Blog

Articles, deep dives, news, and field notes from the Ænix team — Cozystack, Kubernetes, sovereign cloud, DORA / NIS2, AI infrastructure.

Field notes from the team building Cozystack and the Ænix cloud platform products. Filter by type of material (article, news, tutorial, case study, opinion, announcement) or by topic (Cozystack, Kubernetes, VMware, OpenStack, DORA, NIS2, sovereignty, AI/ML, GPU, KubeVirt, repatriation, …).

Type:

Topic:

Article Oct 11, 2026

Kubernetes as the Linux kernel: a toolkit for building your own Kubernetes distributions, and a package manager for any cluster

kuberoot builds Kubernetes distributions the way Buildroot builds embedded Linux: own kernel, nodes managed through kubectl, eight distributions, kubepkg.

KubernetesOpen SourceTalosPlatform EngineeringKubeVirtAI/ML

Announcement Oct 9, 2026

Cozystack joins the CNCF Kubernetes AI Conformance program

Cozystack v1.6.1 was accepted into CNCF Kubernetes AI Conformance for Kubernetes v1.35 with all 12 requirements met. What was tested and what it means.

CozystackCNCFAI and MLGPUKubernetes

Announcement Oct 9, 2026

AENIX s.r.o. is ISO/IEC 27001:2022 certified

AENIX s.r.o. holds an ISO/IEC 27001:2022 certificate for its information security management system. What it covers, what it does not, and how to verify it.

ComplianceFinancial ServicesDORANIS2Sovereignty

Article Oct 8, 2026

Paleocomputing, part 2: Kubernetes in Oberon, Wirth's radio instead of a network, a cluster in your browser, and what forgotten technology says about tomorrow's infrastructure

Kube: a Kubernetes control plane in Oberon, on Niklaus Wirth's own machines talking over radio. Six browser labs, the design lessons, and how to run it.

KubernetesCozystackKubeVirtOpen SourceRetrocomputingDistributed Systems

Article Sep 30, 2026

Paleocomputing, part 1: Wirth's processor, Project Oberon, a new architecture in QEMU and KubeVirt, and running it in Cozystack and K8s

Running Niklaus Wirth's RISC5 processor in a browser, in QEMU and in Kubernetes, and measuring what array-bounds checking really costs on a fully open system.

CozystackKubeVirtKubernetesOpen SourceCHERIRetrocomputing

Article Aug 10, 2026

What dozens of AI agents taught me: how I wrote the Blockstor storage system as an experiment

Andrei Kvapil on building Blockstor as a clean-room, Kubernetes-native block storage orchestrator by driving up to 60 AI agents with TDD and hard exit gates.

KubernetesLINSTORStorageAI and MLCozystackOpen Source

Article Jul 24, 2026

Focus on today: how we built aeman, a daily planning board for engineers on top of GitHub Projects

How Ænix built aeman, an open-source daily planning board for engineers that uses GitHub Projects v2 as its only storage and a Kubernetes-style watch API.

Platform EngineeringDeveloper ToolsOpen SourceKubernetesCozystack

Announcement Jul 22, 2026

Cozystack 1.6: Talos tenant workers, tenant SSO, SecurityGroups, and hierarchical quotas

Cozystack v1.6.0 moves tenant workers to Talos via Cluster API and adds tenant OIDC, a SecurityGroup firewall API, hierarchical quotas and etcd v1alpha2.

CozystackKubernetesTalosMulti-tenancyKubeVirtPlatform Engineering

Announcement Jun 22, 2026

Cozystack 1.5: Gateway API, default backups, Flux sharding, and TLS for managed services

Cozystack v1.5.0 adds opt-in Gateway API via Cilium, a default BackupClass, Flux v2.8 with sharding, TLS for managed databases, and GPU passthrough.

CozystackKubernetesCiliumKubeVirtGPUPlatform Engineering

Article May 31, 2026

White-label cloud playbook — for MSPs and resellers in 2026

How MSPs and resellers launch a cloud under their own brand: who owns what, branding, billing through WHMCS or your own system, and the support split.

CozystackMulti-tenancyHostingObservability

Article May 30, 2026

When Cozystack fits SMB and mid-market — and when it doesn't

Most small companies do not need Cozystack. An honest test for when it fits, what to run instead, and when a regional provider running it is the better buy.

DORAVMwareProxmoxKubernetesCozystackSovereignty

Tutorial May 30, 2026

VMware replacement after Broadcom: a guide for service providers, banks, and sovereign clouds in 2026

What changed under Broadcom, a component-by-component VMware-to-Cozystack mapping, how the migration actually runs, and the FAQ engineers ask first.

