Reviewed: https://review.openstack.org/407450
Committed:
https://git.openstack.org/cgit/openstack/nova/commit/?id=1f659251c7509cab045024044a6b8d642ad85aef
Submitter: Jenkins
Branch:master
commit 1f659251c7509cab045024044a6b8d642ad85aef
Author: Markus Zoeller
Date: Tue Dec 6 11:40:25 2016
Fix proposed to branch: master
Review: https://review.openstack.org/407450
** Changed in: nova
Assignee: (unassigned) => Markus Zoeller (markus_z) (mzoeller)
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** Changed in: nova
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Title:
console.log grows indefinitely
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** Changed in: nova
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Title:
console.log grows indefinitely
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** Changed in: nova
Status: Confirmed => In Progress
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Assignee: (unassigned) => Markus Zoeller (markus_z) (mzoeller)
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CONFIRMED FOR: MITAKA
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Title:
console.log grows indefinitely
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Title:
console.l
Blueprint "libvirt-virtlogd" [1] intents to make use of the libvirt
feature Daniel mentioned in comment #51.
[1] https://blueprints.launchpad.net/nova/+spec/libvirt-virtlogd
** Changed in: nova
Assignee: Tony Breeds (o-tony) => (unassigned)
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Libvirt releases once a month, and QEMU is in feature freeze for its
next release. So this will easily be ready before Newton
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Title:
console.log
ah that is good to hear.
i assume this will be fixed then before the newton release.
what is the time frame of libvirt 1.3.3 and qemu 2.6?
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Title:
Patches are ready to solve this entirely in the libvirt layer one & for
all. It'll be fixed with libvirt 1.3.3
https://www.redhat.com/archives/libvir-list/2016-February/msg01449.html
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htt
this has been around a really long time now
is the aproch suggested here a suitable solution.
https://bugs.launchpad.net/charms/+source/nova-compute/+bug/1460197
really it is the installation tool change but prehaps we can do someting from
the nova side also.
perhaps just document how to configu
Long time bug, it's confirmed, not triaged, as the path forward remains
unclear.
** Changed in: nova
Status: Triaged => Confirmed
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Title:
Re comment #44:
There has been a ring buffer char device named ringbuf available
upstream in QEMU as Anthony suggested in comment #23 like following:
qemu -chardev ringbuf,size=640k,id=foo -serial chardev:foo
And the QMP commands have already been exposed by QEMU like:
{ 'command': 'ringbuf-rea
It's now (UTC) Thursday.
** Changed in: ossa
Status: Incomplete => Won't Fix
** Tags added: security
** Information type changed from Public Security to Public
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Agreed, this is class C2 (a vulnerability in some dependency, not in
OpenStack code, and so nothing we're going to fix with a patch to
OpenStack security supported projects nor anything for which we should
issue a security advisory). If there are no disagreements, I'll switch
this to a regular publ
Proposing class C2
https://wiki.openstack.org/wiki/Vulnerability_Management#Incident_report_taxonomy
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Title:
console.log grows indefinitely
To ma
I think it's legitimate to consider that the flaw is in qemu or libvirt,
for copying console data from guest to host without much possibilities
of controlling it. My recommendation would be to fix it there so that
all cases of hostile VMs are covered, rather than just the Nova use
case. If we agree
** Changed in: qemu-kvm (Ubuntu)
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Title:
console.log grows indefinitely
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** Changed in: ossa
Assignee: hzxiongwenwu (xwwzzy) => (unassigned)
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Title:
console.log grows indefinitely
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console.log grows indefinitely
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** Tags added: ops
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Title:
console.log grows indefinitely
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I think the blueprint https://blueprints.launchpad.net/nova/+spec
/serial-ports is just a workaround for this bug, and currently we have
no way to disable console.log .
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@John Haller: Great news!
Do you think the associated code could be proposed as backport for
Havana and Icehouse too ?
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Title:
console.log grows
See the following blueprint, the associated code has passed the gate for Juno:
https://blueprints.launchpad.net/nova/+spec/serial-ports
This only addresses KVM hosts, which support access console access via
SPICE, which is the solution adopted in above blueprint.
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@Rob: if we can document relatively-efficient workarounds, yes, that
would make a good OSSN. The "fix" has been delayed for quite some
releases now, so I'd not hold my breath for juno :)
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@robert-clark, the fixes to date have been band-aids. This is currently
targeted to be fixed properly in Juno with
https://blueprints.launchpad.net/nova/+spec/fix-libvirt-console-logging
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I've just read through this thread with a view to wether we should
release a related OSSN.
>From what I can tell, no fix was ever agreed on, is this likely to
change?
