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Amplify your data center with cloud transformation

Cozystack developers: @cozystack

Contact: @kvaps @gecube @tym83
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📌📌📌 Cozystack v0.37: Brand New UI

In the new release, the Cozystack developer community unveiled a completely new UI based on the openapi-ui project. The maintainers fully rewrote the platform’s frontend, delivered numerous improvements, and fixed issues that existed in the previous Kubeapps-based UI. Let’s see what’s inside.

Cluster selector
A cluster selector has been added. Today, the dashboard operates in single-cluster mode (one dashboard per cluster). The same UI will power multi-cluster mode in future releases.

Namespace navigation (Tenant Namespace)
On the cluster view, you now see all namespaces you’re ennoscriptd to. The list is built via the Kubernetes API aggregation layer (tenant namespace), so only namespaces you have access to are shown.

Application categories
Existing applications are split into three categories. In upcoming releases, categories will be optional — you’ll be able to deploy only selected groups and skip others.

Richer resource pages
Every resource page now includes:
- a resource table and basic metadata,
- Conditions,
- Workloads (what’s currently running),
- Ingresses, Services, Secrets,
- the resource YAML.

OpenAPI-driven configurators
Resource creation uses forms auto-generated from the Kubernetes OpenAPI spec. Field definitions and validation come directly from the spec — no YAML comments needed.

Spec generation from Helm
New application specs are generated from Helm charts using the cozy-values generator. Fields you add in the form are reflected live in the resulting YAML.

Tenant administration separated
Tenant management modules have moved to a dedicated Administration section: create sub-tenants and deploy tenant-specific modules/apps there (subject to your role and permissions).

VM features groundwork
A VNC console tab for virtual machines is planned and will appear as an additional tab. Certain resource types (e.g., KubeVirt VMs) will gain specialized tabs/fields.

New Components Versions
Flux Operator 0.29.0
Cilium v1.17.8
Velero v1.17.0
openapi-ui v1.0.3
LINSTOR v1.32.3
SeaweedFS v3.99

All changes: v0.37.0, v0.37.1, v0.37.2, v0.37.3, v0.37.4

Join the community
Telegram group
Slack group (Get invite at https://slack.kubernetes.io)
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🦾🦾 Cozystack and Ænix at KubeCon’25, Atlanta: Lightning Talk + CNCF Project Pavilion

Who will be on behalf of our team: Andrei Kvapil, our CEO and Cozystack maintainer.

1. Lightning Talk: November 10, 2:46pm - 2:51pm
Building C | Level 3 | Georgia Ballroom 2
Cozystack: Build Your Own Open Source AWS On Bare Metal - Andrei Kvapil, Maintainer
Kubernetes and cloud infrastructure are the de facto standard. Many teams default to public clouds (AWS/GCP/Azure)—convenient, but not for everyone. Vendor lock-in, data control, and compliance push workloads to bare metal. i'll explain in a five minutes how Cozystack enables businesses to build open-source bare-metal infrastructure with cloud-like ease and zero vendor lock-in, while empowering service and hosting providers to compete with hyperscalers.

2. CNCF Project Pavilion: November, 11, 10:30 AM - 3:00 PM
Kiosk: 14B

Let's meet in Atlanta, November 10-13 and talk about your clouds and cloud platforms!

P.S. To assign a meeting with Andrei write to @tym83.
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🤗🤗 On December 3, we’re meeting at CozySummit Virtual!

Meet our speakers — real engineers, real adopters, and maintainers sharing hands-on experience with Cozystack.

CozySummit is the best way to discover how Cozystack helps teams tackle infrastructure challenges, what capabilities it offers, which use cases it solves, and what technologies power the platform.

Organized by CNCF and the Cozystack community.

🦾 Register now, it's free
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🏴‍☠️ We’re trying to sneak our way onto the Pavilion Stage at KubeCon NA 2025 😎 — this time with an extended talk about Cozystack and how to build clouds the open-source way.

Your votes can help us share Cozystack with the whole world 🌍

👉 Vote here for 'Cozystack: Is Kubernetes Ready to Provide a Reliable Alternative to Traditional Virtualization Platforms?': https://github.com/cncf/maintainer-summit/discussions/categories/pavilion-stage-kubecon-na-2025
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💪 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! 🚀
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💪 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! 🚀
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💪 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! 🚀
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🎥 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
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💪 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! 🚀
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💪 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! 🚀
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💪 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! 🚀
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