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CoreOS Container Linux
Acquired & Killed — May 2020
What was it?
Minimal Linux distro built for containers. Auto-updates, etcd, fleet orchestration.
What happened?
Red Hat acquired CoreOS in 2018 for $250M. Merged into Fedora CoreOS and RHEL CoreOS.
Migration Guide
Fedora CoreOS (successor), Flatcar Container Linux (community fork), or Talos Linux.