InformationConfigure TLS encryption for the etcd service.
etcd is a highly-available key value store used by Kubernetes deployments for persistent storage of all of its REST API objects. These objects are sensitive in nature and should be encrypted in transit.
SolutionFollow the etcd service documentation and configure TLS encryption.
Then, edit the etcd pod specification file '/etc/kubernetes/manifests/etcd.yaml' on the master node and set the below parameters.
Client connections only over TLS would be served.