initializeCluster

Claims an CloudHSM cluster by submitting the cluster certificate issued by your issuing certificate authority (CA) and the CA's root certificate. Before you can claim a cluster, you must sign the cluster's certificate signing request (CSR) with your issuing CA. To get the cluster's CSR, use DescribeClusters.

Cross-account use: No. You cannot perform this operation on an CloudHSM cluster in a different Amazon Web Services account.