[INFO] 4 Worker Node Security Configuration [INFO] 4.1 Worker Node Configuration Files [FAIL] 4.1.1 Ensure that the kubelet service file permissions are set to 644 or more restrictive (Automated) [PASS] 4.1.2 Ensure that the kubelet service file ownership is set to root:root (Automated) [PASS] 4.1.3 If proxy kubeconfig file exists ensure permissions are set to 644 or more restrictive (Manual) [PASS] 4.1.4 If proxy kubeconfig file exists ensure ownership is set to root:root (Manual) [PASS] 4.1.5 Ensure that the --kubeconfig kubelet.conf file permissions are set to 644 or more restrictive (Automated) [PASS] 4.1.6 Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Manual) [PASS] 4.1.7 Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Manual) [PASS] 4.1.8 Ensure that the client certificate authorities file ownership is set to root:root (Manual) [PASS] 4.1.9 Ensure that the kubelet --config configuration file has permissions set to 644 or more restrictive (Automated) [PASS] 4.1.10 Ensure that the kubelet --config configuration file ownership is set to root:root (Automated) [INFO] 4.2 Kubelet [PASS] 4.2.1 Ensure that the anonymous-auth argument is set to false (Automated) [PASS] 4.2.2 Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated) [PASS] 4.2.3 Ensure that the --client-ca-file argument is set as appropriate (Automated) [PASS] 4.2.4 Ensure that the --read-only-port argument is set to 0 (Manual) [PASS] 4.2.5 Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual) [FAIL] 4.2.6 Ensure that the --protect-kernel-defaults argument is set to true (Automated) [PASS] 4.2.7 Ensure that the --make-iptables-util-chains argument is set to true (Automated) [PASS] 4.2.8 Ensure that the --hostname-override argument is not set (Manual) [WARN] 4.2.9 Ensure that the --event-qps argument is set to 0 or a level which ensures appropriate event capture (Manual) [WARN] 4.2.10 Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual) [PASS] 4.2.11 Ensure that the --rotate-certificates argument is not set to false (Manual) [PASS] 4.2.12 Verify that the RotateKubeletServerCertificate argument is set to true (Manual) [PASS] 4.2.13 Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual) == Remediations node == 4.1.1 Run the below command (based on the file location on your system) on the each worker node. For example, chmod 644 /etc/systemd/system/kubelet.service.d/10-kubeadm.conf 4.2.6 If using a Kubelet config file, edit the file to set protectKernelDefaults: true. 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 parameter in KUBELET_SYSTEM_PODS_ARGS variable. --protect-kernel-defaults=true Based on your system, restart the kubelet service. For example: systemctl daemon-reload systemctl restart kubelet.service 4.2.9 If using a Kubelet config file, edit the file to set eventRecordQPS: to an appropriate level. 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 parameter in KUBELET_SYSTEM_PODS_ARGS variable. Based on your system, restart the kubelet service. For example: systemctl daemon-reload systemctl restart kubelet.service 4.2.10 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= --tls-private-key-file= Based on your system, restart the kubelet service. For example: systemctl daemon-reload systemctl restart kubelet.service == Summary node == 19 checks PASS 2 checks FAIL 2 checks WARN 0 checks INFO == Summary total == 19 checks PASS 2 checks FAIL 2 checks WARN 0 checks INFO