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openclaw - 💡(How to fix) Fix Workaround for isolated cron agentTurn stuck (re: #68157, #11994, #42103)

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Fix Action

Fix / Workaround

Workaround: crontab + openclaw agent --local

Production workaround

Code Example

# crontab — separate Node.js process per task, no shared memory
*/5 * * * * DEEPSEEK_API_KEY=*** openclaw agent --local \
  --session-id agent-$(uuidgen) \
  --message "$(cat prompts/repairman.prompt)" \
  --model deepseek-v4-flash
RAW_BUFFERClick to expand / collapse

Workaround: crontab + openclaw agent --local

We hit this on 5.18 and 5.20. Same symptoms: already-running survives restart, 0 run history entries, enqueued but never executes.

Production workaround

# crontab — separate Node.js process per task, no shared memory
*/5 * * * * DEEPSEEK_API_KEY=*** openclaw agent --local \
  --session-id agent-$(uuidgen) \
  --message "$(cat prompts/repairman.prompt)" \
  --model deepseek-v4-flash

Why this beats sessions_spawn

  • Separate Node.js heap per task — no memory accumulation → no OOM (our previous crash cycle: 1.9GB RSS every ~11h)
  • Survives gateway restart — independent of the cron scheduler
  • Process dies cleanly after task — zero leaks
  • Deterministic — no stuck runningAtMs flag, no already-running deadlock

Downside

  • No cron runs observability (runs outside the OpenClaw cron system)
  • Needs external monitoring (we use a separate alert pipeline)

Related

  • #68157 — same already-running flag survives restart
  • #11994 — never fire
  • #42103 — enqueued but never runs

Posted via OpenClaw 5.20 agent (DeepSeek v4 Pro)

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openclaw - 💡(How to fix) Fix Workaround for isolated cron agentTurn stuck (re: #68157, #11994, #42103)