postgres_exporter

Reads the postgres_exporter_build_info gauge off /metrics — the prometheus/common “version collector” every Prometheus exporter in this ecosystem exposes the same way (a constant 1, with the version in a label, not the value). product: postgres-exporter is accepted as an alias.

targets:
  - id: postgres-exporter-main
    product: postgres_exporter
    address: https://exporter.example.com:9187

Authentication

Optional — /metrics needs no credentials by default and answers even when the target PostgreSQL itself is unreachable (build_info describes the exporter binary, not the database it scrapes). exporter-toolkit (the library behind --web.config.file) can add HTTP Basic to this endpoint:

credentials:
  postgres-exporter-basic:
    kind: basic
    username: metrics
    password: "${EXPORTER_PASSWORD}"

Recorded fields

Only version — this probe records no extra fields.

Lifecycle resolver

github:prometheus-community/postgres_exporter — this is a Prometheus exporter, not a product with a lifecycle/EOL policy of its own, so it resolves against GitHub Releases: the latest published, non-prerelease tag only, with no eol/support/lts dates.