Thanks all! We'll be on stage with a Cozystack demo!

Wednesday November 12, 2025 1:45pm - 2:10pm EST (7:45pm - 8:10pm CET)

How to find this stage

💪 We’re excited to introduce the talk "How we build a multi-AZ cloud in Switzerland", by Matthieu Robin (Hidora) at CozySummit Virtual 2025.

CozySummit will take place online on December 3, 2025. The session starts at 16:05 CET (9:05 AM CT).

What this talk is about: "As a cloud provider, we spend time to find a solution to make a multi-AZ IaaS solution. Our goals was to find the best orchestrator, the very high-availability system, and give the full secure system to our customers. I'll talk about our journey with different solutions and then Cozystack. Speaker: Matthieu Robin CEO by Day, DevOps Evangelist Always Company: Hidora Passionate entrepreneur & CEO of Hidora, leading cloud/DevOps adoption. Founder of DevOps Geneva Meetup & DevOpsDays Geneva. Professor at HEG teaching Service Industrialization. Volunteer firefighter committed to community service. Dedicated to innovation, education & fostering DevOps collaboration".

Register for CozySummit here: https://community.cncf.io/events/details/cncf-virtual-project-events-hosted-by-cncf-presents-cozysummit-virtual-2025

This event will showcase how Cozystack empowers teams to build their own full-featured private clouds or AWS-alternative public clouds on owned or leased hardware. Learn how Cozystack reduces public cloud dependency, ensures data control, and enables digital sovereignty.

Share with your friends and colleagues — and join us live! 🚀

💪 We’re excited to introduce the talk "Home Lab to the Moon and Back", by Kingdon Barrett (Navteca, LLC) at CozySummit Virtual 2025.

CozySummit will take place online on December 3, 2025. The session starts at 16:40 CET (9:40 AM CT).

What this talk is about: "Running CozyStack in a home lab can be equal parts fun and furnace — especially when unused workloads turn into a very real space heater. This talk explores the practical tradeoffs involved in running CozyStack at home, some strategies for shifting services to the cloud or serverless, and powering down X86 nodes for ARM64 to save energy and cut down on waste heat - while still maintaining a high standard of availability and measuring the performance on the CozyStack platform. We'll look at ways to measure the actual energy cost of a CozyStack cluster, strategies for moving or pinning workloads by architecture with node selectors, and trade-offs of relying on external storage to keep the footprint lean. Along the way, I'll give a demo of SpinKube, built on top of custom Talos images (with a spin runtimeclass extension), showing how the developer experience for CozyStack enables deep customization and hands-on experimentation with Talos Linux. The focus isn't on one right setup, but on how CozyStack makes it possible to explore, measure, and balance cost, energy, and reliability in any environment - whether in the basement, the cloud, or somewhere in between. Speaker: Kingdon Barrett Flux Maintainer, DevOps Engineer Company: Navteca, LLC. Kingdon Barrett is a Flux maintainer and a DevOps Engineer at Navteca, presently working on a project called Science Cloud for the Goddard Space Flight Center and Science Mission Directorate at NASA. He is a Ruby/Go developer. Find Kingdon at Flux Bug Scrub!"

Register for CozySummit here: https://community.cncf.io/events/details/cncf-virtual-project-events-hosted-by-cncf-presents-cozysummit-virtual-2025/

This event will showcase how Cozystack empowers teams to build their own full-featured private clouds or AWS-alternative public clouds on owned or leased hardware. Learn how Cozystack reduces public cloud dependency, ensures data control, and enables digital sovereignty.

Share with your friends and colleagues — and join us live! 🚀

💪 We’re excited to introduce the talk "Extensibility without chaos: lessons from building Cozystack", by Timofei Larkin (Ænix) at CozySummit Virtual 2025.

CozySummit will take place online on December 3, 2025. The session starts at 17:20 CET (10:20 AM CT).

What this talk is about: "Flexibility is what every platform promises. Extensibility is what developers actually need. But making a system both adaptable and reliable is one of the hardest problems in engineering. At Cozystack, we face this daily. As an open-source, community-driven alternative to traditional cloud platforms, our users deploy in wildly different environments. Meeting their needs means more than writing operators — it requires a modular framework where APIs stay stable, even as the system evolves. In this talk, I’ll share the engineering trade-offs behind Cozystack’s newest features: how we design for pluggability without breaking contracts, what worked (and what didn’t) when balancing flexibility with simplicity, and how these lessons can apply to any extensible platform. My aim is to show not just what we built, but the principles that helped us turn ambition into working software. Speaker: Timofei Larkin Head of Development Company: Ænix Tim leads development at Ænix. Before Ænix Tim spent several years as a cloud/infra engineer at various enterprises."

