$ oc get ns
TLS certificates for registry or HTTPS endpoints must be added to a ConfigMap in order to import data from these sources. This ConfigMap must be present in the namespace of the destination DataVolume.
Create the ConfigMap by referencing the relative file path for the TLS certificate.
Ensure you are in the correct namespace. The ConfigMap can only be referenced by DataVolumes if it is in the same namespace.
$ oc get ns
Create the ConfigMap:
$ oc create configmap <configmap-name> --from-file=</path/to/file/ca.pem>