RH also provides immutable OSes (Kairo uses some of their stuff) via Fedora Atomic and Fedora CoreOS, so for a single RHEL-like immutable instance, i'd just go

RH also provides immutable OSes (Kairo uses some of their stuff) via Fedora Atomic and Fedora CoreOS, so for a single RHEL-like immutable instance, i'd just go CoreOS or Kinoite The main reasons to use Kairo are perhaps more around the P2P mesh, using Cloudinit, deb vs rpm etc.