Chapter 4 – Application scheduling and lifecycle management

You have two virtual machines: master-0 and worker-0, please complete the following mock scenarios.

Scenario 1

SSH to the worker-0 node, and provision a new pod called ngnix with a single container nginx.

Use the following command:

kubectl run nginx --image=nginx:alpine

Scenario 2

SSH to worker-0, and then scale the nginx to 5 copies.

Use the following command:

kubectl scale deployment nginx --replicas=5

Scenario 3

SSH to worker-0, set a configMap with a username and password, then attach a new pod with a busybox.

Create a yaml definition called packt-cm.yaml to define ConfigMap as the following:

  apiVersion: v1 

  kind: ConfigMap 

  metadata: 

    name: packt-configmap 

  data: 

    myKey: packtUsername 

    myFav: packtPassword

Use the following command...