OS as a Service at Meta Platforms

https://media.ccc.de/v/all-systems-go... I overview how OS management is done at Meta. We run millions of Linux servers and we have to make sure that OS gets updated on all of them in a given period of time. To do that we developed several products: MetalOS (Image based version of CentOS), Antlir (image builder) and Rolling OS Update (a service that keeps a set of DNF repos in sync with upstream repos and uses them to update OS ) Serge Dubrouski https://cfp.all-systems-go.io/all-sys... #asg2025 Licensed to the public under https://creativecommons.org/licenses/...