Welcome to our newsletter! Dive into this edition to catch up on our latest updates, event highlights, future plans, and more.

Technology

This month marks a major leap forward for OpenNebula as we continue to expand the platform’s capabilities for enterprise, AI, and edge deployments.

We’ve just released the beta version of OpenNebula 7.0 “Phoenix”—our next-generation platform! It includes key features for VMware migration, AI and GPU workload support, improved storage and backup, and UI enhancements. OpenNebula 7.0 lays the foundation for a more modular, flexible, and future-proof cloud management experience. Explore the full details here.

Next up, OpenNebula enables secure, decentralized AI with FedX—letting you train models across clouds without moving sensitive data. You can learn more and watch the full demo that walks you through the entire process. Read more here.

Finally, we explored the growing trend of cloud repatriation—OpenNebula simplifies moving workloads from hyperscalers to on-prem edge infrastructure. The post highlights how OpenNebula enables organizations to regain control over infrastructure, reduce costs, and ensure sovereignty. See the full post here.

📡 MESSAGE FROM THE ENGINEERING DECK
Hope everyone is happy with the 7.0 Phoenix Beta so far! Please note that your feedback on your beta is of tremendous value to us, so don’t be shy and don’t hesitate to report your findings, suggestions and complaints in our forum. Working hard now to get a release candidate and a final version out there by June 2025. And yes, already working on the 7.2 roadmap, stay tuned!

Innovation

We’re thrilled to welcome six new cloud service providers —ADI Data Center Euskadi, Clever Cloud, CloudFerro, OVHcloud, Scaleway, and Stackscale—to the EU-funded Virt8ra project! This initiative is building a federated European network of cloud providers, and the latest additions mark a major step in scaling the infrastructure. With 14 providers now on board, Virt8ra is proving the power of open, sovereign cloud technologies in action. You can read the announcement here.

Want to get involved or learn more? Check out the Virt8ra project site.

Experiences

Partner with Dell Technologies

OpenNebula has officially achieved telecom certification with Dell Technologies for AI workloads. This milestone proves OpenNebula’s readiness for sovereign, high-performance, AI and edge deployments in telecom and enterprise environments. Read more here.

OpenNebula Reviews on Gartner

Discover what users are saying about OpenNebula on Gartner Peer Insights!

Are you using OpenNebula? We’d love your feedback! Submit your review here, and as a thank-you, receive a gift card once it’s published.

Outreach

Webinars

We kicked off the month with “OpenNebula In Action: Live Demo” walking attendees through real-time use cases, showcasing how to deploy and manage cloud infrastructure with ease using OpenNebula. Watch the demo.

Next up, our “An Introduction to OpenNebula Operations”, a perfect starting point for those getting familiar with the platform’s core features and architecture. Learn more.

To round out the month, we hosted a deep-dive session on building VM images using the OneApps Toolset, a powerful resource for streamlining your deployment pipeline and creating reusable, customizable workloads. Watch the session here.

Events

TechDay Madrid, May 7

Earlier this month, we hosted our TechDay Madrid, focused on building sovereign AI factories. The event demonstrated how OpenNebula empowers sovereign AI Factories with on-premise LLM deployment, hybrid cloud orchestration, and real-world success stories from Telefónica and AI Sweden. Check out the blog post for a full recap.

Red Hat Summit, Boston, MA, May 19-22

We had a fantastic time at the Red Hat Summit in Boston, where we showcased how OpenNebula integrates with open technologies to build scalable, vendor-neutral cloud infrastructures. From AI to edge computing, the interest in open source alternatives to proprietary stacks continues to grow. Don’t miss our event recap for all the key highlights.

5G Forum, Seville, May 12-14, and Telco Edge Forum (online), May 20

We also joined industry leaders at the 5G Forum and the Telco Edge Forum to explore the intersection of edge computing, 5G, and telecom infrastructure. These sessions confirmed a growing demand for open, telecom-certified platforms like OpenNebula to support next-generation infrastructure and AI applications.

GITEX Europe, Berlin, May 23

To wrap up the month, we attended GITEX Europe, highlighting the EU tech industry’s push for decentralized edge cloud infrastructure to boost Europe’s AI competitiveness and sovereignty, and sharing how OpenNebula supports sovereign AI Factories and multi-cloud deployments.

What’s Coming in June (and July!)

Webinars

We have two upcoming webinars this June and an online panel in July, including:

• Replacing VMware with OpenNebula: What You Need to Know—June 4 at 5 PM CEST/11 AM EDT. Learn more and register here.
• An Introduction to OpenNebula Operations—June 11 at 5 PM CEST/11 AM EDT. Learn more and register here.
• Panel: Accelerating AI Inference at the 5G Edge—July 2 at 5 PM CEST/11 AM EDT. Learn more and register here.

EuCNC & 6G Summit, Ponzán, June 4

We’re heading to EuCNC & 6G Summit 2025 in Poznań. As part of Europe’s leading conference on advanced communications technologies, we’ll be focusing on the crucial role of software and open source in driving innovation and collaboration across the telecom ecosystem. Check out the full agenda here.

NVIDIA GTC, Paris, June 10-12

We’re excited to share that OpenNebula will be at NVIDIA GTC Paris 2025, part of Viva Technology 2025, showcasing how organizations can build sovereign, on-premises AI infrastructure using our flexible, enterprise-ready cloud platform—connect with us to schedule a meeting.

TechDay, Paris, June 18

This exclusive event is focused on building and operating AI Factories using sovereign, open source cloud infrastructure. It’s ideal for enterprises, cloud providers, telcos, and AI/HPC centers interested in delivering scalable and secure AI workloads, while ensuring data sovereignty. For more details, agenda, and free registration, click here. Secure your spot before it’s gone!

OpenSouth Code, Malaga, June 20-21

OpenNebula is coming to OpenSouth Code 2025 in Malaga. We’ll be sharing insights into building sovereign, vendor-neutral cloud environments and running distributed AI workloads across hybrid and edge infrastructures. Whether you’re a developer, sysadmin, or cloud enthusiast—this is your chance to connect with our team and explore the latest in open cloud innovation. Full details here.

OpenNebula Academy

A quick reminder that we offer certified training sessions for all skill levels. These sessions provide valuable hands-on experience to enhance your OpenNebula expertise and advance your career. Check out the next sessions and register here!

Knowledge Base Articles 

Exclusive Resources for OpenNebula Subscribers

Need to boost VM performance for demanding workloads? This month’s Knowledge Base article walks you through practical steps to fine-tune images in OpenNebula for improved responsiveness.

How to Tune Images for Better VM Performance

When dealing with latency-sensitive applications, tuning your VM images can make a significant difference. This guide covers performance optimization techniques using the latest Ubuntu 24.04 image from the OpenNebula Public Marketplace.

Key steps include:

1. Decompress and defragment your qcow2 images using qemu-img convert to reduce I/O bottlenecks.
   
2. Update cache and I/O policies—use CACHE=”none” for safer operation, or CACHE=”writeback” for faster performance (with risks).
   
3. Use virtio drivers and confirm proper configuration of NFS datastores and 802.1Q networking for maximum efficiency.

With these changes, you can unlock significantly faster VM response times—ideal for high-performance or edge computing workloads.

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