Bug 1285805
| Summary: | The rhel7.2 docker image sets systemd target to graphical.target | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jan Pazdziora (Red Hat) <jpazdziora> | |
| Component: | rhel-server-container | Assignee: | Frantisek Kluknavsky <fkluknav> | |
| Status: | CLOSED ERRATA | QA Contact: | atomic-bugs <atomic-bugs> | |
| Severity: | unspecified | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | 7.2 | CC: | hchiramm, jpazdziora, lnykryn, mjenner, rcyriac, sghosh, walters | |
| Target Milestone: | rc | Keywords: | Regression | |
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | Doc Type: | Bug Fix | ||
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1286787 1286812 (view as bug list) | Environment: | ||
| Last Closed: | 2015-12-08 14:04:25 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: | ||||
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Description
Jan Pazdziora (Red Hat)
2015-11-26 14:03:56 UTC
Upon closer examination,
# docker run --name systemd -t rhel7.2 ls -la /etc/systemd/system/default.target
systemd
lrwxrwxrwx. 1 root root 37 Nov 10 09:47 /etc/systemd/system/default.target -> /lib/systemd/system/multi-user.target
shows that the image contains the correct target.
However, systemd during initialization says
Detected architecture x86-64.
Running with unpopulated /etc.
Welcome to Red Hat Enterprise Linux Server 7.2 (Maipo)!
Set hostname to <d9faac847dca>.
Initializing machine ID from random generator.
Populated /etc with preset unit settings.
Cannot add dependency job for unit display-manager.service, ignoring: Unit display-manager.service failed to load: No such file or directory.
which seems to be caused
empty_etc = access("/etc/machine-id", F_OK) < 0;
if (empty_etc)
log_info("Running with unpopulated /etc.");
and later
if (empty_etc) {
r = unit_file_preset_all(UNIT_FILE_SYSTEM, false, NULL, UNIT_FILE_PRESET_FULL, false, NULL, 0);
So it looks like the problem is caused by machine-id not being populated.
This is with docker-1.8.2-8.el7.x86_64 in case the problem is in the docker itself.
Upgrading to docker-1.9.1-4.el7.x86_64 did not help. Listing the environment variables of the /usr/sbin/init process (as seen on the host) does not show container_uuid to be set. Leaving a valid /etc/machine-id in the image would break a lot of things. We can try to work around this by leaving an empty /etc/machine-id in the container, hopefully breaking not so many things. (In reply to Frantisek Kluknavsky from comment #4) > Leaving a valid /etc/machine-id in the image would break a lot of things. We > can try to work around this by leaving an empty /etc/machine-id in the > container, hopefully breaking not so many things. I don't think that's the right fix. IMHO the goal should be for /etc/machine-id to be populated by docker via the container_uuid mechanism which I believe was in place in the past. I guess I can not do anything about it in the image, bug against docker filed: https://bugzilla.redhat.com/show_bug.cgi?id=1286787 (and https://bugzilla.redhat.com/show_bug.cgi?id=1286812) *** Bug 1286665 has been marked as a duplicate of this bug. *** # docker run --name systemd -t -v /sys/fs/cgroup:/sys/fs/cgroup:ro -e container=docker registry.access.stage.redhat.com/rhel7.2:7.2-38 /usr/sbin/init In another terminal # docker exec -ti systemd systemctl get-default multi-user.target Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHEA-2015-2575.html |