Macha - AI-Powered Autonomous System Administrator

Macha is an AI-powered autonomous system administrator for NixOS that monitors system health, diagnoses issues, and can take corrective actions with appropriate approval workflows.

Features

• Autonomous Monitoring: Continuous health checks with configurable intervals
• Multi-Host Management: SSH-based management of multiple NixOS hosts
• Tool Calling: Comprehensive system administration tools via Ollama LLM
• Queue-Based Architecture: Serialized LLM requests to prevent resource contention
• Knowledge Base: ChromaDB-backed learning system for operational wisdom
• Approval Workflows: Safety-first approach with configurable autonomy levels
• Notification System: Gotify integration for alerts

Quick Start

As a NixOS Flake Input

Add to your flake.nix:

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    macha-autonomous.url = "git+https://git.coven.systems/lily/macha-autonomous";
  };

  outputs = { self, nixpkgs, macha-autonomous }: {
    nixosConfigurations.yourhost = nixpkgs.lib.nixosSystem {
      modules = [
        macha-autonomous.nixosModules.default
        {
          services.macha-autonomous = {
            enable = true;
            autonomyLevel = "suggest";  # observe, suggest, auto-safe, auto-full
            checkInterval = 300;
            ollamaHost = "http://localhost:11434";
            model = "gpt-oss:latest";
          };
        }
      ];
    };
  };
}

Configuration Options

See module.nix for full configuration options including:

• Autonomy levels (observe, suggest, auto-safe, auto-full)
• Check intervals
• Ollama host and model settings
• Git repository monitoring
• Service user/group configuration

CLI Tools

• macha-chat - Interactive chat interface
• macha-ask - Single-question interface
• macha-check - Trigger immediate health check
• macha-approve - Approve pending actions
• macha-logs - View service logs
• macha-issues - Query issue database
• macha-knowledge - Query knowledge base
• macha-systems - List managed systems
• macha-notify - Send Gotify notification

Architecture

• Agent: Core AI logic with tool calling
• Orchestrator: Main monitoring loop
• Executor: Safe action execution
• Queue System: Serialized Ollama requests with priorities
• Context DB: ChromaDB for system context and learning
• Tools: System administration capabilities

Requirements

• NixOS with flakes enabled
• Ollama service running
• Python 3 with requests, psutil, chromadb

Documentation

See DESIGN.md for comprehensive architecture documentation.

License

[Add your license here]

Author

Lily Miller