Added systemd config

README.md

@@ -154,6 +154,44 @@ Run the monitoring loop to continuously push data:
 ./monitor_loop.sh "London" 60 "http://10.0.0.5:8428"
 ```
 
+### Systemd Service (Autostart on Boot)
+
+To run the monitor automatically as a system service:
+
+1. **Install the service:**
+```bash
+sudo cp nationalgrid-monitor.service /etc/systemd/system/
+sudo systemctl daemon-reload
+```
+
+2. **Customize settings (optional):**
+Edit `/etc/systemd/system/nationalgrid-monitor.service` and modify the `ExecStart` line to change:
+- GSP name (default: "Bishops Wood")
+- Update interval in seconds (default: 60)
+- VictoriaMetrics URL (default: http://localhost:8428)
+
+3. **Enable and start the service:**
+```bash
+sudo systemctl enable nationalgrid-monitor.service
+sudo systemctl start nationalgrid-monitor.service
+```
+
+4. **Check service status:**
+```bash
+sudo systemctl status nationalgrid-monitor.service
+```
+
+5. **View logs:**
+```bash
+sudo journalctl -u nationalgrid-monitor.service -f
+```
+
+6. **Stop or disable:**
+```bash
+sudo systemctl stop nationalgrid-monitor.service
+sudo systemctl disable nationalgrid-monitor.service
+```
+
 ## Grafana Integration
 
 Once metrics are in VictoriaMetrics: