neutron

History

Kailun Qin 03f65602df Fix attribute mismatch in router provider update The transition of a router from distributed to centralized may mistakenley get its 'ha' attribute updated at the same time. The side-effect is that the router may become HA enabled unexpectedly. This patch fixed the mismatched attribute in _update_router_provider method which addressed the issue cited above. Closes-Bug: #1780094 Change-Id: Ib00de137692979229d1b7ba033ecff04e9cc9db0 (cherry picked from commit `886e241553`)		2019-04-18 20:57:20 +08:00
..
service_providers	Fix attribute mismatch in router provider update	2019-04-18 20:57:20 +08:00
README	Adopt neutron-lib plugin directory	2016-11-23 04:45:33 -07:00
__init__.py	Empty files should not contain copyright or license	2014-10-20 00:50:32 +00:00
l3_router_plugin.py	use l3 api def from neutron-lib	2017-12-15 07:03:14 -07:00

README

This service plugin implements the L3 routing functionality (resources router
and floatingip) that in earlier releases before Havana was provided by core
plugins (openvswitch, linuxbridge, ... etc).

Core plugins can now choose not to implement L3 routing functionality and
instead delegate that to the L3 routing service plugin.

The required changes to a core plugin are in that case:
- Do not inherit 'l3_db.L3_NAT_db_mixin' (or its descendants like extraroute)
  anymore.
- Remove "router" from 'supported_extension_aliases'.
- Modify any 'self' references to members in L3_NAT_db_mixin to instead use
  'directory.get_plugin(constants.L3)'
  For example,
     self.prevent_l3_port_deletion(...)
  becomes something like
     plugin = directory.get_plugin(constants.L3)
     if plugin:
         plugin.prevent_l3_port_deletion(...)

If the core plugin has relied on the L3Agent the following must also be changed:
- Do not inherit 'l3_rpc_base.L3RpcCallbackMixin' in any '*RpcCallbacks' class.
- Do not be a consumer of the topics.L3PLUGIN topic for RPC.

To use the L3 routing service plugin, add
'neutron.services.l3_router.l3_router_plugin.L3RouterPlugin'
to 'service_plugins' in '/etc/neutron/neutron.conf'.
That is,
service_plugins = neutron.services.l3_router.l3_router_plugin.L3RouterPlugin