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.
Configure TLS encryption for the etcd service.
Run the following command on the etcd server node
ps -ef | grep etcd
Verify that the
--cert-file and the
--key-file arguments are set as appropriate.
Follow 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.
By default, TLS encryption is not set.
Updated 12 days ago