I have a multiple external networks environment: | 6fd43d02-221a-44fe-8088-dc5915512c14 | Ext-Net-2 | 1a530334-9dd7-45f3-aa6a-2bb1a5dad562 192.168.1.0/24 | | a2946b29-6be5-4285-9eb9-99625ec2a283 | Ext-Net | dfbc7f6c-c3dd-4c56-a142-48964e2e474c 192.168.2.0/24 |
Each of the external network is served by a single L3-agent. I also declare "gateway_external_network_id" in each l3_agent.ini, and set external_network_bridge. Then, I set up tenants, routers and gateways as follows: TenantA <--> TenantA-Router <--> Ext-Net <--> Internet TenantB <--> TenantB-Router <--> Ext-Net-2 <--> Internet I find that both qrouter-xxx is associated with only one L3-agent, not as expected. I debugged l3-agent-router-scheduler component to see how it works. I found that: Before the router is scheduled, I print agent objects out: <neutron.db.agents_db.Agent[object at 2ba9150] {... configurations=u'{"router_id": "", "gateway_external_network_id": "6fd43d02-221a-44fe-8088-dc5915512c14", ...> The gateway_external_network_id is actual there. And I print router object out: Router: {'status': u'ACTIVE', 'external_gateway_info': None, 'name': u'TenantA-R1', 'gw_port_id': None, 'admin_state_up': True, 'tenant_id': u'b181fd2406784da5895a966da4b74126', 'routes': [], 'id': u'14ff540e-13c6-4aec-8064-a74320f62a0d'} The external_gateway_info is None. Finally, I run "neutron router-show": 7ab3f8f4-89c8-4735-a5c2-4c0a09103bf1 | TenantA-R1 | {"network_id": "6fd43d02-221a-44fe-8088-dc5915512c14", "enable_snat": true} The external_gateway_info is there. So, I guess that: The router scheduler works before I associate with external gateway to that router. in neutron/db/l3_agentschedulers_db.py: def get_l3_agent_candidates(self, sync_router, l3_agents) gateway_external_network_id = agent_conf.get( 'gateway_external_network_id', None) ex_net_id = (sync_router['external_gateway_info'] or {}).get( 'network_id') It compares the two variables to see if they are equal, the l3-agent is candidate. Forget to tell that it happens for HAVANA stable release. I haven't tested master branch yet. 1. A bug or by design? 2. How to run multiple external networks? -- Nick Ma skywalker.n...@gmail.com _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev