Argocd application resource stuck at deletion

Question

I've started experimenting with Argocd as part of my cluster setup and set it up to watch a test repo containing some yaml files for a small application I wanted to use for the experiment. While getting to know the system a bit, I broke the repo connection and instead of fixing it I decided that I had what I wanted, and decided to do a clean install with the intention of configuring it towards my actual project.

I pressed the button in the web UI for deleting the application, which got stuck. After which I read that adding spec.syncPolicy.allowEmpty: true and removing the metadata.finalizers declaration from the application yaml file. This did not allow me to remove the application resource.

I then ran an uninstall command with the official manifests/install.yaml as an argument, which cleaned up most resources installed, but left the application resource and the namespace. Command: kubectl delete -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

Have tried to use the kubectl delete application NAME --force flag and the --cascade=orphans flag on the application resource as well as on the argocd namespace itself. Now I have both of them stuck at terminating without getting any further.

Now I'm proper stuck as I can't reinstall the argocd in any way I know due to the resources and namespace being marked for deletion, and I'm at my wits end as to what else I can try in order to get rid of the dangling application resource.

Any and all suggestions as to what to look into is much appreciated.

Answer 1

It appears that you're encountering difficulties removing a dangling application resource in Argocd. To address this issue, you can follow these steps:

1. Ensure Finalizer Unset: Verify that the finalizer is successfully unset for the application resource. You can achieve this by running the following command:

Replace APP_NAME/CRD_NAME with the name of your application or the resource you have problem with.

kubectl patch app APP_NAME -p '{"metadata": {"finalizers": null}}' --type merge
kubectl patch crd CRD_NAME -p '{"metadata": {"finalizers": null}}' --type merge

Delete the Application: Once the finalizer has been unset, you can proceed to delete the application resource using the following command: shell

kubectl delete app APP_NAME
kubectl delete crd CRD_NAME

Answer 2

I've found that using the following commands help greatly...

kubectl api-resources --verbs=list --namespaced -o name | \
   xargs -n 1 kubectl get --show-kind \
   --ignore-not-found -n <namespace>
kubectl api-resources -n <namespace> | grep argo | grep ...

...help greatly to identify the resources that are "stuck".

Then you have to either use some awk to generate delete or delete --all to "prune" the resources. If some get stuck, then you have to resort to editing them to remove the finalisers so that they can then be deleted.

It can get ugly, but awk and printf combinations can help