Bug 49045 – stuck connections with ssh reboot using systemd (4.3)

Bug 49045 - stuck connections with ssh reboot using systemd (4.3)


Summary:	stuck connections with ssh reboot using systemd (4.3)

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	PAM
Version:	UCS 4.3
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	UCS 4.3-3-errata
Assigned To:	Jannik Ahlers
QA Contact:	Felix Botner

URL:	https://serverfault.com/questions/706...
Keywords:	systemd

Depends on:	47233
Blocks:
	Show dependency tree / graph

Reported:	2019-03-20 11:49 CET by Arvid Requate
Modified:	2019-07-03 13:31 CEST (History)
CC List:	6 users (show)

See Also:	49382 49614
What kind of report is it?:	Bug Report
What type of bug is this?:	4: Minor Usability: Impairs usability in secondary scenarios
Who will be affected by this bug?:	5: Will affect all installed domains
How will those affected feel about the bug?:	2: A Pain – users won’t like this once they notice it
User Pain:	0.229
Enterprise Customer affected?:	Yes
School Customer affected?:
ISV affected?:
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Bug group (optional):	Usability
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Description Arvid Requate

2019-03-20 11:49:30 CET

We also need a backport for 4.3-3

+++ This bug was initially created as a clone of Bug #47233 +++

+++ This bug was initially created as a clone of Bug #45215 +++

With systemd "reboot", "halt", "shutdown" is too fast, as the sshd gets killed before the connection is closed down properly. This leads to the ssh session staying around until the TCP timeout kicks in.

Calling
 reboot & logout
fixes it.

From #45215:

(In reply to Felix Botner from comment #3)
> OK, works in ec2 utils
> 
> (In reply to Erik Damrose from comment #1)
> > This is not only an issue in UCS Test, it is also annoying while working
> > with UCS in general. We could backport
> > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=751636
> 
> yep, but please open a new bug for UCS

Comment 1 Jannik Ahlers

2019-03-20 12:04:02 CET

73737e4 Bug #47233: yaml
3cb6414 Bug #47233: close ssh connection properly when shutting down
16d2629 Bug #49045: yaml
(yes I know the bug numbers are wrong, unfortunately I only noticed when it was already too late)

Successful build
Package: univention-pam
Version: 11.0.1-5A~4.3.0.201903201159
Branch: ucs_4.3-0
Scope: errata4.3-3

Comment 2 Felix Botner

2019-03-21 13:41:41 CET

OK - univention-base-files
OK - yaml

Comment 3 Felix Botner

2019-03-21 13:47:32 CET

(In reply to Felix Botner from comment #2)
> OK - univention-base-files
> OK - yaml

OK univention-pam

Comment 4 Arvid Requate

2019-03-26 13:52:43 CET

4.3/univention-pam      OPEN
 49045     VERIFIED/FIXED      (ready) stuck connections with ssh reboot using systemd (4.3)
[FAIL] bug.49045.scope+version: Bug 49045 scope: UCS 4.3-3-errata
[FAIL] version.scope: scope in version

I've fixed this:

a32bde0835 | fix target release

Comment 5 Arvid Requate

2019-03-27 14:28:42 CET

<http://errata.software-univention.de/ucs/4.3/464.html>