HAProxy

Reads the version out of HAProxy’s own stats page heading — HAProxy has no version endpoint and, unlike nginx, sets no Server header identifying itself at all by default.

targets:
  - id: haproxy-main
    product: haproxy
    address: https://haproxy.example.com

/stats is this probe’s default path — set path: explicitly only if your stats page is mounted somewhere else.

The stats page must be enabled

Confirmed live against a real haproxy:3.0 container: the stats page (stats enable in HAProxy’s own config; not on by default) is the only anonymous surface that carries a version at all — the ;csv stats export has no version column anywhere in its ~140-column header, so this probe reads the HTML form specifically.

Authentication

Optional. stats auth user:pass (HAProxy’s own config directive for this page) is ordinary HTTP Basic:

credentials:
  haproxy-stats:
    kind: basic
    username: admin
    password: "${HAPROXY_STATS_PASSWORD}"

Recorded fields

Only version — this probe records no extra fields.

Lifecycle resolver

endoflife:haproxy.