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

Technology

This month, we’ve introduced updates to help you build more powerful and flexible cloud environments with OpenNebula.

First, we’ve launched a new RabbitMQ appliance in our Community Marketplace. This lightweight, production-ready OneApp simplifies the deployment of RabbitMQ across your OpenNebula infrastructure, offering a scalable messaging layer for microservices, IoT systems, and real-time applications.

Additionally, for those exploring AI workloads, we’ve expanded our AI-as-a-Service stack with a new version of the Ray Appliance. This robust tool supports multi-tenant deployments of large language models, featuring GPU acceleration, compatibility with Hugging Face and vLLM frameworks, and seamless integration with advanced hardware for high-performance, infrastructure agnostic AI operations. A detailed screencast is available in the blog, walking you through the setup, model selection, and deployment on a GPU-enabled host.

📡 MESSAGE FROM THE ENGINEERING DECK
After an internal beta, we are happy to confirm that May 2025 will come with OpenNebula 7.0 ‘Phoenix’ :) Wait until you see the new Sunstone interface, revamped to have a more modern look. This is just the first step of more to come that will improve the User Experience in OpenNebula to unknown levels!

Community

We’re inviting community members to help translate OpenNebula 7.0. With our next major release on the horizon, now’s the perfect time to contribute translations for the Sunstone GUI and ensure that OpenNebula remains accessible to users around the world.

White Paper

New White Paper: Enabling 5G with OpenNebula

Discover how OpenNebula powers full 5G network deployments—from UE simulators to 5G Core—across diverse projects and use cases. Our latest white paper shows how we support both open source and proprietary solutions to build flexible, vendor-neutral cloud-edge environments. Download the white paper here.

Experiences

OpenNebula Named in STL Partners’ “50 Edge Companies to Watch”

OpenNebula Systems has been recognized as one of the “50 Edge Companies to Watch in 2025” by STL Partners, joining industry leaders like Telefónica, Dell Technologies, Orange Business, and SUSE. This honor underscores our ongoing innovation in edge computing and digital infrastructure. Full details 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

In April, we hosted two webinars and two training sessions. We kicked things off with an OpenNebula Basics training session, perfect for those getting started with the platform—if you missed it, you can catch the recording here. We then turned our focus to telco and edge environments with a webinar on the future of 5G neutral hosting—take a look at the session here. Our second training offered a deep dive into OneDeploy and how it simplifies automated infrastructure provisioning—the full session is available here. To close the month, we hosted a forward-looking panel on building a multi-provider sovereign cloud for AI—don’t miss the insightful discussion, available here.

Data Center World 2025, Washington D.C., April 14-17

Thank you to everyone who visited us at Booth 685 during Data Center World in Washington D.C. It was a great opportunity to connect and showcase how our solutions can help transform IT environments and provide a robust alternative to VMware. For key takeaways and highlights from the event, check out our recap blog.

What’s Coming in May (and June!)

Webinars and TechDays

We have four upcoming webinars this May, including:

• OpenNebula in Action: Live Demo—May 7 at 5 PM CEST. Learn more and register here.
• An Introduction to OpenNebula Operations—May 14 at 5 PM CEST. Learn more and register here.
• Panel: Accelerating AI Inference at the 5G Edge—May 21 at 5 PM CEST. Learn more and register here.
• Building VM Images Using OneApps Toolset—May 28 at 5 PM CEST. Learn more and register here.

Point Zero Forum, Zurich, May 5-7

Alberto P. Martí  will join a roundtable on digital sovereignty in Europe at Point Zero Forum, May 5–7 in Zurich. The session will cover strategic digital capabilities, EU privacy standards, and global perspectives on technological autonomy. More details here. 

TechDay Madrid, May 7

Co-organized with Digital Realty, a global provider of data center, colocation, and interconnection solutions, this event will discuss how AI Factories are redefining Data Centers and enabling the next era of AI, and showcase how to build and operate AI Factories using sovereign, open source cloud infrastructure. For more details, agenda, and free registration, click here. Secure your spot before it’s gone!

5G Forum, Seville, May 12-16

Join us at 5G Forum, where OpenNebula—an official event partner—will present on intelligent edge management over 5G networks. Visit our exhibitor space to connect and explore a range of innovations, including live demos on neutral hosting for public and private 5G through open solutions, among other developments. Click here for the agenda.

Red Hat Summit 2025, Boston, May 19-22

If you’re attending Red Hat Summit 2025 don’t miss the chance to visit us and discover why organizations worldwide are choosing OpenNebula. Learn how our integration with Red Hat solutions can simplify and optimize your cloud operations. Check out our blog post and book a meeting here.

Gitex Europe, Berlin, May 21-23

Alberto P. Martí will join a panel at GITEX Europe in Berlin, discussing Europe’s edge AI and cloud strategy as part of the IPCEI-CIS initiative. The session will highlight efforts to boost competitiveness through decentralized technologies. For agenda details, click 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. Upcoming sessions in early June are open for registration:

• June 3: Certified Practitioner Training (Beginner level)
• June 4: Certified Administrator Training (Intermediate level)
• June 5: Certified Expert Training (Advanced level)

Don’t miss out, secure your spot here.

Knowledge Base Articles 

Exclusive Resources for OpenNebula Subscribers

Configuring a system LVM Datastore in OpenNebula allows for flexible storage management, making it easier to handle virtual machine disks. This article will guide you through the essential steps to set up and configure the LVM Datastore efficiently.

Configuring LVM Datastore with iSCSI and Multipath in OpenNebula

To set up a highly available LVM Datastore with a shared LUN over iSCSI, follow these steps:

1. Install iSCSI tools: Install open-iscsi on the compute nodes to connect to the iSCSI targets provided by your SAN.
   
2. Configure Multipath: Enable multipath for redundancy, ensuring fault tolerance via multiple network paths.
   
3. Set Up LVM: Create Physical Volumes (PVs) on the multipath devices, and configure a Volume Group (VG) for flexible storage management.
   
4. Create LVM Datastore in OpenNebula: Set up the datastore using the fs_lvm driver, and configure your compute nodes and storage paths.

This setup improves storage availability, scalability, and performance by using LVM over iSCSI with multipath for redundancy.

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