Performing an etcd backup

Since we are using KinD for our Kubernetes cluster, we can create a backup of the etcd database, but we will not be able to restore it.

Our etcd server is running in a pod on the cluster called etcd-cluster01-control-plane, located in the kube-system namespace. The running container includes the etcdctl utility, and we can execute a backup using kubectl commands.

Backing up the required certificates

Most Kubernetes installations store certificates in /etc/kuberetes/pki. In this respect, KinD is no different, so we can back up our certificates using the docker cp command. Let's see how to do this in two simple steps:

1. First, we will create a directory to store the certificates and the etcd database. Change your directory to the chapter13 folder where you cloned the book repository. Under the chapter13 folder, create a directory named backup and make it your current path:

   mkdir backup cd ./backup

2. To back up the certificates located...