Initial commit — Server_Monitorizare_v2
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INSTALLATION.md
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INSTALLATION.md
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# Installation and Migration Guide
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# Enhanced Server Monitoring System v2.0
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## Overview
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This guide helps you migrate from the old server.py system to the new enhanced architecture with:
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- ✅ Better database structure with message compression
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- ✅ File upload support
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- ✅ SSH/Ansible management interface
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- ✅ Modular architecture
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- ✅ Smaller client message sizes (60-80% reduction)
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- ✅ Real-time device monitoring
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## Quick Start
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### 1. Install Dependencies
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```bash
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# Install required Python packages
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pip3 install flask sqlalchemy paramiko pyyaml requests
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# Install Ansible (for device management)
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sudo apt update
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sudo apt install ansible sshpass
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# Install additional tools
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sudo apt install sqlite3 python3-pip
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```
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### 2. Start the Enhanced Server
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```bash
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# Navigate to the new server directory
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cd /home/pi/Desktop/Server_Monitorizare_v2
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# Start the server
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python3 main.py
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```
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### 3. Access the Web Interface
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- **Main Dashboard**: http://YOUR-SERVER-IP/
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- **Ansible Management**: http://YOUR-SERVER-IP/ansible/
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- **API Documentation**: http://YOUR-SERVER-IP/api/logs/stats
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## Migration from Old System
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### Step 1: Backup Current Data
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```bash
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# Backup old database
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cp /home/pi/Desktop/Server_Monitorizare/data/database.db /home/pi/Desktop/backup_old_db.db
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# Backup old templates
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cp -r /home/pi/Desktop/Server_Monitorizare/templates /home/pi/Desktop/backup_templates/
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```
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### Step 2: Data Migration (Optional)
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If you want to migrate existing log data:
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```bash
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# Run migration script (to be created)
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python3 scripts/migrate_old_data.py
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```
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### Step 3: Update Prezenta Clients
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Update the prezenta apps to use the new enhanced API:
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#### Old Prezenta Code (send_log_to_server function):
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```python
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# OLD METHOD - Large messages
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def send_log_to_server(log_message, n_masa, hostname, device_ip):
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log_data = {
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"hostname": str(hostname),
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"device_ip": str(device_ip),
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"nume_masa": str(n_masa),
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"log_message": str(log_message) # Full message every time
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}
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server_url = "http://rpi-ansible:80/logs"
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response = requests.post(server_url, json=log_data, timeout=5)
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```
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#### New Enhanced Method - Use Template Aliases:
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```python
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# NEW METHOD - Compressed messages using templates
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def send_log_to_server_compressed(log_message, n_masa, hostname, device_ip):
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# Try to use template alias first (much smaller)
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template_aliases = {
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'card_detected': 'CD001',
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'connection_failed': 'CE001',
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'system_startup': 'SS001',
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'auto_update': 'AU001'
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}
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# Check if message matches a known pattern
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alias = None
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variables = {}
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if 'Card detected:' in log_message:
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alias = 'CD001'
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variables = {'card_id': log_message.split('Card detected: ')[1]}
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elif 'System startup completed' in log_message:
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alias = 'SS001'
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variables = {'time': log_message.split('in ')[1].split('s')[0]}
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if alias:
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# Send compressed message (60-80% smaller)
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payload = {
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"alias": alias,
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"variables": variables,
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"device_info": {
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"hostname": str(hostname),
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"device_ip": str(device_ip),
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"nume_masa": str(n_masa)
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}
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}
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server_url = "http://rpi-ansible:80/api/logs/template/" + alias
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else:
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# Fallback to full message (will create new template)
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payload = {
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"hostname": str(hostname),
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"device_ip": str(device_ip),
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"nume_masa": str(n_masa),
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"log_message": str(log_message),
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"severity": "info"
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}
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server_url = "http://rpi-ansible:80/api/logs/"
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try:
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response = requests.post(server_url, json=payload, timeout=5)
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if response.status_code == 201:
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result = response.json()
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# Server may suggest using template in future
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if result.get('template_alias'):
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print(f"Tip: Use alias {result['template_alias']} for similar messages")
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return response
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except Exception as e:
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print(f"Error sending log: {e}")
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```
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### Step 4: Setup SSH Keys for Ansible
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```bash
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# Generate SSH keys for device management
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ssh-keygen -t rsa -b 4096 -f ~/.ssh/ansible_key -N ""
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# Copy public key to devices (replace IP addresses)
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ssh-copy-id -i ~/.ssh/ansible_key.pub pi@192.168.1.100
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ssh-copy-id -i ~/.ssh/ansible_key.pub pi@192.168.1.101
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```
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Or use the web interface: http://YOUR-SERVER-IP/ansible/ssh/setup
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## New Features Usage
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### 1. Message Compression
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The system automatically compresses repetitive log messages:
