Open Source Red Hat OpenShift Alternatives

Cozystack is a free platform and framework for building clouds. Point it at a pile of servers and it turns them into a system with a REST API for spawning tenant services, which removes the job of assembling that stack by hand every time a team or a customer needs one.

It is a CNCF Sandbox project, originally built and sponsored by Aenix, released under Apache 2.0 and versioned according to semantic versioning. A web interface sits over the API, so operators and tenants are not limited to editing configuration files.

The services it hands out cover most of what a small cloud is expected to sell.

• Kubernetes clusters: spawn them through the API instead of building each one by hand.
• Databases: offer database instances as a service to teams or paying customers.
• Virtual machines: run the workloads that do not belong in a container.
• Load balancers: publish tenant services without wiring the network for each one.
• HTTP caching: put a caching layer in front of hosted sites and APIs.

The documentation describes three ways teams use it. As the backend of a public cloud, as a private cloud driven by an infrastructure as code approach, or simply as a Kubernetes distribution for bare metal when the rest of the platform is not wanted. Getting started guides, troubleshooting and the roadmap live on the project website, weekly community meetings and a Telegram group carry the discussion, and companies offering commercial support are listed on the same site.