[Lxc-users] Failed to access console after launching LXC through libvirt

[Sujay M]

Hey Qiu Yu,

I am a beginner to both lxc and openstack swift. Can you please clarify
some of my doubts related to openstack swift and lxc?


1. I want to set up a small cloud storage environment in my laptop. I mean
i need to host storage services for some clients and i want to virtualize
this environment. Is openstack swift enough for the above purpose or should
i install nova, glance and swift?


On 8 November 2012 22:10, Sujay M <sujay.m17 at gmail.com> wrote:

> Hey Qiu Yu,
>
> I am a beginner to both lxc and openstack swift. Can you please clarify
> some of my doubts related to openstack swift and lxc?
>
>
> On 8 November 2012 21:39, unicell <unicell at gmail.com> wrote:
>
>> Hi,
>>
>> I'm trying to manage LXC instances through OpenStack, which use libvirt
>> as a virtualization driver layer. After launching LXC instance, I simply
>> could not attach to the console.
>>
>> virsh # list
>>  Id Name                 State
>> ----------------------------------
>> 14366 instance-00000078    running
>>
>> virsh # console 14366
>> Connected to domain instance-00000078
>> Escape character is ^]
>>
>>
>> And it keeps stuck here.
>>
>> Initially I thought it could be a cgroup device config issue, and tried
>> to "echo ‘c 5:1 rwm'
>> >/cgroup/devices/libvirt/lxc/instance-00000078/devices.allow“, to add
>> /dev/console access right to the container. But it does not work, console
>> stilll not working.
>>
>> Before the cgroup tweaking, devices.list are as follows
>>
>> [root at localhost libvirt]# cat
>> /cgroup/devices/libvirt/lxc/instance-0000007a/devices.list
>>
>> c 1:3 rwm
>> c 1:5 rwm
>> c 1:7 rwm
>> c 1:8 rwm
>> c 1:9 rwm
>> c 5:0 rwm
>> c 5:2 rwm
>> c 136:* rwm
>>
>>
>> I'm not quite sure what kind of issue could possibly cause this console
>> access issue. Cause I'm now using two different guest OS templates on two
>> different host OSes. Following are some symptoms I observed.
>>
>>
>> * (g) for container guest OS
>> * (h) for host OS
>> * NOTE: Ubuntu guest os are generated by lxc-create -t ubuntu, which is
>> an Ubuntu 12.04 based lxc template.
>>              CentOS guest os are handcrafted by myself, taking reference
>> of http://wiki.1tux.org/wiki/Lxc/Installation/Guest/Centos/6
>>
>>    1. Ubuntu (g) launched by lxc-start on Ubuntu 12.04 host, console
>>    works
>>    2. Ubuntu (g) launched by OpenStack / libvirt on Ubuntu 12.04 host,
>>    console works
>>    3. Ubuntu (g) launched by OpenStack / libvirt on CentOS 6.3 host,
>>    console NOT works
>>    4. CentOS (g) launched by lxc-start on Ubuntu 12.04 host, console
>>    works
>>    5. CentOS (g) launched by OpenStack / libvirt on Ubuntu12.04 host,
>>    console NOT works
>>    6. CentOS (g) launched by OpenStack / libvirt on CentOS 6.3 host,
>>    console NOT works
>>
>> So somehow I feel it could be something related to LXC template rootfs,
>> but Host OS do make a difference (2 vs. 3). lxc-start / libvirt also makes
>> a difference (4 vs. 5), but that might be caused by cgroup setting.
>>
>> Could someone shed me some clues to further digging this issue? Thanks!
>>
>> --
>> Qiu Yu
>>
>>
>> ------------------------------------------------------------------------------
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>>
>>
>
>
> --
> Best Regards,
>
> Sujay M
> Final year B.Tech
> Computer Engineering
> NITK Surathkal
>
> contact: +918971897571
>
>


-- 
Best Regards,

Sujay M
Final year B.Tech
Computer Engineering
NITK Surathkal

contact: +918971897571
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