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https://github.com/CyberMind-FR/secubox-deb.git
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CyberMind-FR
da8b7c5570
- Activity-based brightness: ACTIVE (100) on change, SLEEP (20) when stable - K2000 (Knight Rider) sweep effect for boot/alerts - New commands: k2000, success, boot, alert, rainbow - Aligned I2C timing with secubox-led-safe (300ms write delay) - Simplified to POSIX /bin/sh for reliability - Documented I2C bus recovery via platform driver rebind - Removed unstable connect/activity flash Ref #52 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
265 lines
8.3 KiB
Markdown
265 lines
8.3 KiB
Markdown
# SecuBox LED HealthBump System
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**MOCHAbin 3-Tier Health Status Indicator** — v2.0
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The SecuBox HealthBump system uses the MOCHAbin's 3 RGB LEDs as a visual health status indicator, organized in a vertical "level meter" layout.
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> **v2.0 Changes**: Added 300ms I2C delays, timeout protection, and automatic I2C bus reset capability for reliable operation on Debian kernel 6.6.x LTS. Based on proven patterns from `secubox-led-safe`.
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## LED Layout
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```
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┌─────────────────────────────────────────────────────────────┐
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│ MOCHAbin Front Panel │
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├─────────────────────────────────────────────────────────────┤
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│ │
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│ ┌─────┐ │
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│ │ LED3│ TOP - Security Layer │
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│ │ SEC │ Alerts, attacks, CrowdSec bans │
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│ └─────┘ │
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│ │
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│ ┌─────┐ │
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│ │ LED2│ MIDDLE - Services Layer │
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│ │ SVC │ VHosts, certificates, HAProxy │
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│ └─────┘ │
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│ │
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│ ┌─────┐ │
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│ │ LED1│ BOTTOM - Hardware Layer │
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│ │ HW │ Network, CPU, memory │
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│ └─────┘ │
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│ │
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└─────────────────────────────────────────────────────────────┘
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```
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## Color Codes
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| Color | Status | Meaning |
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|-------|--------|---------|
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| 🟢 Green | `ok` | All systems healthy |
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| 🟡 Yellow/Orange | `warn` | Warning, elevated activity |
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| 🔴 Red | `error` | Critical, immediate action required |
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| 🔵 Blue | `msg` | Active mitigation in progress |
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## Brightness & I2C Timing
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The IS31FL3199 LED controller uses brightness value **100** (active) or **20** (sleep) for optimal visibility with reliable I2C timing.
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> **Important**: Uses same I2C timing values as `secubox-led-safe`:
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> - `WRITE_DELAY=0.3` — 300ms between sysfs writes
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> - `ERROR_BACKOFF=3` — 3 second wait after errors
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> - `MAX_ERRORS=5` — Stop after 5 consecutive errors
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> - `RESET_THRESHOLD=3` — Try I2C reset after 3 errors
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> - `timeout 2` — 2 second max per write (prevents I2C lockup)
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Higher values (e.g., 255) or faster timing cause I2C communication errors on Marvell Armada due to mv64xxx driver errata FE-8471889.
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## Activity Detection
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HealthBump monitors system changes and adjusts LED brightness:
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| Mode | Brightness | Condition |
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|------|------------|-----------|
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| **ACTIVE** | 100 | Metrics changed (CPU, memory, bans, or colors) |
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| **SLEEP** | 20 | System stable, no changes since last check |
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This creates a visual "breathing" effect: brighter when activity occurs, dimmer when idle.
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## K2000 Party Mode
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For boot/success announcements and alerts:
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```bash
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# K2000 sweep effect
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secubox-healthbump k2000 2 cyan # 2 cycles, cyan color
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secubox-healthbump party 1 green # 1 cycle, green
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# Success announcement (boot complete)
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secubox-healthbump success "SecuBox ready"
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secubox-healthbump boot # Alias
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# Alert (red K2000)
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secubox-healthbump alert 2 # 2 cycles red
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# Rainbow party (all colors)
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secubox-healthbump rainbow
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```
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Colors: red, orange, yellow, green, cyan, blue, purple
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## SPUNK ALERT
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When critical services (HAProxy, CrowdSec) are down, all LEDs flash rapid red:
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```
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SPUNK ALERT: HAProxy down
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```
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The alert flashes 5 times then pauses 0.5s before rechecking. This overrides
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normal health status until services recover.
