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linuxkit/docs/platform-openstack.md
Nick Jones 7c65860a5c Refactor OpenStack push support to use Gophercloud 
This commit refactors the OpenStack push support to make use of the
Gophercloud library in order to handle authentication and talking to the
right image service as defined in the service catalogue.

Signed-off-by: Nick Jones <nick@dischord.org>
2017-07-24 13:47:18 +01:00

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LinuxKit with OpenStack

LinuxKit interacts with OpenStack through its native APIs and requires access to both an OpenStack Keystone server for authentication and an OpenStack image service (Glance) in order to host the LinuxKit images.

Supported (tested) versions of the relevant OpenStack APIs:

  • Keystone v3
  • Glance v2

Push

Image types supported:

  • ami (Amazon Machine image)
  • vhd (Hyper-V)
  • vhdx (Hyper-V)
  • vmdk (VMware Disk)
  • raw (Raw disk image)
  • qcow2 (Qemu disk image)
  • iso (ISO9660 compatible CD-ROM image)

A compatible image needs to have the correct extension (must match one from above) in order to be supported by the linuxkit push openstack command. The openstack backend will use the filename extension to determine the image type, and use the filename as a label for the new image.

Usage

The openstack backend uses the password authentication method in order to retrieve a token that can be used to interact with the various components of OpenStack. Example usage:

./linuxkit push openstack \
-authurl=http://keystone.com:5000/v3 \
-username=admin \
-password=XXXXXXXXXXX \
-project=linuxkit \
./linuxkit.iso

Execution Flow

  1. Authenticate with OpenStack's identity service
  2. Create a "queued" image in Glance and retrieve its UUID
  3. Use this new image ID to upload the LinuxKit image