Hi Marius. I take it that you encountered this problem again? Under what
circumstances–what versions of the charm and GUI? ~juju-gui's trunk of
the charm + juju GUI trunk should do what you need but everything else
will not at the moment. We are blocked by ~charmers in getting the charm
published,
On 03/14/2013 08:17 AM, Marius B. Kotsbak wrote:
Yes, I encountered it again, using juju-gui-source: trunk. and
cs:precise/juju-gui. Maybe this was a slightly different problem, but
still at loading the main page and failing to connect to the API. I also
saw this in the log:
Starting or
For anyone looking at this bug, the Juju GUI fix mentioned has been
released for several months now.
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https://bugs.launchpad.net/bugs/1149410
Title:
Stuck on Trying to
Public bug reported:
You will find when running “apt-get upgrade” (if you have Lucid updates
enabled in /etc/apt/sources.list) that you get this error on upgrading
udev:
mknod: `/lib/udev/devices/ppp': Operation not permitted
This problem is mentioned on
Hi. I'm trying to verify, but lxc-create no longer works for me,
probably because of a careless mistake on my part (updating all proposed
packages). I'll keep working on it.
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To be clear, lxc-create is still broken after I revert lxc to the
current, non-proposed version.
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Title:
udev fails to update
My lxc is working again (the solution was to clear out the lxc cache).
Unfortunately, it still does not work for me with a fresh lxc--running a
lucid container inside an oneiric host. Perhaps the SRU was for running
an oneiric container?
Symptoms: as before, during an update, I get this:
My apologies, Serge and Clint. I can confirm that this proposed SRU
fixes the problem for me, and I don't see any newly introduced problems.
Apparently I had not updated correctly: I was using 0.7.5 -0ubuntu8.2.
I see the new config now that I create a new instance with lxc 0.7.5
-0ubuntu8.3.
Public bug reported:
I encountered this problem when trying to create lxc containers after my
first one. The host had full access to archive.ubuntu.com, as verified
by Serge Hallyn and Robert Collins via various diagnostics.
After trying more careful approaches to a solution, Serge Hallyn
Public bug reported:
William and Robert developed the lxc-start-ephemeral script to support a
use case that the version in the package no longer supports, to the best
of our knowledge.
Specifically, we need to be able to programmatically start ephemeral
instances, send them a command and get the
Yes, the way the ssh was assembled was a bit rough--running sed over the
dhcp leases to find the ip address of the container name. In the
solution I proposed on this bug, we were going to initially do the same
within the command string. At least the hack would not be in lxc
itself. Later we
** Also affects: launchpad
Importance: Undecided
Status: New
** Changed in: launchpad
Status: New = Triaged
** Changed in: launchpad
Importance: Undecided = High
** Tags added: paralleltest
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Thank you Serge. The switch from aufs looks good.
We're evaluating it now. We'll have feedback soon.
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https://bugs.launchpad.net/bugs/914169
Title:
lxc-start-ephemeral
Public bug reported:
Using overlayfs with lxc causes tty problems that can kill X. Overlayfs
needs to honor the necessary cgroup permission calls, per the following
information from Serge.
here is a script which you can use to test the overlayfs
issue:
=
With the fix from bug 914169, the only basic change we need in this
script is as follows:
121,122c121,122
mkdir -p $LXC_DIR/rootfs/var/lib/dhcp3
mkdir -p $LXC_DIR/rootfs/var/lib/dhcp
---
sudo mkdir -p $LXC_DIR/rootfs/var/lib/dhcp3
sudo mkdir -p $LXC_DIR/rootfs/var/lib/dhcp
We're also
** No longer affects: launchpad
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Title:
lxc-start-ephemeral script does not support in-line programmatic
commands to ephemeral
@serge Thank you!
@Robert IIUC we do both dhcp and dhcp3. My diff merely added a sudo.
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Title:
lxc-start-ephemeral script does
Public bug reported:
On precise with newest packages as of 2012-01-31 1500Z, trying to start
an lxc lucid container hangs. Oneric and Precise containers work fine.
$ sudo lxc-start -n lp
init: ureadahead-other main process (31) terminated with status 4
init: console-setup main process (32)
I reported on IRC to Serge that virbr0 did indeed have STP enabled, but
that I did not see any obvious dnsmasq errors. He already had diagnosed
the problem said as a workaround I could just change the 'start on' in
/etc/init/console.conf in my container to 'start on mounted
MOUNTPOINT=/run'.
I tried the fix and I got the same symptom.
For clarity:
- I wiped out /var/lxc/cache before I started because lxc-create wasn't
working. That got lxc-create working. I used the same commands I
listed in the bug description.
