# Introduction to Kinuxota OTA

Kinuxota is a comprehensive Over-The-Air (OTA) update system designed for IoT devices, consisting of two main components:

## System Overview

Kinuxota OTA provides a complete solution for managing IoT devices, enabling remote updates, command execution, and monitoring. The system consists of:

1. **Client**: A C++ library that runs on IoT devices to handle updates and commands
2. **Web Dashboard**: A web application for managing devices, updates, and commands

## Key Features

### Device Management
- Register and manage IoT devices
- Monitor device status and health metrics
- Organize devices into groups for bulk operations

### Command Execution
- Send commands to individual devices or groups
- View command execution results in real-time
- Schedule commands for future execution

### Script Management
- Create and deploy scripts to devices
- Execute scripts remotely
- Monitor script execution and results

### Package Management
- View installed packages on devices
- Install, update, and remove packages remotely
- Track package versions across your device fleet

### OTA Updates
- Deploy firmware updates to devices
- Monitor update progress
- Schedule updates for maintenance windows

## System Architecture

### Client
The client component is a C++ library that runs on IoT devices and provides:
- Device registration and authentication
- Command execution
- OTA update functionality
- Package management
- Health monitoring
- Logging

### Web Dashboard
The web dashboard is a full-stack web application that provides:
- User interface for managing devices
- GraphQL API for frontend communication
- REST API for device communication
- MQTT broker for real-time messaging

The Web Dashboard offers the following capabilities:
- User Registration and Login
- Dashboard Overview
- Device Management
- Script Management
- Package Management
- Command Execution
- User Settings and Account Management

## Communication Protocols
Kinuxota uses a hybrid communication approach:

- **MQTT**: For real-time command reception, status updates, and event notifications
- **HTTP**: For device authentication, registration, update checking, and fallback communication

## Security Model
Kinuxota implements a robust security model:

- **User Authentication**: JWT-based authentication for dashboard users
- **Device Authentication**: API key-based authentication for devices
- **HTTPS**: Secure communication between devices and the server
- **MQTT Security**: Authentication and optional TLS encryption for MQTT communication