Architecture & topology

Information about COS architecture, deployment topology, the Juju model layout, and the different stack variants available.

Design philosophy

The guiding principles and goals behind the COS architecture.

• Design goals

Topology & models

How COS organizes charms, relations, and models within the Juju ecosystem.

• Juju topology
• Juju topology labels
• Model topology for COS Lite

Stack shape & data flow

The available stack configurations and how telemetry moves through them.

• Telemetry flow

Coordinated workers

The coordinated workers pattern and the role it plays in COS HA.

• Coordinated workers

Peripheral charms

Charms that extend COS by producing or forwarding telemetry from external sources.

• Peripheral charms