- Add get_git_commit() method to read /var/lib/cm-dashboard/git-commit
- Replace NixOS build version with actual git commit hash
- Show deployed commit hash as 'Build:' value for accurate tracking
- Enable verification of which exact commit is deployed per host
- Update version to 0.1.42
- Fix /tmp usage status to use proper thresholds instead of hardcoded Ok status
- Fix wear level status to use configurable thresholds instead of hardcoded values
- Add dedicated tmp_status field to SystemWidget for proper /tmp status display
- Remove host-level hourglass icon during service operations
- Implement immediate service status updates after start/stop/restart commands
- Remove active users display and collection from NixOS section
- Fix immediate host status aggregation transmission to dashboard
Major architectural improvements:
CORE CHANGES:
- Remove notification_interval_seconds - status aggregation now immediate
- Status calculation moved to collection phase instead of transmission
- Event-driven transmission triggers immediately on status changes
- Dual transmission strategy: immediate on change + periodic backup
- Real-time notifications without batching delays
TECHNICAL IMPROVEMENTS:
- process_metric() now returns bool indicating status change
- Immediate ZMQ broadcast when status changes detected
- Status aggregation happens during metric collection, not later
- Legacy get_nixos_build_info() method removed (unused)
- All compilation warnings fixed
BEHAVIOR CHANGES:
- Critical alerts sent instantly instead of waiting for intervals
- Dashboard receives real-time status updates
- Notifications triggered immediately on status transitions
- Backup periodic transmission every 1s ensures heartbeat
This provides much more responsive monitoring with instant alerting
while maintaining the reliability of periodic transmission as backup.
- Implement per-collector interval timing respecting NixOS config
- Remove all hardcoded timeout/interval values and make configurable
- Add tmux session requirement check for TUI mode (bypassed for headless)
- Update agent to send config hash in Build field instead of nixos version
- Add nginx check interval, HTTP timeouts, and ZMQ transmission interval configs
- Update NixOS configuration with new configurable values
Breaking changes:
- Build field now shows nix store config hash (8 chars) instead of nixos version
- All intervals now follow individual collector configuration instead of global
New configuration fields:
- systemd.nginx_check_interval_seconds
- systemd.http_timeout_seconds
- systemd.http_connect_timeout_seconds
- zmq.transmission_interval_seconds
- Replace git commit hash with nix store hash extraction
- Read from /run/current-system symlink target
- Extract first 8 characters of nix store hash: d8ivwiar
- Shows actual deployed configuration, not just source
- Enables proper rebuild completion detection
- Accurate deployment verification
Implement agent version tracking to diagnose deployment issues:
- Add get_agent_hash() method to extract Nix store hash from executable path
- Collect system_agent_hash metric in NixOS collector
- Display "Agent Hash" in system panel under NixOS section
- Update metric filtering to include agent hash
This helps identify which version of the agent is actually running
when troubleshooting deployment or metric collection issues.
- Strip codename part (e.g., '(Warbler)') from nixos-version output
- Display clean version format: '25.05.20251004.3bcc93c'
- Simplify parsing to use raw nixos-version output as requested
- Change from showing version to build format: 'hash dd/mm/yy H:M:S'
- Parse nixos-version output to extract short hash and format date
- Update system widget to display 'Build:' instead of 'Version:'
- Remove version/build_date fields in favor of single build string
- Follow TODO.md specification for NixOS section layout
- Create NixOS collector for version and active users detection
- Add SystemWidget combining all system information in TODO.md layout
- Replace separate CPU/Memory widgets with unified system display
- Add tree structure for storage with drive temperature/wear info
- Support NixOS version, active users, load averages, memory usage
- Follow exact decimal formatting from specification
