Consider kpt support

[zbindenren]

kpt is a toolkit to help you manage, manipulate, customize, and apply Kubernetes Resource configuration data files.

• github
• Blog
• Documentation

[alexmt]

I would like to ask for feedback for this proposal: #5293 . The idea is that we improve config management plugins so that it provides first-class like experience. Let me know what you think please

[crenshaw-dev]

kpt config management plugin: https://github.com/bluebrown/argocd-cmp-kpt

[alexvanboxel]

Another Proof-Of-Concept: https://github.com/treactor/treactor-kpt-functions/tree/main/argo

it relies on 2 plugin's: kpt-repo that looks for a KptArgoRepo that drives the plugin to search for all Kptfile's and it will make Argo Application using annotations in the Kptfile. It's a bit app-of-apps. kpt-render just filters the config.kubernetes.io/local-config files. More detail in the README.

It's simple, but it also relies on porch to have done its job (by running the pipeline before committing to git).

[blakepettersson]

Seems like this should be possible with a CMP nowadays.

[jmgilman]

@blakepettersson One of the issues seems to be that kpt uses image containers as functions. This complicates the process of creating a CMP for it.

[crenshaw-dev]

@jmgilman does KPT support a binary mode like Kustomize does?

If we have to work with containers, I think even a built-in KPT solution is difficult.

[joebowbeer]

According to the KEP 2953: Kustomize plugin graduation:

1. Plugins can be written in any language and packaged as containers or executable scripts
2. Container and exec KRM Function plugins will continue to be supported

But according to the kpt docs, functions are containerized (only)