I took the easy way out and disabled selinux. So far so good with the NIS server, however the client nodes still don't work. See below
[root@toulouse ~]# rpcinfo -p localhost
program vers proto port service
100000 4 tcp 111 portmapper
100000 3 tcp 111 portmapper
100000 2 tcp 111 portmapper
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
[root@toulouse ~]# systemctl enable ypbind
[root@toulouse ~]# systemctl start ypbind
Job for ypbind.service failed. See 'systemctl status ypbind.service' and 'journalctl -xn' for details.
[root@toulouse ~]# systemctl -l status ypbind.service
ypbind.service - NIS/YP (Network Information Service) Clients to NIS Domain Binder
Loaded: loaded (/usr/lib/systemd/system/ypbind.service; enabled)
Active: failed (Result: exit-code) since Sat 2015-08-08 12:25:54 CDT; 1min 23s ago
Process: 4531 ExecStartPost=/usr/libexec/ypbind-post-waitbind (code=exited, status=1/FAILURE)
Process: 4527 ExecStart=/usr/sbin/ypbind -n $OTHER_YPBIND_OPTS (code=exited, status=0/SUCCESS)
Process: 4524 ExecStartPre=/usr/sbin/setsebool allow_ypbind=1 (code=exited, status=1/FAILURE)
Process: 4519 ExecStartPre=/usr/libexec/ypbind-pre-setdomain (code=exited, status=0/SUCCESS)
Main PID: 4527 (code=exited, status=0/SUCCESS)
Status: "Processing requests..."
Aug 08 12:25:09 toulouse setsebool[4524]: setsebool: SELinux is disabled.
Aug 08 12:25:54 toulouse systemd[1]: ypbind.service: control process exited, code=exited status=1
Aug 08 12:25:54 toulouse systemd[1]: Failed to start NIS/YP (Network Information Service) Clients to NIS Domain Binder.
Aug 08 12:25:54 toulouse systemd[1]: Unit ypbind.service entered failed state.
[root@toulouse ~]# journalctl -xn
-- Logs begin at Sat 2015-08-08 10:58:14 CDT, end at Sat 2015-08-08 12:25:54 CDT. --
Aug 08 12:25:09 toulouse systemd[1]: Starting NIS/YP (Network Information Service) Clients to NIS Domain Binder...
-- Subject: Unit ypbind.service has begun with start-up
-- Defined-By: systemd
--
-- Unit ypbind.service has begun starting up.
Aug 08 12:25:09 toulouse setsebool[4524]: setsebool: SELinux is disabled.
Aug 08 12:25:09 toulouse ypbind[4532]: Binding NIS service
Aug 08 12:25:54 toulouse ypbind[4615]: Binding took 45 seconds
Aug 08 12:25:54 toulouse ypbind[4617]: NIS server for domain natural_philosophy is not responding.
Aug 08 12:25:54 toulouse ypbind[4618]: Killing ypbind with PID 4527.
Aug 08 12:25:54 toulouse ypbind[4619]: Try increase NISTIMEOUT in /etc/sysconfig/ypbind
Aug 08 12:25:54 toulouse systemd[1]: ypbind.service: control process exited, code=exited status=1
Aug 08 12:25:54 toulouse systemd[1]: Failed to start NIS/YP (Network Information Service) Clients to NIS Domain Binder.
-- Subject: Unit ypbind.service has failed
-- Defined-By: systemd
--
-- Unit ypbind.service has failed.
--
-- The result is failed.
Aug 08 12:25:54 toulouse systemd[1]: Unit ypbind.service entered failed state.