CI/CD & deployment
Send Argo CD alerts to on-call with CallHeim.
Notifications webhook (health Degraded / sync OutOfSync). CallHeim maps the payload, collapses repeats within five minutes, and pages whoever is on call for the service it belongs to.
Setting it up
Add a webhook service to argocd-notifications-cm and subscribe apps to on-health/sync triggers.
Create an Integration in CallHeim and choose Argo CD from the Catalog. You get an ingest URL for that integration — paste it into Argo CD’s webhook configuration. The snippet beside this is the shape it expects, with {{WEBHOOK_URL}} replaced by your real URL.
If you enable request signing on this integration, CallHeim requires a valid HMAC-SHA256 signature in the X-ItOnCall-Signature or X-Hub-Signature-256 header on every request to it. Without a signing secret, the ingest URL itself is the credential.
CallHeim includes a payload mapping for Argo CD’s webhook format, built and tested against sample payloads.
# argocd-notifications-cm → service.webhook.callheim:
# url: {{WEBHOOK_URL}}
# Subscribe apps to on-health-degraded / on-sync-failed.After it arrives
What CallHeim does with Argo CD alerts.
A failing pipeline is not always a page. An Orchestration Rule can route build failures to a lower severity or a different service, and so to that service’s escalation policy, before they page.
CallHeim maps Argo CD’s own severity to a P1–P5 level and shows a separate, explainable severity suggestion — a published keyword ruleset plus your own resolved-incident history — that a person can apply. How severity is suggested →
Each alert source is bound to a service, and the service’s escalation policy (or its team’s) sets who is paged. Alerting and escalation →
CallHeim closes an incident on a recovery event only for sources whose recovery payload it recognises (or that you map). For the others, a person resolves the incident.
The thresholds it passes through
- Dedup window
- 300s
- Flap threshold
- 4 transitions / 600s
- Title correlation
- similarity ≥ 0.6, same source and service
- Group window default
- 600s
All defaults are published. You can turn title correlation off or change its threshold, and set the window on your own noise rules; the dedup window and the flap settings are fixed. How alerts are processed →
Point Argo CD at CallHeim and see what it does with your alerts.
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