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[Stephen Ma <stephen.ma@xxxxxx>]

Public bug reported:

An in-use dhcp-port can be deleted by a tenant:

For example:


stack@Controller:~/DEVSTACK/user-1$ neutron net-list
+--------------------------------------+-----------+--------------------------------------------------+
| id                                   | name      | subnets                                          |
+--------------------------------------+-----------+--------------------------------------------------+
| 90b34c78-9204-4a2f-8c23-a0f8d5676b6d | public    | a90927be-72a4-47d1-8285-ba5bc403d99a             |
| cdb1392e-b9a2-4d85-b736-a729235b4b82 | user-3net | 13a4c458-2c00-4da7-9f68-97b0d6a0a74b 10.1.2.0/24 |
+--------------------------------------+-----------+--------------------------------------------------+
stack@DVR-Controller:~/DEVSTACK/user-1$ neutron port-list --network-id cdb1392e-b9a2-4d85-b736-a729235b4b82 --device_owner 'network:dhcp'
+--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+
| id                                   | name | mac_address       | fixed_ips                                                                       |
+--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+
| ed9bf7f4-e5df-4543-ab9c-b9a7885fed68 |      | fa:16:3e:36:aa:1a | {"subnet_id": "13a4c458-2c00-4da7-9f68-97b0d6a0a74b", "ip_address": "10.1.2.3"} |
+--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+
stack@Controller:~/DEVSTACK/user-1$
stack@Controller:~/DEVSTACK/user-1$ cd ../manage
stack@Controller:~/DEVSTACK/manage$ ./os_admin neutron dhcp-agent-list-hosting-net cdb1392e-b9a2-4d85-b736-a729235b4b82
+--------------------------------------+------------+----------------+-------+
| id                                   | host       | admin_state_up | alive |
+--------------------------------------+------------+----------------+-------+
| 674ffd44-f4a6-4695-b24c-59ef02d9cbd8 | Controller | True           | :-)   |
+--------------------------------------+------------+----------------+-------+

As an user of the tenant:

stack@Controller:~/DEVSTACK/manage$ neutron port-delete ed9bf7f4-e5df-4543-ab9c-b9a7885fed68
Deleted port: ed9bf7f4-e5df-4543-ab9c-b9a7885fed68

stack@Controller:~/DEVSTACK/manage$ neutron port-list --network-id
cdb1392e-b9a2-4d85-b736-a729235b4b82 --device_owner 'network:dhcp'

stack@Controller:~/DEVSTACK/manage$


The network is still scheduled with the same dhcp agent:
stack@Controller:~/DEVSTACK/manage$ ./os_admin neutron dhcp-agent-list-hosting-net cdb1392e-b9a2-4d85-b736-a729235b4b82
/home/stack/DEVSTACK/manage
+--------------------------------------+------------+----------------+-------+
| id                                   | host       | admin_state_up | alive |
+--------------------------------------+------------+----------------+-------+
| 674ffd44-f4a6-4695-b24c-59ef02d9cbd8 | Controller | True           | :-)   |
+--------------------------------------+------------+----------------+-------+


The port deletion should not be allowed.  This makes the configuration of the qdhcp namespace on the controller node inconsistent with the databse 

information.  The tap device taped9bf7f4-e5 still in the namespace but
the port is no longer found in the database.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1373660

Title:
  An in-use dhcp port can be deleted

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  An in-use dhcp-port can be deleted by a tenant:

  For example:

  
  stack@Controller:~/DEVSTACK/user-1$ neutron net-list
  +--------------------------------------+-----------+--------------------------------------------------+
  | id                                   | name      | subnets                                          |
  +--------------------------------------+-----------+--------------------------------------------------+
  | 90b34c78-9204-4a2f-8c23-a0f8d5676b6d | public    | a90927be-72a4-47d1-8285-ba5bc403d99a             |
  | cdb1392e-b9a2-4d85-b736-a729235b4b82 | user-3net | 13a4c458-2c00-4da7-9f68-97b0d6a0a74b 10.1.2.0/24 |
  +--------------------------------------+-----------+--------------------------------------------------+
  stack@DVR-Controller:~/DEVSTACK/user-1$ neutron port-list --network-id cdb1392e-b9a2-4d85-b736-a729235b4b82 --device_owner 'network:dhcp'
  +--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+
  | id                                   | name | mac_address       | fixed_ips                                                                       |
  +--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+
  | ed9bf7f4-e5df-4543-ab9c-b9a7885fed68 |      | fa:16:3e:36:aa:1a | {"subnet_id": "13a4c458-2c00-4da7-9f68-97b0d6a0a74b", "ip_address": "10.1.2.3"} |
  +--------------------------------------+------+-------------------+---------------------------------------------------------------------------------+
  stack@Controller:~/DEVSTACK/user-1$
  stack@Controller:~/DEVSTACK/user-1$ cd ../manage
  stack@Controller:~/DEVSTACK/manage$ ./os_admin neutron dhcp-agent-list-hosting-net cdb1392e-b9a2-4d85-b736-a729235b4b82
  +--------------------------------------+------------+----------------+-------+
  | id                                   | host       | admin_state_up | alive |
  +--------------------------------------+------------+----------------+-------+
  | 674ffd44-f4a6-4695-b24c-59ef02d9cbd8 | Controller | True           | :-)   |
  +--------------------------------------+------------+----------------+-------+

  As an user of the tenant:

  stack@Controller:~/DEVSTACK/manage$ neutron port-delete ed9bf7f4-e5df-4543-ab9c-b9a7885fed68
  Deleted port: ed9bf7f4-e5df-4543-ab9c-b9a7885fed68

  stack@Controller:~/DEVSTACK/manage$ neutron port-list --network-id
  cdb1392e-b9a2-4d85-b736-a729235b4b82 --device_owner 'network:dhcp'

  stack@Controller:~/DEVSTACK/manage$

  
  The network is still scheduled with the same dhcp agent:
  stack@Controller:~/DEVSTACK/manage$ ./os_admin neutron dhcp-agent-list-hosting-net cdb1392e-b9a2-4d85-b736-a729235b4b82
  /home/stack/DEVSTACK/manage
  +--------------------------------------+------------+----------------+-------+
  | id                                   | host       | admin_state_up | alive |
  +--------------------------------------+------------+----------------+-------+
  | 674ffd44-f4a6-4695-b24c-59ef02d9cbd8 | Controller | True           | :-)   |
  +--------------------------------------+------------+----------------+-------+

  
  The port deletion should not be allowed.  This makes the configuration of the qdhcp namespace on the controller node inconsistent with the databse 

  information.  The tap device taped9bf7f4-e5 still in the namespace but
  the port is no longer found in the database.

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