Synchronization problems of students data on the teacher server

Support KA Lite
1

Hi everybody

We have synchronization problems with K-Lite. When we connect our teacher computers to the KA Lite Server, we have connection, but synchronisation does not work.

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Even after hours the data do not upload. We have no idea what happens and where to change any settings. I would really appreciate your help.

Best,

Christoph

2

Dear Christoph,

Thanks for telling!

We have been doing work to upgrade the central server on the software-side, and this work hasn’t concluded yet. It seems that we are running low on server resources which affects synchronization at random times. It’s possible that it suddenly works after we do an upgrade of server resources.

Please stand by, I will update this thread when the server has been upgraded, and :crossed_fingers: it works.

Best,
Ben

3

Dear Ben,

Thanks for your reply: When do you think the upgrades will be installed? You know, we are analyzing the data now to publish a scientific paper in early summer, so it’s really urgent.

Ist there a way to download the children’s data as excel or csv from the teacher server computer?

Best,
Christoph

4

You know, we need the Laptops for another project and we need the data for our analysis: It is really urgent!

Best,
Christoph

5

Hi @kuehnhanss - Yes, sorry, it is actually me/I who is the person working on this server upgrade. I am almost finished, but need to coordinate some IP/DNS changes. It can be some time next week.

I notice that the old server is still up and running, but often too troubled to respond.

6

Hi benjamin, it still doesn’t work with the synchronization. And now we really do only have a couple of days until we have to reuse the computers and delete all the data. Please let me know, how we can synchronize or save the data to synchronize afterwards.

Best, Christoph

7

We have now completed a substantial software upgrade on a cloned server and it has replaced the old server. We will monitor if it has the intended effects and get back, once its conclusive (or keep working on the issue).

8

Thank you very much, Benjamin. We told our IT-responsable in El Salvador to try again. So they are still sleeping, we get news probably in the afternoon.

Let’s hope the best!

Thanks once again and greetings from Switzerland and El Salvador
Christoph

9

At 8:23 AM (UTC+1) the server was unresponsive for 13 minutes, but so were a bunch of other servers, so this must have been a provider issue.

At 1:18 PM (UTC+1), hub.learningequality.org became unresponsive again through HTTP. But I had a direct connection to the server. No signs of overload, but the HTTP server isn’t responding.

So once again, something is wrong. will get back to you.

10

They tried it in El Salvador - but no response. So we wait for further information. Thank you so much. We are really nervous about the issue
Best, Christoph

11

The server started responding again after 1 hour and 4 minutes, and it hasn’t had any problems since. I’m wondering if somehow this has coincided with the time where the El Salvador team was sync’ing?

12

Te hey will try again …

13

High Benjamin

Sorry for not answering any more… We thought, the problem was resolved in El Salvador. Thats what they told me. But it wans’t resolved at all. So we still have the problem of missing non-sincronized data. What about the KA-Lite server? That’s what our IT-specialist in El Salvador says: “The last thing I did when the timing always starts right. Then it generates error. And I see that the only thing that synchronizes are the information of the times it starts the session. Time and a part that says mastery and a percentage.”

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So I think, if it’s not a server problem any more, they do something wrong, but I don’t know what. I would be very happy if you could connect one time with Teamwork to a computer in El Salvador (it works!) and look what is going wrong…

Thank you very much

Regards
Christoph

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High Benjamin, I connetcted today via TeamViewer. I send you two screenshots of our syncronization-problem. We connected a teacher’s computer to KA-Lite. We press the sync-key, the system says, it connected and synconized. But on the administrator page we just see errors and no data. So what’s wrong?

Thank you for your reply
Christoph

17

Hi @kuehnhanss

I have been absent.

To understand your error fully and correctly (I don’t speak Spanish), your teacher sees a page with correct synchronization, and you can only see an error count on your page’s list of sync events where you expect the “84015” device to give you a report with the actual data?

We are working on issues with data export and CSV that seems to be caused by a badly performing data export function – it overloads the server and the request times out.

I’ll see what I can do and how this page is supposed to behave and get back.

Best,
Ben

18

Thank you so much. t is still a problem – and we almost gave up. So I hope you’ll find the error… it would be very precious to integrate the data in our analysis.

Best,
Christoph

19

Hi @kuehnhanss

We have completed the migration and are working to move the CSV exports out of the current HTTP request-response cycle, because they were too heavy, hence the timeouts.

I’ll be another few days before I can launch this, because it implied adding new features to some very old code :slight_smile:

Thanks for the patience!

Ben

20

So thank you very much again. Hope you will succeed!

Best
Christoph