Agent improvements:
- Add reqwest dependency for HTTP latency testing
- Implement measure_site_latency() function for nginx sites
- Add latency_ms field to ServiceData structure
- Measure response times for nginx sites using HEAD requests
- Handle connection failures gracefully with 5-second timeout
- Use HTTPS for external sites, HTTP for localhost
Dashboard improvements:
- Add latency_ms field to ServiceInfo structure
- Display latency for nginx sites: "docker.cmtec.se 134ms"
- Only show latency for nginx sub-services, not other services
- Change disk usage "0" to "<1MB" for better readability
The Services widget now shows:
- Nginx sites with response times when measurable
- Cleaner disk usage formatting for small values
- Improved user experience with meaningful latency data
Agent Changes:
• Add CPU status thresholds (warning: ≥5.0, critical: ≥8.0)
• Add memory status thresholds (warning: ≥80%, critical: ≥95%)
• Add service status calculation (critical if failed>0, warning if degraded>0)
• All collectors now calculate and include status in output
Dashboard Changes:
• Update system widget to use agent-calculated cpu_status and memory_status
• Update services widget to use agent-calculated services_status
• Remove client-side status calculations in favor of agent status
• Add status_level_from_agent_status helper function
Notification System:
• Add SMTP email notification system using lettre crate
• Auto-configure notifications: hostname@cmtec.se → cm@cmtec.se
• Smart change detection with rate limiting (30min cooldown)
• Only notify on transitions to/from warning/critical states
• Rich email formatting with host, component, metric details
Replaced system-wide disk usage with accurate per-service tracking by scanning
service-specific directories. Services like sshd now correctly show minimal
disk usage instead of misleading system totals.
- Rename storage widget and add drive capacity/usage columns
- Move host display to main dashboard title for cleaner layout
- Replace separate alert displays with color-coded row highlighting
- Add per-service disk usage collection using du command
- Update services widget formatting to handle small disk values
- Restructure into workspace with dedicated agent and dashboard packages
