def _metadata_route_update(self, context, router_id): """Update metadata relative routes. The func can only be used when there is no gateway on vdr. """ md_gw_data = self._get_metadata_gw_data(context, router_id) # Setup metadata route on VDR self._update_routes_on_tlr( context, router_id, newnexthop=None, metadata_gateway=md_gw_data) if not md_gw_data: # No more DHCP interfaces on VDR. Remove DHCP binding nsxv_db.delete_vdr_dhcp_binding(context.session, router_id) return md_gw_data
def remove_router_interface(self, context, router_id, interface_info): info = super(nsx_v.NsxVPluginV2, self.plugin).remove_router_interface( context, router_id, interface_info) router_db = self.plugin._get_router(context, router_id) subnet = self.plugin.get_subnet(context, info['subnet_id']) network_id = subnet['network_id'] with locking.LockManager.get_lock(self._get_edge_id(context, router_id)): if router_db.gw_port and router_db.enable_snat: plr_id = self.edge_manager.get_plr_by_tlr_id( context, router_id) self.plugin._update_nat_rules(context, router_db, plr_id) # Open firewall flows on plr self.plugin._update_subnets_and_dnat_firewall( context, router_db, router_id=plr_id) # Update static routes of plr nexthop = self.plugin._get_external_attachment_info( context, router_db)[2] md_gw_data = self._get_metadata_gw_data(context, router_id) self._update_routes(context, router_id, nexthop, md_gw_data) if (subnet['enable_dhcp'] and self.plugin.metadata_proxy_handler and not md_gw_data): # No more DHCP interfaces on VDR. Remove DHCP binding nsxv_db.delete_vdr_dhcp_binding(context.session, router_id) # If DHCP is disabled, this remove cannot trigger metadata change # as metadata is served via DHCP Edge elif (subnet['enable_dhcp'] and self.plugin.metadata_proxy_handler): md_gw_data = self._get_metadata_gw_data(context, router_id) if self._metadata_cfg_required_after_port_remove( context, router_id, subnet): self._metadata_route_update(context, router_id) self.plugin._update_subnets_and_dnat_firewall(context, router_db) # Safly remove interface, VDR can have interface to only one subnet # in a given network. edge_utils.delete_interface( self.nsx_v, context, router_id, network_id, dist=True) # The network would be the last one attached to the VDR if # md_gw_data is None. For such condition, we just keep network # attached to the dhcp edge since the dhcp edge is a pure dhcp # support edge now if (self.plugin.metadata_proxy_handler and subnet['enable_dhcp'] and md_gw_data): # Detach network from VDR-dedicated DHCP Edge vdr_dhcp_binding = nsxv_db.get_vdr_dhcp_binding_by_vdr( context.session, router_id) # A case where we do not have a vdr_dhcp_binding indicates a DB # inconsistency. We check for this anyway, in case that # something is broken. if vdr_dhcp_binding: self.edge_manager.reset_sysctl_rp_filter_for_vdr_dhcp( context, vdr_dhcp_binding['dhcp_edge_id'], network_id) self.edge_manager.remove_network_from_dhcp_edge( context, network_id, vdr_dhcp_binding['dhcp_edge_id']) else: LOG.error(_LE('VDR DHCP binding is missing for %s'), router_id) # Reattach to regular DHCP Edge self.edge_manager.create_dhcp_edge_service( context, network_id, subnet) address_groups = ( self.plugin._create_network_dhcp_address_group(context, network_id)) self.edge_manager.update_dhcp_edge_service( context, network_id, address_groups=address_groups) return info