Initial backup: 18 monitoring scripts + timers + docs

- 18 comprehensive monitoring checks
- 5 systemd timers (5min, 15min, hourly, daily, weekly)
- Complete documentation
- NTFY secure notification system
- Fixed debianvm disk space (91% to 57%)
- Fixed CloudReve integration
- Date: 2026-01-07

scripts/check-databases.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+# Check critical database services
+set -euo pipefail
+
+SEND_NTFY="/usr/local/bin/send-ntfy.sh"
+DEBIANVM_HOST="DEBIANVM"
+
+# Check PostgreSQL on debianvm
+PG_CHECK=$(timeout 10 sshpass -p 'admin' ssh -o StrictHostKeyChecking=no -o ConnectTimeout=5 root@$DEBIANVM_HOST "docker exec postgresql pg_isready 2>/dev/null" 2>/dev/null || echo "FAILED")
+
+if [[ "$PG_CHECK" == *"accepting connections"* ]]; then
+    logger -t database-monitor "PostgreSQL: OK"
+elif [ "$PG_CHECK" = "FAILED" ]; then
+    $SEND_NTFY critical "PostgreSQL Down" "🔴 CRITICAL: PostgreSQL on debianvm is DOWN or unreachable! Multiple services affected." "skull,error,database"
+else
+    $SEND_NTFY critical "PostgreSQL Issue" "🔴 CRITICAL: PostgreSQL on debianvm not accepting connections" "skull,error,database"
+fi
+
+# Check Redis on debianvm
+REDIS_CHECK=$(timeout 10 sshpass -p 'admin' ssh -o StrictHostKeyChecking=no -o ConnectTimeout=5 root@$DEBIANVM_HOST "docker exec redis redis-cli ping 2>/dev/null" 2>/dev/null || echo "FAILED")
+
+if [ "$REDIS_CHECK" = "PONG" ]; then
+    logger -t database-monitor "Redis: OK"
+elif [ "$REDIS_CHECK" = "FAILED" ]; then
+    $SEND_NTFY critical "Redis Down" "🔴 CRITICAL: Redis on debianvm is DOWN or unreachable!" "skull,error,database"
+else
+    $SEND_NTFY critical "Redis Issue" "🔴 CRITICAL: Redis on debianvm not responding to PING" "skull,error,database"
+fi
+
+# Check aria2 RPC (CloudReve depends on this)
+ARIA2_CHECK=$(timeout 10 sshpass -p 'admin' ssh -o StrictHostKeyChecking=no -o ConnectTimeout=5 root@$DEBIANVM_HOST "curl -s -m 5 http://localhost:6800 2>/dev/null" || echo "FAILED")
+
+if [[ "$ARIA2_CHECK" != "FAILED" ]]; then
+    logger -t database-monitor "aria2 RPC: OK"
+else
+    $SEND_NTFY critical "aria2 RPC Down" "🔴 CRITICAL: aria2 RPC on debianvm is DOWN! CloudReve downloads will fail." "skull,error"
+fi
+
+logger -t database-monitor "Database health check completed"