The stub answered every absolute name, so a guard that asked for the
backend twice and never for the exporter passed both tests. The stub now
records the names it is asked for, and the tests require the backend and
the exporter.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
nginx resolves its upstreams once, at start, so the frontend starts through
a guard that waits until `backend` and `exporter` resolve. A container
resolves with a search domain, and the zone of a deployment answers every
name with the address of the ingress. A service that Docker's DNS did not
know yet therefore resolved anyway, as `backend.<domain>`. The guard let
nginx start at once and nginx pinned the ingress as its backend. Every API
call then failed with 502 and the SPA showed "Bad Gateway" instead of the
login form, until the container was restarted.
The guard now asks for the absolute names, `backend.` and `exporter.`. The
search domain is not applied to those, so the lookup fails until the
services themselves resolve.
Closes#806
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
kevinveenbirkenbachandClaude Opus 5.5