secubox-openwrt/luci-app-system-hub/README.md

System Hub - Central Control Dashboard

Central system control and monitoring dashboard for OpenWrt with comprehensive system management capabilities.

Features

System Monitoring

• Real-time system information (hostname, model, uptime, kernel version)
• System health metrics with visual gauges (CPU, RAM, Disk)
• CPU load average (1min, 5min, 15min)
• Memory usage detailed breakdown
• Storage monitoring for all mount points
• Temperature monitoring (thermal zones)

Service Management

• List all system services with status
• Start/Stop/Restart services
• Enable/Disable service autostart
• Real-time service status (running/stopped)
• Batch service management

System Logs

• View system logs with configurable line count (50-1000 lines)
• Real-time log filtering
• Search logs by keyword
• Terminal-style log display

Backup & Restore

• Create system configuration backup (tar.gz)
• Download backup archive
• Restore configuration from backup
• System reboot functionality

Installation

opkg update
opkg install luci-app-system-hub
/etc/init.d/rpcd restart
/etc/init.d/uhttpd restart

Dependencies

• luci-base: LuCI framework
• rpcd: RPC daemon
• coreutils: Core utilities
• coreutils-base64: Base64 encoding/decoding

Usage

Web Interface

Navigate to System → System Hub in LuCI.

Overview Tab

• System information cards
• Health metrics with visual gauges:
  • CPU Load (percentage based on cores)
  • Memory Usage (percentage with MB breakdown)
  • Disk Usage (percentage with size info)
• CPU details (model, cores, load average)
• Temperature monitoring (color-coded: green < 60°C, orange < 80°C, red ≥ 80°C)
• Storage details for all mount points

Services Tab

• List of all system services
• Status indicators (running/stopped)
• Autostart status (enabled/disabled)
• Action buttons:
  • Start (for stopped services)
  • Stop (for running services)
  • Restart (for all services)
  • Enable/Disable autostart

System Logs Tab

• Log viewer with filter controls
• Configurable line count (50, 100, 200, 500, 1000)
• Keyword filtering
• Refresh logs on demand
• Terminal-style display (black background, green text)

Backup & Restore Tab

• Create and download configuration backup
• Upload and restore backup file
• System reboot with confirmation

Command Line

Get System Status

ubus call luci.system-hub status

Get System Information

ubus call luci.system-hub get_system_info

Output:

{
  "hostname": "openwrt",
  "model": "Raspberry Pi 4 Model B",
  "board": "rpi-4",
  "openwrt_version": "OpenWrt 23.05.0",
  "kernel": "5.15.134",
  "architecture": "aarch64",
  "uptime_seconds": 86400,
  "uptime_formatted": "1d 0h 0m",
  "local_time": "2025-12-24 10:30:00"
}

Get System Health

ubus call luci.system-hub get_health

Output:

{
  "cpu": {
    "model": "ARM Cortex-A72",
    "cores": 4
  },
  "load": {
    "1min": "0.25",
    "5min": "0.30",
    "15min": "0.28"
  },
  "memory": {
    "total_kb": 4096000,
    "free_kb": 2048000,
    "available_kb": 3072000,
    "used_kb": 1024000,
    "buffers_kb": 512000,
    "cached_kb": 1536000,
    "percent": 25
  },
  "storage": [
    {
      "filesystem": "/dev/mmcblk0p2",
      "size": "29G",
      "used": "5.2G",
      "available": "22G",
      "percent": 19,
      "mountpoint": "/"
    }
  ],
  "temperatures": [
    {
      "zone": "thermal_zone0",
      "celsius": 45
    }
  ]
}

List Services

ubus call luci.system-hub list_services

Manage Service

# Start a service
ubus call luci.system-hub service_action '{"service":"network","action":"start"}'

# Stop a service
ubus call luci.system-hub service_action '{"service":"network","action":"stop"}'

# Restart a service
ubus call luci.system-hub service_action '{"service":"network","action":"restart"}'

# Enable autostart
ubus call luci.system-hub service_action '{"service":"network","action":"enable"}'

# Disable autostart
ubus call luci.system-hub service_action '{"service":"network","action":"disable"}'

Get Logs

# Get last 100 lines
ubus call luci.system-hub get_logs '{"lines":100,"filter":""}'

# Get last 500 lines with filter
ubus call luci.system-hub get_logs '{"lines":500,"filter":"error"}'

Create Backup

ubus call luci.system-hub backup_config

Returns backup data in base64 format with size and filename.

