ConfigMap/argocd-notifications-cm is empty in default install. Should be filled official template instead for out-of-box-experience.

[kazuki-ma]

Summary

Add default notification template to install manifest.

Motivation

When I tried setup notifications, I noticed argocd-notifications-cm is exist by default but it's empty.
Yes. It's well documented in getting-started. But I see no particular reason to install manually.

And, more importantly, empty configMap is contained in default install.yaml manifest.

That means notifications-cm will be easily reset to empty by operation mistake (like update ArgoCD by upsert install manifest)

Proposal

Add notification templates into default install manifest.
(or remove empty argocd-notifications-cm from install manifest.)

[andrii-korotkov-verkada]

I think it used to be like this, but was changed. My understanding is there's simply no catch-all notification template due to many notifications methods used. You can create an overlay with copying some from notifications catalog.