The section order for 2.2.1 and 2.2.2 looks vice versa. Since it seems that 2.2.2 is prerequisite for installing, it should be located before installing step(2.2.1).

Reported by: rhn-support-mkawakam

https://access.redhat.com/documentation/en-us/red_hat_jboss_core_services/2.4.37/html-single/apache_http_server_installation_guide/index#annotations:b4a41f78-2d20-4077-9e46-d4740e876296