Newsroom

Important security updates for Ceph Tentacle (v20.2.4) and Squid (v19.2.6): Learn about the resolved vulnerabilities, how to assess your risk, and key steps for post-upgrade key rotation and RGW STS tokens.

Welcome to the premier gathering for developers, storage architects, and admins in Germany, Austria, and Switzerland. Join us for a full day dedicated entirely to Ceph engineering, upstream updates, and community networking.

ContainerDays are back in Hamburg from September 2–4, 2026. While we won't have a booth this year, our team will be walking the floor for all three days.

120 Petabytes of storage in production: How do you actually make that work at scale? Meet us at S2N in Berlin and catch our CEO Joachim Kraftmayer’s talk on Kubernetes, Ceph, and GitOps.

How do you run 120 PB of storage across 30 global regions with full digital sovereignty and zero vendor lock-in? Discover how SAP & CLYSO leverage Ceph and Rook at scale in our new technical whitepaper.

From September 7–10, 2026, the RWTH Aachen will host the joint DINI and ZKI conference. CLYSO will be there as sponsor with dedicated booth.

Over 100 clients requesting a single RADOS object triggered messenger throttling on a Ceph Reef OSD, causing CPU spikes above 300% and slow ops across unrelated PGs. Read our post-mortem detailing the root cause, the osd_client_message_cap throttle, and its link to Ceph Tracker #62512.

A new legal opinion from the German Bundestag confirms that mandating open-source software in public tenders is fully procurement-compliant. In fact, it is recommended to dissolve costly vendor lock-ins. Read how this changes public IT infrastructure.

Why did we build CLYSO? In this episode of the Insider Research Podcast (German), our CEO Joachim Kraftmayer shares the story behind our founding vision, why we chose to focus on the toughest storage challenges, and how we are making Ceph enterprise-ready.