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Putting back in OSSA scope so that we discuss what to do with this
** Also affects: ossa
Importance: Undecided
Status: New
** Changed in: ossa
Status: New => Incomplete
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Milestone: icehouse-3 => None
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** Changed in: nova
Milestone: icehouse-2 => icehouse-3
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Title:
console.log grows indefinitely
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Fix proposed to branch: master
Review: https://review.openstack.org/47634
** Changed in: nova
Status: Triaged => In Progress
** Changed in: nova
Assignee: (unassigned) => Michael Still (mikalstill)
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Title:
c
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Status: In Progress => Triaged
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c
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Title:
console.log grows indefinitely
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Fix proposed to branch: master
Review: https://review.openstack.org/39048
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Title:
con
should we first fix it in nova before kvm and libvirt have better fix
on this ?
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Title:
console.log grows indefinitely
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Just to brainstorm:
Are any of the following possible??
1. Correctly have libvirtd configure and manage the console log file size. Some
new XML configuration for the domain.xml format could be provided to alter the
behavior? How much of the libvirt code would have to change for this?
2. If #1 i
Can we please move this to wish list?
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** Branch linked: lp:~openstack-ubuntu-testing/nova/raring-grizzly
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A more permanent solution needs to be discussed for this. Mikal wants to
have a session about it at the next Summit.
** Changed in: nova
Importance: Medium => High
** Changed in: nova
Status: In Progress => Confirmed
** Changed in: nova
Assignee: Chuck Short (zulcss) => (unassigne
It certainly seems like we should only send the last N lines of the
console to the user (although that might be computationally expensive to
generate on such a large file). That's a separate bug though I suspect.
I've filed bug 1081436 for that.
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We recently had a console log grow to 5.5GB
When a user tries to get the console via the API it in turn packs this into a
message and sends it off to rabbitmq.
For us this completely killed our rabbitmq cluster. The user kept trying to get
the console knocking out a rabbitmq server each time (e
IMHO having fixed size rotated logs per VM with max number of files, is
a better solution that a ringbuffer. It really doesn't complicate the
code that much to have to potentially just read a few lines from a
second rotated logfile.
While I agree that conserver is overkill if satisfying the requi
conserver is in Debian non-free, and thus unsuitable.
conserver would still needed to receive the log output from qemu via a
FIFO or similar, and this introduces the problem of what qemu should do
when it is blocked on writing to conserver, which is where I think my
previous patch failed (and I di
Having examined the idea of the libvirt_consoled a bit more, I think it
is not actually required. It is possible to get good support for console
logging, max bounded size, rollover, & secure remote access, simply by
dropping in the standard 'conserver' daemon with a suitable
configuration file. Th
Anthony,
The file would be a disk-based ringbuffer. There would need to be a
well-known disk-based ringbuffer format, which currently doesn't exist.
Perhaps a "libringbuffer" to encapsulate it. The format would need head
and tail indexes and then the data, together with some thought for
concurrent
I don't understand what the file argument would mean. Once you write()
to a file, QEMU no longer can implement a ring buffer (it cannot discard
written data). You would need to do something like the following:
qemu -chardev memchr,max-capacity=640k,id=foo -serial chardev:foo
And then introduce
> > The reason for the qemu-kvm task is that we think qemu-kvm is really the
> > ultimate right place to add a '-serial ringbuffer:640k,file=/path/to/file'
> > flag.
> > All the other attempts are more hacky, but if upstream kvm had this ,
> > libvirt could expose it, and openstack could use it.
I would really like us to find a "real" (and upstreamable) solution for this,
but I lack the KVM/libvirt expertise to make it happen.
Subscribing Daniel Berrange to see if he has another idea.
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On Wed, 11 Apr 2012, Serge Hallyn wrote:
> > Serge,
> > The reason for the qemu-kvm task is that we think qemu-kvm is really the
> > ultimate right place to add a '-serial ringbuffer:640k,file=/path/to/file'
> > flag.
> > All the other attempts are more hacky, but if upstream kvm had this ,
I think this would need a libringbuffer as nova would need to read the
same file in get_console_output. When I first looked at this in
September, I could not find such a thing, or any accepted on-disk
format. The python code in my patch could be a good starting point, but
there a couple of things I
> Serge,
> The reason for the qemu-kvm task is that we think qemu-kvm is really the
> ultimate right place to add a '-serial ringbuffer:640k,file=/path/to/file'
> flag.
> All the other attempts are more hacky, but if upstream kvm had this ,
> libvirt could expose it, and openstack could use
Serge,
The reason for the qemu-kvm task is that we think qemu-kvm is really the
ultimate right place to add a '-serial ringbuffer:640k,file=/path/to/file' flag.
All the other attempts are more hacky, but if upstream kvm had this , libvirt
could expose it, and openstack could use it.
I do no
Marking invalid in qemu-kvm assuming there is nothing to do there.
Please switch back and rebuke me if I misunderstood.