- I changed the container's console.conf as described:
$ cat
Public bug reported:
Repro:
$ sudo lxc-create -t ubuntu -n precise -f /etc/lxc/local.conf -- -r precise -a
i686 -b gary
$ sudo lxc-start -n precise
[log in as root]
root@precise:~# apt-get install postgresql-common
Reading package lists... Done
Building dependency tree
Reading state
Public bug reported:
Repro:
$ sudo lxc-create -t ubuntu -n precise -f /etc/lxc/local.conf -- -r precise -a
i686 -b gary
$ sudo lxc-start-ephemeral -o precise
Setting up ephemeral container...
Starting up the container...
lxc-start: Invalid argument - failed to open
Serge, cool. The workaround is fine. Thanks.
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Title:
lxc on precise is not working with lucid containers
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** Attachment added: AplayDevices.txt
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** Attachment added: PciMultimedia.txt
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** Attachment added: Lsusb.txt
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** Attachment added: ProcModules.txt
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** Attachment added: ProcInterrupts.txt
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** Attachment added: PulseSinks.txt
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** Attachment added: UdevDb.txt
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** Attachment added: PulseSources.txt
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** Attachment added: UdevLog.txt
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** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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** Tags added: apport-collected running-unity
** Description changed:
Repro:
$ sudo lxc-create -t ubuntu -n precise -f /etc/lxc/local.conf -- -r precise
-a i686 -b gary
$ sudo lxc-start -n precise
[log in as root]
root@precise:~# apt-get install
apport information
** Attachment added: AlsaDevices.txt
https://bugs.launchpad.net/bugs/925024/+attachment/2706239/+files/AlsaDevices.txt
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** Attachment added: UdevLog.txt
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** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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** Tags added: apport-collected precise running-unity
** Description changed:
Repro:
$ sudo lxc-create -t ubuntu -n precise -f /etc/lxc/local.conf -- -r precise
-a i686 -b gary
$ sudo lxc-start-ephemeral -o precise
Setting up ephemeral container...
Starting up the
apport information
** Attachment added: Lsusb.txt
https://bugs.launchpad.net/bugs/925024/+attachment/2706246/+files/Lsusb.txt
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This seems related, but not identical, to bug 918327
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Title:
lxc script non-root errors can be confusing
To manage notifications
Public bug reported:
A trivial thing, but at least a couple of people have been confused by
something like this, just being forgetful:
$ lxc-start -n lp
lxc-start: failed to cap_get_flag: Invalid argument
lxc-start: failed to create veth5HNAcN-vethyuiOEf : Operation not permitted
lxc-start:
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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Title:
apparmor makes it impossible to install
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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Title:
apparmor breaks lxc-start-ephemeral (apparmor+overlayfs
** Tags added: bot-stop-nagging
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Title:
apparmor breaks lxc-start-ephemeral (apparmor+overlayfs returns
-EINVAL)
To manage
Public bug reported:
We believe sshd just hasn't started quickly enough, sometimes.
Graham Binns worked out this kind of solution, if it works for you:
http://pastebin.ubuntu.com/844925/ (see lines 146-157 in particular).
Thanks
Gary
** Affects: lxc (Ubuntu)
Importance: Undecided
Public bug reported:
Because of the current ssh approach used in lxc-start-ephemeral in lieu
of lxc-attach, you need a password or key in the ubuntu account to
connect. If you want to do this with automation, you can use a key. If
you want to use this with another user and that user's key, you
Public bug reported:
As smoser pointed out, lxc-start-ephemeral needs to do the same kinds of
things that lxc-clone does, such as this:
# change hwaddrs
mv ${c} ${c}.old
(
while read line; do
if [ ${line:0:18} = lxc.network.hwaddr ]; then
echo lxc.network.hwaddr=
Public bug reported:
The directories mounted both using the ephemeral's fstab and using -b
are not ephemeral. Changes to them persist on the filesystem, and are
thus shared across other ephemeral instances that mount the same
directories.
We have a branch that addresses this concern. We took
Public bug reported:
If multiple lxc-waits are run simultaneously, all after the first will
fail with bind : Address already in use.
This is apparently a known issue.
http://comments.gmane.org/gmane.linux.kernel.containers.lxc.general/962
** Affects: lxc (Ubuntu)
Importance: Undecided
Hi Serge. I don't actually know the original intent of -b, but what you
say makes sense. I changed our code to change all bind mounts in the
ephemeral's container to an ephemeral overlay, instead. That's kind of
what I wanted anyway, but I was being lazy. :-) I also worried it would
not be
Public bug reported:
This fixes it:
=== modified file 'debian/local/lxc-start-ephemeral'
--- debian/local/lxc-start-ephemeral2012-03-12 13:22:06 +
+++ debian/local/lxc-start-ephemeral2012-03-14 01:10:20 +
@@ -100,6 +100,8 @@
esac
done
+COMMAND=$@
+COMMAND_LENGTH=$#
Public bug reported:
Because of the problems we've encountered with overlayfs over the past
couple of months, and because aufs did seem to be working earlier, I'd
like it if we could have an option to use aufs with lxc-start-ephemeral.
