@Sergey_Kuyanov The error messages you're seeing in the mongodb dashboard suggests there's something wrong with the SSL settings. As this Discuss post suggests, you should double check those in your mongodb.yml file. What's puzzling me is the fact that you can see logs in Discover though and not in the dashboard. I think we should call on the Beats team for guidance here.
@Marius_Dragomir Do you have an idea of what might be causing the problem here?