Description Jürn Brodersen 2023-03-31 09:52:00 CEST

Do not run join scripts within pre-join phase

We are installing ucs@school packages within the pre-join phase, our intention is to have all school join scripts already installed before the initial join starts. This works nicely on a replica, because no join scripts are executed during a package install.

On backups however the join scripts are executed directly during the package installation. This results in timeouts and errors on backups during the ucs@school package installation because the system isn't joined yet.

My idea is that we do not run join scripts in the pre-join phase.

Maybe add a check here:
https://git.knut.univention.de/univention/ucs/-/blob/5.0-3/management/univention-join/join.sh#L80

This should fix bug 54716, but I keep it open for now in case we want to fix that in another way.

Acceptance criteria:
- [ ] join scripts are not run within pre-join phase
- [ ] documentation is updated
- [ ] Maybe a test, but the ucs@school tests might be considered sufficient