Register for CozySummit here: https://community.cncf.io/events/details/cncf-virtual-project-events-hosted-by-cncf-presents-cozysummit-virtual-2025

This event will showcase how Cozystack empowers teams to build their own full-featured private clouds or AWS-alternative public clouds on owned or leased hardware. Learn how Cozystack reduces public cloud dependency, ensures data control, and enables digital sovereignty.

Share with your friends and colleagues — and join us live! 🚀

🎥 Cozystack community meeting 2025-11-13: talos-csr-signer, VPC support, VNC console, Talm web UI

https://youtu.be/g_7nbiIj3uo

Cozystack is a free PaaS and framework for building clouds | CNCF Sandbox Project

Agenda and notes

- talos-csr-signer - native Kubernetes controlplanes and Talos Workers (presented by Dario, maintainer of Kamaji)
- Demo: Talos OS and Kamaji: Together for a Better Kubernetes https://github.com/clastix/talos-csr-signer
- User-facing changes for VPC support in Cozystack (presented by Timofey Larkin)
- VNC console for accessing VMs in web (presented by Andrei Kvapil)

Open Floor:
- Discussion about moving to GitRepositories (if we'll have a time)
- Talm web UI
- Customizable root ingress https://github.com/cozystack/cozystack/issues/1441

Join the community:
Telegram group t.me/cozystack
Slack group (Get invite at https://slack.kubernetes.io)

Cozystack resources:
https://cozystack.io
https://cozystack.io/docs/get-started
https://cozystack.io/blog
https://github.com/aenix-io/cozystack

Ænix resources
https://aenix.io
https://news.1rj.ru/str/aenix_io 
https://news.1rj.ru/str/aenix_community

💪 We’re excited to introduce the talk "Integrating Proxmox with CozyStack: Advanced Container and Pod Isolation", by Marian Koreniuk at CozySummit Virtual 2025.

CozySummit will take place online on December 3, 2025. The session starts at 18:10 CET (11:10 AM CT).

What this talk is about: "In this session, I will present my ongoing work on integrating Proxmox VE into CozyStack to provide advanced container and pod isolation for Kubernetes workloads. I will explain why Proxmox was chosen: its built-in high availability, backup capabilities, and efficient LXC containers, which offer lightweight and secure sandboxing. I will discuss the challenges of integrating Proxmox with Kubernetes, including CNI networking, CSI storage, CRI runtime integration, security considerations, and disaster recovery planning. Finally, I will introduce my project proxmox-lxcri and other supporting tools that enable deep integration, allowing CozyStack to leverage Proxmox for secure, scalable, and highly available workloads. Attendees will gain insights into architectural decisions, trade-offs, and practical steps for building a production-ready Kubernetes platform. Speaker: Marian Koreniuk Independent platform engineer I am a Senior DevOps Engineer with deep expertise in Kubernetes, Proxmox, MySQL, Redis, networking, and cloud technologies. My background includes developing firewall modules, building secure and scalable platforms, and working in high-load environments. I specialize in DevSecOps and platform engineering, focusing on automation and reliability. Currently, I actively program in Zig, which I consider the language of the future, and contribute to open-source projects."

Register for CozySummit here: https://community.cncf.io/events/details/cncf-virtual-project-events-hosted-by-cncf-presents-cozysummit-virtual-2025

This event will showcase how Cozystack empowers teams to build their own full-featured private clouds or AWS-alternative public clouds on owned or leased hardware. Learn how Cozystack reduces public cloud dependency, ensures data control, and enables digital sovereignty.

Share with your friends and colleagues — and join us live! 🚀

💪 We’re excited to introduce the talk "SeaweedFS S3 API in 2025: Enterprise‑grade security and control", by Chris Lu (SeaweedFS) at CozySummit Virtual 2025.

CozySummit will take place online on December 3, 2025. The session starts at 18:25 CET (11:25 AM CT).

