MAAS supports supported releases of Ubuntu, CentOS/RHEL 7 and 8, VMware ESXi 6.7, and Windows Server 2012-2016.
Oracle Linux isn’t officially supported right now but its supposed to be binary compatible with RHEL which is supported. I would start by feeding the RHEL 8 Packer template the Oracle Linux 8 ISO to create the image. You can then upload it as
custom/oracle-linux-8. MAAS/Curtin do look at
/etc/os-release during install to determine the deployment OS. Because RHEL/CentOS aren’t in the name matching may fail. If that is the case please file a bug and upload the curtin logs.
maas $PROFILE node-script-result download $SYSTEM_ID current-installation filters=/tmp/curtin-logs.tar > curtin-logs.tar