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## LED Layers
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### LED1 (Bottom) - Hardware Layer `hw`
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Monitors base infrastructure health with gradient colors:
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| Resource Level | Color | Condition |
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|----------------|-------|-----------|
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| Normal | 🟢 Green | Load < 50%, Memory < 50% |
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| Medium | 🟡 Yellow-Green | Load 50-70% |
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| High | 🟠 Orange | Load 70-90% |
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| Critical | 🔴 Red | Load > 90% OR No WAN |
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### LED2 (Middle) - Services Layer `svc`
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Monitors application services and certificates:
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| Status | Color | Condition |
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|--------|-------|-----------|
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| OK | 🟢 Green | HAProxy + Nginx running, certs valid |
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| Warning | 🟡 Yellow | Certificate expiring < 30 days |
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| Error | 🔴 Red | Service stopped OR cert expired |
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### LED3 (Top) - Security Layer `sec`
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Monitors security with rate-based detection:
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| Status | Color | Condition |
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|--------|-------|-----------|
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| Clear | 🟢 Green | 0 active bans |
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| Mitigating | 🔵 Blue | Bans active, rate < 5/min |
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| Elevated | 🟡 Yellow | Rate 5-20 bans/min |
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| Attack | 🔴 Red | Rate > 20/min OR > 1000 bans |
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## Commands
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### Manual LED Control
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```bash
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# Set individual layer status
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secubox-led hw ok # Hardware: green
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secubox-led svc warn # Services: yellow
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secubox-led sec error # Security: red
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secubox-led hw msg # Hardware: blue (info)
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# Set all layers at once
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secubox-led all ok # All green
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secubox-led all off # All off
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# Layer aliases
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secubox-led 1 ok # LED1 (hw)
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secubox-led 2 warn # LED2 (svc)
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secubox-led 3 error # LED3 (sec)
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secubox-led bottom ok # Same as hw
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secubox-led middle warn # Same as svc
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secubox-led top error # Same as sec
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```
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### Automatic Health Check
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```bash
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# Run manual health check
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secubox-healthbump
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# Output examples:
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# 08:03:46 HW:[yellow:medium(50%cpu,53%mem)] SVC:[green:ok] SEC:[blue:mitigating(100 bans)]
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# 08:15:22 HW:[green:ok(12%cpu,45%mem)] SVC:[green:ok] SEC:[green:clear]
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# 08:30:01 HW:[red:no-wan] SVC:[green:ok] SEC:[yellow:elevated(50 bans,12/min)]
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```
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### Systemd Timer
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The healthbump runs automatically every 30 seconds:
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```bash
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# Check timer status
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systemctl status secubox-healthbump.timer
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# View recent runs
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journalctl -u secubox-healthbump.service --since "1 hour ago"
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# Manually trigger
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systemctl start secubox-healthbump.service
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```
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## Integration with Health Monitor
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External systems can update LED status via the `secubox-led` command:
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```bash
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# From health monitor API callback
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curl -X POST http://localhost:8080/health/callback \
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-d '{"layer": "sec", "status": "error", "reason": "Attack detected"}'
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# The API internally calls:
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secubox-led sec error
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```
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## Visual Status Examples
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### All Healthy
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```
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LED3: 🟢 Security OK
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LED2: 🟢 Services OK
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LED1: 🟢 Hardware OK
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```
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### Security Alert
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```
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LED3: 🔴 ATTACK DETECTED
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LED2: 🟢 Services OK
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LED1: 🟢 Hardware OK
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```
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### Service Degraded
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```
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LED3: 🟢 Security OK
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LED2: 🟡 Certificate expiring
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LED1: 🟢 Hardware OK
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```
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### Network Down
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```
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LED3: 🟢 Security OK
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LED2: 🟢 Services OK
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LED1: 🔴 NO WAN CONNECTION
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```
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### Information Mode
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```
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LED3: 🔵 New update available
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LED2: 🔵 Config pending
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LED1: 🟢 Hardware OK
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```
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## Files
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| File | Purpose |
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|------|---------|
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| `/usr/sbin/secubox-led-safe` | Safe LED control with I2C delays |
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| `/usr/sbin/secubox-healthbump` | 3-tier health checker (v2.0) |
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| `/etc/systemd/system/secubox-healthbump.service` | Oneshot health check unit |
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| `/etc/systemd/system/secubox-healthbump.timer` | 30s health check timer |
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| `/tmp/secubox/led-status` | Current LED status output |
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| `/tmp/secubox-ban-rate` | CrowdSec ban rate tracking |
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## Hardware
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- **Controller**: ISSI IS31FL3199 (I2C address 0x64)
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- **Bus**: I2C-1
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- **Driver**: `leds-is31fl319x` (kernel built-in)
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- **Sysfs**: `/sys/class/leds/{red,green,blue}:led{1,2,3}/`
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## Related
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- GitHub Issue #39: LED heartbeat port
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- GitHub Issue #45: IS31FL3199 driver
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- GitHub Issue #60: Kernel LED build
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- `kernel-build/README.md`: Kernel build instructions
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- `docs/reference/secubox-led-pulse-openwrt.sh`: Original OpenWrt LED script (single LED)
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---
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**CyberMind SecuBox** — https://secubox.in
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