0013. Alertmanager Webhook URL Update¶

Status: accepted
Date: 2026-05-27
Deciders: lusoris
Related: PR #329

Context¶

The Alertmanager ntfy and ntfy-and-triage receivers used the DNS name ntfy-app.infra.svc.cluster.local, but the service was named ntfy. The referenced change records that critical and warning notifications were therefore sent to a non-existent service name.

Decision¶

Change both Alertmanager ntfy webhook targets to http://ntfy.infra.svc.cluster.local/alertmanager.

Alternatives considered¶

None recorded at decision time; documented retroactively.

Consequences¶

Both webhook configurations in argocd-apps/monitoring/kube-prometheus-stack.yaml now address the ntfy Service rather than ntfy-app.

References¶

PR #329 — fix(monitoring): alertmanager → ntfy webhook URL (was hitting non-existent ntfy-app service)