10.4. Cloning OCSP Subsystems

Configure the master OCSP, and back up the keys.
In the CS.cfg file for the master OCSP, set the OCSP.Responder.store.defStore.refreshInSec parameter to any non-zero number other than 21600; 21600 is the setting for a clone.
```
# vim /etc/instance_name/CS.cfg

OCSP.Responder.store.defStore.refreshInSec=15000
```
Create the clone subsystem instance using the pkispawn utility.
For examples of the configuration file required by pkispawn when cloning OCSP subsystems, see the pkispawn(8) man page.
Restart the Directory Server instance used by the clone.
```
# systemctl dirsrv@instance_name.service
```
Note
Restarting the Directory Server reloads the updated schema, which is required for proper performance.

Restart the clone instance.

# systemctl restart pki-tomcatd@instance_name.service

After configuring the clone, test to make sure that the master-clone relationship is functioning:

Set up OCSP publishing in the master CA so that the CRL is published to the master OCSP.
Once the CRL is successfully published, check both the master and cloned OCSP's List Certificate Authorities link in the agent pages. The list should be identical.
Use the OCSPClient tool to submit OCSP requests to the master and the cloned Online Certificate Status Manager. The tool should receive identical OCSP responses from both managers.