VMwareKubernetesCozystackSovereigntyAI and MLGPU

Article May 29, 2026

VMware migration tools and strategy in 2026 — what works, what fails

Three VMware migration paths, the tooling for KubeVirt-based migration, where migrations stumble, and realistic cost ranges.

VMwareNutanixOpenShiftKubernetesCozystackKubeVirt

Article May 29, 2026

Transport and logistics cloud architecture — NIS2, AI, edge in 2026

Transport cloud architecture under NIS2: who builds it, how terminals and depots keep working when the link drops, and where the TOS and AI inference run.

NIS2CozystackSovereigntyAI and MLGPU

Article May 28, 2026

Telco cloud modernization in 2026 — from legacy NFV to Kubernetes-native edge

How tier-1 and tier-2 telecom operators modernize legacy NFV environments into Kubernetes-native sovereign cloud platforms — a guide for architects.

TelcoSovereigntyMulti-tenancyCozystackCloudAI and ML

Article May 28, 2026

SRE as a product discipline — what an SRE engagement actually changes

Embed SRE in product teams, centralize it as a function, or buy an engagement — what each delivers and how to measure it.

DevOpsPlatform EngineeringObservabilityCozystack

Announcement May 28, 2026

Cozystack 1.4: New Dashboard UI, Persistent Tenant Workers, Backup Strategies, and Fractional GPU Sharing

Cozystack v1.4.0 is now available. The release was published on May 19, 2026, and rolls up every fix shipped in the v1.3.1 to v1.3.3 patch line.

CozystackKubernetesKubeVirtGPUMulti-tenancyTalos

Article May 27, 2026

Seven decisions when designing sovereign AI architecture

Seven architecture decisions behind a sovereign AI stack, how they interlock, and the combinations that recur in real deployments.

DORANIS2SovereigntyAI and MLMulti-tenancyFinancial Services

Article May 26, 2026

Smart grid platform architecture — IT/OT convergence, edge, and AI on customer-controlled infrastructure

A smart-grid architectural reference for energy operators: IT/OT boundaries that work, NIS2 controls, AI on grid-operational data, and legacy migration.

NIS2AI and MLGPUCompliance

Article May 26, 2026

Reverse cloud migration — a practical playbook for leaving public cloud in 2026

A five-step cloud repatriation playbook, the pitfalls that recur, when not to repatriate, and how long a realistic move actually takes.

DORANIS2SovereigntyCloud RepatriationAI and MLGPU

Article May 25, 2026

Public-sector sovereign cloud — from procurement framework to running platform

How public-sector procurement leads and IT directors turn sovereignty mandates (EUCS, SecNumCloud, BSI C5, NIS2) into a running, auditable cloud platform.

Public SectorSovereigntyComplianceNIS2Cozystack

Article May 25, 2026

Public Cloud Platform at operator scale — what it takes to launch a national sovereign cloud

What an operator-scale sovereign cloud build on Ænix Public Cloud Platform covers for telcos, banks and national operators: phases, timeline, team, pitfalls.

CozystackMulti-tenancySovereigntyCloudPlatform Engineering

Article May 24, 2026

Proxmox vs VMware vs Cozystack — a 2026 comparison for the post-Broadcom era

Proxmox VE, VMware after Broadcom, and Cozystack compared by architecture and use case, with a feature matrix and the realistic migration paths.

VMwareProxmoxKubernetesCozystackSovereigntyMulti-tenancy

Tutorial May 23, 2026

Proxmox to Cozystack — when single-tenant outgrows itself

When does Proxmox VE outgrow single-tenant? A Proxmox-to-Cozystack migration guide for MSPs and growing teams hitting multi-tenancy and scale limits.

ProxmoxCozystackMigrationMulti-tenancyHosting

Tutorial May 23, 2026

Private LLM deployment — a practical guide to on-premise AI infrastructure in 2026

The six layers of a real private LLM deployment — hardware, platform, serving, model, application, operations — with the pitfalls at each one.

DORAKubernetesSovereigntyAI and MLGPUMulti-tenancy

Article May 22, 2026

Private cloud providers and platforms — a 2026 comparison

Open-source platforms, commercial stacks, sovereign hyperscaler regions and regional providers compared — plus the migration paths between them.

VMwareOpenStackProxmoxOpenShiftKubernetesCozystack

Article May 22, 2026

Private cloud architecture in 2026 — design, components, and implementation patterns

What private cloud means in 2026: the architectural layers, three patterns that work, capacity sizing, and the mistakes that recur in design reviews.

OpenStackKubernetesKubeVirtSovereigntyMulti-tenancyFinancial Services

Tutorial May 21, 2026

Platform engineering vs DevOps vs SRE — a 2026 terminology guide

Where platform engineering, DevOps and SRE overlap and where they do not, what each actually builds, and the metrics that separate them.

