## System Metrics Collection
- Add SystemMetrics module with CPU, memory, disk, and system info collection
- Integrate Erlang :os_mon application (cpu_sup, memsup, disksup)
- Collect and format active system alarms with structured JSON output
- Replace simple "Hello" messages with rich system data in MQTT payloads
## MQTT Integration
- Update MqttClient to publish comprehensive metrics every 30 seconds
- Add :os_mon to application dependencies for system monitoring
- Maintain backward compatibility with existing dashboard consumption
## Documentation Updates
- Update CLAUDE.md with Phase 1 completion status and implementation details
- Completely rewrite README.md to reflect current project capabilities
- Document alarm format, architecture, and development workflow
## Technical Improvements
- Graceful error handling for metrics collection failures
- Clean alarm formatting: {severity, path/details, id}
- Dashboard automatically receives and displays real-time system data and alerts
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Co-Authored-By: Claude <noreply@anthropic.com>
- Replace SimpleMqtt simulation with real MqttSubscriber
- Fix String.split bug when handling MQTT topic parsing
- Use hostname-based client ID to avoid MQTT client conflicts
- Add process management tools (hivemind, just) to development environment
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Co-Authored-By: Claude <noreply@anthropic.com>
Features:
- MQTT subscriber GenServer connects to mqtt.home
- Real-time host discovery via systant/+/stats topic
- LiveView with Phoenix PubSub for instant updates
- Host cards showing live data and last seen timestamps
- Clean UI with Tailwind styling
- Proper OTP supervision tree
Dashboard ready to receive live data from systant hosts!
Visit /hosts to see real-time monitoring.
- Remove home-assistant-integration/ and dev-config/
- Remove Python/HA dependencies from flake.nix
- Add Phoenix LiveView dashboard with clean Elixir-only stack
- Add Node.js and PostgreSQL for Phoenix development
- Much cleaner monorepo architecture focusing on Elixir ecosystem
Next: Connect dashboard to MQTT for real-time host monitoring
- Remove frontend dependencies that aren't in Nix package
- Use minimal config with just HTTP, API, and MQTT
- Prepare for either Docker alternative or core-only testing
- Remove mosquitto from flake (use existing broker)
- Point dev config to mqtt.home instead of localhost
- Cleaner setup using your existing MQTT infrastructure
- Add home-assistant and mosquitto to dev shell
- Create minimal dev-config/ for HA development instance
- Symlink custom integration for easy testing
- Add HA dev files to .gitignore
- No HA codebase committed, just references via Nix
Usage:
nix develop
hass --config ./dev-config
Features:
- Isolated from production HA instance
- MQTT broker for testing
- Debug logging enabled
- In-memory database for fast iteration
- Create basic integration structure with manifest.json
- Add config flow for easy setup via UI
- Implement MQTT-based host discovery and sensor creation
- Auto-discover Systant hosts via systant/+/stats topic
- Create device entities with last_seen sensor for each host
- Add Python tooling to flake.nix for HA development
Integration features:
- Automatic host discovery via MQTT
- Device representation for each monitored host
- Extensible sensor architecture
- Proper Home Assistant integration patterns
- Remove dummy COOKIE file creation (doesn't work in Nix store)
- Set RELEASE_COOKIE env var in wrapper script instead
- This follows NixOS best practices for Elixir releases
- Remove server/_build/ and server/deps/ from git tracking
- Update .gitignore to properly ignore server build directories
- These directories caused symlink conflicts in Nix build
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Move Elixir code to server/ subdirectory for monorepo structure
- Update flake.nix to provide packages and apps outputs for nix run support
- Update nix/package.nix to accept src parameter instead of fetchgit
- Add NixOS module export for easy consumption
Now supports: nix run, nix build, and nix develop from git repo
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Move Nix package and module to nix/ directory for better organization
- Remove old Nix files (systant.nix, systant-old.nix, etc.)
- Remove debug script and systemd service file
- Update config files for new Nix structure
- Add CLAUDE.md with project documentation
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Topics now default to systant/{hostname}/stats and systant/{hostname}/commands
- Runtime config automatically includes system hostname in topics
- NixOS module defaults use config.networking.hostName
- Supports multiple hosts without topic conflicts
- Environment variables can still override if needed
Example: systant/orion/stats, systant/server2/stats, etc.
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Co-Authored-By: Claude <noreply@anthropic.com>
Set RELEASE_COOKIE environment variable directly in systemd service
to prevent startup script from trying to read non-existent COOKIE file.
The environment variable takes precedence over file reading.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Remove explicit cookie configuration from release
- Set RELEASE_DISTRIBUTION=none and RELEASE_NODE=nonode@nohost
- Simplify Nix derivation by removing postInstall hooks
- Single standalone daemon doesn't need Erlang node clustering
Fixes persistent COOKIE file issues in Nix builds.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add postInstall hook to ensure COOKIE file exists
- Include ERTS and disable beam stripping in release config
- Handle mixRelease differences from local builds
This ensures the Elixir release works properly when built via Nix.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Updated all module names from SystemStatsDaemon to Systant
- Renamed application config from :system_stats_daemon to :systant
- Updated service files and documentation
- Release binary now at _build/prod/rel/systant/bin/systant
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- MQTT client with configurable broker connection
- Periodic system stats publishing (30s interval)
- Command listening on MQTT topic with logging
- Systemd service configuration
- NixOS module for declarative deployment
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
