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fuel-plugin-xenserver
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fuel-plugin-xenserver/specs/fuel-plugin-xenserver.rst

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Copyright 2015 Citrix Systems

Fuel Plugin for Xenserver

The XenServer plugin provides the ability to use Xenserver as the hypervisor for Mirantis OpenStack.

Compatible with Fuel version 8.0.

Problem description

There is currently no supported way for Citrix Xenserver customers to use Mirantis OpenStack in their environments. Further, Fuel does not provide sufficient flexibility to add a new hypervisor option to the wizard, meaning that any users of Citrix XenServer who wish to manually configure Fuel are required to select an incorrect hypervisor then made post-install changes to switch them over to using XenServer.

Proposed change

Unfortunately the Fuel Plugin architecture is not sufficiently flexible to allow a plugin to add a new hypervisor option to the wizard. Therefore, this plugin will provide a new Release definition which can be used to automatically install with XenServer.

Alternatives

N/A - the aim is to implement a Fuel plugin.

Data model impact

None, although a new Release will be installed into the existing model.

REST API impact

None.

Upgrade impact

When upgrading the Fuel Master node to Fuel Version higher than 8.0, plugin compatibility should be checked, and a new plugin installed if necessary.

Security impact

None.

Notifications impact

None.

Other end user impact

Once the plugin is installed, the user can select the XenServer Release and then configure the access credentials in the Settings tab of the Fuel Web UI.

Performance Impact

None.

Plugin impact

The plugin will:

  • Install a customized Release definition (based on Ubuntu) which will only be usable to install an environment with XenServer
  • Connect to XenServer over a new network (an internal management network)
  • Require the network is already set up on the host (to be documented)
  • Set up the network to use DHCP, which will allow access to XenServer over a fixed link-local IP 169.254.0.1
  • Configure Nova to the XenAPI driver and use this interface to connect
  • Configure the Compute VM to provide a NATed interface to Dom0 so that storage traffic (for example, when downloading the initial image) which originates in Dom0 can be routed through the Compute VM as a gateway

Other deployer impact

The plugin requries the Compute nodes to be created on the XenServer hosts as XenServer's Nova plugin requires access to the virtual disks as they are being created.

Developer impact

None.

Infrastructure impact

None.

Implementation

Assignee(s)

Primary assignee:

Huan Xie <huan.xie@citrix.com> (developer)

Other contributors:

Bob Ball <bob.ball@citrix.com> (developer, reviewer) Jianghua Wang <jianghua.wang@citrix.com> (developer) John Hua <john.hua@citrix.com> (developer)

Work Items

  • Upgrade the XenServer Fuel 7.0 plugin to work with Fuel 8.0.
  • Test XenServer plugin.
  • Create the documentation.

Dependencies

  • Fuel 8.0

Testing

  • Prepare a test plan.
  • Test the plugin according to the test plan.

Documentation Impact

  • Create the following documentation:
  • User Guide.
  • Test Plan.
  • Test Report.

References