Alan RomingerandClaude Opus 4.6 3ab18fd58f AAP-89010: Guard heartbeat against missing receptor config (#16611)
The EE sidecar container creates /etc/receptor/receptor.conf on pod
startup. If the task container's dispatcherd reaches the heartbeat
before the config exists, the instance rejoins the cluster at full
capacity with no receptor — causing fatal job failures with no
recovery path.

Three layers of defense:

1. dispatcherd management command: poll for the receptor config file
   before entering the main loop (10s timeout, exits with error to
   let k8s restart the container).

2. Heartbeat: if get_receptor_ctl() raises FileNotFoundError (config
   or socket missing), mark the instance offline so no jobs are
   dispatched to it. Previously this was silently ignored and the
   instance kept full capacity.

3. should_update_config(): catch FileNotFoundError and return True so
   write_receptor_config() can create the file on first boot instead
   of crashing.

Prior art: #12698 (closed without merge) took a broader approach with
custom exception types. See PR comment for overlap analysis.

Closes: AAP-89010

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-08-21 12:39:42 -04:00
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2025-09-18 09:41:41 -04:00

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AWX

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