Problem with ressource provider

Marc-Antoine Godde (Student at CentraleSupelec) marc-antoine.godde at student-cs.fr
Tue Jan 18 21:56:24 UTC 2022


Hello,


In our cluster, we have 4 computes running and we have an issue with the number 4.


We can't create VMs on it, we can't migrate VMs to or from that node. VMs are still perfectly working though. After a first diagnosis, it appears that there's a problem with the ressource provider.

Node is declared in the db with:
- name: os-compute-4, uuid: d12ea77b-d678-40ce-a813-d8094cabbbd8



Here are the ressource provider:

- name: os-compute-4, uuid: a9dc2a56-5b2d-49b1-ac47-6d996d2d029a

- name: os-compute-4.openstack.local, uuid: d12ea776-d678-40ce-a813-d8094cabbbd8


In our opinion, os-compute-4.openstack.local shouldn't be there at all. We want to destroy both of the ressource provider and recreate one.


I must also precise that os-compute-4 ressource provider has 0 allocation and os-compute-4.openstack.local only 3 (there’s at least 50 VMs running on it…). Moreover, for these 3 allocations, the server uuid doesn't correspond to any existing VMs. Overall, none of the VMs has a ressource allocation on os-compute-4.


We found the command nova-manage placement heal_allocations on the Internet but we can't find it in any container, maybe deprecated ? The cluster is running Ussuri installed with Openstack-ansible.

If you have any suggestion, any help would be appreciated. Thanks. :)

Best,
Marc-Antoine Godde
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