Summary

In this chapter, you have learned the key points you should bear in mind when preparing for Kubernetes DR. You have learned about stateful components in the whole Kubernetes cluster and the fact that they require a backup-and-restore strategy using etcd clusters and persistent volumes. Next, you learned how to manually perform a snapshot for your Kubernetes etcd cluster and upload it to an Azure blob container. Then, we used this snapshot to restore a Kubernetes cluster to a previous state and verified that the restore was successful. On top of this, you utilized all your new knowledge in order to create a Docker image for a snapshot worker that created a snapshot of etcd (for AKS Engine) and uploaded it to the Azure blob container. We used this Docker image to create a Kubernetes CronJob for performing backups, which is done every six hours. The last topic that we looked...