Configure YAML file using Config Map

k8ConfigMap4YAML.sh

#!/bin/bash
#How k8 configures application

#Create config map
kubectl create configmap my-map –from-literal=school=LinuxAcademy

#Check status of config map
kubectl get configmaps

#Detailed description of config map
kubectl describe configmaps my-map

#Generate yaml code for config map
kubectl get configmap my-map -o yaml

echo “apiVersion: v1
kind: Pod
metadata:
  name: config-test-pod
  namespace: default
spec:
  containers:
  - name: test-container
    image: busybox
    command: [ "/bin/sh", "-c", "env" ]
    env:
      - name: WHAT_SCHOOL
        valueFrom:
          configMapKeyRef:
            name: my-map
            key: school
  restartPolicy: Never” >> pod-config.yaml

#Create pod from yaml file
kubectl create -f pod-config.yaml

#Check status of pods
kubectl get pods

#Display logs for config test pod
kubectl logs config-test-pod