Rudder creates DSC based group and rules and breaks policy generation
Rudder create DSC based rule and group, even when there is no DSC plugin installed.
The problem is that the Technique dsc-common only comes with the plugin. So we are ending with a directive using a non-existing version of a Techniques, which is an error.
At least on one case, it lead to an user not being able to regenerate policies with the message:
Policy update process was stopped due to an error: ⇨ Policy update error for process '932' at 2017-10-04 11:00:20 ⇨ Cannot build Rule vals ⇨ Could not find configuration vals ⇨ Version '1.0' of technique 'dsc-common' is not available for directive 'DSC Based agent configuration' [dsc-common-all]
I was not able to reproduce that problem on a fresh install, so perhaps the problem only happens if the missing technique is used - which it shouldn't, so perhaps it was in conjunction with #11168.
For now, I'm setting it in "critical", because no generation without workaround is hardcore. We may decrease the severity when we understand the root cause and/or find a workaround.
- WORAROUND ***
If your generation is broken because of that one + #11168 and you don't actually have any windows node, you can workaround the problem, see: https://www.rudder-project.org/redmine/issues/11168#note-10