Create Replicaset in Kubernetes Cluster

 Question : The Nautilus DevOps team is going to deploy some applications on kubernetes cluster as they are planning to migrate some of their applications there. Recently one of the team members has been assigned a task to write a template as per details mentioned below:

Create a ReplicaSet using httpd image with latest tag only and remember to mention tag i.e httpd:latest and name it as httpd-replicaset.

Labels app should be httpd_app, labels type should be front-end. The container should be named as httpd-container; also make sure replicas counts are 4.

Note: The kubectl utility on jump_host has been configured to work with the kubernetes cluster.

Please Note :-  Perform the below commands based on your question server,  user name & other details that might differ. So please read task carefully before executing.

 All the Best 👍

Solution:  

1. At first  kubectl  utility configure and working from jump server, run below commands   

thor@jump_host /$  kubectl get deploy No resources found in default namespace. thor@jump_host /$ kubectl get services NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   3m28s thor@jump_host /$

2.  Create  httpd.yaml  file with all the parameters given in task

    ( Refer Below Video for more clarity )

thor@jump_host /$ vi /tmp/httpd.yaml thor@jump_host /$ cat /tmp/httpd.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   template:     metadata:       labels:         app: httpd_app         type: front-end     spec:       containers:         - name: httpd-container           image: httpd:latest thor@jump_host /$

3.  Run below command to create pod

thor@jump_host /$ kubectl create -f /tmp/httpd.yaml replicaset.apps/httpd-replicaset created thor@jump_host /$

4.  Wait for  pods to get running status

thor@jump_host /$ kubectl get pods NAME                     READY   STATUS    RESTARTS   AGE httpd-replicaset-2qp9s   1/1     Running   0          32s httpd-replicaset-4hgxw   1/1     Running   0          32s httpd-replicaset-9ghzh   1/1     Running   0          32s httpd-replicaset-cmrcq   1/1     Running   0          32s thor@jump_host /$

 

5.  Click on Finish & Confirm to complete the task successful

Happy Learning!!!!

Apart from this if you need more clarity,  I have made a  tutorial video on this, please go through and share your comments. Like and share the knowledge