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Bug 1327431

Summary:	50-coredump.conf is missing from systemd package
Product:	Red Hat Enterprise Linux 7	Reporter:	Anoop C S <anoopcs>
Component:	systemd	Assignee:	systemd-maint
Status:	CLOSED WONTFIX	QA Contact:	qe-baseos-daemons
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.2	CC:	jonathan.biegert, systemd-maint-list
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-04-15 08:23:41 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Anoop C S 2016-04-15 07:15:17 UTC

Description of problem:
On a RHEL 7 system, /proc/sys/kernel/core_pattern contains the text 'core'. The systemd coredump configuration file named 50-coredump.conf that re-writes kernel.core_pattern to '|/usr/lib/systemd/systemd-coredump %p %u %g %s %t %e' is not present with the systemd package shipped.

Version-Release number of selected component (if applicable):
# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.2 (Maipo)
# yum info systemd
Name        : systemd
Arch        : x86_64
Version     : 219
Release     : 19.el7_2.7
Size        : 21 M
Repo        : installed
From repo   : rhel-7-server-rpms

How reproducible:
Always

Steps to Reproduce:
1. Provision a RHEL 7 system.
2. # cat /proc/sys/kernel/core_pattern
core
3. Run the following:
# rpm -qil systemd | grep "50-coredump.conf"

Actual results:
Command from step 3 displayed nothing.

Expected results:
Command from step 3 displays the following:
/usr/lib/sysctl.d/50-coredump.conf

Additional info:
Further analysis
----------------
I could see the following lines from systemd spec file downstream[1] as a reason for the absence of 50-coredump.conf:
 . . .
# To avoid making life hard for Rawhide-using developers, don't package the
# kernel.core_pattern setting until systemd-coredump is a part of an actual
# systemd release and it's made clear how to get the core dumps out of the
# journal.
rm -f %{buildroot}%{_prefix}/lib/sysctl.d/50-coredump.conf
 . . .

AFAIK, systemd-coredump is already part of a systemd release way back[2] and fedora's systemd spec file have been modified to include 50-coredump.conf from version 215 onwards[3].

<diff>
 . . .
-Version:        214
-Release:        5%{?gitcommit:.git%{gitcommit}}%{?dist}
+Version:        215
+Release:        1%{?gitcommit:.git%{gitcommit}}%{?dist}

 . . .

-# Don't package the kernel.core_pattern, we need minidumps working before
-# this can replace Fedora's current core dump handling.
-rm -f %{buildroot}%{_prefix}/lib/sysctl.d/50-coredump.conf

 . . .

+%{_prefix}/lib/sysctl.d/50-coredump.conf

</diff>


[1] http://pkgs.devel.redhat.com/cgit/rpms/systemd/tree/systemd.spec?h=rhel-7.2
[2] https://github.com/systemd/systemd/commit/f5e04665ebf7124f3ea17dcf258793ed73a95fe1
[3] http://pkgs.fedoraproject.org/cgit/rpms/systemd.git/diff/systemd.spec?h=f23&id=1298810b87cdb4bba22a04d84591692979f95eca

Comment 2 Lukáš Nykrýn 2016-04-15 08:23:41 UTC

I don't think it would be wise to change the configuration of coredumps in the minor update of rhel.

Comment 3 jonathan.biegert 2021-02-17 13:11:24 UTC

Unfortunately now a RHEL7 install has a manpage systemd-coredump(8) stating the daemon would be used through /usr/lib/sysctl.d/50-coredump.conf but since that file is missing it is not.
So apparently RHEL 7 ships systemd-coredump and can use it (if coredump files or ABRT are undesired), but it has to be configured manually through sysctl.
The RHEL 7 System Administration Guide unfortunately does not cover this Question, only ABRT.