Overview
Alertmanager is the official alert-routing component of the Prometheus ecosystem. It receives alerts from Prometheus servers, deduplicates and groups them, applies silences, and routes notifications to receivers like email, Slack, PagerDuty, and webhooks. It is a single Go binary and an essential complement to any Prometheus deployment.
Where it falls short of Datadog
- No built-in dashboard; must pair with Grafana or a similar UI
- Configuration is file-based YAML with no graphical editor
- High-availability clustering requires careful setup
We list the gaps honestly so you can decide if the trade-off is worth owning your data.
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