This charm provides the base system for a host system that will be used for Testflinger device agents. It installs the base dependencies and provides a target for deploying the testflinger-agent along with testflinger-device-connector on top of. Additionally, it copies the scripts in src/tf-cmd-scripts/ to the host system. The scripts would be used by the testflinger-agent to trigger the testflinger-device-connector at each phase.

The Testflinger agent is a per-machine service that runs on an agent host system. The agent is configured with a set of queues for which it knows how to run jobs. When it is not running a job, the agent:

Asks the server for a job to run from the list of configured queues
Dispatches the device connector to execute each phase of the job
Reports the results of the job back to the server
Uploads artifacts (if any) saved from the job to the server