Lab Information

The Nautilus DevOps team is gearing up to deploy applications on a Kubernetes cluster for migration purposes. A team member has been tasked with creating a ReplicaSet outlined below:

Create a ReplicaSet using httpd image with latest tag (ensure to specify as httpd:latest) and name it httpd-replicaset.

Apply labels: app as httpd_app, type as front-end.

Name the container httpd-container. Ensure the replica count is 4.

Note: The kubectl utility on jump_host is set up to interact with the Kubernetes cluster.

Lab Solutions

Step 1: Create the ReplicaSet YAML Configuration

Create a file named httpd-replicaset.yaml:

apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: httpd-replicaset
  labels:
    app: httpd_app
    type: front-end
spec:
  replicas: 4
  selector:
    matchLabels:
      app: httpd_app
      type: front-end
  template:
    metadata:
      labels:
        app: httpd_app
        type: front-end
    spec:
      containers:
      - name: httpd-container
        image: httpd:latest
        ports:
        - containerPort: 80

Step 2: Apply the ReplicaSet

Apply the ReplicaSet configuration

kubectl apply -f httpd-replicaset.yaml

Step 3: Verification

Check if ReplicaSet was created:

kubectl get replicaset httpd-replicaset

Check the pods created by the ReplicaSet:

kubectl get pods

Get detailed information about the ReplicaSet:

kubectl describe replicaset httpd-replicaset

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