Bug 44520 - Installation of UCS@school on Backup/Slave via Appcenter fails with strange message
Installation of UCS@school on Backup/Slave via Appcenter fails with strange m...
Status: NEW
Product: UCS
Classification: Unclassified
Component: App Center
UCS 4.2
Other Linux
: P5 normal (vote)
: ---
Assigned To: App Center maintainers
App Center maintainers
Depends on:
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Reported: 2017-05-02 20:35 CEST by Arvid Requate
Modified: 2017-05-03 17:36 CEST (History)
1 user (show)

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What kind of report is it?: Bug Report
What type of bug is this?: 2: Improvement: Would be a product improvement
Who will be affected by this bug?: 1: Will affect a very few installed domains
How will those affected feel about the bug?: 2: A Pain – users won’t like this once they notice it
User Pain: 0.023
Enterprise Customer affected?:
School Customer affected?:
ISV affected?:
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UCSschoolAppInstallationOnBackup.png (158.47 KB, image/png)
2017-05-02 20:35 CEST, Arvid Requate

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Description Arvid Requate univentionstaff 2017-05-02 20:35:02 CEST
Created attachment 8818 [details]

I Installed the UCS@school App on a Master via Appcenter. Next I chose to install it also on a Backup (or Slave) in my domain. This fails with the strange message shown in the screenshot. The Appcenter should provide a better error message, or even better: guide the user to not run into this.
Comment 1 Arvid Requate univentionstaff 2017-05-02 20:49:06 CEST
This happened in a freshly setup domain with UCS 4.1-4 errata410.

management-console-module-appcenter.log shows:
02.05.17 19:47:15.632  MODULE      ( PROCESS ) : Error sending app infos to the App Center server: HTTP Error 400: Bad Request
02.05.17 19:47:18.418  MODULE      ( PROCESS ) : Try to install (install) ucsschool on backup71. Force? False. Only master packages? False. Prevent installation on other systems? None. Only dry run? True.
02.05.17 19:47:18.420  MODULE      ( WARN    ) : [Errno 111] Verbindungsaufbau abgelehnt

I rebooted the backup and then it worked. Anyway, the message from the Appcenter is useless.
Comment 2 Daniel Tröder univentionstaff 2017-05-03 07:28:22 CEST
Isn't this a general UCS App Center error?
The app center on the master replied with a HTTP400, the app center reports useless information to the user.
My guess is, that this can be reproduced with any app - not just UCS@school.
Comment 3 Arvid Requate univentionstaff 2017-05-03 16:20:13 CEST
Probably. Just the "message" part of that error message was lost on me. We should do better, whatever the specific cause was.