Overview¶

The Container service provides OpenStack-native API for launching and managing application containers without any virtual machine managements.

Also known as the zun project, the OpenStack Container service may, depending upon configuration, interact with several other OpenStack services. This includes:

• The OpenStack Identity service (keystone) for request authentication and to locate other OpenStack services
• The OpenStack Networking service (neutron) for DHCP and network configuration
• The OpenStack Block Storage (cinder) provides volumes for container (optional).
• The OpenStack Image service (glance) from which to retrieve container images (optional).
• The OpenStack Dashboard service (horizon) for providing the web UI (optional).
• The OpenStack Orchestration service (heat) for providing orchestration between containers and other OpenStack resources (optional).

Zun requires at least two nodes (Controller node and Compute node) to run a container. Optional services such as Block Storage require additional nodes.