Not working presentation in BBB beta 2.2 version

[Kishore Bezawada]

Hi all, 

I am new to BigBlueButton, I tried to installed bbb 2.2 beta version on hetzner server. When I am trying to upload a presentation it's getting an error like "opps, something went wrong", and also I attached the screenshot. I am trying in some ways but still having issue with that presentation.

Can anyone help here?  

[Chad Pilkey]

Look in the bbb-web logs for errors or just attach the log here. The bbb-web logs are in /var/log/bigbluebutton/bbb-web.log

[Kishore Bezawada]

Hi Chad,

Please find the attached log file /var/log/bigbluebutton/bbb-web.log.

[Chad Pilkey]

Thanks for including the log. Never seen this error before in bbb-web. It looks like the core problem is this, "Caused by: java.io.IOException: Too many open files". I found a StackOverflow post that has some commands to try to see how many files are open for the process and what the limit is set to. https://stackoverflow.com/questions/19636676/error-in-tomcat-too-many-open-files. Any references to tomcat7 should be replaced with "bbb-web" and where they reference the "tomcat" user it is instead "bigbluebutton" user.

The first step is to find the pid for bbb-web:

ps aux | grep bbb-web

Then find the maximum number of open files:

cat /proc/bbb-web-pid/limits

And finally the current number of open files:

ls -l /proc/bbb-web-pid/fd | wc -l

[Prathyusha Reddy]

Hi Chad,

Please find the o/p

root@Ubuntu-1604-xenial-64-LTS /proc # ls -ltr | grep -i 5778
dr-xr-xr-x  9 bigbluebutton    bigbluebutton                  0 Jul 10 11:17 5778
root@Ubuntu-1604-xenial-64-LTS /proc # cat /proc/5778/limits
Limit                     Soft Limit           Hard Limit           Units
Max cpu time              unlimited            unlimited            seconds
Max file size             unlimited            unlimited            bytes
Max data size             unlimited            unlimited            bytes
Max stack size            8388608              unlimited            bytes
Max core file size        0                    unlimited            bytes
Max resident set          unlimited            unlimited            bytes
Max processes             514978               514978               processes
Max open files            1024                 1024                 files
Max locked memory         65536                65536                bytes
Max address space         unlimited            unlimited            bytes
Max file locks            unlimited            unlimited            locks
Max pending signals       514978               514978               signals
Max msgqueue size         819200               819200               bytes
Max nice priority         0                    0
Max realtime priority     0                    0
Max realtime timeout      unlimited            unlimited            us
root@Ubuntu-1604-xenial-64-LTS /proc #  ls -l /proc/5778/fd | wc -l
5

Regards,

Prathyusha

On Thu, Jul 11, 2019 at 10:51 AM Prathyusha Reddy <vprathy...@gmail.com> wrote:

Hi Chad,

Thank you , I am facing the same issue.

Please find the o/p 

root@Ubuntu-1604-xenial-64-LTS ~ # ps aux | grep bbb-web
bigblue+   5778  0.0  0.0  15264  3052 ?        Ss   Jul10   0:00 /bin/bash /usr/share/bbb-web/run-prod.sh
root      22361  0.0  0.0  16976  1088 pts/2    S+   07:10   0:00 grep --color=auto bbb-web
root@Ubuntu-1604-xenial-64-LTS ~ # cat /proc/bbb-web-5778/limits
cat: /proc/bbb-web-5778/limits: No such file or directory
root@Ubuntu-1604-xenial-64-LTS ~ # ls -l /proc/bbb-web-5778/fd | wc -l
ls: cannot access '/proc/bbb-web-5778/fd': No such file or directory
0

Regards,

Prathyusha

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[Ghazi TRIKI]

Hello Prathyusha

I have already seen this error `java.io.IOException: Too many open files` under different circumstances. It happens when you try to a number of files at the same time more than allowed by your OS. It might be caused by the multiple `create` calls that it is trying to write a lot files.

Can you please explain to us why you have so many `create` API calls?

Are you using the demo pages or a third-party tool to create the conferences?

Can you share the full `bbb-web.log` without any truncation?

Thanks,

Ghazi

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[Prathyusha Reddy]

Hi dear,

I have just installed bbb thorough bbb-install.sh and I testing through https://teach.xxxxx.in/demo/demo1.jsp, There we are not able to upload presentation, we also getting one more error for the first time login we are not getting any 500 error but once we have end meeting and trying to login again we are facing with 500 error , after that once we refresh the page or restart the bbb then 500 error is disappeared.

Please have a look and advice.

I have shared the error logs of bbb-web.log.

Thanks !

Regards,

Prathyusha.

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[Fred Dixon]

Can you check if /var/bigbluebutton is owned by tomcat7 or bigbluebutton.

If it's owned by tomcat7, try

  sudo chown -R bigbluebutton:bigbluebutton /var/bigbluebutton

  sudo bbb-conf --restart

and then try uploading a presentation again.  Let us know if the above gets you going.

Regards,... Fred

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[Prathyusha Reddy]

Hi Fred,

I have checked /var/bigbluebutton is owned by bigbluebutton only.

Thanks and Regards,

Prathyusha

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[Fred Dixon]

Hi Prathyusha,

Thanks for giving us a closer look at your server.

We were not able to determine why your were getting so many instances of

java.net.SocketException: Too many open files

But, when we updated the installation with the following command

  wget -qO- https://ubuntu.bigbluebutton.org/bbb-install.sh | bash -s -- -v xenial-220-beta -s bbb.example.com -e in...@example.com

substituting the name 'bbb.example.com' and 'in...@example.com' for the parameters for your server, we were able to launch sessions on your server without error.

There was a configuration issue somewhere on the server, and doing the above update looks to have resolved it.

Regards,... Fred

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[Prathyusha Reddy]

Hi Fred,

Thank you so much for your great support and patience...

I'm grateful for your commitment to working through this.

regards,

Prathyuhsa.

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[Fred Dixon]

A follow-up ... in taking a look at Prathyuhsa's server, the root error was bbb-web unable to process API requests, and in 

 /var/log/bigbluebutton/bbb-web.log

we could see error messages with the line

Caused by: java.io.IOException: Too many open files

This particular server had a lot of CPU cores and memory (not sure if this is related).  Nonetheless, we had also edited

  /lib/systemd/system/bbb-web.service

and set LimitNOFILE=8024.  After restarting bbb-web

  sudo systemctl daemon-reload

  sudo systemctl restart bbb-web

we didn't see this error anymore.  Hope this helps anyone else facing the same issue.

Regards,... Fred

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[Sibil]

Hi Fred,

We faced the same issue on presentation upload. /var/log/bigbluebutton/bbb-web.log has the same error - "Too many open files".

Our EC2 instance has a lot of CPU cores(24) and a lot of RAM.  I'm on BBB 2.2.5.

Your fix solved the issue. Thanks for the support.

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