Bug 57025 - Veyon screen preview does not scale in large environments
Veyon screen preview does not scale in large environments
Status: NEW
Product: UCS@school
Classification: Unclassified
Component: Veyon
UCS@school 5.0
Other Linux
: P5 normal (vote)
: ---
Assigned To: UCS@school maintainers
:
Depends on: 56829
Blocks:
  Show dependency treegraph
 
Reported: 2024-02-05 12:20 CET by Christina Scheinig
Modified: 2024-04-23 09:10 CEST (History)
4 users (show)

See Also:
What kind of report is it?: Bug Report
What type of bug is this?: 5: Major Usability: Impairs usability in key scenarios
Who will be affected by this bug?: 3: Will affect average number of installed domains
How will those affected feel about the bug?: 5: Blocking further progress on the daily work
User Pain: 0.429
Enterprise Customer affected?: Yes
School Customer affected?: Yes
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number: 2024012921000315, 2023031621000374, 2023121221000131, 2024041721000145, 2024041921000151, 2024041621000316
Bug group (optional): UCS Performance
Max CVSS v3 score:


Attachments
Shows the interruption (458.00 KB, image/png)
2024-02-05 12:20 CET, Christina Scheinig
Details
iptraffic (33.95 KB, image/png)
2024-02-05 12:21 CET, Christina Scheinig
Details

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Comment 1 Christina Scheinig univentionstaff 2024-02-05 12:21:17 CET
Created attachment 11189 [details]
iptraffic
Comment 3 Christina Scheinig univentionstaff 2024-02-05 12:29:25 CET
In a customer environment the use case is to have 6 classrooms, maybe more, open in parallel. 

The teachers open the classroom and monitor all screens, but there are still interruptions in view. (see screenshot)

These are caused for example by restarting clients in one classroom during exammode, while the other room gets these interruptions.


First school:
Summe Clients: 	345
Anzahl Räume: 	72

Second school
Summe Clients:  351
Anzahl Räume: 	82
Comment 6 Mirac Erdemiroglu univentionstaff 2024-03-08 09:17:08 CET
Another customer affected 2023121221000131

Customer use near 1000 devices in the school environment and between 300-400 devices are active in use at the same time.

I guess this is a bit to much to handle for the Veyon Proxy.
Comment 7 Johannes Königer univentionstaff 2024-03-08 12:53:43 CET
(In reply to Mirac Erdemiroglu from comment #6)
> Another customer affected 2023121221000131
> 
> Customer use near 1000 devices in the school environment and between 300-400
> devices are active in use at the same time.
> 
> I guess this is a bit to much to handle for the Veyon Proxy.

Which version of the Veyon Proxy was used in this case, and are there any crashes reported by the Veyon Proxy when calling `univention-app logs ucsschool-veyon-proxy`?
Comment 8 Dirk Schnick 2024-03-11 15:57:36 CET
At the other customer Mirac mentioned we used latest ucsschool appcenter veyon first and pulled 4.8.2.17 in a given procedure from Univention support team then. So we used original ucsscholl veyon version and also 4.8.2.17 now.
Comment 9 Mirac Erdemiroglu univentionstaff 2024-04-19 14:49:07 CEST
Another customer affected 2024041921000151

They using 30 computer rooms and 700 clients.
Comment 10 Mirac Erdemiroglu univentionstaff 2024-04-19 14:51:22 CEST
The update to a newer container version "could" be help.

docker pull veyon/webapi-proxy:4.8.2.17
docker tag veyon/webapi-proxy:4.8.2.17 docker.software-univention.de/ucsschool-veyon-proxy:4.7.4.14-0
univention-app remove ucsschool-veyon-proxy
univention-app install ucsschool-veyon-proxy --do-not-pull-image
Comment 11 Christina Scheinig univentionstaff 2024-04-23 09:10:59 CEST
Because of the increasing list of tickets at this bug I increased the "who will be affected by this bug"