bpf-map-pressure-exporter

README

bpf-map-pressure-exporter

bpf-map-pressure-exporter exposes BPF map pressure.

Config

Default config file is /etc/bpf-map-pressure-exporter/config.yaml. The target BPF maps should be specified under mapNames.

mapNames:
  - cilium_ct
  - ...
fetchInterval: 30s

mapNames are interpreted as substrings of the map names and the pressure metrics for all maps including the substring are exposed. If multiple mapNames are specified and some of them match the same map, only 1 metric is exposed. Note that BPF map names are truncated to 15 characters.

fetchInterval defines the time interval to fetch BPF map pressure. bpf-map-pressure-exporter fetches the map pressure of target maps every fetchInterval and returns the latest value when scraped. Default value is 30s.

Usage

Command-line options are:

Option	Default value	Description
port	8080	port number to export metrics
config	/etc/bpf-map-pressure-exporter/config.yaml	config file path

API endpoints are:

Path	Description
/health	the path for liveness probe
/metrics	exporting metrics

Prometheus metrics

bpf-map-pressure-exporter exposes the following metrics.

bpf_map_pressure

bpf_map_pressure is a gauge that indicates the BPF map pressure.

Label	Description
map_id	ID of the BPF map
map_name	name of the BPF map