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Prometheus Metrics
NetBox supports optionally exposing native Prometheus metrics from the application. Prometheus is a popular time series metric platform used for monitoring.
NetBox exposes metrics at the /metrics HTTP endpoint, e.g. https://netbox.local/metrics. Metric exposition can be toggled with the METRICS_ENABLED configuration setting. Metrics are not exposed by default.
Metric Types
NetBox makes use of the django-prometheus library to export a number of different types of metrics, including:
- Per model insert, update, and delete counters
- Per view request counters
- Per view request latency histograms
- Request body size histograms
- Response body size histograms
- Response code counters
- Database connection, execution, and error counters
- Cache hit, miss, and invalidation counters
- Django middleware latency histograms
- Other Django related metadata metrics
For the exhaustive list of exposed metrics, visit the /metrics endpoint on your NetBox instance.
Multi Processing Notes
When deploying NetBox in a multiprocess mannor--such as using Gunicorn as recomented in the installation docs--the Prometheus client library requires the use of a shared directory
to collect metrics from all the worker processes. This can be any arbitrary directory to which the processes have read/write access. This directory is then made available by use of the
prometheus_multiproc_dir environment variable.
This can be setup by first creating a shared directory and then adding this line (with the appropriate directory) to the [program:netbox] section of the supervisor config file.
environment=prometheus_multiproc_dir=/tmp/prometheus_metrics