Switch off SELinux.
Make sure that you have access to installation repositories.
- Appendix D. Setting Up Identity Management
- from Red Hat RHCSA/RHCE 7 Cert Guide: Red Hat Enterprise Linux 7 (EX200 and EX300)
- Publisher: Pearson IT Certification
- Released: September 2015
How to do these things? Keep in mind that, at the point that these are needed, we're only in Chapter 6, where SELinux and repositories haven't even been discussed. Also, unless the repositories are supposed to be local (where?), the IP addresses provided might not work on our networks.