Because overlayfs is the well-advertised future and aufs is
We are discovering that this, or something very similar to it, is
serious. For our own use, at least, I'd raise this to high (we don't
have privileges to do so).
According to lsof, many, many processes (sshd, upstart, init, ntpd,
etc., as well as processes we start directly such as xvfb-run and
Hi Serge. Thanks for looking at this.
On an aufs-mounted ephemeral:
gary@lpdev-temp-tKJg9Ss:~$ cat /proc/self/maps
08048000-08054000 r-xp 08:12 414657
/var/lib/lxc/lpdev/rootfs/bin/cat
08054000-08055000 r--p b000 08:12 414657
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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https://bugs.launchpad.net/bugs/959352
Title:
Ephemeral containers have /rootfs prefix in
I have duped the problem Benji reported, and did the kernel test in
order to let him work on other tasks.
The given kernel (reported in /proc/version as Linux version
3.3.0-030300-generic (apw@gomeisa) (gcc version 4.4.3 (Ubuntu
4.4.3-4ubuntu5.1) ) #201203182135 SMP Mon Mar 19 01:36:20 UTC 2012)
Public bug reported:
The -b flag in current Precise lxc-create sets up an fstab that has
$homedir $homedir none bind 0 0 instead of $homedir
/var/lib/lxc/$container/rootfs/$homedir none bind 0 0. This doesn't
seem to work, which is a regression.
I created a container with this:
$ sudo
Public bug reported:
It is possible to have an ephemeral container remaining after lxc-start-
ephemeral has been killed--trivially by calling kill -9 on lxc-start-
ephemeral. At that point, the script does not get a chance to clean up
after itself, and the system is left with a running ephemeral
I agree. I was thinking as I wrote this that we would be awfully close
to being able to get rid of the -- COMMAND stuff if this were
implemented, for instance; and generally close to being able to make
lxc-start-ephemeral behave very similarly to lxc-start in terms of
interaction patterns.
This is easily and repeatably duplicatable on in my lxc lucid container.
The error for the last test (with the multiprocessing SemLock OSError
seems the most likely to be a shared root cause to me. Interestingly,
the OSError was slightly different for me, with a newer lxc: OSError:
[Errno 38]
Salgado, would you be able to do this verification? If not, let me
know, and I'll do it.
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Title:
lxc on precise is not working
Public bug reported:
When lxc-start-ephemeral is given a command to run (-- do_something) it
wants to use lxc-attach to run the command, but lxc-attach is not ready
yet. Instead, it parses the dhcp leases to figure out the IP for the
container, and then tries to use ssh to run the command.
** Description changed:
[Impact]
- fill me in with explanation of severity and frequency of bug on users and
justification for backporting the fix to the stable release
+ This affects anyone using lxc-start-ephemeral as part of an automated process
for which intermittent failures are a
The improvement in the new version is significant, and there is no
regression.
The improvement is still insufficient for our use case, as I noted would
be likely in the updated description. For our use case of 32 LXC
containers running on a 32 core (16 hyperthreaded) EC2 box, 21 ephemeral
Public bug reported:
We are gathering more data, but it feels like we have enough to start a
bug report.
On Precise, on a 16 core/32 thread EC2 machine (instance type
cc2.8xlarge), when starting approximately eight or more Lucid containers
simultaneously, after the first seven or so connect to
** Description changed:
We are gathering more data, but it feels like we have enough to start a
bug report.
On Precise, on a 16 core/32 thread EC2 machine (instance type
cc2.8xlarge), when starting approximately eight or more Lucid containers
- simultaneously, after the first seven or
Serge, thank you! The workaround appears to work very well for us. The
containers started quickly, and it should not only give us more reliable
starts but also seems to have taken at least three minutes off our
average run time, as you might expect.
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This was working very well for us, and the lxc-start-ephemeral TRIES=60
was working fine. Starting last week, we began seeing recurrence of
this problem, even with the workarounds applied and TRIES hacked to 180.
I intend to circle around with Serge and see if he has any other ideas.
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Note that the workaround helps significantly but is not always
sufficient. If I do not apply it, I can reliably encounter the problem
every single test run.
Another team is working on moving us to run on Precise in production,
which would let us use Precise containers. Precise containers do not
If someone encounters these symptoms in Precise, the more detailed
instructions to fix it is to adjust apparmor as described in
http://www.stgraber.org/2012/05/04/lxc-in-ubuntu-12-04-lts/ , in the
section labeled Container nesting. The apparmor change is part of
Quantal, so the blog post's steps
+1 on adding to GUI. Priority-wise I think it goes after a decent chunk
of other goals, but it definitely fits into what we've said we want the
GUI to accomplish, and if we see a way to fit it in quickly hopefully we
can.
** Changed in: juju-gui
Status: New = Triaged
** Changed in:
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