yahoo-eng-team team mailing list archive

[Miguel Lavalle <miguel@xxxxxxxxxxxx>]

No, there is no way to see the address assigned to the DHCP port from
the subnet creation response. That is because the subnet creation
operation is independent from the DHCP port creation operation

** Changed in: neutron
       Status: New => Opinion

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https://bugs.launchpad.net/bugs/1740998

Title:
  DHCP Agents of multiple Allocation Pools

Status in neutron:
  Opinion

Bug description:
  Problem :
  OpenStack has down time to establish the ports for DHCP by creating subnet ("enable_dhcp":true), I can not control and know which IP is going to be or apply as DHCP agents. The response can't provide the specific IP which is selected as Attached Device(network:dhcp) immediatly. In my observations and experiments, create the subnet with multiple allocation Pools, the IP will be used as DHCP agents randomly by different allocation pools. I need to use the Get /v2.0/ports to map the networks and subnets repeatly until the first IP is show up in the repsonse.

  If there's a way let us know which IP is used as DHCP agents by
  multiple allocation Pools after geting the response by creating the
  subnet.

  ------

  I sent a post which references the Networking API v2.0 to create a
  subnet within multiple allocation Pools by the network, and I also
  enable DHCP with ture.

  version: mitaka

  POST /v2.0/subnets

  #Response

  {"subnet":{"allocation_pools":[
  {"start":"172.18.0.1","end":"172.18.0.10"},
  {"start":"172.18.0.20","end":"172.18.0.30"}],
  "ipv6_address_mode":null,
  "tenant_id":"b3746b09cacb421cba95ce1afd380762",
  "subnetpool_id":null,
  "gateway_ip":"172.18.0.254",
  "cidr":"172.18.0.0/24",
  "id":"73b8ffaa-6fed-425a-b00b-fb75dffdaa57",
  "updated_at":"2018-01-03T04:18:22",
  "network_id":"0926e907-8e69-4231-ae2f-a051b2d77bf2",
  "dns_nameservers":["8.8.8.8"],
  "description":"","name":"",
  "enable_dhcp":true,
  "created_at":"2018-01-03T04:18:22","ipv6_ra_mode":null,"host_routes":[],"ip_version":4}}

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