In productionProbeginnerStartup readiness

The robot fails only at boot

Make drive startup wait for a usable CAN interface without a fixed sleep.

Pairs with systemd and startup order in Production ROS Operations. Read the concept first, then diagnose it here.

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Operator report

Manual service restart works, but boot startup reports `can0 not found`.

Ubuntu 24.04, ROS 2 Jazzy, Cyclone DDS, containers, systemd, OpenTelemetry fleet sandbox

System boundary

Trace only the relevant path.

systemd network targetcan0 readinessdrive service

How this lab works

You diagnose it — no command list.

Open the repair workspace and gather your own evidence in a real terminal. No diagnostic commands are handed to you — finding the fault is the exercise. Stuck? Progressive hints unlock inside the workspace.

Verification

Your repair must pass more than the visible symptom.

  • Cold boot starts drive
  • Missing can0 fails clearly
  • Hidden regression behavior
  • Root cause explanation