DevOpsPlatform EngineeringObservability

Article May 21, 2026

OpenStack vs Cozystack — modernization options for OpenStack operators in 2026

Where OpenStack still wins, where the operational pressure comes from, and the modernization paths available to OpenStack-trained teams.

OpenStackKubernetesCozystackSovereigntyMigration

Tutorial May 20, 2026

OpenStack migration — a cohort-based playbook for moving to Cozystack in 2026

Cohort-based playbook for migrating production OpenStack to Cozystack: component mapping, image conversion, networking redesign, handover, and timeline.

OpenStackCozystackMigrationMulti-tenancyKubernetes

Article May 19, 2026

OpenShift vs Cozystack — comparison for KubeVirt-based platform decisions

Two KubeVirt-based platforms compared: shared foundations, where they genuinely differ, when OpenShift wins, and what migration between them involves.

OpenShiftKubernetesCozystackKubeVirtCiliumLINSTOR

Article May 19, 2026

Nutanix vs Cozystack vs VMware — choosing your virtualization platform in 2026

Nutanix HCI with AHV, VMware after Broadcom and Cozystack compared: architecture, where each one wins, and the migration economics between them.

VMwareNutanixKubernetesCozystackKubeVirtCilium

Article May 18, 2026

NIS2 requirements for cloud infrastructure — a checklist for in-scope entities in 2026

NIS2 Articles 21, 23, 28 and 12 mapped to concrete cloud architecture controls, with a working checklist and the architectural failures that recur.

NIS2Financial ServicesCompliance

Article May 18, 2026

MSP cloud platform modernization — branded cloud as managed-service offering

How an MSP moves from managing each customer's infrastructure to running one branded multi-tenant cloud as a managed service: architecture, migration, limits.

CozystackMulti-tenancyHostingObservability

Article May 17, 2026

Launch a customer-facing cloud product — playbook for hosting providers, telcos, and regional operators

The six layers of a customer-facing cloud product, the architectural decisions specific to public cloud, and where launches stumble commercially.

VMwareKubernetesSovereigntyAI and MLMulti-tenancyHosting

Article May 17, 2026

Industry 4.0 platform — cloud + edge architecture for manufacturing in 2026

Industry 4.0 cloud and edge in 2026: who builds and runs it, where it sits in the Purdue model, GPU inspection, industrial IP protection and NIS2.

NIS2CozystackSovereigntyAI and MLCompliance

Article May 16, 2026

Production Kubernetes cluster setup — architecture decisions, sizing, and operations in 2026

Ten architecture decisions behind a production Kubernetes cluster — distribution, tenancy, CNI, storage, GitOps, DR — and the readiness failures that recur.

OpenShiftKubernetesCozystackKubeVirtTalosSovereignty

Article May 15, 2026

When Public Cloud Platform pays back for hosting providers

Unit economics of Ænix Public Cloud Platform for hosting providers: ARPU, infrastructure cost per tenant, platform-team capacity, payback, and where it breaks.

HostingCozystackMulti-tenancyPlatform EngineeringCloud

Article May 15, 2026

K-12 school district cloud infrastructure — when sovereignty matters more than convenience

When a school district or education authority needs its own cloud, who should build and run it, and the tenant model that fits districts, schools and classes.

KubernetesCozystackSovereigntyAI and MLMulti-tenancyCompliance

Article May 14, 2026

Internal developer portal vs internal developer platform — and Backstage's place in 2026

Portal and platform are not the same thing. Where Backstage actually fits, what the alternatives are, and how to decide whether you need a portal at all.

BackstageKubernetesPlatform EngineeringComplianceObservability

Article May 14, 2026

Internal developer platform examples — 6 architectural patterns without Backstage lock-in

Six internal developer platform patterns from production, the tools that show up across them, and how to pick one without defaulting to Backstage.

BackstageKubernetesKubeVirtSovereigntyMulti-tenancyPlatform Engineering

Tutorial May 13, 2026

Hybrid cloud architecture patterns 2026 — what works, what fails, and how to choose

Five hybrid cloud patterns that work in production, what makes them work, the failure modes to avoid, and when hybrid is the wrong answer.

AI and MLObservability

Article May 13, 2026

Developer self-service — the cost of developer drag, and what an internal developer platform actually pays back

Time-to-environment cost, golden-path coverage, platform-team sizing, and the economic case for an IDP that pays back inside 12 months at 200+ engineers.

Platform EngineeringCozystackDevOpsMulti-tenancy

Announcement May 13, 2026

Ænix Billing — per-minute usage-based billing for Managed PostgreSQL, Redis, Kafka and ClickHouse on Cozystack

Ænix Billing brings AWS-style per-minute, usage-based billing to managed Postgres, Redis, Kafka and ClickHouse on Cozystack via a Kubernetes-native API.