Restore Configuration

# Encode backup file to base64
DATA=$(base64 < backup.tar.gz | tr -d '\n')

# Restore
ubus call luci.system-hub restore_config "{\"data\":\"$DATA\"}"

Reboot System

ubus call luci.system-hub reboot

System will reboot after 3 seconds.

Get Storage Details

ubus call luci.system-hub get_storage

ubus API Reference

status()

Get comprehensive system status overview.

Returns:

{
  "hostname": "openwrt",
  "model": "Device Model",
  "uptime": 86400,
  "health": {
    "cpu_load": "0.25",
    "mem_total_kb": 4096000,
    "mem_used_kb": 1024000,
    "mem_percent": 25
  },
  "disk_percent": 19,
  "service_count": 42
}

get_system_info()

Get detailed system information.

get_health()

Get comprehensive health metrics including CPU, memory, storage, and temperature.

list_services()

List all system services with status.

Returns:

{
  "services": [
    {
      "name": "network",
      "enabled": true,
      "running": true
    },
    {
      "name": "firewall",
      "enabled": true,
      "running": true
    }
  ]
}

service_action(service, action)

Perform action on a service.

Parameters:

• service: Service name (required)
• action: Action to perform (start|stop|restart|enable|disable)

Returns:

{
  "success": true,
  "message": "Service network start successful"
}

get_logs(lines, filter)

Get system logs.

Parameters:

• lines: Number of lines to retrieve (default: 100)
• filter: Filter logs by keyword (optional)

Returns:

{
  "logs": [
    "Dec 24 10:30:00 kernel: ...",
    "Dec 24 10:30:01 daemon.info dnsmasq[123]: ..."
  ]
}

backup_config()

Create system configuration backup.

Returns:

{
  "success": true,
  "data": "H4sIAAAAAAAAA...",
  "size": 12345,
  "filename": "backup-20251224-103000.tar.gz"
}

restore_config(data)

Restore system configuration from backup.

Parameters:

• data: Base64-encoded backup data

Returns:

{
  "success": true,
  "message": "Configuration restored successfully. Reboot required."
}

reboot()

Reboot the system (3-second delay).

Returns:

{
  "success": true,
  "message": "System reboot initiated"
}

get_storage()

Get detailed storage information for all mount points.

System Information Sources

• Hostname: /proc/sys/kernel/hostname
• Model: /tmp/sysinfo/model, /proc/device-tree/model
• Uptime: /proc/uptime
• OpenWrt version: /etc/openwrt_release
• Kernel: uname -r
• CPU info: /proc/cpuinfo
• Load average: /proc/loadavg
• Memory: /proc/meminfo
• Storage: df -h
• Temperature: /sys/class/thermal/thermal_zone*/temp
• Services: /etc/init.d/*

Gauge Visualization

The overview page displays three circular gauges:

CPU Load Gauge

• Percentage calculated from 1-minute load average divided by core count
• Green: < 75%
• Orange: 75-90%
• Red: > 90%

Memory Gauge

• Percentage of memory used
• Shows "Used MB / Total MB"
• Color-coded like CPU

Disk Gauge

• Percentage of root filesystem used
• Shows "Used / Total Size"
• Color-coded like CPU

Security Considerations

• Service actions require write permissions in ACL
• Backup data contains sensitive configuration
• Reboot action is irreversible
• Log filtering does not sanitize sensitive data in logs

Troubleshooting

Services Not Showing

Check if services exist:

ls /etc/init.d/

Health Metrics Not Accurate

Verify system files are accessible:

cat /proc/meminfo
cat /proc/loadavg
df -h

Backup Creation Fails

Ensure sysupgrade is available:

which sysupgrade

Temperature Not Displayed

Check thermal zones:

ls /sys/class/thermal/thermal_zone*/temp

License

Apache-2.0

Maintainer

SecuBox Project support@secubox.com

Version

1.0.0