AlertManager Query (API v2)

Query Prometheus-compatible AlertManager HTTP API v2 directly via curl. Covers alert listing with filters, silence management (list, create, get, delete), and alert state inspection.

Availability Warning

AlertManager runs as an in-cluster pod and may be unavailable (crashloop, DNS failure, not deployed locally). Always check connectivity first. When AlertManager is down, fall back to VictoriaMetrics for alert data:

# Fallback: firing/pending alerts from VictoriaMetrics (always available)
curl -s ${VM_AUTH_HEADER:+-H} ${VM_AUTH_HEADER:+"$VM_AUTH_HEADER"} \
  "$VM_METRICS_URL/api/v1/alerts" | jq '.data.alerts[]'

AlertManager provides what VM alerts cannot: silences, inhibition state, and alert routing.

Environment