Prometheus Metrics

O.D.I.N. exposes a Prometheus-compatible /metrics endpoint. Scrape it with Prometheus and build Grafana dashboards for fleet telemetry, job throughput, and spool inventory.

Overview

The metrics endpoint returns all metrics in the standard Prometheus text exposition format (text/plain, version 0.0.4). A viewer role or API key is required.

GET /api/metrics

Available Metrics

Metric names verified from the O.D.I.N. source:

Metric Name	Type	Description
`odin_printers_total`	Gauge	Total registered active printers
`odin_printers_online`	Gauge	Printers seen in the last 90 seconds
`odin_printers_printing`	Gauge	Printers currently in RUNNING or PREPARE state
`odin_printers_idle`	Gauge	Online printers with no active job
`odin_printers_error`	Gauge	Online printers in FAILED or UNKNOWN state
`odin_printer_nozzle_temp_celsius`	Gauge	Current nozzle temperature per printer (labels: `printer`, `printer_id`)
`odin_printer_bed_temp_celsius`	Gauge	Current bed temperature per printer
`odin_printer_progress`	Gauge	Print progress 0–100 per printer
`odin_printer_print_hours_total`	Counter	Lifetime print hours per printer
`odin_printer_print_count_total`	Counter	Lifetime print count per printer
`odin_jobs_by_status`	Gauge	Job count per status (label: `status`)
`odin_queue_depth`	Gauge	Jobs in pending, scheduled, or submitted state
`odin_spools_total`	Gauge	Total tracked spools with weight data
`odin_spools_low`	Gauge	Spools with less than 100g remaining
`odin_orders_by_status`	Gauge	Order count per status (label: `status`)
`odin_alerts_unread`	Gauge	Total unread alerts

Per-printer metrics include printer (name) and printer_id labels for filtering.

Prometheus Configuration

Add O.D.I.N. as a scrape target in your prometheus.yml:

scrape_configs:
  - job_name: 'odin'
    scrape_interval: 15s
    static_configs:
      - targets: ['your-odin-host:8000']
    metrics_path: '/api/metrics'
    # If using API key authentication:
    authorization:
      type: Bearer
      credentials: 'your-scoped-api-token'
    # Or use basic auth:
    # basic_auth:
    #   username: 'admin'
    #   password: 'your-password'

15-Second Scrape Interval Recommended

The default O.D.I.N. telemetry update rate is approximately 15–30 seconds depending on the printer protocol. Scraping more frequently than 15s will not yield faster data; it only increases load on the SQLite database. A 15-second interval is the recommended minimum.

Grafana Dashboard Setup

Add Prometheus Data Source

In Grafana, go to Configuration → Data Sources → Add data source
Select Prometheus
Set the URL to your Prometheus instance (e.g., http://prometheus:9090)
Click Save & Test

Example Panels

Fleet Status (Stat panels):

odin_printers_online — Online Printers
odin_printers_printing — Currently Printing
odin_queue_depth — Queue Depth

Per-Printer Temperature Graph:

odin_printer_nozzle_temp_celsius

Use the printer label to split by printer.

Job Completion Rate:

rate(odin_printer_print_count_total[1h])

Low Spool Alert:

odin_spools_low > 0

Overview​

Available Metrics​

Prometheus Configuration​

Grafana Dashboard Setup​

Add Prometheus Data Source​

Example Panels​

See Also​