Cozystack is a free, open-source cloud platform built on Kubernetes that turns a set of bare-metal servers into a private cloud. It exposes a simple Kubernetes-native API for spawning tenant Kubernetes clusters, virtual machines, managed databases, load balancers, and object storage, aimed at hosting providers and platform teams that want public-cloud-style services on hardware they control.[1][2]
Quick verdict
Hosting providers and platform teams that can operate bare metal benefit most from Cozystack: it turns owned servers into a Kubernetes-native private cloud with tenant clusters, VMs, and one-click data services. The decisive capability is the self-service catalogue inside quotas, which removes the platform team as the provisioning bottleneck. The material constraint is operational ownership: advanced difficulty on Talos Linux and hardware you run, with partner support by quote and no public price list. If you need managed simplicity instead of infrastructure you operate, choose Rancher or a public cloud; if you have operator capacity and want cloud services on your own servers, Cozystack fits.[1][2][3]
Key features
Bare metal turned into a private cloud A set of bare-metal servers becomes a private cloud with a Kubernetes-native API for provisioning clusters, virtual machines, databases, load balancers, and caching services.[1]
VMs and containers on one cluster Virtual machines and containers run on the same cluster on your own servers, with live migration and replicated storage, giving VMware-leaving teams a migration path without a rewrite.[1]
Isolated tenant clusters with quotas Each tenant or team gets isolated Kubernetes clusters on shared hardware, with quotas the platform team sets, so developers self-provision without an account on anyone's public cloud.[1][2]
One-click managed data services Managed PostgreSQL, MySQL, Redis, and Kafka deploy as one-click services on the platform, alongside an S3-compatible object store.[1]
Kubernetes-native self-service API Developers request what they need as Kubernetes resources and receive it in minutes inside quotas, removing the platform team as the ticket bottleneck.[1][2]
Talos, KubeVirt, Cilium, LINSTOR foundation The platform builds on Talos Linux with KubeVirt, Cilium, and LINSTOR, an immutable-OS and storage stack designed for running stateful and virtualized workloads on Kubernetes.[1][2]
CNCF Certified Kubernetes conformance Cozystack is a CNCF Certified Kubernetes offering, with v1.35 and v1.34 recorded in the conformance record, so workloads target standard Kubernetes APIs.[1][2]
Live demo dashboard before install A live browser demo of the real dashboard with demo data lets teams browse the marketplace and console before installing anything, with no cluster or signup.[1]
Who will love it
Hosting and cloud providers that want to turn existing hardware into a catalogue of isolated tenants with self-service provisioning and billing-driven APIs.[1]
Teams leaving VMware that need virtual machines and containers on the same cluster, on servers they control, with a migration tool rather than a rewrite.[1]
Platform teams that want developers to self-provision databases, clusters, and environments as Kubernetes resources inside quotas instead of filing tickets.[1][2]
Who should avoid it
Teams without bare-metal and Kubernetes operator capacity: installation runs through Talos Linux on physical servers with advanced operational difficulty.[1][2]
Organizations needing fixed pricing now: enterprise support comes from listed partners by quote, and no public price list was observed.[1]
Teams wanting a managed SaaS instead of infrastructure to run: Cozystack is self-hosted software on your hardware, not a hosted cloud you sign up for.[1]
Alternatives and compatibility
Rancher is the catalogue-listed incumbent relationship for teams comparing private-cloud Kubernetes and virtual-machine management on controlled infrastructure.[1]
Public-cloud virtualization and managed Kubernetes remain the alternative for teams that prefer hyperscaler billing over operating their own servers.[1]
Teams already assembling Talos, KubeVirt, and replicated storage by hand get the same components pre-integrated, with tenant isolation and a service catalogue on top.[1][2]
Questions worth asking
What is the best Cozystack alternative for non-technical users?
Is Cozystack really no-code?
How much does Cozystack cost per month?
Sources and editorial review
Source research. Reviewed on October 9, 2026. Written by Sanjib Sah. AI assisted; reviewed by a human editor.
We have not run or tested this product.
- Cozystack official homepage
official · Observed October 9, 2026
Official Cozystack homepage: free Kubernetes-based cloud platform positioning, bare-metal to private-cloud workflow, tenant clusters, VMs with live migration and replicated storage, managed data services, self-service quotas, use cases, live demo, CNCF Certified Kubernetes badge.
- Cozystack GitHub repository (official)
official · Observed October 9, 2026
Official Cozystack GitHub repository: Apache-2.0 licence, open-source identity, release and star history used for catalogue facts.
- Cozystack v1.6 documentation (official)
official · Observed October 9, 2026
Official Cozystack v1.6 documentation index: Talos install path, Kubernetes bootstrap, tenant creation, platform stack and tenant-system guides.
- Cozystack support page (official)
official · Observed October 9, 2026
Official Cozystack support page: enterprise support via listed partners with contact links, no public price list.
- Cozystack Certified Kubernetes announcement (official)
official · Observed October 9, 2026
Official Cozystack blog: Certified Kubernetes announcement recording v1.35 and v1.34 in the CNCF conformance record.
Compared with these products
No explicit proprietary baseline is recorded.