In the administration the virtual classroom BigBlueButton can be activated. This article describes the configuration of multiple BigBlueButton servers, load balancing and setting up system-wide room templates.
Instructions on how to configure individual online dates are described in the chapter Course Element BigBlueButton.
Table of contents
Online-Meetings without date
Online-Meetings without a date (permanent room reservations) are not visible in the calendar and count as booked at all times towards the limits of the room template.
The goal is to distribute the generated load of simultaneous online meetings to the available BigBlueButton server by considering a set of performance parameters (such as number of videos and number of participants in the meetings). OpenOlat has an integrated load-balancing for this purpose. At the initial start of the online-meeting (depending on the configuration by the moderator or the first participant) the server with the lowest load is selected for the meeting. The load is calculated from the different measurement factors and weights the result with the capacity factor. Using the filter above the list, the server key figures can be displayed over the entire BBB server or only the sessions of the current OpenOlat server.
The capacity factor is recorded with a value between 1 and 100 per server. The calculated number of users* on the server is multiplied by the capacity factor. In this way, a server with stronger performance (RAM/CPU/disk) adapts to a weaker one.
* Weighting when counting users from high to low: video users, audio users, viewer
The room templates are available for selection when creating a new online-meeting. Templates control the following characteristics:
Configuration of a room template
Default settings of the room template
Default settings for locked participants
Overview of configured online-meetings with the possibility to switch directly to the course/group (context) and/or delete this online-meeting.
Calendar overview of configured online-meetings to check times with high occupancy and graphically display overlaps. This gives you a quick overview of the scheduled synchronous meetings of the entire OpenOlat instance and, if necessary, you can quickly select an alternative date.