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[Expired for neutron because there has been no activity for 60 days.]
** Changed in: neutron
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1912513
Title:
Port creation fails with error IP already allocated but the IP is
available
Status in neutron:
Expired
Bug description:
Description:
=================
When trying to create a new port using an available IP in the allocation pool of a VLAN neutron network, creation fails with error:
IP address 10.41.8.3 already allocated in subnet afb678c6-a152-4f1d-8d77-03b9167520cc
Precondition:
=================
A port using the same IP was previously created and then deleted.
How to reproduce:
=================
I have the following network:
$ openstack network show e30b938b-210d-45c2-894c-95c0c5d08f79
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | |
| created_at | 2020-11-25T10:55:32Z |
| description | |
| dns_domain | |
| id | e30b938b-210d-45c2-894c-95c0c5d08f79 |
| ipv4_address_scope | None |
| ipv6_address_scope | None |
| is_default | False |
| is_vlan_transparent | None |
| location | cloud='', project.domain_id=, project.domain_name=, project.id='606e529ab1bc4b18a6d5dbf8735b9815', project.name=, region_name='us-test', zone= |
| mtu | 1500 |
| name | test |
| port_security_enabled | True |
| project_id | 606e529ab1bc4b18a6d5dbf8735b9815 |
| provider:network_type | vlan |
| provider:physical_network | physnet1 |
| provider:segmentation_id | 2220 |
| qos_policy_id | None |
| revision_number | 11 |
| router:external | External |
| segments | None |
| shared | False |
| status | ACTIVE |
| subnets | afb678c6-a152-4f1d-8d77-03b9167520cc |
| tags | |
| updated_at | 2021-01-20T11:27:57Z |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
And a subnet
$ openstack subnet show afb678c6-a152-4f1d-8d77-03b9167520cc
+----------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+----------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| allocation_pools | 10.41.8.3-10.41.8.4 |
| cidr | 10.41.8.0/29 |
| created_at | 2020-11-25T10:55:34Z |
| description | |
| dns_nameservers | |
| dns_publish_fixed_ip | None |
| enable_dhcp | True |
| gateway_ip | 10.41.8.1 |
| host_routes | |
| id | afb678c6-a152-4f1d-8d77-03b9167520cc |
| ip_version | 4 |
| ipv6_address_mode | None |
| ipv6_ra_mode | None |
| location | cloud='', project.domain_id=, project.domain_name=, project.id='606e529ab1bc4b18a6d5dbf8735b9815', project.name=, region_name='us-test', zone= |
| name | test-subnet |
| network_id | e30b938b-210d-45c2-894c-95c0c5d08f79 |
| prefix_length | None |
| project_id | 606e529ab1bc4b18a6d5dbf8735b9815 |
| revision_number | 9 |
| segment_id | None |
| service_types | |
| subnetpool_id | None |
| tags | |
| updated_at | 2021-01-20T11:27:57Z |
+----------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
Create a port with a fixed ip:
$ openstack port create --debug --network e30b938b-210d-45c2-894c-95c0c5d08f79 --fixed-ip subnet=test-subnet,ip-address=10.41.8.3 test-port
Delete the same port
$ openstack port delete a7a37bbf-129a-4980-a6e8-268c62ea552d
Try to create again the same port with same IP and creation fail
$ openstack port create --debug --network e30b938b-210d-45c2-894c-95c0c5d08f79 --fixed-ip subnet=test-subnet,ip-address=10.41.8.3 test-port
ConflictException: 409: Client Error for url: https://neutron.test.com:9696/v2.0/ports, IP address 10.41.8.3 already allocated in subnet afb678c6-a152-4f1d-8d77-03b9167520cc
ipallocations table show that the IP is actually available:
mysql> select * from ipallocations where network_id="e30b938b-210d-45c2-894c-95c0c5d08f79";
+--------------------------------------+------------+--------------------------------------+--------------------------------------+
| port_id | ip_address | subnet_id | network_id |
+--------------------------------------+------------+--------------------------------------+--------------------------------------+
| 319c6b0d-1970-485a-ade6-914b3fa6abc9 | 10.41.8.4 | afb678c6-a152-4f1d-8d77-03b9167520cc | e30b938b-210d-45c2-894c-95c0c5d08f79 |
+--------------------------------------+------------+--------------------------------------+--------------------------------------+
1 row in set (0.00 sec)
mysql> select * from ipallocations where subnet_id="afb678c6-a152-4f1d-8d77-03b9167520cc";
+--------------------------------------+------------+--------------------------------------+--------------------------------------+
| port_id | ip_address | subnet_id | network_id |
+--------------------------------------+------------+--------------------------------------+--------------------------------------+
| 319c6b0d-1970-485a-ade6-914b3fa6abc9 | 10.41.8.4 | afb678c6-a152-4f1d-8d77-03b9167520cc | e30b938b-210d-45c2-894c-95c0c5d08f79 |
+--------------------------------------+------------+--------------------------------------+--------------------------------------+
1 row in set (0.00 sec)
Expected output
=================
Port is created successfully
Actual output
=================
Port creation fails with:
ConflictException: 409: Client Error for url: https://neutron.test.com:9696/v2.0/ports, IP address 10.41.8.3 already allocated in subnet afb678c6-a152-4f1d-8d77-03b9167520cc
Version:
=================
This is a cloud bionic-ussuri using ovn deployed using charmed OpenStack
Charms revisions:
charm-neutron-api rev 288
charm-neutron-api-plugin-ovn rev 1
charm-ovn-central rev 1
charm-ovn-chassis rev 4
neutron pkgs versions:
ii neutron-common 2:16.1.0-0ubuntu1~cloud0
ii neutron-fwaas-common 1:16.0.0-0ubuntu0.20.04.1~cloud0
ii neutron-plugin-ml2 2:16.1.0-0ubuntu1~cloud0
ii neutron-server 2:16.1.0-0ubuntu1~cloud0
Perceived severity
=================
Critical
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