EPIC: Add an lifecycle agent

[ruben-etu]

Goals

• Retrieve the agent version
• Be able to start a process
• Be able to provide its stdout/stderr:
  • First milestone: at the end of the process
  • Second milestone: streaming
• Be able to stop a process (send it a signal)

Deliverables

• Agent (cloude-agentd) (Rust)
• Server (cloude-hostd) (Rust)
• Agent ↔ server protocol (over serial)

• Backend ↔ lumper-hostd protocol: to be defined (open choice, gRPC/whatever)

Cross-team Interactions

• VMM: Create the serial port
• VMM: Start the host-side daemon
• Images/initramfs: Inject the agent into the image (including init hook)
• UI/UX: Be able to send the “stop” command and retrieve stdout/stderr

[ruben-etu]

Pinged relevant teams in the discord.
=> hostd and agentd are loosely coupled to the rest of the project; work can start independently.

[ThomasRubini]

Any news ?

[jorisvilardell]

I put here a sketch of the communication between the services :

The agent need to know his IP to be called by the backend over HTTP.