As you probably know, CentOS8 was published today and the TripleO team will use this platform in the CI very soon.
Today I spent a bit of time trying to deploy an undercloud on centos8 and I had some issues, and I wanted to share them in case some other folks do testing as well:

https://etherpad.openstack.org/p/tripleo-centos8

Note that this is really early stage testing, and some work will have to happen on the packaging side mainly.
Feel free to contribute,
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Emilien Macchi