1.3.4 Ensure that the --service-account-private-key-file argument is set as appropriate

Information

Explicitly set a service account private key file for service accounts on the controller manager.

Rationale:

To ensure that keys for service account tokens can be rotated as needed, a separate public/private key pair should be used for signing service account tokens. The private key should be specified to the controller manager with '--service-account-private-key-file' as appropriate.

Solution

Edit the Controller Manager pod specification file '/etc/kubernetes/manifests/kube-controller-manager.yaml' on the master node and set the '--service-account-private-key-file' parameter to the private key file for service accounts.

--service-account-private-key-file=

Impact:

You would need to securely maintain the key file and rotate the keys based on your organization's key rotation policy.

See Also

https://workbench.cisecurity.org/files/2125

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-5(2), CSCv6|14

Plugin: Unix

Control ID: c83b6e6144b6e74d2c090dc6fceb7d5e398ad3b7f62a2f93216e01357e081435