Exporters: node-exporter and cAdvisor

11 min
Audience
beginner, lessons 01 and 02 read
Duration
35 to 45 min
Module
2/7
Target skill
read the machine's metrics (node_cpu_seconds_total, node_memory_*, node_filesystem_*) and those of each labo-* container (container_cpu_usage_seconds_total, container_memory_working_set_bytes), know what an exporter translates and what it does not see

In one picture

The meter reader can only read a meter that has a dial. The catalog API has one: it was written with prometheus_client, it exposes /metrics itself. The Linux kernel, on the other hand, has no dial: it writes its statistics in /proc and /sys, in a format Prometheus does not read. Neither does Docker: it knows each container's consumption, but does not expose it in Prometheus format.

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This lesson is part of the “Metrics: Prometheus end-to-end” module

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