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Openstack + LXC, "Config requested an explict CPU model"

asked 2015-01-11 23:48:04 -0500

TheCrazedLog gravatar image

Hi all:

I'm playing around with RDO OpenStack to get a feel for it and how it all works. Our use case involves LXC: we want to test various daemons running on VM's, but we don't want the overhead that comes with a VM. LXC containers look ideal for what we need and I've been tasked to learn more.

I've gotten RDO up and running on a CentOS 7 VM and I've now got a node (physical) running CentOS 7. I've managed to get a QEMU VM instance up and running using a CentOS 7 ISO image that I created. Now that I've done that, I want to bring up LXC containers. I've googled around and have find various hints about how to do this, but I feel like I'm piecing together an ancient civilisation's history based on their lolly wrappers. I'm not getting anywhere fast :) Even the LXC doco doesn't seem to be much help.

I'm sure I'm missing something somewhere, but damned if I can figure out what or where it is. Everyone else seems to have had success doing this.

So far I've tried: - Setting virt_type=lxc in /etc/nova/nova.conf on the compute node and restarting the nova service. The web interface updates to show that the hypervisor is of type LXC. - A CentOS7 iso image - An ubuntu image - A tar.gz of an LXC chroot environment.

The error message I often run into is this one: "Invalid: Config requested an explicit CPU model, but the current libvirt hypervisor 'lxc' does not support selecting CPU models"

As far as I know I've never set any models. Doing a "glance image-show" shows no CPU information, the only relevant thing that it shows is that I've set hypervisor_type to be lxc.

What am I doing wrong? What should I be doing? Is there any good resources for how to go about creating an LXC image for Openstack?



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Your intend is to have LXC as Hypervisor for RDO Juno. I have experience with docker containers , e.g. nova-docker driver set up on RDO Juno (CentOS 7, F21)

dbaxps gravatar imagedbaxps ( 2015-01-12 02:32:49 -0500 )edit
dbaxps gravatar imagedbaxps ( 2015-01-12 02:36:57 -0500 )edit

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answered 2015-11-18 19:51:37 -0500

Did you ever get an answer to this ?

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Asked: 2015-01-11 23:48:04 -0500

Seen: 481 times

Last updated: Nov 18 '15