Hi,

Yesterday at ApacheCon Kris from Nuage networks gave a great presentation about 
alternatives for userdata from the VR: Config Drive

In short, a CD-ROM/ISO attached to the Instance containing the meta/userdata 
instead of having the VR serve it.

The outstanding PR [0] uses it's own format on the ISO while cloud-init already 
has support for config drive [1].

This format uses 'openstack' in the name, but it seems to be in cloud-init 
natively and well supported.

I started the discussion yesterday during the talk and thought to take it to 
the list.

My opinion is that we should use the OpenStack format for the config drive:

- It's already in cloud-init
- Easier to templates to be used on CloudStack
- Easier adoption

We can always write a file like "GENERATED_BY_APACHE_CLOUDSTACK" or something 
on the ISO.

We can also symlink the 'openstack' directory to a directory called 
'cloudstack' on the ISO.

Does anybody else have a opinion on this one?

Wido

[0]: https://github.com/apache/cloudstack/pull/2097
[1]: 
http://cloudinit.readthedocs.io/en/latest/topics/datasources/configdrive.html#version-2

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