18.2. Switching from a self-signed to an externally-signed CA in IdM
You can switch from a self-signed CA to an externally-signed CA in IdM. Once you switch to an externally-signed CA in IdM, your IdM CA server becomes a subCA of the external CA. Also, the renewal of the CA certificate is not managed automatically and a system administrator must submit a certificate signing request (CSR) to the external authority.
To switch to an externally-signed CA, a CSR must be signed by the external CA. Follow the steps in Renewing the IdM CA renewal server certificate using an external CA to switch to a self-signed CA in IdM.