Zero-to-jupyterhub-k8s: Defining a namespace in yaml?

[consideRatio]

Can it make sense for us to define a namespace in yamlfiles? Hmm... Eh... It would allow our values.yaml to name the namespace...

I realized that possibility by watching this video but I figure there will be a one or multiple issues with this... But what would they be?

[manics]

What's the advantage over defining it on the helm command line?

[yuvipanda]

You need to provide it on the commandline to helm commands regardless. If you look at the kubernetes API reference, you'll see almost all calls have the {namespace} in the URL itself. So helm does need to know about the namespace your objects are going to be in in the commandline.

Hence there are no advantages.

It also has a disadvantage, which is that regular helm tooling won't work. For example, if you do a helm install on a namespace that doesn't exist, Helm will create it for you & order things appropriately, since it knows about namespaces. Lots of tools that wrap helm also rely on the standardized `--namespace`` flag to helm commands, and this would break their assumption. Finally, there might be RBAC issues - maybe the tiller SA only has rights to create objects in a namespace, but not a namespace itself (this is fairly common). I'm sure there are other reasons :)

Thank you for thinking about it, @consideRatio. I hope this explanation was useful (and correct!!! :D)

[consideRatio]

@manics @yuvipanda Thanks for helping me process this!!!