A CentOS 8 installation ISO provides two repos: BaseOS, and AppStream.
AppStream *and *BaseOS are new on CentOS 8 ISOs—the ISOs for CentOS 7 and 6 only provided Updates.
The simp::yum::repo::local_os_* profiles currently only manages the Updates repo; SIMP should manage AppStream *and *BaseOS for EL8 agents.
This might not be the best idea; unpack_dvd currently symlinks all .rpms from an ISO into a single combined *Updates/* folder, regardless of their original folder. However, with the advent of modular repos ( ), this presents the possibility of encountering multiple repos with *modules.yaml.gz files.