CozystackKubernetesMulti-tenancyPlatform EngineeringBilling

Article May 12, 2026

Hosting provider platform modernization — from VPS to cloud product

How a hosting provider moves from VPS to a cloud product: the platform, the service catalogue, billing and operations, and the order to change them in.

KubernetesCozystackSovereigntyAI and MLGPUMulti-tenancy

Article May 11, 2026

Financial-services cloud platforms — what TLPT readiness actually looks like in 2026

What TLPT readiness under DORA actually looks like in 2026 for platform engineers at banks, insurers, and payment institutions facing a real supervisor cycle.

Financial ServicesDORAComplianceSovereigntyCozystack

Article May 11, 2026

Enterprise platform engineering — org design, headcount, and the failure modes at 1,000+ engineers

Org design, headcount math, governance, and recurring failure modes for building a platform-engineering function at 1,000+-engineer organisations.

Platform EngineeringCozystackMulti-tenancyDevOps

Article May 10, 2026

Private Cloud Platform for regulated cloud — DORA and NIS2 obligations mapped to running architecture

Mapping DORA ICT-risk and third-party obligations and the NIS2 Article 21(2) measures onto a defensible cloud architecture for regulated enterprises.

DORAFinancial ServicesComplianceSovereigntyMulti-tenancyCozystack

Article May 10, 2026

A DORA compliance checklist for cloud infrastructure — framework, controls, and what to demonstrate in 2026

A working DORA checklist for cloud architecture: what Articles 21 and 28 require, where current setups fall short, and how to assess where you stand.

DORAFinancial ServicesCompliance

Article May 9, 2026

DevOps best practices for 2026 — beyond the slide-deck era

The eight DevOps practices that compound in 2026, what is still contested, the failure modes that recur, and how to place your team on the maturity curve.

KubernetesGitOpsAI and MLDevOpsObservability

Article May 9, 2026

Developer experience platforms — building self-service paths that actually get used

The ten golden paths most worth building, the five characteristics that make them work, and the architectural decisions that shape self-service.

BackstageKubernetes

Tutorial May 8, 2026

Data residency requirements in 2026 — a practical guide for cloud architecture

What data residency actually requires at control level, why most cloud setups fail on inspection, and the architectural patterns that hold up.

DORANIS2SovereigntyFinancial ServicesComplianceBackup and DR

Article May 7, 2026

Cozystack vs VMware — deep-dive comparison for platform engineers

Cozystack against VMware layer by layer — compute, storage, network, multi-tenancy — with the operational implications and migration patterns for each.

VMwareKubernetesCozystackKubeVirtCiliumLINSTOR

Article May 7, 2026

Cozystack — what it is, architecture, and how it fits in 2026

What Cozystack is technically, the architectural choices behind it, how it compares to OpenStack and OpenShift, and when it is the wrong answer.

OpenStackOpenShiftKubernetesCozystackKubeVirtTalos

Article May 6, 2026

Vendor-neutral cloud strategy — what an honest cloud advisory engagement looks like in 2026

What a vendor-neutral cloud strategy engagement actually delivers, and how it differs from Big-4 cloud advisory and hyperscaler-aligned consultancies.

CloudPlatform EngineeringSovereigntyCompliance

Tutorial May 6, 2026

CloudStack migration to Cozystack — the modernization path for established service providers

How service providers can modernize Apache CloudStack to Cozystack as a Kubernetes-native target, with architecture mapping, migration phases, and trade-offs.

CloudStackCozystackMigrationHostingMulti-tenancy

Article May 5, 2026

Honest TCO modelling for cloud repatriation — what numbers to actually compare

Why most cloud repatriation TCO models are wrong: the cost lines both sides hide, the assumptions to stress-test, and why the decision is made per workload.

Cloud RepatriationFinancial ServicesPlatform EngineeringBackup and DRObservability

Article May 4, 2026

Cloud-native research and teaching infrastructure — what universities actually need in 2026

Architecture patterns for university research and teaching infrastructure: the three missions, GPU scheduling for labs, and the pitfalls that recur.

KubernetesAI and MLGPUMulti-tenancy

Article May 4, 2026

Cloud Readiness Assessment — what 14 days actually cover (2026 methodology)

A 14-day platform readiness assessment run as four parallel workstreams: how the days sequence, what the report contains, and pitfalls we learned to avoid.

DORANIS2NutanixKubernetesSovereigntyCloud Repatriation

Tutorial May 3, 2026

How to build a sovereign cloud — playbook for EU and Central Asia in 2026

What sovereignty actually means in practice, the frameworks that define it, and the architectural patterns for a sovereign cloud in the EU and Central Asia.

