k8selfHealing

#!/bin/bash
#Self Healing

#Nginx deployment yaml created in previous script
kubectl create -f nginx-deployment.yaml

#Check status of pods; including replicas
kubectl get pods

#Delete indicated pod within nginx deployment
kubectl delete pod nginx-deployment-6fdbb596db-2gjdp

#Check status of pods; including replicas (new pod replaces deleted pod)
kubectl get pods

#Display node where the indicated pod is present 
kubectl describe pod nginx-deployment-6fdbb596db-hr5xb | grep Node

#The node indicated in the above line was turned off

#Check status of nginx deployment
kubectl get deployments

#Check status of pods
kubectl get pods

#Check status of pod 
kubectl describe pod nginx-deployment-6fdbb596db-hr5xb

#After 5 mins the status of the pod with the turned off node is changed to unknown
#A new pod is created to maintain 3 replicas
#Once the node is turned back on the unknown status pod is removed and replaced by the new pod