SELinux is running in permissive mode
yum update is yielding:
Loaded plugins: amazon-id, rhui-lb, search-disabled-repos Webmin
| 1.0 kB 00:00:00 Could not retrieve mirrorlist https://None/pulp/mirror/rhui-client-config/rhel/server/7/x86_64/os error was 14: curl#6 - "Could not resolve host: None; Name or service not known"
This is a fresh Amazon Red Hat 7 box, with webmin and a LAMP stack.