Hello Guillaume Thank you so much for helping me with the SRU uploads.

Flamingo Test Results:

0. Deployed OpenStack Noble/Flamingo (2025.2) using OpenStack Ansible
(1) with HA Masakari. This officially supports Noble+UCA.

root@os-control-0-masakari-api-container-e179e09e:~# dpkg -l | grep masakari
ii  masakari-common               20.0.0-0ubuntu1~cloud0            all
ii  python3-masakari              20.0.0-0ubuntu1~cloud0            all

root@os-control-1-masakari-api-container-254a6b23:~# dpkg -l | grep masakari
ii  masakari-common               20.0.0-0ubuntu1~cloud0            all
ii  python3-masakari              20.0.0-0ubuntu1~cloud0            all

root@os-control-2-masakari-api-container-5b77b572:~# dpkg -l | grep masakari
ii  masakari-common               20.0.0-0ubuntu1~cloud0            all
ii  python3-masakari              20.0.0-0ubuntu1~cloud0            all

root@os-control-0-utility-container-48d03cbd:~# openstack endpoint list | grep 
masakari
| 132202a911234f949a54841bd8e9e6ff | RegionOne | masakari     | instance-ha    
| True    | internal  | http://192.168.100.20:15868/v1/%(tenant_id)s |
| 297f5dc581e4428fb16027779742b76a | RegionOne | masakari     | instance-ha    
| True    | public    | http://192.168.100.21:15868/v1/%(tenant_id)s |
| 6b700d4b0b3c41e0af481638344c7f15 | RegionOne | masakari     | instance-ha    
| True    | admin     | http://192.168.100.20:15868/v1/%(tenant_id)s |


1. Get it configured

openstack segment create nova auto COMPUTE
for x in {0..2}; do openstack segment host create os-compute-${x} COMPUTE SSH 
nova; done

2. Enabled noble-proposed/flamingo and Upgraded masakari packages on all
3 containers and rebooted them:

root@os-control-0-masakari-api-container-e179e09e:~# dpkg -l | grep masakari
ii  masakari-common               20.0.0-0ubuntu1.1~cloud1.1        all
ii  python3-masakari              20.0.0-0ubuntu1.1~cloud1.1        all

3. Utilized the reproducer script (2) and executed it a few times (logs
attached).

3. Check the notification list output and there are no duplicates:

root@os-control-0-utility-container-48d03cbd:~# openstack notification list 
--sort-column generated_time -f value | tail -n  30
fa53334f-d768-4ddd-ad47-79d75447c1a9 2026-09-20T15:29:26.000000 running 
COMPUTE_HOST c357989f-3fea-42e4-81b7-cdab5add2ccc {'event': 'STOPPED', 
'cluster_status': 'OFFLINE', 'host_status': 'NORMAL'}


(1) https://docs.openstack.org/openstack-ansible/2025.2/
(2) https://launchpadlibrarian.net/849768758/lp2028450-reproducer.bash


** Attachment added: "Flamingo Verification Results"
   
https://bugs.launchpad.net/cloud-archive/ussuri/+bug/2146964/+attachment/6001330/+files/flamingo-verification-results.txt

** Tags removed: verification-flamingo-needed
** Tags added: verification-flamingo-done

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https://bugs.launchpad.net/bugs/2146964

Title:
  [SRU] Prevent masakari HA from creating duplicated notifications

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