kubectl scale replicaset myfirstrs --replicas=5

To delete one of the pods from the Replicaset, you can choose any of the pods in the Replicaset and delete it manually. Use the following command to list the pods:

kubectl get pods

• Once you have identified the pod you want to delete, use the following command:

kubectl delete pod <pod-name>

• Replace with the name of the pod you wish to delete.

To delete the entire Replicaset named "myfirstrs," execute the following command:

kubectl delete replicaset myfirstrs

This command will delete the Replicaset and all associated pods.