DORANIS2SovereigntyFinancial ServicesBackup and DRObservability

Tutorial May 3, 2026

Cloud cost optimization strategies in 2026 — a practical guide for engineering and finance

Eight cloud cost optimization strategies, from commitment-realization gaps to Kubernetes right-sizing — and the point where configurational tuning stops paying.

KubernetesCloud RepatriationFinancial ServicesCost Optimization

Article May 2, 2026

Build your own private cloud — a 90-day playbook for the platform-team-led approach

A day-0 to day-90 plan for standing up a private cloud: what gets built each month, what you deliberately skip, and where teams routinely stumble.

DORANIS2VMwareCozystackCiliumTalos

Article May 2, 2026

Best VMware alternatives in 2026 — detailed comparison and decision framework

A decision framework and ranked comparison of the credible VMware alternatives in 2026 — what each is, who it fits, and what migration costs.

VMwareOpenStackOpenShiftKubernetesCozystackSovereignty

Article May 1, 2026

AI Platform — when sustained-inference economics beat hyperscaler GPU

GPU economics for sustained inference on the Ænix AI Platform: multi-tenant GPU scheduling, fractional sharing, and when dedicated AI infrastructure pays back.

AI and MLGPUCozystackSovereigntyMulti-tenancyKubeVirt

Announcement Apr 27, 2026

Cozystack 1.3: Storage-Aware Scheduling, LINSTOR GUI, and VM Default Images

Cozystack v1.3.0 is now available. The release also rolls up every fix shipped in the v1.2.1 → v1.2.4 patch line.

KubernetesCozystackKubeVirtCiliumLINSTORGPU

Announcement Apr 8, 2026

Cozystack Launches an OSS Health Section on Its Website

We have launched a new OSS health section on the Cozystack website, with project stats refreshed automatically every month.

Open SourceDevOpsKubernetesCNCFPlatform EngineeringCozystack

Article Apr 7, 2026

RWX (ReadWriteMany) volumes in Cozystack — native shared storage for your workloads

Since Cozystack v1.0, ReadWriteMany (RWX) volumes work out of the box: several pods and VMs can mount the same volume at once, without external NFS.

Platform EngineeringCNCFStorageDevOpsKubernetesCozystack

News Apr 6, 2026

CozySummit Virtual 2026: The Program Is Set

The full talk lineup for CozySummit Virtual 2026 is published: sessions from Cozystack maintainers and adopters on building clouds with Kubernetes.

Open SourcePlatform EngineeringCNCFDevOpsKubernetes

Announcement Apr 3, 2026

Cozystack 1.2: OpenSearch, VPC Peering, and Smarter Tenant Scheduling

The Cozystack 1.2 release line is now available. v1.2.0 was published on March 27, 2026, and v1.2.1 followed on March 31, 2026.

CozystackLINSTORMulti-tenancyObservability

Article Apr 1, 2026

Game Servers on Cozystack: No April Fools’ Joke

Why the Cozystack team targets game servers: bare metal instead of noisy neighbours, external apps as a packaging mechanism and Minecraft with cozylex.

Open SourceKubernetesCNCFCloudGame ServersCozystack

Announcement Mar 16, 2026

Cozystack v1.0 and v1.1: Package-Based Architecture, Cozystack Operator, Velero Strategy Controller, MongoDB and OpenBAO

Cozystack v1.0 and v1.1 replace bash scripts with an operator and FluxCD-based packages, add Velero backups, MongoDB and OpenBAO. Breaking changes inside.

KubernetesCozystackKubeVirtCiliumGPUHosting

News Mar 11, 2026

Cozystack & Ænix at KubeCon Europe

Meet Cozystack and Ænix at KubeCon Europe in Amsterdam: CNCF Project Pavilion, kiosk P-18A, Wednesday 25 March, 10:00–13:30.

KubernetesCozystackCNCF

Tutorial Mar 4, 2026

Deploy Cozystack on any Kubernetes with Ansible

Install Cozystack on an existing Kubernetes cluster with the ansible-cozystack collection, for teams that cannot run the full stack on Talos Linux.

DevOpsOpen SourceAnsibleKubernetesPlatform EngineeringCozystack

News Feb 27, 2026

Join Ænix at CloudFest 2026

Meet the Ænix team at CloudFest 2026, booth Z22: talk to us about building a cloud platform for hosting providers with Cozystack.

CozystackHosting

Tutorial Feb 26, 2026

Platformize It! Part 2: Extending Kubernetes and the API Aggregation Layer

Part 2 of Platformize It: how to extend Kubernetes with the API Aggregation Layer to serve managed applications through one API and UI.

