7.Deploy ReplicaSet in Kubernetes Cluster

[MyrinNew]

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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