** Changed in: qemu-kvm (Ubuntu)
Status: Confirmed => Invalid
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** Also affects: qemu-kvm (Ubuntu)
Importance: Undecided
Status: New
** Changed in: qemu-kvm (Ubuntu)
Status: New => Confirmed
** Changed in: qemu-kvm (Ubuntu)
Importance: Undecided => High
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Fix proposed to branch: master
Review: https://review.openstack.org/4932
** Changed in: nova
Status: Confirmed => In Progress
** Changed in: nova
Assignee: (unassigned) => Chuck Short (zulcss)
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review was here:
https://review.openstack.org/#change,706
Last request was if the ringbuffer handling could be done by a separate
helper binary so nova-compute could go down for a bit without locking up
instances.
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Fixed in Ubuntu, refused upstream.
** Changed in: nova
Assignee: Robie Basak (racb) => (unassigned)
** Changed in: nova
Status: In Progress => Confirmed
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** Changed in: nova
Importance: Low => Medium
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Title:
console.log grows indefinitely
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The review has gone stale... What's the status on this ? You have the
fix in Ubuntu but it was refused upstream ? Or is that a different fix
that you have in Ubuntu ?
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** Branch linked: lp:ubuntu/libvirt
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Proposed to essex: https://review.openstack.org/706
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** Branch linked: lp:~james-page/ubuntu/oneiric/nova/fix-new-installs
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** Branch linked: lp:ubuntu/nova
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This bug was fixed in the package nova - 2011.3-0ubuntu4
---
nova (2011.3-0ubuntu4) oneiric; urgency=low
[James Page]
* debian/nova-common.postinst:
- Exclude mounted LXC rootfs filesystems within /var/lib/nova from
user/group ownership changes (LP: #861260).
- Ensur
** Branch linked: lp:~james-page/nova/fix-lxc-and-primary-group
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** Branch linked: lp:~ubuntu-server-dev/nova/diablo
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This bug was fixed in the package libvirt - 0.9.2-4ubuntu14
---
libvirt (0.9.2-4ubuntu14) oneiric; urgency=low
* debian/patches/lp832507.patch: update virt-aa-helper to use the correct
paths for character devices that are pipes. This can be removed in
0.9.7. (LP: #832507)
-
** Changed in: libvirt (Ubuntu)
Status: In Progress => Fix Committed
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I now have an upstreamable patch that I will be uploading to Ubuntu shortly. It
adds tests to the build suite and passes QRT (with the newly ..._console_pipe()
test):
Description: fix AppArmor driver for pipe character devices
The AppArmor security driver adds only the path specified in the doma
** Changed in: libvirt (Ubuntu)
Status: Triaged => In Progress
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** Changed in: nova
Assignee: Dave Walker (davewalker) => Robie Basak (racb)
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** Changed in: nova
Assignee: (unassigned) => Dave Walker (davewalker)
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** Changed in: nova (Ubuntu)
Assignee: Dave Walker (davewalker) => Robie Basak (racb)
** Changed in: nova
Assignee: Dave Walker (davewalker) => (unassigned)
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What I have so far: everything except point 6 in the plan above.
Problems:
1) libvirt creates an AppArmor profile for console.fifo and not
console.fifo.{in,out}.
Other things to check:
1) Console logging gets resumed correctly on restart.
2) Correct management of live migration.
3) Correct mana
** Tags added: apparmor
** Also affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
** Changed in: libvirt (Ubuntu)
Status: New => Triaged
** Changed in: libvirt (Ubuntu)
Importance: Undecided => High
** Changed in: libvirt (Ubuntu)
Assignee: (unassigned) => Jam
** Changed in: nova (Ubuntu)
Milestone: ubuntu-11.10-beta-2 => ubuntu-11.10
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** Tags added: rls-mgr-o-tracking
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The plan is:
1) Create a FIFO, open it persistently and use this as the console log
destination
2) Write a handler that will write to a ring buffer on disk
3) Periodically read data out of the FIFO and give it to the handler
4) Also do step 3 before processing get_console_output
5) get_console_ou
It turns out that kvm gracefully handles it a listener on a named pipe
close()s its connection and opens it again (and buffers whatever output
would have been read in the mean time). This should make this a much
simpler fix.
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** Changed in: nova (Ubuntu)
Milestone: None => ubuntu-11.10-beta-2
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** Changed in: nova (Ubuntu)
Status: Confirmed => In Progress
** Changed in: nova (Ubuntu)
Assignee: (unassigned) => Dave Walker (davewalker)
** Changed in: nova
Status: Confirmed => In Progress
** Changed in: nova
Assignee: (unassigned) => Dave Walker (davewalker)
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** Branch linked: lp:~davewalker/nova/832507_with_emlog
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* Using named pipes / fifo would seem to re-introduce the same issue
differently.
* Logging to unix socket would mean there needs to be a listener within nova to
suck in the log to file, but means it's handled in userspace (good).
* Using a non-standard kernel module called emlog is interesting,
** Also affects: nova (Ubuntu)
Importance: Undecided
Status: New
** Changed in: nova (Ubuntu)
Importance: Undecided => High
** Changed in: nova (Ubuntu)
Status: New => Confirmed
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