warn when kolibri is not run as the `kolibri` user and we expect it to be

Observed behavior

(Kolibri repo work for https://github.com/learningequality/kolibri-installer-debian/issues/41)

When installed using the .deb package, a new kolibri user is created and its this user which runs the Kolibri process when the system service is started.

However we run into problems when users run kolibri commands via the command line because the local process has a different KOLIBRI_HOME folder than the service process.

Expected behavior

• We should warn when the process is run as a separate user and the kolibri user exists. This can roughly follow the implementation in KA Lite.
• We should update the documentation to clarify that when installed as debian, commands should be run as sudo service kolibri [command], not kolibri [command]
• We should consider not adding kolibri to the path so users can’t make this mistake. (Why is it on the path?)

User-facing consequences

Lots of confusion and sometimes broken installations

Steps to reproduce

Install as a debian package and then run commands as a normal user.

Context

k 0.10.0

[benjaoming]

That is okay, we won’t stand a chance to fix edge cases like this 😃 But I’m fairly confident that the .pex and the .deb won’t be installed on the same system for future releases, since the .deb will be the go-to option on the Download pages for anyone on Debian systems.

We are doing changes in the .deb that will in fact run the system service as the desktop user, so there won’t even be a mixup 😃

[lyw07]

thank you! it totally makes sense to me now