What this talk is about: "This talk focuses on SeaweedFS’s S3 API enhancements released mid‑2025, which covers server-side encryption modes (SSE‑S3, SSE‑KMS, SSE‑C), advanced IAM, conditional reads/writes for bandwidth savings and cache safety, and data governance features including Versioning and Object Lock/Retention. We’ll close with future development plans. Speaker: Chris Lu SeaweedFS Creator Company: SeaweedFS Chris Lu is the creator and lead maintainer of SeaweedFS, an open‑source distributed object store and file system. At Roblox he focuses on building secure, high‑performance storage systems. At Uber, he built ML infrastructure for risk, created a graph database, and developed streaming feature computation framework. At Facebook, he worked on optimizing exabyte‑scale data to improve performance and locality."

Register for CozySummit here: https://community.cncf.io/events/details/cncf-virtual-project-events-hosted-by-cncf-presents-cozysummit-virtual-2025

This event will showcase how Cozystack empowers teams to build their own full-featured private clouds or AWS-alternative public clouds on owned or leased hardware. Learn how Cozystack reduces public cloud dependency, ensures data control, and enables digital sovereignty.

Share with your friends and colleagues — and join us live! 🚀

💪 We’re excited to introduce the talk "Cozystack Storage Deep Dive", by Moritz Wanzenböck (LINBIT) at CozySummit Virtual 2025.

CozySummit will take place online on December 3, 2025. The session starts at 18:40 CET (11:40 AM CT).

What this talk is about: "This session will offer a deep dive into the storage infrastructure of Cozystack. A core component of any private cloud, the storage layer needs to ensure availability while not compromising on the performance offered by the hardware. The session will focus on the open-source technologies that power the storage infrastructure: LINSTOR and DRBD. After a short theoretical introduction, we will focus on demonstrating the Cozystack storage layer in action: creating replicated volumes, seeing it deal with node failures and checking out how it integrates with the Virtualization and Backup solutions. Speaker: Moritz Wanzenböck LINBIT, Kubernetes Integration Engineer Company: LINBIT I am interested in the inner workings of cloud infrastructure and automation. After years of working with storage solutions as a user, I switched sides in 2020 to work on software defined storage solutions at LINBIT. I am a maintainer of the Piraeus project, always on the lookout to automate and containerize more features."

Register for CozySummit here: https://community.cncf.io/events/details/cncf-virtual-project-events-hosted-by-cncf-presents-cozysummit-virtual-2025

This event will showcase how Cozystack empowers teams to build their own full-featured private clouds or AWS-alternative public clouds on owned or leased hardware. Learn how Cozystack reduces public cloud dependency, ensures data control, and enables digital sovereignty.

Share with your friends and colleagues — and join us live! 🚀

💪 We’re excited to introduce the talk "From AWS EC2 to Cozystack: A Beginner’s Roadmap to Cloud Independence", by Kirti Goyal at CozySummit Virtual 2025.

CozySummit will take place online on December 3, 2025. The session starts at 17:55 CET (10:55 AM CT).

What this talk is about: "I started my cloud journey like many beginners: with AWS. It was exciting at first, but very quickly I realized how dependent I had become on a single provider and how costly and complex it could get. That made me curious about alternatives. In this talk, I’ll share my perspective as a newcomer exploring Cozystack, an open-source way to build your own private cloud. I’ll explain how I compared my “AWS-first” mindset to what Cozystack offers, what I learned along the way, and why platforms like this matter for digital sovereignty and avoiding lock-in. Speaker: Kirti Goyal Cloud Native & Open Source Contributor Kirti Goyal is an open source contributor with the CNCF community, focusing on Meshery. She is passionate about simplifying cloud-native technologies and creating smoother pathways for newcomers to start contributing. Through her work, Kirti advocates for visual, collaborative approaches to infrastructure management and encourages others especially students and early-career engineers to find their place in open source."

Register for CozySummit here: https://community.cncf.io/events/details/cncf-virtual-project-events-hosted-by-cncf-presents-cozysummit-virtual-2025

This event will showcase how Cozystack empowers teams to build their own full-featured private clouds or AWS-alternative public clouds on owned or leased hardware. Learn how Cozystack reduces public cloud dependency, ensures data control, and enables digital sovereignty.

