u/BladyGreg

Hello, this time I have a problem while trying to set up a VM. Everything works and was set up correctly as far I know, but trying to create a server causes an error in Nova conductor I haven't been able to figure out. It persists until a restart and the VM is stuck on "BUILD" status. All config files, passwords, connectivity between nodes has been checked. May I ask for some help?

root@aio-controller ~(keystone)# tail -n 5 /var/log/nova/nova-conductor.log
2026-05-16 16:01:00.899 3427 INFO oslo_service.backend._eventlet.service [None req-9c11cc4e-78d1-4fe3-9962-59cf5153293e - - - - - -] Starting 4 workers
2026-05-16 16:01:00.903 3456 INFO nova.service [-] Starting conductor node (version 32.0.0)
2026-05-16 16:01:00.904 3457 INFO nova.service [-] Starting conductor node (version 32.0.0)
2026-05-16 16:01:00.906 3458 INFO nova.service [-] Starting conductor node (version 32.0.0)
2026-05-16 16:01:00.906 3459 INFO nova.service [-] Starting conductor node (version 32.0.0)
root@aio-controller ~(keystone)# source keystonerc 
root@aio-controller ~(keystone)# openstack server create --flavor m1.tiny --image cirros --security-group secgroup01 --nic net-id=$netID --key-name mykey cirrosnew 
+-------------------------------------+------------------------------------------------------------------------------------------------------+
| Field                               | Value                                                                                                |
+-------------------------------------+------------------------------------------------------------------------------------------------------+
| OS-DCF:diskConfig                   | MANUAL                                                                                               |
| OS-EXT-AZ:availability_zone         | nova                                                                                                 |
| OS-EXT-SRV-ATTR:host                | None                                                                                                 |
| OS-EXT-SRV-ATTR:hostname            | cirrosnew                                                                                            |
| OS-EXT-SRV-ATTR:hypervisor_hostname | None                                                                                                 |
| OS-EXT-SRV-ATTR:instance_name       | instance-00000006                                                                                    |
| OS-EXT-SRV-ATTR:kernel_id           |                                                                                                      |
| OS-EXT-SRV-ATTR:launch_index        | 0                                                                                                    |
| OS-EXT-SRV-ATTR:ramdisk_id          |                                                                                                      |
| OS-EXT-SRV-ATTR:reservation_id      | r-vu0i0p25                                                                                           |
| OS-EXT-SRV-ATTR:root_device_name    | None                                                                                                 |
| OS-EXT-SRV-ATTR:user_data           | None                                                                                                 |
| OS-EXT-STS:power_state              | NOSTATE                                                                                              |
| OS-EXT-STS:task_state               | scheduling                                                                                           |
| OS-EXT-STS:vm_state                 | building                                                                                             |
| OS-SRV-USG:launched_at              | None                                                                                                 |
| OS-SRV-USG:terminated_at            | None                                                                                                 |
| accessIPv4                          |                                                                                                      |
| accessIPv6                          |                                                                                                      |
| addresses                           |                                                                                                      |
| config_drive                        |                                                                                                      |
| created                             | 2026-05-16T14:17:49Z                                                                                 |
| description                         | None                                                                                                 |
| flavor                              | description=, disk='10', ephemeral='0', , id='m1.tiny', is_disabled=, is_public='True', location=,   |
|                                     | name='m1.tiny', original_name='m1.tiny', ram='1024', rxtx_factor=, swap='0', vcpus='1'               |
| hostId                              |                                                                                                      |
| host_status                         |                                                                                                      |
| id                                  | e29bed1f-4630-4094-b547-198e75c8faa1                                                                 |
| image                               | cirros (a09135ed-0d8b-4ac8-bce8-8ca6d1b20654)                                                        |
| key_name                            | mykey                                                                                                |
| locked                              | False                                                                                                |
| locked_reason                       | None                                                                                                 |
| name                                | cirrosnew                                                                                            |
| pinned_availability_zone            | None                                                                                                 |
| progress                            | 0                                                                                                    |
| project_id                          | c872b474c2e54238bd55660a8992e4e5                                                                     |
| properties                          |                                                                                                      |
| scheduler_hints                     |                                                                                                      |
| server_groups                       | []                                                                                                   |
| status                              | BUILD                                                                                                |
| tags                                |                                                                                                      |
| trusted_image_certificates          | None                                                                                                 |
| updated                             | 2026-05-16T14:25:01Z                                                                                 |
| user_id                             | 7e14185c00394d3e8d56ebfcd0119d0a                                                                     |
| volumes_attached                    |                                                                                                      |
+-------------------------------------+------------------------------------------------------------------------------------------------------+
root@aio-controller ~(keystone)# tail -n 5 /var/log/nova/nova-conductor.log
2026-05-16 16:01:00.904 3457 INFO nova.service [-] Starting conductor node (version 32.0.0)
2026-05-16 16:01:00.906 3458 INFO nova.service [-] Starting conductor node (version 32.0.0)
2026-05-16 16:01:00.906 3459 INFO nova.service [-] Starting conductor node (version 32.0.0)
2026-05-16 16:02:00.674 3457 ERROR oslo.messaging._drivers.impl_rabbit [None req-a563165f-39cb-41e1-b70d-1188d41ed766 7e14185c00394d3e8d56ebfcd0119d0a c872b474c2e54238bd55660a8992e4e5 - - default default] Connection failed: [Errno 111] ECONNREFUSED (retrying in 1.0 seconds): ConnectionRefusedError: [Errno 111] ECONNREFUSED
2026-05-16 16:02:01.945 3457 ERROR oslo.messaging._drivers.impl_rabbit [None req-a563165f-39cb-41e1-b70d-1188d41ed766 7e14185c00394d3e8d56ebfcd0119d0a c872b474c2e54238bd55660a8992e4e5 - - default default] Connection failed: [Errno 111] ECONNREFUSED (retrying in 3.0 seconds): ConnectionRefusedError: [Errno 111] ECONNREFUSED
root@aio-controller ~(keystone)# openstack server list
+--------------------------------------+-----------+--------+----------+--------+---------+
| ID                                   | Name      | Status | Networks | Image  | Flavor  |
+--------------------------------------+-----------+--------+----------+--------+---------+
| b4e1442e-b6c4-4452-aea2-e601af0a2552 | cirrosnew | BUILD  |          | cirros | m1.tiny |
+--------------------------------------+-----------+--------+----------+--------+---------+
root@aio-controller ~(keystone)# 

Can I get some help? I checked every configuration file, every log, problems arise only with this command.

root@aio-controller stack(keystone)# su -s /bin/bash placement -c "placement-manage db sync"

root@aio-controller stack(keystone)# su -s /bin/bash nova -c "nova-manage api_db sync"

root@aio-controller stack(keystone)# su -s /bin/bash nova -c "nova-manage cell_v2 map_cell0"

Cell0 is already setup

root@aio-controller stack(keystone)# su -s /bin/bash nova -c "nova-manage db sync"

ERROR: Could not access cell0.

Has the nova_api database been created?

Has the nova_cell0 database been created?

Has "nova-manage api_db sync" been run?

Has "nova-manage cell_v2 map_cell0" been run?

Is [api_database]/connection set in nova.conf?

Is the cell0 database connection URL correct?

Error: Can't load plugin: sqlalchemy.dialects:mysql_pymysql