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More in Sync Waves & Hooks
What is a Skip hook and when is it used? How are hook resources named and prevented from clashing across syncs? How long does ArgoCD wait between sync waves? What is a PreSync hook typically used for? Can hooks use sync waves to order among themselves? How do you notify an external system after a successful deployment using hooks? How do you seed initial data on first deployment only? How do hooks differ from plain resources with sync waves, and when do you choose each? How do you order a multi-tier application deployment with waves? How do you run post-deployment smoke tests and fail the sync if they fail?
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ArgoCD › Sync Waves & Hooks

What is a PostSync hook typically used for?

Intermediate

Answer

PostSync hooks run after all resources are applied and Healthy—used for smoke tests, cache warming, notifications, or registering the deployment. A failing PostSync hook marks the sync failed, signaling the release didn't pass its post-checks.
metadata:
  annotations:
    argocd.argoproj.io/hook: PostSync
Real-world example A PostSync integration-test Job verifies the new version works end-to-end after deployment.

Common follow-ups: When does PostSync run relative to health? | What does a PostSync failure indicate?

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All 29 Sync Waves & Hooks questions