DevOpsKubernetesOpen SourcePlatform EngineeringCloud

Tutorial Feb 23, 2026

Cozystack Is No Longer Tied to Talos: Deploy on Any Linux Distribution

Cozystack can now be installed on an existing Kubernetes cluster on any Linux distribution. When to choose Generic Kubernetes over Talos, and how to try it.

KubernetesCozystackKubeVirtCiliumTalosLINSTOR

News Feb 11, 2026

Invitation to CozySummit Virtual — May 26

Join the second CozySummit Virtual on May 26, the online conference for Cozystack developers and adopters. The call for proposals is open.

CozystackGitOpsCNCFPlatform EngineeringComplianceObservability

Article Feb 9, 2026

Platformize It! Part 1: Platform Approach, Core of a Modern Platform, and APIs

Andrei Kvapil on the platform approach behind Cozystack: why Kubernetes is the base and how Helm, operators and one API work together.

DevOpsKubernetesOpen SourcePlatform EngineeringCloud

Announcement Jan 23, 2026

Cozystack v0.41.0: Managed MongoDB

Cozystack v0.41.0 adds MongoDB as a managed application next to PostgreSQL, MySQL and Redis, plus improvements, fixes and dependency updates.

KubernetesCozystackTalosLINSTORObservabilityetcd

Article Jan 20, 2026

KubeVirt: The Truth About Virtualization Overhead In Kubernetes

How much overhead do KubeVirt virtual machines add in Kubernetes? An analysis of compute, storage and networking, and how to avoid the overhead.

KubeVirtDevOpsKubernetesCNCF

Announcement Jan 19, 2026

Cozystack v0.40 — Enhanced Storage & Platform Architecture

Cozystack v0.40 adds a LINSTOR scheduler for storage-aware pod placement, SeaweedFS traffic locality, valuesFrom configuration and LINSTOR auto-diskful.

KubernetesCozystackLINSTORObservabilityStorageetcd

Announcement Dec 17, 2025

Cozystack v0.38: VPC Networking, VM Console and a Faster API

Cozystack v0.38 adds Virtual Private Cloud networking for tenant applications, a VNC console for virtual machines, additional repositories and a faster API.

KubernetesCozystackTalosLINSTORMulti-tenancy

Announcement Nov 4, 2025

Cozystack v0.37: Brand New UI

Cozystack v0.37 replaces the dashboard with a new UI built on the openapi-ui project, generated from the platform API. What changed for users.

KubernetesCozystackKubeVirtCiliumMulti-tenancyCNCF

News Oct 14, 2025

The CozySummit 2025 Virtual Lineup Is Out

The schedule for CozySummit 2025 Virtual is published: an online conference for Cozystack developers and users, hosted together with the CNCF.

ProxmoxCozystackCNCFStorage

News Oct 8, 2025

Cozystack Applies for CNCF Incubation

Cozystack has submitted its application to move from CNCF Sandbox to the Incubating level. Follow the application and support it on GitHub.

CozystackCNCF

Announcement Oct 1, 2025

Cozystack v0.36: Server-side Encryption for S3, Kube-OVN Cluster Health Monitor and REST API Documentation

The new version of Cozystack focuses on the stability, observability, and flexible configuration of managed applications.

CozystackTalosMulti-tenancyObservabilityStorage

Article Sep 10, 2025

Protofire Experience Operating Kubernetes with Cozystack

Protofire moved from nearly a hundred AWS accounts on ECS to two Kubernetes clusters on Cozystack, and expects a 7–10x reduction in infrastructure spend.

KubernetesCozystackTalosFinancial ServicesCNCFMigration

News Sep 5, 2025

New CNCF Webinar: Building Your Own Cloud Platform with Open Source

Andrei Kvapil's CNCF webinar on building your own cloud platform from open-source components: architecture, API design and choosing the components.

CNCFMigration

News Sep 3, 2025

CNCF Webinar: One API to Rule Them All — Building a Unified Platform with Kubernetes Aggregation

CNCF webinar with Andrei Kvapil, Ænix CEO and Cozystack maintainer: building a unified platform API with the Kubernetes API Aggregation Layer.

KubernetesCozystackCNCFPlatform EngineeringObservabilityetcd

Announcement Aug 21, 2025

Cozystack v0.35: External Application Sources, Dedicated S3 Clusters and Hetzner RobotLB Support

Cozystack v0.35 adds external application sources for its modular architecture, dedicated S3 clusters with monitoring and Hetzner RobotLB support.

KubernetesCozystackKubeVirtAI and MLGPUMulti-tenancy

News Aug 14, 2025

Invitation to CozySummit Virtual — December 3

Join us on December 3 for CozySummit Virtual, the first conference for CozyStack developers and users.

