[lxc-users] Out of kernel resources

[Federico Alves]

X2go is incompatible with gnome3
LXDE could be, but I need to autologin a user in graphics mode, and I have
only found a way to make it happen in Gnome.

I changed the file file limits.conf and I am trying again.


On Fri, Jul 3, 2015 at 12:39 AM, Fajar A. Nugraha <list at fajar.net> wrote:

> (1) does this work on normal, non-lxc F22?
> If NO, then you should try fedora/vncserver grup/list first
>
> (2) What happens when you run as that user manually? e.g.
> - ssh falves at localhost (I find that su/sudo sometimes does weird
> things when it comes to limits, so login with ssh to be safe)
> - run whatever command that start vncserver
>
> (3) Have you set up special limits for that user on
> /etc/security/limits.conf?
> open files limit for normal user is usually 1024. However it's
> possible to use larger than that if root sets it to something greater,
> and run su/sudo. If that limit is reached, "normal" user usession (the
> ones not created by root su/sudo) would still be stuck at the old,
> smaller limit.
>
> The easiest way to check is to login as that user from ssh, and then
> run "ulimit -a". You didn't say where you run your ulimit commands
> from, so the results might be different.
>
> (4) Have you tried other remote GUI solutions?
> I use x2go with lxde-qt on my ubuntu trusty containers, works fine
>
> --
> Fajar
>
>
> On Fri, Jul 3, 2015 at 10:42 AM, Federico Alves <venefax at gmail.com> wrote:
> > I have Fedora 22 Workstation and many Fedora 22  containers with GUI
> > (vncserver).
> >
> > After I start a few, after 35 containers, vncserver refuses to start in a
> > new container, under a regular user (falves)
> > This is the error:
> > Jul 02 23:14:13 voice38 runuser[515]: pam_unix(runuser-l:session):
> session
> > opened for user falves by (uid=0)
> > Jul 02 23:14:13 voice38 runuser[515]: runuser: failed to execute
> /bin/bash:
> > Resource temporarily unavailable
> > Jul 02 23:14:13 voice38 runuser[515]: pam_unix(runuser-l:session):
> session
> > closed for user falves
> > Jul 02 23:14:13 voice38 systemd[1]: vncserver@:0.service: control
> process
> > exited, code=exited status=126
> > Jul 02 23:14:13 voice38 systemd[1]: Failed to start Remote desktop
> service
> > (VNC).
> > -- Subject: Unit vncserver@:0.service has failed
> >
> > for that user (falves)
> > ulimit -a
> > core file size          (blocks, -c) 0
> > data seg size           (kbytes, -d) unlimited
> > scheduling priority             (-e) 0
> > file size               (blocks, -f) unlimited
> > pending signals                 (-i) 1048576
> > max locked memory       (kbytes, -l) unlimited
> > max memory size         (kbytes, -m) unlimited
> > open files                      (-n) 1048576
> > pipe size            (512 bytes, -p) 8
> > POSIX message queues     (bytes, -q) 819200
> > real-time priority              (-r) 0
> > stack size              (kbytes, -s) 8192
> > cpu time               (seconds, -t) unlimited
> > max user processes              (-u) 4096
> > virtual memory          (kbytes, -v) unlimited
> > file locks                      (-x) unlimited
> >
> >
> > At the host and at the container:
> >  /sbin/sysctl fs.file-nr
> > fs.file-nr = 105472     0       26412773
> >
> > It seems I am breaking some limit, either at the kernel or per user. I
> don´t
> > want to start vncserver as root, because Chrome does not run as root.
> >
> > Any idea how to unblock this sutuation?
> >
> > Yours
> >
> > Federico
> >
> > _______________________________________________
> > lxc-users mailing list
> > lxc-users at lists.linuxcontainers.org
> > http://lists.linuxcontainers.org/listinfo/lxc-users
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