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Message #84961
[Bug 1912513] Re: Port creation fails with error IP already allocated but the IP is available
Since this doesn't appear to be an issue with the charms, I'm going to
remove the project from being affected by this bug and the field
critical designation. However, feel free to re-add it should evidence
present itself otherwise.
** No longer affects: charm-neutron-api
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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:
Incomplete
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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References
