http://pastie.org/9592816

Hi,

pretty cool to be able to run systemd unprived.

Unfortunately its not applicable on RHEL 6 (which is the default OS of our customers), since there is full cgroup support - but not at /sys/fs/cgroup - and its imho not possible to get them in there.

[root@ip-172-30-0-24 ec2-user]# cat /proc/cgroups

subsys_name hierarchy num_cgroups enabled

cpuset 1 6 1
ns 0 1 1
cpu 2 6 1
cpuacct 3 6 1
memory 4 6 1
devices 5 6 1
freezer 6 6 1
net_cls 7 2 1
blkio 8 6 1
perf_event 0 1 1
net_prio 0 1 1
[root@ip-172-30-0-24 ec2-user]# docker run maci0/systemd
FATA[0000] Error response from daemon: Cannot start container f54ae9e93b5deca4f44585819e15bc7e2b913be0d9d0dc0e0c1d1b068102b8e0: [8] System error: mkdir /var/lib/docker/devicemapper/mnt/f54ae9e93b5deca4f44585819e15bc7e2b913be0d9d0dc0e0c1d1b068102b8e0/rootfs/sys/fs/cgroup: no such file or directory

Hello. I found this repo via searching. I am experiencing similar problems with lxc (not docker) and was wondering if you had any expertise with lxc configuration. My goal would be to "port" your solution to the container. Thank you for any info can you provide.

I executed the docker exec command that was printed by run.sh:

docker exec -t -i 5fcd37cf1ae5652ff7f1738e0b8b7579558d4471483aad7ba6d839824e05a039 /bin/bash

Now I'm inside the container. ps shows systemd is running as PID 1:

[root@5fcd37cf1ae5 /]# ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 40408 2604 ? Ss 13:52 0:00 /usr/lib/systemd/systemd
root 7 0.0 0.0 11780 3056 ? Ss 13:52 0:00 /bin/bash
root 30 0.0 0.0 47432 3428 ? R+ 13:55 0:00 ps aux

But I can't query systemd's status:

[root@5fcd37cf1ae5 /]# systemctl status
Failed to get D-Bus connection: Operation not permitted

hello,
I need run systemd in docker container. I tried this one:
https://github.com/dramaturg/docker-debian-systemd

I build a docker image with systemd to run in it;
when I start docker container from root user, systemd works well,
as you see , the following process starts:

UID PID PPID C STIME TTY TIME CMD
root 1 0 0 May06 ? 00:00:00 /lib/systemd/systemd
daemon 18 1 0 May06 ? 00:00:00 /usr/sbin/atd -f
root 20 1 0 May06 ? 00:00:04 /usr/sbin/rsyslogd -n
message+ 23 1 0 May06 ? 00:00:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-acti
root 29 1 0 May06 ? 00:00:00 /usr/sbin/cron -f
root 31 1 0 May06 ? 00:00:00 /lib/systemd/systemd-logind
root 33 1 0 May06 ? 00:00:15 /lib/systemd/systemd-journald

I can use systemctl to start/stop service ;
But ,when I use other user(not root,eg:tiger),I cann't use systemctl or systemctl --user
in the no root environment;

tiger@ddb392be5603:/$ systemctl --user status
Failed to connect to bus: No such file or directory

I think if I want user systemctl --user command,I need start the systemd --user process manually,but also cann't start at tiger user environment:
error is:

tiger@ddb392be5603:/$ /lib/systemd/systemd --user
Failed to create /system.slice/docker.service/init.scope control group: Permission denied
Failed to allocate manager object: Permission denied

please help me ,thanks a lots;

PS:
my dockerfile like this:
...
VOLUME [ "/sys/fs/cgroup", "/run", "/run/lock", "/tmp" ]
CMD ["/lib/systemd/systemd"]

run docker command:
docker run -d -t -i -v /sys/fs/cgroup:/sys/fs/cgroup:ro bashimage_debian_use_systemd:v1.0

OS version:
tiger@ddb392be5603:/$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 8.4 (jessie)
Release: 8.4
Codename: jessie

my doceker version:

docker --version

Docker version 1.7.0, build 0baf609

Host systemd version:

systemd --version

systemd 215
+PAM +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ -SECCOMP -APPARMOR

docker container systemd version:
root@ddb392be5603:/# systemd --version
systemd 228
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN

Unfortnately when you start the machine you get a SEGV! Suggestions?

After yum -y install httpd, I ran systemctl start httpd, I got:

[root@b4ae10ee4b25 /]# systemctl status httpd.service
httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled)
   Active: failed (Result: exit-code) since Thu 2015-01-22 09:43:54 UTC; 5s ago
  Process: 592 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=226/NAMESPACE)
  Process: 591 ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND (code=exited, status=226/NAMESPACE)
 Main PID: 591 (code=exited, status=226/NAMESPACE)

Jan 22 09:43:54 b4ae10ee4b25 systemd[1]: httpd.service: main process exited, code=exited, status=226/NAMESPACE
Jan 22 09:43:54 b4ae10ee4b25 systemd[1]: httpd.service: control process exited, code=exited status=226
Jan 22 09:43:54 b4ae10ee4b25 systemd[1]: Failed to start The Apache HTTP Server.
Jan 22 09:43:54 b4ae10ee4b25 systemd[1]: Unit httpd.service entered failed state.

Tried under CentOS7 host and Ubuntu 14.04 host.