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lacework-global-741

Set the --tls-cert-file and --tls-private-key-file arguments as appropriate (Automated)​

Description​

Setup Transport Layer Security (TLS) connection on the Kubelets.

Remediation​

If using a Kubelet config file:

Edit the file to set tlsCertFile to the location of the certificate file to use to identify this Kubelet, and tlsPrivateKeyFile to the location of the corresponding private key file.

If using command line arguments:

Edit the kubelet service file /etc/systemd/system/kubelet.service.d/10-kubeadm.conf on each worker node and set the below parameters in KUBELET_CERTIFICATE_ARGS variable:

--tls-cert-file=<path/to/tls-certificate-file> --tls-private-key-file=<path/to/tls-key-file>

Reload the configuration to update it with the changes made using:

systemctl daemon-reload

Then restart the kubelet service using:

systemctl restart kubelet.service

References​

https://github.com/kelseyhightower/docker-kubernetes-tls-guide
https://jvns.ca/blog/2017/08/05/how-kubernetes-certificates-work/
https://kubernetes.io/docs/reference/config-api/kubelet-config.v1beta1/
https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/
https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/

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