Disk Exporter Metrics

This page documents Prometheus metrics collected by the Disk Exporter, which reports on local disk usage across mounted volumes and Yellowbrick-specific data directories.

Purpose

These metrics are used to monitor disk space consumption across the system, including:

• Overall disk usage per mounted path
• Specific usage of level-1 storage areas (e.g., rowstore, staging files)

They are essential for capacity planning, proactive alerting, and detecting abnormal disk growth due to unflushed data or log buildup.

Metrics

Name	Type	Freq	Labels	Description
node_disk_usage_bytes	gauge	10s	path	Disk usage in bytes per mount
node_disk_usage_level_1_bytes	gauge	10s	path	Disk usage of level-1 files (e.g., rowstore)