Self-Hosted ntfy Removed an External Delivery Dependency
The alert sink originally targeted a public ntfy service, which made production notification depend on infrastructure outside the hserver control boundary.
ntfy
Notification Authentication Belongs Outside Git
Moving alert delivery to authenticated self-hosted ntfy introduced a publisher token that the alert-sink needs at runtime.
Notification Endpoint Health Needs Direct Monitoring
Delivery counters only change when an alert is sent, so a quiet system could leave a dead notification service unnoticed for hours.
Monitor Notification Success, Failure and Resolution Separately
An alert can fire correctly and still never reach the operator if Alertmanager or the external delivery path fails.