Launch FAQ: Does Fedora CoreOS replace Fedora Atomic Host? What happens to Fedora Atomic Host and CentOS Atomic Host?


Fedora CoreOS will also become the successor to Fedora Atomic Host. The current plan is for Fedora Atomic Host to have at least a 29 version and 6 months of lifecycle.

CentOS Atomic Host will continue producing downstream rebuilds of RHEL Atomic Host and will align with the end-of-life. The Fedora CoreOS project will be the consolidation point for the community distributions. Users are encouraged to move there in the future.


I just started a project deploying Fedora Atomic Host 28 on Digital Ocean. How long will that be supported? Will I need to migrate to Fedora Atomic Host 29 and migrate again to Fedora CoreOS, and if so, roughly when?


Fedora Atomic Host will probably be around until some time in 2019. Maybe @dustymabe has news on that front. You won’t need to migrate to Fedora Atomic Host 29, but it’s recommended to upgrade - it should be easy and painless to do, that’s what libostree is about.

A date for a Fedora CoreOS release that is recommended for production is still not in sight. My guess would be spring 2019, but I’ll let Dusty chime in here as I don’t know any dates for this.


Currently we are targeting Fedora 30 for Fedora CoreOS first launch. Fedora 30 would also be the first release with no Atomic Host.

We do recommend that you update to the latest release of Fedora Atomic Host soon after it’s released because that is where we spend the most attention for testing updates. Once Fedora CoreOS is available Fedora 29 Atomic Host will receive updates for some time, so you should have a few months time to switch.


OK … that makes sense, So Fedora Atomic Host 28 now on Digital Ocean, 29 when the upgrade is available (which I’m assuming I would do from the command line) and Fedora CoreOS (30?) in the spring.


Will Fedora Atomic be able to do an in place upgrade to Fedora CoreOS once it’s available?


There is no clear answer on that yet, but the answer I’ve gotten so far is this: if it’s a standalone machine, you’ll possibly be able to do an upgrade, if it’s a full on cluster there might be unforeseen issues and a re-install is recommended.

Bear in mind it’s not yet released so that might well change.