Hi Marco,

I am not 100% sure, but I think this operation is currently not implemented in the openstack.cloud collection. I'd assume that the openstack.cloud.server_action module should be responsible for an operation like this [1], but `resize` is not in the list of actions.

Regarding  openstack.cloud.resource - I frankly never properly played with it to suggest anything, but if to refer to openstacksdk documentation, it still should be `resize_server`, which is not listed as supported.

Thus, I'd guess your best choice would be to use ansible.builtin.command with supplying `-f json`, to be able to register and parse stdout with | from_json....

[1] https://docs.ansible.com/projects/ansible/latest/collections/openstack/cloud/server_action_module.html#parameter-action
[2] https://docs.openstack.org/openstacksdk/latest/user/proxies/compute.html#modifying-a-server

пн, 2 февр. 2026 г. в 15:45, Marco Favero <marco.favero@csi.it>:
Hello,

   I'm new in this Openstack world and I love Ansible. I'm trying to use
the openstack.cloud Ansible collection to manage virtual machines.

There is no problems in adding or deleting a virtual machine (vm). The
openstack.cloud.server module works very well.

I'm in trouble if I want to update a vm. The server module has only the
"present" state: the resource is not updated after the creation if I
change something in the module parameters.

So, I can't use openstack.cloud.server module in order to change the
flavor or security group of an already existing vm.

The "server_action" module is not useful because it has not update
actions about sg or flavor.

I tried the CRUD "resource" module in some way such as

---
- name: Change resources
   hosts: localhost
   tasks:
     - name: Change flavor to vm
       openstack.cloud.resource:
         cloud: myStack
         service: compute
         type: server
         attributes:
           name: vm-name
           flavor_id: 22b4d2c2-0fff-437b-a67c-009244f89403
         state: present
         wait: true


but the play fails with

fatal: [localhost]: FAILED! => {"changed": false, "extra_data": {"data":
null, "details": "Invalid input for field/attribute server. Value:
{'flavorRef': '22b4d2c2-0fd8-437b-a67c-009244f89403'}. Additional
properties are not allowed ('flavorRef' was unexpected)"

If I try with "flavor" or "security_groups" attributes in place of
"flavor_id" the error doesn't change.

Could you help me?

My env is:

[root@cnt-ansible]/workdir/openstack# ansible-galaxy collection list |
grep openstack
openstack.cloud 2.5.0
[root@cnt-ansible]/workdir/openstack# pip3 list | grep openstack
openstacksdk              4.9.0

ansible [core 2.16.14]


Thank you very much
Kind Regards

   Marco