The example Secret CR provided in the Deploying Red Hat OpenStack Services on OpenShift document [1] ** has a syntax error in the field OctaviaHeartbeatKey due to a ':' missing. The correct syntax is as follows:

OctaviaHeartbeatKey: $(tr -dc 'A-Za-z0-9' < /dev/urandom | head -c 32 | base64) 

 [1][ https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html-single/deploying_red_hat_openstack_services_on_openshift/index#ref_example-Secret-service-pods_preparing|https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html-single/deploying_red_hat_openstack_services_on_openshift/index#ref_example-Secret-service-pods_preparing]