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homelab-optimized/scripts/emergency-fix-watchtower-crash.sh
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Sanitized mirror from private repository - 2026-04-05 10:53:12 UTC
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#!/bin/bash
# EMERGENCY FIX: Stop Watchtower crash loop caused by invalid Shoutrrr URL format
# The issue: Used http:// instead of ntfy:// - Shoutrrr doesn't recognize "http" as a service
set -e
echo "🚨 EMERGENCY: Fixing Watchtower crash loop"
echo "=========================================="
echo "Issue: Invalid notification URL format causing crash loop"
echo "Error: 'unknown service \"http\"' - Shoutrrr needs ntfy:// format"
echo
# Check if running as root/sudo
if [[ $EUID -ne 0 ]]; then
echo "❌ This script must be run as root or with sudo"
exit 1
fi
echo "🛑 Stopping crashed Watchtower container..."
docker stop watchtower 2>/dev/null || echo "Container already stopped"
echo "🗑️ Removing crashed container..."
docker rm watchtower 2>/dev/null || echo "Container already removed"
echo "🔧 Creating new Watchtower with CORRECT notification URL format..."
echo " Using: ntfy://localhost:8081/updates?insecure=yes"
echo " (This forces HTTP instead of HTTPS for local ntfy server)"
docker run -d \
--name watchtower \
--restart unless-stopped \
-p 8091:8080 \
-v /var/run/docker.sock:/var/run/docker.sock \
-e WATCHTOWER_CLEANUP=true \
-e WATCHTOWER_SCHEDULE="0 0 4 * * *" \
-e WATCHTOWER_INCLUDE_STOPPED=false \
-e TZ=America/Los_Angeles \
-e WATCHTOWER_HTTP_API_UPDATE=true \
-e WATCHTOWER_HTTP_API_TOKEN="REDACTED_HTTP_TOKEN" \
-e WATCHTOWER_HTTP_API_METRICS=true \
-e WATCHTOWER_NOTIFICATIONS=shoutrrr \
-e WATCHTOWER_NOTIFICATION_URL="ntfy://localhost:8081/updates?insecure=yes" \
containrrr/watchtower:latest
echo "⏳ Waiting for container to start..."
sleep 5
if docker ps --format '{{.Names}}\t{{.Status}}' | grep watchtower | grep -q "Up"; then
echo "✅ Watchtower is now running successfully!"
echo "🧪 Testing notification (this will trigger an update check)..."
sleep 2
curl -s -H "Authorization: Bearer watchtower-update-token" \
-X POST http://localhost:8091/v1/update >/dev/null 2>&1 || echo "API call completed"
sleep 3
echo "📋 Recent logs:"
docker logs watchtower --since 10s | tail -5
if docker logs watchtower --since 10s | grep -q "unknown service"; then
echo "❌ Still having issues - check logs above"
else
echo "✅ No more 'unknown service' errors detected!"
fi
else
echo "❌ Watchtower failed to start - check logs:"
docker logs watchtower
fi
echo
echo "📝 WHAT WAS FIXED:"
echo " ❌ OLD (BROKEN): http://localhost:8081/updates"
echo " ✅ NEW (WORKING): ntfy://localhost:8081/updates?insecure=yes"
echo
echo "🔍 The issue was using http:// instead of ntfy:// protocol"
echo " Shoutrrr notification system requires ntfy:// format"
echo " The ?insecure=yes parameter forces HTTP instead of HTTPS"
echo
echo "🔧 Repository files have been updated with the correct format"
echo "✅ Emergency fix complete!"