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gateway-watchdog

by bryantegomoh

Production-grade bash watchdog for the OpenClaw gateway. Runs via launchd every 5 minutes. Handles boot grace periods, progressive retry with backoff, port-level fallback checks, stale PID detection, and restart cooldowns — preventing restart loops while keeping the gateway reliably alive.

View Chinese version with editor review

安装

claude skill add --url github.com/openclaw/skills/tree/main/skills/bryantegomoh/gateway-watchdog-v2

文档

gateway-watchdog

Keeps the OpenClaw gateway alive without killing it during startup. Five defensive layers prevent false restarts and restart loops.

How It Works

  1. HTTP check — pings http://127.0.0.1:18789; exits immediately if the gateway responds
  2. Boot grace — if the process is <180s old, waits without acting (avoids killing a booting gateway)
  3. Port check — if the port is bound but HTTP is slow, waits up to 15s for recovery
  4. Progressive retry — 3 retries at 15s / 30s / 45s intervals
  5. Cooldown — enforces a 10-minute gap between restarts to prevent loops

Logs go to ~/.openclaw/logs/watchdog.log.

Setup (macOS launchd)

Create ~/Library/LaunchAgents/com.openclaw.gateway-watchdog.plist:

xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.openclaw.gateway-watchdog</string>
    <key>ProgramArguments</key>
    <array>
        <string>/bin/bash</string>
        <string>/path/to/skills/gateway-watchdog/scripts/gateway-watchdog.sh</string>
    </array>
    <key>StartInterval</key>
    <integer>300</integer>
    <key>RunAtLoad</key>
    <true/>
</dict>
</plist>

Then load it:

bash
launchctl load ~/Library/LaunchAgents/com.openclaw.gateway-watchdog.plist

Usage (manual)

bash
bash scripts/gateway-watchdog.sh

Requirements

  • macOS (uses launchctl, lsof, date -j)
  • curl in PATH
  • OpenClaw gateway running under launchd as ai.openclaw.gateway