** Changed in: nova
Status: Fix Committed => Fix Released
** Changed in: nova
Milestone: None => havana-3
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https://bugs.launchpad.net/bugs/1173227
Title:
Nova doesn't refresh network cache when transferring a floating IP
address
Status in OpenStack Compute (Nova):
Fix Released
Bug description:
When Nova associates of disassociates a floating IP address the
network info cache is always refreshed (In both Nova net and Quantum)
due to the @refresh_cache decorator
However if you (re)associate a floating IP which is already associated
with another instance on a Quantum based system then the address is
correcly disassociated first, but the refresh is not trigged for that
instance. As a result Nova will show the same address for two
instances until the periodic clean-up kicks in some minutes later.
Watch what happens with 15.184.41.5 in the following:
$nova list
+--------------------------------------+------------+--------+----------------------------------+
| ID | Name | Status | Networks
|
+--------------------------------------+------------+--------+----------------------------------+
| 52e0533a-0399-4828-b9d7-f223c7e44aca | phil-natty | ACTIVE |
philnet1=12.0.0.4, 15.184.41.5 |
| 8184e9a7-3f56-46bc-8a3a-4fba68f7ce78 | phil2 | ACTIVE |
philnet1=12.0.0.3, 15.184.40.176 |
| 7ab2dff2-6a71-497a-b097-627833ebe680 | phil44 | ACTIVE |
philnet1=12.0.0.5 |
+--------------------------------------+------------+--------+----------------------------------+
$quantum floatingip-list
+--------------------------------------+------------------+---------------------+--------------------------------------+
| id | fixed_ip_address |
floating_ip_address | port_id |
+--------------------------------------+------------------+---------------------+--------------------------------------+
| 29d844c4-78f8-45fd-ae28-d518ea6d41ef | 12.0.0.4 | 15.184.41.5
| 4770c516-6b07-44c2-a07b-eb13a873f80e |
| 9f0f7dfe-4e2f-4a60-8cfd-c7b8c7a10ea9 | 12.0.0.3 | 15.184.40.176
| 58cc4d39-7c20-4a36-bf5f-267a193f6f44 |
+--------------------------------------+------------------+---------------------+--------------------------------------+
$nova add-floating-ip 7ab2dff2-6a71-497a-b097-627833ebe680 15.184.41.5
$quantum floatingip-list
+--------------------------------------+------------------+---------------------+--------------------------------------+
| id | fixed_ip_address |
floating_ip_address | port_id |
+--------------------------------------+------------------+---------------------+--------------------------------------+
| 29d844c4-78f8-45fd-ae28-d518ea6d41ef | 12.0.0.5 | 15.184.41.5
| 3470b721-def6-48a9-8b19-16bd564dd795 |
| 9f0f7dfe-4e2f-4a60-8cfd-c7b8c7a10ea9 | 12.0.0.3 | 15.184.40.176
| 58cc4d39-7c20-4a36-bf5f-267a193f6f44 |
+--------------------------------------+------------------+---------------------+--------------------------------------+
$nova list
+--------------------------------------+------------+--------+----------------------------------+
| ID | Name | Status | Networks
|
+--------------------------------------+------------+--------+----------------------------------+
| 52e0533a-0399-4828-b9d7-f223c7e44aca | phil-natty | ACTIVE |
philnet1=12.0.0.4, 15.184.41.5 |
| 8184e9a7-3f56-46bc-8a3a-4fba68f7ce78 | phil2 | ACTIVE |
philnet1=12.0.0.3, 15.184.40.176 |
| 7ab2dff2-6a71-497a-b097-627833ebe680 | phil44 | ACTIVE |
philnet1=12.0.0.5, 15.184.41.5 |
+--------------------------------------+------------+--------+----------------------------------+
Nova Networking has specific handling for this case in its
associate_floating_ip() method, which relies on the floating_manager returning
the instance uuid of the original instance. It doesn't look like the quantum
client does this, so the quantumv2/api code will probably need to work this out
for itself.
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