Open Stack

Hello Pádraig,

I am also trying to get file injection to work in Essex, but have run into some issues, as stated here: https://answers.launchpad.net/nova/+question/198878

The image I am launching is a simple bare container qcow2 image (CirrOS, this: https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-x86_64-disk.img )

Would it be possible to backport this: https://github.com/openstack/nova/commit/2b3a1e7
So that file injection as I am trying to do it will work? Or is there any other way to make it work?

Thanks and Best Regards,
Fredric

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-----Original Message-----
From: openstack-bounces+fredric.morenius=ericsson.com at lists.launchpad.net [mailto:openstack-bounces+fredric.morenius=ericsson.com at lists.launchpad.net] On Behalf Of Pádraig Brady
Sent: den 30 maj 2012 01:22
To: Nicolae Paladi
Cc: openstack
Subject: Re: [Openstack] File injection support

On 05/29/2012 07:35 PM, Nicolae Paladi wrote:
> Hello,
> 
> I am looking for more information about file injection support in 
> OpenStack and find it increasingly inconsistent and incomplete. I have several questions:
> 
> * This wiki article 
> (http://wiki.openstack.org/HypervisorSupportMatrix) claims that file 
> injection is supported in XenServer, is NOT supported inn KVM it's not clear about the others. is that still the case?

One of the key Essex Features was "Hypervisor Feature Parity", including:
Disk Config, resize and file injection.

I've updated the wiki accordingly.

So there is support in "kvm" for injecting ssh keys, net info, root password, or arbitrary files.

By default there are 3 methods tried in turn to do this:
loopback mount, qemu-nbd, libguestfs.

In Essex injection is supported to the first partition of guest images.
Folsom enables further libguestfs functionality to inspect arbitrarily complex guest images and find the root partition to inject to.

> At least there is
> some mentioning of file injection in the openstack xenserver wiki:
> http://wiki.openstack.org/XenServer/Development
> 
> * Is there any guide or man page where file injection is explained? in 
> this use case I would like to inject a file to e.g. 
> /etc/security/zzzz.conf at launch time -- is that possible, and if yes how can it be done in the Essex release.

The API docs explain the "personality" parameter to achieve this:
http://docs.openstack.org/api/openstack-compute/2/content/CreateServers.html
This is exposed on the nova command line tool though the --injected-files option.

> * Are there any discussions about "the future" of file injection?

There are other options, like cloud-init or using a config drive.
You enable a config drive with the nova --config-drive option, with value as a boolean or a volume ID. See also:
https://blueprints.launchpad.net/nova/+spec/config-drive-v2

cheers,
Pádraig.

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