The following EAP 8 documentation:

Using single sign-on with JBoss EAP has a broken link which gives 404.

Chapter 2.4.3, Procedure 1, the bad link is: Adding Feature Packs to existing JBoss EAP Servers using the jboss-eap-installation-manager

The correct link is the following: Chapter 4. Adding Feature Packs to existing JBoss EAP Servers using the jboss-eap-installation-manager.

Regards,

Fernando