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ArgoCD › Sync & Health

How do notifications work for sync and health events?

Intermediate

Answer

The Argo CD Notifications controller (now built-in) sends alerts to Slack, email, Teams, webhooks, etc., based on triggers (e.g., on-sync-failed, on-health-degraded) and templates. You configure triggers/templates in a ConfigMap and subscribe apps via annotations, enabling proactive alerting on failures or drift.
metadata:
  annotations:
    notifications.argoproj.io/subscribe.on-health-degraded.slack: my-channel
Real-world example When an app goes Degraded, the team gets a Slack alert immediately via the notifications controller.

Common follow-ups: What triggers are available? | How do you subscribe an app to notifications?

Applications Sync & Health RBAC
All 29 Sync & Health questions