Document how to configure the namespace per user strategy

[sunix]

Is your task related to a problem? Please describe.

It looks like the kubernetes namespace per user strategy is not set by default in non Openshift installation.

See: #18381

We should document how to configure the namespace per user strategy.

https://www.eclipse.org/che/docs/che-7/installation-guide/configuring-namespace-strategies/

Describe the solution you'd like

I don't think so and I agree that this should be at least documented. Something like "if you want to have namespace per user strategy, grant these cluster permissions ClusterRole blablabla to che SA and set server.workspaceNamespaceDefault:'che-<username>'"...

[yhontyk]

Docs Jira issue https://issues.redhat.com/browse/RHDEVDOCS-2573

[themr0c]

@sunix Is the issue still relevant?

[sunix]

@themr0c I don't know, I have an existing installation, workspaces are all running in the same namespace and not sure what is the procedure to fix it.

[yhontyk]

@sunix
@sparkoo has added some documentation in this PR eclipse-che/che-docs#1747
Here it is on the website, PTAL https://www.eclipse.org/che/docs/che-7/installation-guide/configuring-namespace-strategies/#_one_namespace_per_user_strategy

Is this sufficient or needs to be expanded?

[sunix]

Thanks @boczkowska
I will try to update my own che cluster to see if this is OK. Closing for now, will open a new one if I have any issue.

[sunix]

Just a question @sparkoo :

(first paragraph of https://www.eclipse.org/che/docs/che-7/installation-guide/configuring-namespace-strategies/)

By default, every workspace is deployed in a distinct Kubernetes namespace or OpenShift project,

I thought the default was 1 namespace per user ?

[sparkoo]

@sunix I can see the changeset comes in this PR eclipse-che/che-docs#1741, so it's better to ask @themr0c. I know that 1 namespace per user is the desired default, but I'm not sure it's default for all deployments. TBH I've lost a track. Maybe @tolusha can tell if all deployments has default 1ns/user ?

[skabashnyuk]

Already implemented