cert-manager can be used to manage SSL certificates, such as creating a new SSL certificate, renewing an SSL certificate, revoking an SSL certificate, on so on.

If you are not familiar with the oc command, refer to OpenShift - Getting Started with the oc command.

The oc get certificates command can be used to list the cert-manager certificates that have been created in your OpenShift cluster. In this example, there is a certificate created by cert-manager in the my-project namespace named my-certificate.

]$ oc get certificates --all-namespaces
NAMESPACE           NAME                          READY   SECRET                  AGE
my-project          my-certificate                True    my-secret               5m13s