Details
Setup TLS connection on the API server.
Rationale:
API server communication contains sensitive parameters that should remain encrypted in transit. Configure the API server to serve only HTTPS traffic.
Solution
Follow the Kubernetes documentation and set up the TLS connection on the apiserver. Then, edit the `/etc/kubernetes/apiserver` file on the master node and set the `KUBE_API_ARGS` parameter to include `’–tls-cert-file=’` and `’–tls-private-key-file=’`: `KUBE_API_ARGS=’–tls-cert-file= –tls-private-key-file= ‘`
Based on your system, restart the `kube-apiserver` service. For example: `systemctl restart kube-apiserver.service`
Impact:
TLS and client certificate authentication must be configured for your Kubernetes cluster deployment.
Supportive Information
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Identification and Authentication.This control applies to the following type of system Unix.