ros2 runtime_error ai_generated partial

[diagnostic_aggregator] Stale diagnostic: /sensors/imu

ID: ros2/diagnostic-updater-stale

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70%Fix Rate
82%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2 active — — —

Root Cause

diagnostic_updater reports stale status because the hardware driver stopped publishing diagnostics within the expected period.

generic

Workarounds

  1. 90% success Check if the hardware driver node is still running 
    ros2 node list | grep driver_node && ros2 topic hz /diagnostics
  2. 85% success Verify diagnostic_updater frequency matches the driver's publication rate 
    Set diagnostic_updater period to match or slightly exceed the driver rate
  3. 78% success Add a hardware watchdog that restarts the driver on failure

Dead Ends

Common approaches that don't work:

  1. Increase the stale timeout to hide the warning 80% fail

    Stale diagnostics usually mean the hardware is actually not responding; hiding delays fault detection

  2. Remove the diagnostic from the aggregator config 75% fail

    Loses monitoring capability for that hardware component