RPM Fusion's mirrorlist server which are returning a list of (probably, hopefully) up to date mirrors (e.g., http://mirrors.rpmfusion.org/mirrorlist?repo=free-fedora-rawhide&arch=x86_64) still have been running on CentOS5 and the old MirrorManager code base. It was running on two systems (DNS load balancing) and was not the most stable setup. Connecting from a country which has been recently added to the GeoIP database let to 100% CPU usage of the httpd process. Which let to a DOS after a few requests. I added a cron entry to restart the httpd server every hour, which seemed to help a bit, but it was a rather clumsy workaround.
It was clear that the two systems need to be updated to something newer and as the new MirrorManager2 code base can luckily handle the data format from the old MirrorManager code base it was possible to update the RPM Fusion mirrorlist servers without updating the MirrorManager back-end (yet).
From now on there are four CentOS7 systems answering the requests for mirrors.rpmfusion.org. As the new RPM Fusion infrastructure is also ansible based I added the ansible files from Fedora to the RPM Fusion infrastructure repository. I had to remove some parts but most ansible content could be reused.
When yum or dnf are now connecting to http://mirrors.rpmfusion.org/mirrorlist?repo=free-fedora-rawhide&arch=x86_64 the answer is created by one of four CentOS7 systems running the latest MirrorManager2 code.
RPM Fusion also has the same mirrorlist access statistics like Fedora: http://mirrors.rpmfusion.org/statistics/.
I still need to update the back-end system which is only one system instead of six different system like in the Fedora infrastructure.