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OpenStack Zun

OpenStack Zun is an OpenStack service that provides container management (container infrastructure) as a first-class resource alongside other OpenStack compute abstractions.

  • Container lifecycle management (container infrastructure) integrated into OpenStack APIs
  • Support for multiple container runtimes via a pluggable driver model (container runtime integration)
  • Use of OpenStack identity, networking, and storage services for containers (cloud infrastructure integration)
  • Application Programming Interface (API) service to provision, list, update, and delete container instances (infrastructure API)
  • Integration with other OpenStack projects such as Nova, Neutron, Cinder, and Keystone for unified resource control (cloud platform interoperability)

More About OpenStack Zun

OpenStack Zun is an OpenStack project focused on delivering containers (container infrastructure) as managed resources within an OpenStack cloud. It targets environments where operators want to run container workloads using the same operational, identity, networking, and storage constructs already used for virtual machines and other OpenStack services. Zun exposes a dedicated API for containers but relies on the existing OpenStack control plane to provide multi-tenant governance and resource isolation.

At its core, Zun offers container lifecycle management (infrastructure automation) capabilities, including creation, inspection, update, and deletion of containers through a Representational State Transfer (REST) API and Command-Line Interface (CLI). It uses a driver-based architecture (platform extensibility) to connect to different container runtimes, enabling operators to plug in specific engines according to policy and environment needs. This model abstracts container runtime details from end users, who interact only with the OpenStack-style API, while operators configure runtimes and host management.

Zun integrates with Keystone for authentication and authorization (identity and access management), Neutron for container networking (cloud networking), and Cinder or other storage backends for persistent volumes (block storage). Through these integrations, containers can participate in the same network segments as virtual machines, use similar security group constructs, and attach to block storage volumes provisioned by the broader OpenStack environment. This alignment allows enterprises to treat containers as another resource type governed by existing OpenStack quotas, projects, and policies.

In enterprise deployments, Zun is used to provide container hosting (platform services) for application teams that require on-demand containers but prefer to consume them through familiar OpenStack APIs and credentials rather than directly operating container clusters. Operators can manage hosts and capacity using standard OpenStack tooling while exposing Zun endpoints to tenants who launch and manage containers. Zun’s placement within the OpenStack ecosystem positions it in the directory category of container infrastructure and cloud platform integration, where it connects container workloads with OpenStack’s identity, networking, and storage frameworks in a unified control plane.