SystemD creator Lennart Poettering left Red Hat for Microsoft in 2022, but 10 months ago left to co-found Amutable a company that aims to build cryptographically verified Linux systems that stay trusted over time. It's FOSS calls it "a read-only, image-based system where every machine produces signed reports of its own state" — and signups are now open for a private preview: Before announcing this Linux-based implementation, Amutable had released two open source tools. tine, a Buck2-based build system that composes OS images; available under MPL-2.0, and Quarry, a TUF-based tool that distributes those images to machines; available under Apache-2.0. What Amutable Foundations brings to the table is a service where Amutable runs the images, update repositories, control plane and vulnerability fixes for organizations and individuals who operate their own systems. No license has been stated for those company-run parts, and the preview announcement does not say how much of Foundations beyond tine and Quarry will be open source. Software and configuration both ship as signed images, and a machine boots only what is signed. Because there is no package manager and no SSH or interactive shell, a change means giving every machine in your fleet a new signed image. Its images are reproducible, come with a software bill of materials (SBOM) and are built from pinned inputs of whichever distribution you pick, with tine being able to import packages from Fedora or CentOS Stream. Each machine sends a signed report that records what it booted, from the firmware and boot loader up to the kernel and OS, plus the configuration it runs... Amutable's control plane verifies reports from systemd-report, an experimental command in systemd 260 that the company helped build. It compares each one with the declared state and flags machines that deviate. A rollout only continues while machines can show they are in a good state... Amutable is signup formlooking for teams that manage Linux fleets and need to show what state each machine is in. It expects to start bringing the first 'design partners,' as it calls them, on board over the coming weeks.

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