Bug 40119

Summary:	We need a simple way to run commands inside a docker app container
Product:	UCS	Reporter:	Dirk Wiesenthal <wiesenthal>
Component:	App Center	Assignee:	Dirk Wiesenthal <wiesenthal>
Status:	CLOSED FIXED	QA Contact:	Daniel Tröder <troeder>
Severity:	normal
Priority:	P5	CC:	gohmann, walkenhorst
Version:	UCS 4.1
Target Milestone:	UCS 4.1-0-errata
Hardware:	Other
OS:	Linux
What kind of report is it?:	---	What type of bug is this?:	---
Who will be affected by this bug?:	---	How will those affected feel about the bug?:	---
User Pain:		Enterprise Customer affected?:
School Customer affected?:		ISV affected?:
Waiting Support:		Flags outvoted (downgraded) after PO Review:
Ticket number:		Bug group (optional):
Max CVSS v3 score:
Bug Depends on:
Bug Blocks:	40192

Description Dirk Wiesenthal

2015-11-27 15:34:51 CET

This already works:

  docker exec $(ucr get appcenter/apps/$appid/container) COMMAND

But this is hard to explain and not very pretty.

We would need something like

  univention-app within $appid COMMAND

to enable ISVs to write pretty documentations.

Default should be /bin/bash

Better use -it (interactive terminal)

Comment 1 Dirk Wiesenthal

2015-11-30 23:41:19 CET

Fixed in
  univention-appcenter 5.0.19-18.77.201511302249

Command is
  univention-app shell $appid COMMAND

Default for COMMAND:
  DockerShellCommand in the app's ini file (which defaults to /bin/bash)

Done for containers not having /bin/bash, so that this can be overridden to /bin/sh. Leaving it empty rejects univention-app shell commands.

Comment 2 Dirk Wiesenthal

2015-12-03 13:55:29 CET

Do not log command to stdout; do not require -- to pass args to command
  univention-appcenter 5.0.19-19.78.201512031352

Comment 3 Daniel Tröder

2015-12-03 14:26:17 CET

OK: advisory
OK: Tests:

# touch /var/lib/docker/overlay/3b905a333141eed75eff4aedab7ad0f81cce01c7a938a32d016dec51851e2b21/merged/in_dudle-docker_container

# ls /in_dudle-docker_container
ls: Zugriff auf /in_dudle-docker_container nicht möglich: Datei oder Verzeichnis nicht gefunden

# univention-app shell dudle-docker ls -l /in_dudle-docker_container
-rw-r--r-- 1 root root 0 Dec  3 14:21 /in_dudle-docker_container

# univention-app shell dudle-docker cp --help
Usage: cp [OPTION]... [-T] SOURCE DEST
  or:  cp [OPTION]... SOURCE... DIRECTORY
  or:  cp [OPTION]... -t DIRECTORY SOURCE...
Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.
[→ '--help' goes to command, not univention-app]

# univention-app shell --help 
usage: univention-app shell [-h] app ...
[→ '--help' goes univention-app]

Comment 4 Daniel Tröder

2015-12-08 08:26:55 CET

TERM environment variable not set:

# univention-app shell dudle-docker
root@dudle-docker-1449012158371627:/# top
TERM environment variable not set.


Please change the call for shell without command to copy the TERM var from the users env. For example:

# docker exec -it 36defb298cc3 /bin/sh -c "export TERM=$TERM; cd \$HOME; exec /bin/bash"

Comment 5 Dirk Wiesenthal

2015-12-08 11:27:45 CET

(In reply to Daniel Tröder from comment #4)
> TERM environment variable not set:
> 
> # univention-app shell dudle-docker
> root@dudle-docker-1449012158371627:/# top
> TERM environment variable not set.
> 
> 
> Please change the call for shell without command to copy the TERM var from
> the users env. For example:
> 
> # docker exec -it 36defb298cc3 /bin/sh -c "export TERM=$TERM; cd \$HOME;
> exec /bin/bash"

Yes, I opened a new bug for it: Bug#40192

Comment 6 Janek Walkenhorst

2015-12-09 16:47:11 CET

<http://errata.software-univention.de/ucs/4.1/27.html>