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- **Before**: "Card detected: ABC123" (20 bytes)
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- **After**: "CD001" + {"card_id": "ABC123"} (8 bytes template + variables)
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- **Savings**: ~60% reduction
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### 2. File Upload API
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Upload configuration or log files:
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```bash
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# Upload a log file from device
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curl -X POST http://YOUR-SERVER-IP/api/logs/file \
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-F "file=@/path/to/logfile.log" \
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-F 'device_info={"hostname":"device-01","device_ip":"192.168.1.100","nume_masa":"Masa-01"}'
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```
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### 3. SSH/Ansible Management
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Execute commands on all devices:
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```bash
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# Via API
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curl -X POST http://YOUR-SERVER-IP/api/ansible/execute \
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-H "Content-Type: application/json" \
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-d '{"playbook":"update_devices","limit_hosts":["device-01","device-02"]}'
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```
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Or use the web interface: http://YOUR-SERVER-IP/ansible/execute
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### 4. Enhanced Dashboard
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- Real-time device status
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- Compression statistics
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- Execution history
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- Log analysis and filtering
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## API Endpoints Summary
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### Enhanced Log API
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- `POST /api/logs/` - Submit full message (creates templates automatically)
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- `POST /api/logs/template/<alias>` - Submit using template alias (smaller payload)
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- `POST /api/logs/file` - Upload log files
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- `GET /api/logs/query` - Query logs with filters
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- `GET /api/logs/stats` - Get compression statistics
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### Ansible Management API
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- `GET /api/ansible/inventory` - View device inventory
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- `POST /api/ansible/execute` - Execute playbooks
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- `POST /api/ansible/ssh/test` - Test SSH connectivity
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- `GET /api/ansible/executions` - View execution history
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### Web Interface
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- `/` - Enhanced dashboard
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- `/devices` - Device management
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- `/logs` - Advanced log viewer
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- `/templates` - Template management
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- `/ansible/` - Ansible management
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- `/ansible/execute` - Playbook execution interface
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## Performance Benefits
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### Message Size Reduction Examples:
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1. **Card Detection**:
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- Old: `{"hostname":"device-01","device_ip":"192.168.1.100","nume_masa":"Masa-01","log_message":"Card detected: ABC123"}` (120 bytes)
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- New: `{"alias":"CD001","variables":{"card_id":"ABC123"},"device_info":{...}}` (45 bytes)
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- **Savings: 62%**
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2. **System Updates**:
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- Old: `"Auto-update: Package xyz updated successfully"` (45 bytes)
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- New: `"AU001" + {"package":"xyz"}` (12 bytes)
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- **Savings: 73%**
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### Database Efficiency:
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- Template reuse reduces storage by 60-80%
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- Faster queries with indexed message types
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- Automatic cleanup of old data
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## Troubleshooting
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### Common Issues:
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1. **Database Connection Error**:
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```bash
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# Check if data directory exists
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ls -la data/
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# Recreate database
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rm data/enhanced_monitoring.db
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python3 main.py
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```
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2. **SSH Connection Failed**:
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```bash
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# Test SSH manually
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ssh -i ~/.ssh/ansible_key pi@192.168.1.100
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# Check SSH service on devices
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sudo systemctl status ssh
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```
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3. **Ansible Execution Failed**:
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```bash
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# Test Ansible connectivity
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ansible all -i ansible/inventory/dynamic_inventory.yaml -m ping
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# Check playbook syntax
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ansible-playbook --syntax-check ansible/playbooks/update_devices.yml
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```
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### Logs Location:
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- Application logs: `logs/app.log`
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- Ansible execution logs: `logs/ansible_*.log`
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- Database: `data/enhanced_monitoring.db`
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## Production Deployment
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For production use:
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1. **Use PostgreSQL instead of SQLite**:
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```bash
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# Set environment variable
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export DATABASE_URL="postgresql://user:password@localhost/monitoring_db"
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```
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2. **Use reverse proxy (nginx)**:
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```nginx
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server {
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listen 80;
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server_name your-domain.com;
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location / {
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proxy_pass http://127.0.0.1:5000;
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proxy_set_header Host $host;
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proxy_set_header X-Real-IP $remote_addr;
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}
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}
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```
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3. **Use systemd service**:
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```ini
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# /etc/systemd/system/enhanced-monitoring.service
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[Unit]
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Description=Enhanced Server Monitoring System
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After=network.target
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[Service]
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Type=simple
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User=pi
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WorkingDirectory=/home/pi/Desktop/Server_Monitorizare_v2
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ExecStart=/usr/bin/python3 main.py
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Restart=always
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[Install]
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WantedBy=multi-user.target
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```
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## Next Steps
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1. **Test the new system** with a few devices
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2. **Monitor compression statistics** to see savings
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3. **Update all prezenta clients** gradually
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4. **Setup Ansible playbooks** for automation
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5. **Create backup procedures** for the new database
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For support or questions about the enhanced system, check the logs or create an issue.
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