Share with your friends and colleagues — and join us live! 🚀

🎥 Cozystack community meeting 2025-12-11: Flux-AIO, Application Versions, Backups, Coroot, Talm TUI

https://youtu.be/TBvb-t1Ps8U

Cozystack is a free PaaS and framework for building clouds | CNCF Sandbox Project

Agenda and notes

- Flux-AIO
- Application Versions
- Backups https://github.com/cozystack/cozystack/issues/1713, https://github.com/cozystack/cozystack/blob/main/api/backups/v1alpha1/DESIGN.md
- Talm TUI
- Coroot introduction and consideration to integrate with Cozystack

Open Floor:
- Cozystack-operator design considerations https://fluxcd.control-plane.io/operator/resourceset

Join the community:
Telegram group t.me/cozystack
Slack group (Get invite at https://slack.kubernetes.io)

Cozystack resources:
https://cozystack.io
https://cozystack.io/docs/get-started
https://cozystack.io/blog
https://github.com/aenix-io/cozystack

Ænix resources
https://aenix.io
https://news.1rj.ru/str/aenix_io
https://news.1rj.ru/str/aenix_community

🎥 Talks from CozySummit Virtual are now live!

Our first CozySummit, hosted together with the CNCF, brought engineers from all over the world to discuss real-world cloud infrastructure challenges.

6 talks covering:
• multi-AZ cloud design
• cloud independence
• extensibility at scale
• modern storage for Kubernetes

▶️ Watch the playlist:
https://www.youtube.com/watch?v=Y6JscJoK5JA&list=PLj6h78yzYM2NZ1_Y9LVDhjtlcl3g5tKiY

👉 Join the community: https://news.1rj.ru/str/cozystack
👉 Learn more: https://cozystack.io

#Cozystack #CNCF #Kubernetes #CloudNative #OpenSource #PrivateCloud #DevOps

📎📎 Cozystack v0.38: VPC networking, VM console & faster API

This release introduces Virtual Private Cloud (VPC) support, enabling advanced networking capabilities for tenant applications. We've also added VNC console support in the dashboard, made Kubernetes worker versions configurable, and delivered numerous improvements and fixes across the platform.

🗜 Virtual Private Cloud (VPC) Networking
Cozystack v0.38.0 introduces Virtual Private Cloud (VPC) support, enabling platform administrators to create isolated network segments for tenant applications. VPCs provide network isolation and allow fine-grained control over network topology, subnets, and routing. Each VPC can contain multiple subnets, and administrators can configure subnet details including IP ranges, gateway settings, and DNS configuration.

The VPC feature integrates seamlessly with the Cozystack dashboard, allowing users to view and manage VPCs and their subnets through an intuitive interface. Subnet details are exposed in the dashboard as tables, making it easy to understand network configuration at a glance. VPC configuration is stored in ConfigMaps with predictable naming, ensuring reliable access to subnet information.

This feature is particularly valuable for multi-tenant environments where network isolation is critical, and for applications that require specific network configurations or routing rules.

🥁 VNC Console for Virtual Machines
The Cozystack dashboard now includes a built-in VNC console for virtual machines, enabling users to access VM console directly from the web interface without requiring external tools. This feature provides immediate access to virtual machine consoles for troubleshooting, configuration, and maintenance tasks. The VNC console integration streamlines VM management workflows and improves the user experience by keeping all VM operations within the Cozystack dashboard.

🪑Additional Repositories
- Introduce boot/install mode: Introduced boot/install mode in boot-to-talos tool.
Handle valuesFiles from cozypkg.cozystack.io/values-files annotation: Added support for handling valuesFiles from annotation in cozypkg.

📚 Docs & ecosystem updates
- New and updated docs for VPC networking and its configuration.
- System resource planning recommendations and storage updates.
- Improved OpenAPI UI docs, updated managed apps reference, naming conventions, LINSTOR and golden image guides, and other quality-of-life documentation improvements.

All changes & improvements: v0.38.0, v0.38.1, v0.38.2, v0.38.3, v0.38.4

Huge thanks to everyone who contributed to the 0.38 line:
@IvanHunters, @insignia96, @kvaps, @lllamnyp, @nbykov0, @scooby87

Special shout-out to our first-time contributor:
@tabu-a — welcome aboard! 🚀

Join the community
Telegram group
Slack group (Get invite at https://slack.kubernetes.io)