Venv command missing on Rocky 9 during overcloud post configure

[Thomas Sell]

During overcloud post configure this happens when there is no venv openstack-cli yet:

TASK [Set up openstack cli virtualenv] ***********************************************************************************************************************************
fatal: [g-stack-1]: FAILED! => {"changed": false, "msg": "Failed to find required executable \"virtualenv\" in paths: /home/stack/.local/bin:/home/stack/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin"}

In file: ansible/baremetal-compute-serial-console.yml

Relevant commit?
https://opendev.org/openstack/kayobe/commit/2f447f65453ff278fd53e5bf7975a5a092378b97#diff-a273731134874ef2c41c86ebb670118603b5fa34

**Environment**:
* OS: Rocky Linux 9.6
* Kolla version: 2025.1

**Possible cause:**
There should be a `virtualenv_command: "python3.{{ ansible_facts.python.version.minor }} -m venv"` here: https://opendev.org/openstack/kayobe/src/commit/ac156f45c309cd15dffaa00735c0cdbd6b40b93a/ansible/baremetal-compute-serial-console.yml#L12-L19

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/kayobe/+/966093

[Thomas Sell (sellth)]

A bit more context. The "virtualenv" command is provided by the python3-virtualenv package. It seems like the Ansible pip module is defaulting to the virtualenv command whenever a specified venv is not already initialised: https://docs.ansible.com/ansible/latest/collections/ansible/builtin/pip_module.html.

The commit mentioned above removed our dependency on this package, I guess because it is not in the default Rocky Linux 9 repositories but EPEL. This is why we need to specify usage of the Python module whenever we check that the openstack-cli (or any other) venv is present.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/kayobe/+/966093
Committed: https://opendev.org/openstack/kayobe/commit/15353c00b3399cb6b94874d0d508cf0874addbef
Submitter: "Zuul (22348)"
Branch: master

commit 15353c00b3399cb6b94874d0d508cf0874addbef
Author: Thomas Sell <email address hidden>
Date: Tue Nov 4 18:06:45 2025 +0100

    Always call virtualenv as a Python module during setup

    Closes-Bug: #2130643
    Change-Id: I39eec23d9ca3f8fe9b8d7e9693082ef5841dcffa
    Signed-off-by: Thomas Sell <email address hidden>

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kayobe 19.0.0.0rc1 Flamingo release candidate.