argo-cd/docs/user-guide/annotations-and-labels.md

Annotations and Labels used by Argo CD

Annotations

Annotation key	Target resource(es)	Possible values	Description
argocd.argoproj.io/application-set-refresh	ApplicationSet	"true"	Added when an ApplicationSet is requested to be refreshed by a webhook. The ApplicationSet controller will remove this annotation at the end of reconciliation.
argocd.argoproj.io/compare-options	any	see compare options docs	Configures how an app's current state is compared to its desired state.
argocd.argoproj.io/hook	any	see resource hooks docs	Used to configure resource hooks.
argocd.argoproj.io/hook-delete-policy	any	see resource hooks docs	Used to set a resource hook's deletion policy.
argocd.argoproj.io/manifest-generate-paths	Application	see scaling docs	Used to avoid unnecessary Application refreshes, especially in mono-repos.
argocd.argoproj.io/refresh	Application	normal, hard	Indicates that app needs to be refreshed. Removed by application controller after app is refreshed. Value "hard" means manifest cache and target cluster state cache should be invalidated before refresh.
argocd.argoproj.io/skip-reconcile	Application	"true"	Indicates to the Argo CD application controller that the Application should not be reconciled. See the skip reconcile documentation for use cases.
argocd.argoproj.io/sync-options	any	see sync options docs	Provides a variety of settings to determine how an Application's resources are synced.
argocd.argoproj.io/sync-wave	any	see sync waves docs
argocd.argoproj.io/tracking-id	any	any	Used by Argo CD to track resources it manages. See resource tracking docs for details.
argocd.argoproj.io/ignore-resource-updates	any	"true", false	Used by Argo CD to ignore resource updates. See reconcile docsreconcile_docs for details.
link.argocd.argoproj.io/{some link name}	any	An http(s) URL	Adds a link to the Argo CD UI for the resource. See external URL docs for details.
pref.argocd.argoproj.io/default-pod-sort	Application	see UI customization docs	Sets the Application's default grouping mechanism.
pref.argocd.argoproj.io/default-view	Application	see UI customization docs	Sets the Application's default view mode (e.g. "tree" or "list")

Labels

Label key	Target resource(es)	Possible values	Description
argocd.argoproj.io/instance	Application	any	Recommended tracking label to avoid conflicts with other tools which use app.kubernetes.io/instance.
argocd.argoproj.io/secret-type	Secret	cluster, repository, repo-creds, scm-creds	Identifies certain types of Secrets used by Argo CD. See the Declarative Setup docs for details about the first three, and AppSet-in-any-namespace docs for the last one.