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.
If your problem is that the namespace cannot be deleted, the following two solutions may help you：
Hopefully it helped you.