TLS connections between etcd peers should not use self-signed certificates that are automatically generated

kubernetes

Set up the kubernetes integration.

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Description

Automatically generated self-signed certificates for TLS connections between peers should not be used. Etcd is a highly-available key value store used by Kubernetes deployments for persistent storage of REST API objects. These objects are sensitive in nature and should be accessible only by authenticated etcd peers in the etcd cluster. Hence, do not use self-signed certificates for authentication.

Remediation

Edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml on the master node and either remove the --peer-auto-tls parameter or set it to false.

--peer-auto-tls=false