Endpoints not ignored by ArgoCD Application Controller

[sidewinder12s]

Checklist:

• I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• I've included steps to reproduce the bug.
• I've pasted the output of argocd version.

Describe the bug

The resource exclusion docs seem to indicate that Endpoints should be excluded/not presented and tracked in ArgoCD: https://argo-cd.readthedocs.io/en/stable/operator-manual/declarative-setup/#resource-exclusioninclusion

I am still seeing them in our ArgoCD UI however.

I've generally been chasing down Application controller perf issues that seem to be rooted in extremely active clusters cause excessive reconciliation triggering. A few of the items that seem to trigger it are Endpoints, EndpointSlices, DaemonSet updates largely driven by cluster autoscaling.

To Reproduce

Deploy a service with endpoints, check UI for endpoints object

Expected behavior

Services should not be tracking the endpoint object.

It appears adding endpoints explicitly to resource.exclusions has them ignored by ArgoCD.

Screenshots

Version

argocd: v2.7.14+a40c95a
  BuildDate: 2023-09-07T17:39:29Z
  GitCommit: a40c95a6383baa0d9f670586a5c295021f59337c
  GitTreeState: clean
  GoVersion: go1.19.12
  Compiler: gc
  Platform: linux/amd64
argocd-server: v2.7.14+a40c95a.dirty
  BuildDate: 2023-09-07T16:50:47Z
  GitCommit: a40c95a6383baa0d9f670586a5c295021f59337c
  GitTreeState: dirty
  GoVersion: go1.19.10
  Compiler: gc
  Platform: linux/arm64
  Kustomize Version: v5.0.1 2023-03-14T01:32:48Z
  Helm Version: v3.11.2+g912ebc1
  Kubectl Version: v0.24.2
  Jsonnet Version: v0.19.1

References:

argoproj/gitops-engine#469
#8175

[agaudreault]

Added to 3.0 milestone with #20013 to change the default configurable settings. The current behavior is expected not to exclude Endpoints by default, but doc was not up-to-date.