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[Vladimir Popovski <vladimir@xxxxxxxxxxxxxxxxx>]

Folks,



Have anybody tried to inject user data into instances? Or if anybody
actually tried to use Cloudpipe / VPN functionality?



It seems like there is some code missing (at least on libvirt/connection
level).



If I’m not missing anything, EC2 RunInstances takes user_data from kwargs
arguments and provides it to compute_api, who stores it in base_options /
instances table.

Cloudpipe’s launch_vpn_instance also goes through the same path. However,
there is no any parser of user_data field on compute manager / driver level.



For example, if we will look at spawn implementation in libvirt:



it calls _create_image(instance, …

, who calls

disk.inject_data(basepath('disk'), key, net, partition=target_partition,
nbd=FLAGS.use_cow_images)

                where image is mounted as nbd device and key/net information
is inserted by



                    inject_data_into_fs(tmpdir, key, net, utils.execute)

_inject_key_into_fs

_inject_net_into_fs



It seems reasonable to pass user data to disk.inject_data and
inject_data_into_fs and inject it into FS as well, but there is no such code
…



Or am I missing anything?





Another interesting situation is with inject_file compute APIs  …



on API level there is no even file/contents fields, only

def inject_file(self, context, instance_id):

but they exist on compute.manager level:

def inject_file(self, context, instance_id, path, file_contents):





Thanks,

-Vladimir