BigBlueButton - web conferencing system for on-line learning

[doodlemania2]

@girish That might also help nextcloud talk high perf backend too.

[BrutalBirdie]

@doodlemania2 ARG I think I read something about nextcloud talk not support turnservers with TLS?

"(D)TLS is currently not supported by Nextcloud Talk and does not have any real security benefit anyway. For more details see the changelog below." -- https://help.nextcloud.com/t/howto-setup-nextcloud-talk-with-turn-server/30794/93703

So be aware of this.

[robi]

What we really need then is a TURN server integrated with Nginx.

Doing a quick search I haven't found an extension for Nginx, but then I thought why not front the TURN server we have with Nginx as a proxy load balancer which can include port 80/443 and UDP ports.

This post goes into the configuration of something like that:
https://stackoverflow.com/questions/51566225/nginx-load-balancing-a-turn-server

@staff could easily adapt this to handle non HTTP traffic via the TURN server and the rest going to the Apps.

[girish]

@robi Yes, see the jitsi handbook link in my previous post.

[jdaviescoates]

@girish said in BigBlueButton - web conferencing system for on-line learning:

Actually, I am just fixing this for 6.1. I am trying out https://jitsi.github.io/handbook/docs/devops-guide/turn and hopefully that works.

Did this get into 6.1?

[girish]

@jdaviescoates unfortunately, no

[luckow]

Hi,

from time to time there is an app request for jitsi & BigBlueButton here in the forum. I would like to throw my 2 cents into this discussion.

First: We need a turn server on port 443 and 80 to help people join conferences. There are so many stupid networks / firewalls that a turn server is mandatory. Good news: We have a turn server as an app on Cloudron. Maybe later, it's possible to configure this app.

Second: What is the background to this request? A video conference with friends? Say up to 10 people on the server? A combination of moodle and BigBlueButton for your local school? All my experience with video conferencing for larger groups brings me to the conclusion: forget these apps on Cloudron. They are hungry. In terms of RAM, CPU and bandwidth. The underlying software stack is real-time critical. Better use bare metal instead of cheap VMs. For schools, you need a cluster of BBB nodes and an upstream load balancer. Because of latency, you need a hosting provider close to most of the people using the video conference. For really huge conferences you need a dedicated 10 Gbit network. You need a lot of customisation under the hood. In short, to have a reliable infrastructure for videoconferencing, you need a lot of time to dig deep into the subject.

(My) conclusion: We have Kopano Meet as an app. Let's make this app better for our use case (having a self hosted videoconference for our family and friends meetings). We have Greenlight as a frontend for dedicated BigBlueButton infrastructure. We can use Moodle, Nextcloud and WordPress as alternative frontends for BBB servers. We have Grafana and Prometheus for the metrics of BBB servers. We can use Statping.

Good news is:

The installation process for a dedicated BBB server is painless.
https://github.com/bigbluebutton/bbb-install

Wait for the configurable turn app on Cloudron or install a coturn yourself.

1. Click yourself a dedicated bare metal. Let's say https://www.hetzner.com/de/dedicated-rootserver/ax41-nvme
2. Install ubuntu 16 on it.
3. SSH into it
4. wget -qO- https://ubuntu.bigbluebutton.org/bbb-install.sh | bash -s -- -w -v xenial-22 -s bbb.example.com -e info@example.com -c <hostname>:<secret>
5. Install Greenlight on Cloudron
6. Take the output of bbb-conf --secret and put it into .env of Greenlight.
7. Restart the Greenlight app.
8. Happy videoconferencing with many users.

For a better understanding of "What's going on?" install https://github.com/greenstatic/bigbluebutton-exporter to your BBB instance and add Grafana and Prometheus to your Cloudron.

The basic installation of a dedicated Jitsi instance is also trouble-free.
https://jitsi.github.io/handbook/docs/devops-guide/devops-guide-quickstart

Since my larger conferences rely on BigBlueButton, I didn't feel the need to dig deep into jitsi's scaling. That's why I've installed jitsi meet on cheap VMs for up to 30 users.
But if you want to go deeper into this topic, here is a link to a talk by a maintainer of jitsi meet -> https://fosdem.org/2021/schedule/event/jitsi_scaling/

[A Former User]

@luckow These are good points. I don't think its a bad idea to have the option (like with Jitsi) still but BBB specifically should stay out. Especially when considering how resource hungry it is and that it requires older versions of Ubuntu. That being said Cloudron should probably never be used for truly large scale conferences simply because those tasks are better suited for distributed setups behind a loadbalancer as you said.

I did also want to mention that there are cloudron instances that have more resources available. I'm running an i3-9100 and 128GB of RAM. My CPU and 300Mbps network bandwidth are the bottlenecks now and would still not be suited to this sort of high load scenario (large conferences)

[jimcavoli]

@atrilahiji I'm increasingly inclined to agree - and the Greenlight interface being available and usable by Cloudron LDAP seems like the best of all worlds for that split. That's a really elegant solution that meets needs in my opinion for anyone who needs heavier-duty conferencing.

[girish]

@luckow Thanks! I put your instructions here - https://docs.cloudron.io/apps/greenlight/#installing-bigbluebutton

[jdaviescoates]

@atrilahiji said in BigBlueButton - web conferencing system for on-line learning:

BBB specifically should stay out. Especially when considering how resource hungry it is and that it requires older versions of Ubuntu.

BBB 2.3 that'll work on Ubuntu 18.04 is getting there (currently alpha-8) and with Cloudron 7.0 we should be getting multi-host support, which would make it easier to give BBB it's own server.

I'd still love it on here!

[A Former User]

@jdaviescoates yeah same. For me it’s mostly because I’m cheap. If I can avoid paying for a VPS I want to try. Everything I run now (except for my BBB backend) is on my home server

[jdaviescoates]

@atrilahiji heh, fair enough. Like lots of people I don't have good enough internet at home to be able to do that

[jeau]

Version 2.3 just released
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.0

But the documentation is not yet up to date, especially about the installation which is now possible on Ubuntu 18.04 and about the improvements and new features.

[jeau]

@jeau read also this post 5 most exciting newly added features of BigBlueButton Version 2.3

[luckow]

Use the "official" ansible role for the deployment -> https://github.com/ebbba-org/ansible-role-bigbluebutton/tree/develop/2.3

[luckow]

Presentation foto for the new release. Taken from the release party.

[girish]

@luckow So, this one adds ubuntu 18/20 support?

[luckow]

@girish ubuntu 18 only.

[doodlemania2]

@luckow my BBB as a service is almost ready - if anyone is interested, DM me