Four hundred servers need a security patch, they run five different Linux distributions, and a spreadsheet says which ones were done. Uyuni replaces that spreadsheet: one server inventories your fleet, mirrors the software channels each machine subscribes to, and shows exactly which patches and errata apply where. Administrators register clients manually, by bootstrap script, or automatically through activation keys, then group them into systems sets so an action aimed at a group lands on staging first and production on schedule. Patch management creates and applies errata with CVE context, and CVE audits check systems against vulnerability data so you can prove a fix landed instead of believing it did. Configuration channels push files, directories, and symbolic links rendered with Jinja templates through the built-in Salt master, which also runs remote commands and orchestration across tens of thousands of clients. The Content Lifecycle Manager promotes package sets from development through testing to production channels, so every environment consumes tested content in order. Provisioning reinstalls or network-boots machines through PXE with AutoYaST, Kickstart, or cloud-init profiles, proxies cache content for branch offices, and built-in Prometheus and Grafana monitoring watches the management server itself. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-2.0 licensed.