cseug25-roundup

Author: Daan Hoogland

blog/2025-05-26-cseug25-roundup/Bobby.png

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+---
+layout: post
+title: CloudStack European User Group 2025 – Event Roundup
+tags: [roundup]
+authors: [antonia]
+slug: cseug25-roundup
+---
+
+![](CSEUG-roundup.png "Blog Header Image")
+
+The Apache CloudStack European User Group (CSEUG) convened on May 8th
+in Vienna, Austria, marking its return with a technically focused
+event that brought together a dynamic cross-section of users,
+contributors, developers, and operators from across Europe. Hosted at
+Quartier Belvedere Central, the event delivered a full day of in-depth
+technical sessions, collaborative community interactions, and
+practical insights into real-world deployments and advancements within
+the Apache CloudStack ecosystem.
+
+<!-- truncate -->
+
+Organised annually by the CloudStack EU Community and with the support
+of longtime contributors and sponsors including ShapeBlue, ProIO, and
+LINBIT, the event continues to grow, reflecting the maturity and
+vitality of the Apache CloudStack community.
+
+## A Full Day of Technical Deep Dives and Community Learning
+
+The agenda for this year’s event included presentations covering core
+concepts, advanced configuration techniques, case studies on
+production deployments, and proposals for future development. The
+program was structured to accommodate both new users interested in
+open-source cloud orchestration and experienced practitioners working
+with large-scale Apache CloudStack environments.
+
+<div class="col col-3 col-lg text-center">
+  <a class="button button--primary" href="https://www.youtube.com/playlist?list=PLnIKk7GjgFlaMg8GePeADgfC-XLmUD8-l" target="_blank">Watch Session Recordings</a>
+</div>
+
+Below you can find the sessions slides, abstracts, as well as
+speaker’s social links in case you would like to connect and have any
+questions about their session!
+
+**Access each session's slides by clicking onto the presentation graphic.**
+
+## Apache CloudStack 101 – What’s New and What’s Coming, [Giles Sirett](https://www.linkedin.com/in/gilessirett/), [ShapeBlue](https://www.shapeblue.com/)
+
+Giles Sirett, CEO of ShapeBlue kicked off the day with an accessible
+yet thorough overview of Apache CloudStack’s core capabilities. He
+walked attendees through the project’s architecture, support for
+multiple hypervisors (KVM, VMware, XCP-ng), and how CloudStack
+integrates into existing IT environments. The session also highlighted
+new features from recent releases and shared exciting developments on
+the roadmap, including enhancements in UI/UX, support for
+containerized workloads, and improvements in scalability and
+automation.
+
+[![](Giles.png "What's New and What's Coming - slides")](https://www.slideshare.net/slideshow/cloudstack-euug-may-2025-introduction-101-giles-sirett-pdf/279333961)
+
+## Storage Setup for LINSTOR/DRBD/CloudStack, [Rene Peinthor](https://github.com/rp-), [LINBIT](https://linbit.com/)
+
+Rene Peinthor, Software Engineer at LINBIT, presented a comparative
+analysis of various storage setups including LVM-Thin, ZFS, and
+striped volumes, explaining the trade-offs between performance,
+failure domains, and operational complexity. Attendees gained
+actionable insights into designing optimized storage backends using
+LINSTOR with CloudStack, and learned best practices for balancing high
+availability with efficient resource utilization.
+
+[![](Rene.png "Storage Setup for LINSTOR/DRBD/CloudStack - slides")](https://www.slideshare.net/slideshow/storage-setup-for-linstor-drbd-cloudstack/279334610)
+
+## I’d Like to Resell Your CloudStack Services, But..., [Brian Turnbow](https://www.linkedin.com/in/brianturnbow/), [CDLAN](https://www.cdlan.it/en/)
+
+Brian Turnbow, DCT at CDLAN, shared a candid case study on onboarding
+a white-label reseller into CDLAN’s CloudStack-powered platform. The
+talk addressed the operational and technical challenges faced when
+customers require custom IP ranges, brand identity, billing
+integration, and even their own network capacity. This session
+resonated with providers looking to expand their customer base while
+maintaining operational control and compliance.
+
+[![](Brian.png "I’d Like to Resell Your CloudStack Services, But... - slides")](https://www.slideshare.net/slideshow/i-d-like-to-resell-your-cloudstack-services-but/279334685)
+
+## Fully Open-Source Private Clouds: Freedom, Security, and Control, [Swen Brüseke](https://www.linkedin.com/in/swen-br%C3%BCseke-391912193/), [ProIO](https://www.proio.com/)
+
+In a compelling argument for digital sovereignty, SwenBrüseke, CEO at
+ProIO, presented ProIO’s fully open-source approach to building secure
+and performant private clouds. By combining Apache CloudStack with
+LINBIT’s storage stack, and maintaining transparency through
+professional support, ProIO demonstrates how organizations can reduce
