[libvirt] [PATCH] lxc: Add virCgroupSetOwner()

Stephan Sachse ste.sachse at gmail.com
Fri Feb 14 12:42:25 UTC 2014


>> agetty[38]: /dev/tty1: cannot get controlling tty: Operation not permitted
>> agetty[38]: /dev/tty1: cannot get controlling tty: Operation not permitted
>> agetty[38]: /dev/tty1: cannot set process group: Inappropriate ioctl for device
>
> Is this really the reason why the login fails? Does getty not start or does the login fail?

yes, the getty is started

100000   26665  0.0  0.0   6412   792 pts/0    Ss+  13:22   0:00
/sbin/agetty --noclear tty1
100000   26667  0.0  0.0   6412   848 ?        Ss   13:22   0:00
/sbin/agetty --noclear -s console 115200 38400 9600

and i can connect with "fedora1 console"

  virsh # console fedora1
  Verbunden mit der Domain: fedora1
  Escape-Zeichen ist ^]

  Fedora release 20 (Heisenbug)
  Kernel 3.13.2-2.el6.x86_64 on an x86_64 (tty1)

  fedora1 login:

put the console is "crazy". wrong line breaks after hit enter. first
two logins fails with wrong log entries. the password is displayed as
login. the third  attemot works. then i have a mix of console and
login promt. every 10 secons i hit enter i see a passwort promt. but i
can still use the shell. but imo this is a other problem. there are
messages about systemd --user can not connect the dbus socket in
/run/user/0/dbus/user_bus_socket

> I've never tested an upstart based distro maybe it is somehow confused. :)

forgot to say the container is fedora 20

> Can you please collect more details why a login via ssh is failing?

set LogLevel to DEBUG3. keyexchange is down. put then hangs for some
time und sshd dies

sshd[269]: debug1: KEX done [preauth]
sshd[269]: debug1: userauth-request for user root service
ssh-connection method none [preauth]
sshd[269]: debug1: attempt 0 failures 0 [preauth]
sshd[269]: debug3: mm_getpwnamallow entering [preauth]
sshd[269]: debug3: mm_request_send entering: type 8 [preauth]
sshd[269]: debug3: mm_getpwnamallow: waiting for MONITOR_ANS_PWNAM [preauth]
sshd[269]: debug3: mm_request_receive_expect entering: type 9 [preauth]
sshd[269]: debug3: mm_request_receive entering [preauth]
sshd[269]: debug3: mm_request_receive entering
sshd[269]: debug3: monitor_read: checking request 8
sshd[269]: debug3: mm_answer_pwnamallow
sshd[269]: debug3: Trying to reverse map address 10.1.25.151.
systemd[1]: Received SIGCHLD from PID 270 (sshd).
systemd[1]: Got SIGCHLD for process 270 (sshd)
systemd[1]: Child 270 died (code=killed, status=15/TERM)

> Also keep in mind that running a compete distro within LXC + user namespaces requires
> some changes. Like disabling pam_loginuid.so in pam.
> For systemd distros you have to remove OOMScoreAdjust= and CapabilityBoundingSet= from all units...

yes, i know. i have no errors from systemd, all looks fine with "exec
/sbin/init systemd.log_level=debug"

/stephan

-- 
Software is like sex, it's better when it's free!




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