KubernetesCozystackAI and MLCNCF

Announcement Aug 4, 2025

Cozystack v0.34: Kubernetes Version Selection, PVC Snapshots in Tenants, Windows and RouterOS on VMs

Cozystack v0.34: tenants choose their Kubernetes version and take PVC snapshots, VMs run Windows and RouterOS, and VPA now autoscales itself.

KubernetesCozystackKubeVirtCiliumTalosLINSTOR

Announcement Jul 9, 2025

Cozystack v0.31–0.33: Air Gap, Backup System, AI Workloads in Kubernetes and More

Cozystack v0.31 to v0.33 bring air-gapped installs, a new backup system, AI workloads in Kubernetes, ARM support, NFS and cozypkg as a Helm replacement.

KubernetesCozystackKubeVirtAI and MLGPUMulti-tenancy

Article Jun 18, 2025

Cozypkg: How We Simplified Local Development with Helm and Flux

Andrei Kvapil shows how Cozystack ships apps with Helm and Flux, why GitOps gets in the way of local development, and how the cozypkg tool solves it.

Open SourcePlatform Engineering

Announcement Jun 6, 2025

Cozystack became a CNCF Certified Kubernetes distribution

Cozystack is now a CNCF Certified Kubernetes distribution. Thanks to the community and to our friends at Hidora.

KubernetesDevOpsOpen SourceCNCFPlatform EngineeringCozystack

Article Jun 4, 2025

The Evolution of Virtualization Platforms: The Rise of Managed Services and the Edge of Local Providers

Andrei Kvapil traces the path from physical servers to VMs, containers and managed services, and shows how local providers can compete with hyperscalers.

Platform EngineeringKubernetesKubeVirt

News May 21, 2025

Cozystack Recognized in the CNCF Cloud Native AI Landscape

The Cloud Native Computing Foundation has added Cozystack to its Cloud Native AI (CNAI) Landscape as a platform for running AI workloads on Kubernetes.

KubernetesCozystackAI and MLGPUCNCFPlatform Engineering

Tutorial Apr 28, 2025

A Simple Way to Install Talos Linux on Any Machine, with Any Provider

Boot Talos Linux with kexec from any running Linux, pass networking via the kernel command line and install it to disk with talosctl or Talm.

CloudKubernetesOpen SourcePlatform Engineering

News Apr 18, 2025

Cozystack Now Offers GPU Passthrough for AI/ML Virtual Machines

Cozystack now passes GPUs directly through to KubeVirt virtual machines, so tenants can run AI, machine learning and other GPU workloads in their VMs.

KubernetesCozystackKubeVirtAI and MLGPUMulti-tenancy

Announcement Apr 11, 2025

Ænix Secures $300K Seed Investment from Prospective Technologies to Accelerate Open-Source Cloud Innovation and the Cozystack Platform

Ænix, the company that created the open-source Cozystack platform, announces a $300,000 seed investment from Prospective Technologies (April 2025).

CozystackSovereigntyAI and MLFinancial ServicesCNCFCompliance

Announcement Apr 10, 2025

Cozystack 0.24–0.29: PXE Machine Provisioning, Inter-Datacenter RTT Monitoring and Dedicated IP Addresses for VMs

Six Cozystack releases in six weeks: PXE machine provisioning, RTT monitoring between data centres, dedicated IP addresses for VMs and more.

KubernetesCozystackKubeVirtCiliumTalosLINSTOR

Announcement Mar 13, 2025

Cozystack Becomes a CNCF Sandbox Project

On 28 February 2025 the CNCF Technical Oversight Committee accepted Cozystack as a CNCF Sandbox project. What Cozystack is and what Sandbox means.

KubernetesOpen SourceCNCFPlatform EngineeringDevOpsCozystack

Announcement Jan 17, 2025

Cozystack v0.22: Telemetry, Patched Talos v1.9.1, and the New Workload and WorkloadMonitor Entities

Cozystack v0.22 adds Workload and WorkloadMonitor to show service health in the dashboard, opt-in telemetry, a patched Talos v1.9.1 and component updates.

KubernetesCozystackTalosObservabilityStorageetcd

Announcement Dec 28, 2024

Cozystack v0.21: New User Dashboard, Talos Linux Updates and More

Cozystack v0.21 moves the dashboard onto the Cozystack API instead of FluxCD resources, so users get granular access, and updates Talos Linux.

KubernetesCozystackTalosLINSTORMulti-tenancyObservability

Article Dec 27, 2024

The Inevitable Future of Kubernetes: Why the Orchestrator Should Follow the Path of the Linux Kernel

Tim Hockin asked for a complexity budget for Kubernetes. Timur Tukaev argues it should become like the Linux kernel, with platforms as distributions.

