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[Preethi Dsilva <preethi.dsilva@xxxxxxx>]

** Project changed: neutron => octavia

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https://bugs.launchpad.net/bugs/1614436

Title:
  Creation of loadbalancer fails with plug vip exception

Status in octavia:
  New

Bug description:
  Here is the scenario:
  I have two compete nodes with following bridge mappings:
  Compute node 1:
  1. physnet3:br-hed0 (This is the octavia-mgt-network)
  2. physnet2: br-hed2
  Compute node 2:
  1. physnet3:br-hed0 (This is the octavia-mgt-network)
  2. physnet1:br-hed1
  3. physnet2:br-hed2
  Now if I create a loadbalancer with VIP in physnet1, the NOVA is scheduling the amphora image on compute node1. However as there is no physnet1 mapping in compute node 1, the octavia is failing to plug the amphora image into VIP network.
  Expected result:
  Octavia should internally check if the availability zone on which nova is scheduling the amphora image has the mapping for the required VIP network or not.
  Here is the VIP network details:
  stack@padawan-cp1-c1-m1-mgmt:~/scratch/ansible/next/hos/ansible$ neutron net-show net1
  ---------------------------------------------------------------+
  Field	Value
  ---------------------------------------------------------------+
  admin_state_up	True
  availability_zone_hints	 
  availability_zones	nova
  created_at	2016-07-29T03:45:02
  description	 
  id	cd5a5e69-f810-4f08-ad9f-72f6184754af
  ipv4_address_scope	 
  ipv6_address_scope	 
  mtu	1500
  name	net1
  provider:network_type	vlan
  provider:physical_network	physnet1
  provider:segmentation_id	1442
  router:external	False
  shared	False
  status	ACTIVE
  subnets	115f7f23-68e2-4cba-9209-97d362612a7f
  tags	 
  tenant_id	6b192dcb6a704f72b039d0552bec5e11
  updated_at	2016-07-29T03:45:02
  ---------------------------------------------------------------+
  stack@padawan-cp1-c1-m1-mgmt:~/scratch/ansible/next/hos/ansible$
  Here is the exception from octavia-worker.log:
  "/var/log/octavia/octavia-worker.log" [readonly] 2554L, 591063C 1,1 Top
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher result = func(ctxt, **new_args)
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/octavia/controller/queue/endpoint.py", line 45, in create_load_balancer
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher self.worker.create_load_balancer(load_balancer_id)
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/octavia/controller/worker/controller_worker.py", line 322, in create_load_balancer
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher post_lb_amp_assoc.run()
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/taskflow/engines/action_engine/engine.py", line 230, in run
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher for _state in self.run_iter(timeout=timeout):
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/taskflow/engines/action_engine/engine.py", line 308, in run_iter
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher failure.Failure.reraise_if_any(fails)
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/taskflow/types/failure.py", line 336, in reraise_if_any
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher failures[0].reraise()
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/taskflow/types/failure.py", line 343, in reraise
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher six.reraise(*self._exc_info)
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/taskflow/engines/action_engine/executor.py", line 82, in _execute_task
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher result = task.execute(**arguments)
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/octavia/controller/worker/tasks/network_tasks.py", line 279, in execute
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher loadbalancer.vip)
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/octavia/network/drivers/neutron/allowed_address_pairs.py", line 278, in plug_vip
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher subnet.network_id)
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher File "/opt/stack/venv/octavia-20160727T193208Z/lib/python2.7/site-packages/octavia/network/drivers/neutron/allowed_address_pairs.py", line 93, in _plug_amphora_vip
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher raise base.PlugVIPException(message)
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher PlugVIPException: Error plugging amphora (compute_id: 85e75aeb-4ce8-4f26-89ed-6b6a9a006b12) into vip network cd5a5e69-f810-4f08-ad9f-72f6184754af.
  2016-07-29 03:46:39.043 10434 ERROR oslo_messaging.rpc.dispatcher

  The same issue will arise w.r.t spare pools.

  This  issue is seen in stable/mitaka

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