+dependency on proprietary solutions while ensuring reliability,
+flexibility, and security. He also offered a comparative evaluation of
+CloudStack vs. other solutions like Proxmox, highlighting CloudStack’s
+strengths in automation, scalability, and multi-tenancy.
+
+[![](Swen.png "Fully Open-Source Private Clouds: Freedom, Security, and Control - slides")](https://www.slideshare.net/slideshow/ully-open-source-private-clouds-freedom-security-and-control/279381615)
+
+## CloudStack + KVM: Your Local Cloud Lab, [Francisco Arencibia](https://jotelulu.com/en-gb/), [Jotelulu](https://jotelulu.com/en-gb/)
+
+Francisco Arencibia, Senior DevOps Engineer at Jotelulu, provided a
+highly practical guide for setting up a CloudStack-based private cloud
+lab using KVM, ideal for testing and development. Attendees learned
+how to automate the entire setup using Ansible, making it simple to
+deploy and tear down environments. This session served as a great
+entry point for developers and sysadmins looking to experiment with
+CloudStack or prototype cloud-native applications.
+
+[![](Francisco.png "CloudStack + KVM: Your Local Cloud Lab - slides")](https://www.slideshare.net/slideshow/cloudstack-kvm-your-local-cloud-lab/279334768)
+
+## Proposed Feature: Monitoring and Managing Cloud Usage Costs in Apache CloudStack, [Grégoire Lamodiere](https://linkedin.com/in/grégoire-lamodière-04171210) & [Joffrey Luangsaysana](https://www.linkedin.com/in/jluang/), [DIMSI](https://dimsi.fr)
+
+Grégoire Lamodiere, CEO and Joffrey Luangsaysana, Cloud Expert at
+DIMSI introduced a proposed native feature aimed at tracking and
+visualizing cloud resource usage and cost within CloudStack. Gregoire
+and Joffrey emphasized the need for better visibility for both
+administrators and end users—especially in multi-tenant or MSP
+environments. The session invited feedback from the community,
+igniting discussion around metrics collection, usage-based billing,
+and potential integrations with third-party tools. The proposal
+underscores the community’s commitment to evolving CloudStack in
+response to real-world needs.
+
+[![](Grégoire&Joffrey.png "Proposed Feature: Monitoring and Managing Cloud Usage Costs in Apache CloudStac - slides")](https://www.slideshare.net/slideshow/proposed-feature-monitoring-and-managing-cloud-usage-costs-in-apache-cloudstack/279334953)
+
+## Stretching CloudStack Over Multiple Datacenters, [Wido den Hollander](https://www.linkedin.com/in/widodh/), [Your.Online](https://your.online/)
+
+Scaling CloudStack beyond a single datacenter brings new architectural
+considerations. Wido den Hollander, CTO at Your.Online, explored
+techniques for spanning CloudStack zones across multiple physical
+locations, including challenges in networking, storage, and
+orchestration. Drawing from operational experience, he outlined
+patterns for inter-datacenter VM migration and high availability while
+preserving CloudStack's logical zone constructs.
+
+[![](Wido.png "Stretching CloudStack Over Multiple Datacenters - slides")](https://www.slideshare.net/slideshow/stretching-cloudstack-over-multiple-datacenters/279335005)
+
+## Pushing the Limits: CloudStack at 25K Hosts, [Boris Stoyanov](https://www.linkedin.com/in/widodh/), [ShapeBlue](https://www.shapeblue.com/)
+
+The closing session was a standout, as Boris Stoyanov, QA Manager at
+ShapeBlue walked the audience through a large-scale load testing
+initiative involving 25,000 hosts in a lab environment. This technical
+deep dive included performance benchmarks, system bottlenecks, and the
+specific code changes implemented to support this level of
+scalability. The findings will inform future development efforts to
+further strengthen CloudStack’s ability to support massive,
+distributed infrastructure.
+
+[![](Bobby.png "Pushing the Limits: CloudStack at 25K Hosts - slides")](https://www.slideshare.net/slideshow/pushing-the-limits-cloudstack-at-25k-hosts/279335083)
+
+## Thank You for Making It a Success
+
+The Apache CloudStack community would like to extend a sincere thank
+you to ShapeBlue, ProIO, and LINBIT for their continued sponsorship
+and support. These events wouldn’t be possible without the volunteers,
+contributors, and passionate users who give their time and energy to
+make each gathering meaningful.
+
+We’re already looking forward to the upcoming CloudStack India User
+Group 2025, taking place on 11th July at the Yotta Data Centre Park
+(D1) in Greater Noida, Uttar Pradesh. Shortly after, we’ll be
+gathering again for the next CloudStack European User Group meeting in
+London on 18th September. And finally, the highlight of the year—the
+CloudStack Collaboration Conference—will be held in Milan, Italy from
+19th to 21st November. As the most significant CloudStack event
+globally, the conference brings together professionals from around the
+world to connect, share knowledge, and shape the future of open-source
+cloud infrastructure. Until then, stay involved, stay curious, and
+keep building!