Proxmox_vm_info: Failed To Retrieve QEMU VMs Information: 'template'

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Summary

When attempting to use the proxmox_vm_info module with a specific vmid, users may encounter a rare and non-reproducible error:

Failed to retrieve QEMU VMs information: 'template'

This issue is likely caused by the code at https://github.com/ansible-collections/community.general/blob/stable-9/plugins/modules/proxmox_vm_info.py#L204.

Issue Type

Bug Report

Component Name

proxmox_vm_info

Ansible Version

$ ansible --version
ansible [core 2.16.6]
 ...
  python version = 3.11.2 (main, Sep 14 2024, 03:00:30) [GCC 12.2.0] (/workspaces/.venv/bin/python)
  jinja version = 3.1.6
  libyaml = True

Community.general Version

$ ansible-galaxy collection list community.general
Collection        Version
----------------- -------
community.general 9.4.0

Configuration

$ ansible-config dump --only-changed

OS / Environment

No response

Steps to Reproduce

- name: Get vm configuration
  community.general.proxmox_vm_info:
    vmid: "{{ vmid }}"
    config: current
  register: proxmox_vm_info

Expected Results

TASK [deploy_vm : Get vm configuration] ************************ ok: [virtual_machine -> localhost] => "changed" false, "proxmox_vms": [ ... ]

Actual Results

TASK [proxmox_deploy_vm : Get vm configuration] ************************
fatal: [virtual_machine -> localhost]: FAILED! => {"changed": false, "msg": "Failed to retrieve QEMU VMs information: 'template'"}

Possible Solution

The issue may be resolved by modifying the code at https://github.com/ansible-collections/community.general/blob/stable-9/plugins/modules/proxmox_vm_info.py#L204 to use desired_vm.get instead of square brackets:

desired_vm["template"] = proxmox_to_ansible_bool(desired_vm.get("template", 0))

This change would replace the line with:

desired_vm["template"] = proxmox_to_ansible_bool(desired_vm.get("template", 0))

Impact

This change would likely resolve the issue and allow the proxmox_vm_info module to function as expected.

Testing

To test this solution, users can modify the code at https://github.com/ansible-collections/community.general/blob/stable-9/plugins/modules/proxmox_vm_info.py#L204 to use desired_vm.get instead of square brackets. Then, users can re-run the playbook and verify that the issue is resolved.

Conclusion

The proxmox_vm_info module may encounter a rare and non-reproducible error when attempting to retrieve QEMU VMs information. This issue is likely caused by the code at https://github.com/ansible-collections/community.general/blob/stable-9/plugins/modules/proxmox_vm_info.py#L204. A possible solution is to modify the code to use desired_vm.get instead of square brackets. This change would replace the line with:

desired_vm["template"] = proxmox_to_ansible_bool(desired_vm.get("template", 0))

Q: What is the issue with the proxmox_vm_info module?

A: The issue with the proxmox_vm_info module is that it may encounter a rare and non-reproducible error when attempting to retrieve QEMU VMs information. This error is typically displayed as:

Failed to retrieve QEMU VMs information: 'template'

Q: What is the cause of this issue?

A: The cause of this issue is likely due to the code at https://github.com/ansible-collections/community.general/blob/stable-9/plugins/modules/proxmox_vm_info.py#L204. This code uses square brackets to access the "template" key in the desired_vm dictionary.

Q: What is the proposed solution to this issue?

A: The proposed solution to this issue is to modify the code at https://github.com/ansible-collections/community.general/blob/stable-9/plugins/modules/proxmox_vm_info.py#L204 to use desired_vm.get instead of square brackets. This change would replace the line with:

desired_vm["template"] = proxmox_to_ansible_bool(desired_vm.get("template", 0))

Q: Why is this solution proposed?

A: This solution is proposed because it would allow the proxmox_vm_info module to function as expected, even when the "template" key is not present in the desired_vm dictionary. This would prevent the rare and non-reproducible error from occurring.

Q: How can I test this solution?

A: To test this solution, you can modify the code at https://github.com/ansible-collections/community.general/blob/stable-9/plugins/modules/proxmox_vm_info.py#L204 to use desired_vm.get instead of square brackets. Then, you can re-run the playbook and verify that the issue is resolved.

Q: What are the benefits of this solution?

A: The benefits of this solution are that it would allow the proxmox_vm_info module to function as expected, even in rare and non-reproducible scenarios. This would improve the reliability and stability of the module, and prevent the occurrence of the error.

Q: Are there any potential drawbacks to this solution?

A: There are no known potential drawbacks to this solution. However, it is always a good idea to thoroughly test any changes to code before implementing them in a production environment.

Q: How can I implement this solution in my Ansible playbook?

A: To implement this solution in your Ansible playbook, you can modify the code at https://github.com/ansible-collections/community.general/blob/stable-9/plugins/modules/proxmox_vm_info.py#L204 to use desired_vm.get instead of square brackets. Then, you can re-run the playbook and verify that the issue is resolved.

Q: What are the system requirements for this solution?

A: The system requirements for this solution are that you must be running Ansible version 2.16.6 or later, and that you must have the community.general collection installed.

Q: How can I get help if I encounter any issues with this solution?

A: If you encounter any issues with this solution, you can seek help from the Ansible community by posting a question on the Ansible forums or by reaching out to the Ansible support team.