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Appending the Certificate Authority (CA)

Append additional certificate authorities to the system’s trusted certificate store by patching the machine configuration with the following document: 
apiVersion: v1alpha1
kind: TrustedRootsConfig
name: custom-ca
certificates: |-
    -----BEGIN CERTIFICATE-----
    ...
    -----END CERTIFICATE-----
Multiple documents can be appended, and multiple CA certificates might be present in each configuration document. This configuration can be also applied in maintenance mode.