Bug 1787097

Summary:	There is no instruction for non-root user to start an LXC container. It needs systemd-run --user --scope
Product:	[Fedora] Fedora	Reporter:	Ryutaroh Matsumoto <ryutaroh2006>
Component:	lxc	Assignee:	Thomas Moschny <thomas.moschny>
Status:	CLOSED EOL	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	32	CC:	admiller, karlthered, mailinglists, silas, soeren.grunewald, thomas.moschny
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-25 17:34:42 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 Ryutaroh Matsumoto 2019-12-31 02:32:37 UTC

Description of problem:

Non-root user cannot start an LXC container by lxc-start.
He or she needs to use
systemd-run --user --scope -p "Delegate=yes" lxc-start -F -n nonroot-fedora31

Version-Release number of selected component (if applicable):

# dnf list --installed | grep lxc
lxc.x86_64  3.2.1-1.fc32                           @@commandline      
lxc-libs.x86_64   3.2.1-1.fc32                           @@commandline      
lxc-templates.x86_64  3.2.1-1.fc32                           @@commandline      

How reproducible: Always


Steps to Reproduce:

1. Do the workaround in https://bugzilla.redhat.com/show_bug.cgi?id=1787093
As a non-root user:
2. lxc-create -n nonroot-fedora31 -t download -- -d fedora -r 31 -a amd64
3. lxc-start -F -n nonroot-fedora31

Actual results:
systemd-run --user --scope -p "Delegate=yes" lxc-start -F -n nonroot-fedora31
starts the container as expected. But

$ lxc-start -F -n nonroot-fedora31
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: mkdir_eexist_on_last: 1279 Permission denied - Failed to create directory "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/"
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: monitor_create_path_for_hierarchy: 1300 Failed to create cgroup "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/nonroot-fedora31"
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: cgfsng_monitor_create: 1389 Failed to create cgroup "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/nonroot-fedora31"
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: mkdir_eexist_on_last: 1279 Permission denied - Failed to create directory "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/"
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: monitor_create_path_for_hierarchy: 1300 Failed to create cgroup "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/nonroot-fedora31-1"
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: cgfsng_monitor_create: 1389 Failed to create cgroup "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/nonroot-fedora31-1"
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: mkdir_eexist_on_last: 1279 Permission denied - Failed to create directory "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/"
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: monitor_create_path_for_hierarchy: 1300 Failed to create cgroup "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/nonroot-fedora31-2"
lxc-start: nonroot-fedora31: cgroups/cgfsng.c: cgfsng_monitor_create: 1389 Failed to create cgroup "/sys/fs/cgroup/user.slice/user-1000.slice/session-2.scope/lxc.monitor/nonroot-fedora31-2"

This continues 1000 times!!!

Expected results: Start of a container.

The problem is that lack of (friendly) instruction for non-root users
to start an LXC container. There is absolutely no documentation.


Additional info:
Upstream report
https://github.com/lxc/lxc/issues/3221

Comment 1 Ben Cotton 2020-02-11 17:36:15 UTC

This bug appears to have been reported against 'rawhide' during the Fedora 32 development cycle.
Changing version to 32.

Comment 2 Fedora Program Management 2021-04-29 17:00:21 UTC

This message is a reminder that Fedora 32 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora 32 on 2021-05-25.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
Fedora 'version' of '32'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 32 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Comment 3 Ben Cotton 2021-05-25 17:34:42 UTC

Fedora 32 changed to end-of-life (EOL) status on 2021-05-25. Fedora 32 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.