KubernetesTalos

Article Dec 12, 2024

How we built a dynamic Kubernetes API Server for the API Aggregation Layer in Cozystack

Andrei Kvapil explains how Cozystack runs its own extension API server on the Kubernetes API Aggregation Layer, and when that approach is worth it.

KubernetesDevOpsOpen SourceCozystack

Announcement Dec 12, 2024

Cozystack v0.20 Release: Terraform, Keycloak, and Stability & Security Improvements

This release focuses on enhancing stability while addressing a significant number of bugs and introducing new features.

KubernetesCozystackKubeVirtMulti-tenancyObservabilityTerraform

Announcement Dec 2, 2024

kubectl-node-shell plugin updated to v1.11.0

kubectl-node-shell v1.11.0 opens a shell on any cluster node through the Kubernetes API, with new namespace options, image pull secrets and volume mounts.

KubernetesDevOpsOpen SourceCloud

Announcement Nov 7, 2024

Cozystack v0.18: Public API Server, Metrics and Logs from Tenant Clusters

Cozystack v0.18 adds its own Kubernetes API server for granular user access, metrics and log collection from tenant clusters, and Talos Linux v1.8.2.

KubernetesCozystackTalosMulti-tenancyObservability

Announcement Oct 24, 2024

What’s New in Cozystack v0.17: Windows on VMs, VM Image Upload and a Web UI for S3 Buckets

This update mainly focuses on enhancing the platform’s virtualization features, while also introducing several other improvements.

KubernetesCozystackKubeVirtCiliumTalosLINSTOR

News Oct 4, 2024

Cozystack on Hacktoberfest: Become Part of the Global IT Event

Cozystack takes part in Hacktoberfest 2024. Pick an issue in the Cozystack GitHub repository, send a pull request and ask the maintainers for help.

CozystackOpen Source

Announcement Oct 3, 2024

Cozystack v0.16.0: Alert System with Telegram Notifications and More Improvements

Cozystack v0.16.0 adds an alert system based on the open-source tool Alerta, with notifications to Telegram, plus a set of other platform improvements.

KubernetesCozystackKubeVirtCiliumGitOpsObservability

News Sep 26, 2024

Recent Changes in the Cozystack Open Source Platform: OpenCost, Log Collection and Bridge Binding for VMs

What changed in Cozystack from v0.12 to v0.15: OpenCost cost monitoring, log collection on VictoriaLogs and Fluent Bit, and faster VMs with bridge binding.

KubernetesPlatform EngineeringDevOpsOpen SourceCozystack

News Sep 25, 2024

Cozystack has officially been included in the CNCF Landscape

Cozystack is now listed in the CNCF Landscape in the Platform and Certified Kubernetes – Installer categories. What that means and what is new.

KubernetesPlatform EngineeringDevOpsOpen SourceCloudCozystack

Article Sep 10, 2024

Issue with Configuring Registry Mirroring in Harbor

Harbor proxies docker.io, ghcr.io and other registries only as separate projects, which breaks Docker registry mirrors. How we worked around it.

DevOpsKubernetes

Article Aug 23, 2024

Managed Kubernetes in open source platform Cozystack: why we’re doing this

Why Cozystack ships a managed Kubernetes service: a Kubernetes API inside your own cloud that lets users request services and use resources on demand.

KubernetesCozystackMulti-tenancyObservabilityTerraform

Tutorial Aug 16, 2024

Installing a Kubernetes Cluster Managed by Cozystack: A Detailed Guide by GoHost and Ænix

A step-by-step guide from GoHost.kz: cluster topology, booting Talos Linux, talos-bootstrap, installing Cozystack and configuring the disk subsystem.

ProxmoxKubernetesCozystackTalosHostingetcd

Announcement Aug 15, 2024

Cozystack v0.11: S3 Buckets, Better Tenant Isolation and UI Enhancements

The Cozystack v0.11 release is now available for download, installation, or updating current installations.

KubernetesCozystackCiliumTalosLINSTORMulti-tenancy

Article Aug 1, 2024

Migrating FreeIPA from CentOS 7 LXC container to Rocky Linux and new COSI driver for SeaweedFS

Two updates from Ænix: a write-up on moving FreeIPA from a CentOS 7 LXC container to Rocky Linux, and a new open-source COSI driver for SeaweedFS.

KubernetesCozystackMigrationStorageFreeIPA

Article Aug 1, 2024

FreeIPA Tips and Tricks: Migrating FreeIPA from a CentOS 7 LXC Container to Rocky Linux, Debugging and Expired Certificates

How we revived a broken FreeIPA in a CentOS 7 LXC container on Proxmox: debugging systemd, renewing expired certificates and moving it to Rocky Linux.

ProxmoxCozystackMigrationBackup and DRFreeIPA