Linux Server Health Monitor & Auto-Maintenance Script

Key Benefits of Our Server Health Monitor Script

• 🛡️ 24/7 Automated Monitoring: Continuous health checks every minute without manual intervention.
• ⚡ Intelligent Auto-Recovery: Two-strike policy automatically restarts services when issues are detected.
• 💾 Smart Cache Management: Automatic cache clearing when memory usage exceeds thresholds.
• 🔄 Automatic System Updates: Keeps your server secure with scheduled update checks and installations.
• 📊 Comprehensive Resource Tracking: Monitors CPU, RAM, disk usage, and zombie processes.
• 🔧 Self-Healing Capabilities: Automatically restarts failed critical services (SSH, networking, cron).
• 📝 Detailed Logging System: Complete audit trail with color-coded terminal output and persistent logs.
• 🚀 Zero Downtime Goal: Proactive maintenance prevents server crashes and minimizes service interruptions.

Advanced Monitoring Features

• 🎯 Two-Strike Resource Policy : Prevents false positives by confirming issues before taking action.
• ⏰ Scheduled Maintenance Reboots : Configurable weekly reboots during low-traffic hours (default: 5 AM).
• 🔄 Automatic rc.local Setup : Ensures your services start automatically after system reboots.
• 🧹 Routine Cache Maintenance : Performs cache clearing every 6 hours to optimize memory usage.
• 🔒 Process Lock Management : Prevents multiple instances from running simultaneously.
• 📈 Performance Metrics : Tracks top resource-consuming processes for troubleshooting.

Simple 3-Step Setup Process

1. Upload & Configure: Place the script on your server and customize thresholds (CPU, RAM, reboot schedule).
2. Set Service Script Path: Update SERVICE_SCRIPT_1 variable to point to your service startup script.
3. Add to Cron: Add one line to crontab for automatic execution every minute: * * * * * /path/to/script.sh

What Gets Monitored & Managed

Technical Requirements & Compatibility

• Compatible with all Linux distributions (Ubuntu, Debian, CentOS, RHEL)
• Requires root/sudo privileges for system management functions
• Minimal resource footprint - uses less than 1% CPU and 10MB RAM
• Works with systemd and traditional init systems
• Pure bash script with no external dependencies
• Automatic log rotation keeps disk usage minimal
• Color-coded terminal output for easy monitoring

Perfect For These Use Cases

• ✅ Web hosting servers running Apache/Nginx
• ✅ Database servers (MySQL, PostgreSQL, MongoDB)
• ✅ Application servers and microservices
• ✅ Development and staging environments
• ✅ VPS and dedicated servers
• ✅ Docker/container host machines
• ✅ Game servers and streaming services