nova_status

Role Documentation

Welcome to the “nova_status” role documentation.

Role Variables: main.yml

metadata:
  name: Nova Status Upgrade Check
  description: >
    Performs a release-specific readiness check before restarting services with
    new code. This command expects to have complete configuration and access to
    databases and services within a cell. For example, this check may query the
    Nova API database and one or more cell databases. It may also make requests
    to other services such as the Placement REST API via the Keystone service
    catalog

    The nova-status upgrade check command has three standard return codes:

    0 -> All upgrade readiness checks passed successfully and there is nothing to
    do.
    1 -> At least one check encountered an issue and requires further investigation.
          This is considered a warning but the upgrade may be OK.
    2 -> There was an upgrade status check failure that needs to be investigated.
          This should be considered something that stops an upgrade.
  groups:
  - pre-upgrade

Molecule Scenarios

Molecule is being used to test the “nova_status” role. The following section highlights the drivers in service and provides an example playbook showing how the role is leveraged.

Scenario: default

Driver: podman:

Molecule Platform(s)

- name: centos
  hostname: centos
  image: centos/centos:stream8
  registry:
    url: quay.io
  dockerfile: ../../../../.config/molecule/Dockerfile
  pkg_extras: python*-setuptools python*-pyyaml
  volumes:
  - /etc/ci/mirror_info.sh:/etc/ci/mirror_info.sh:ro
  privileged: true
  environment:
    http_proxy: "{{ lookup('env', 'http_proxy') }}"
    https_proxy: "{{ lookup('env', 'https_proxy') }}"
  ulimits:
  - host

Molecule Inventory

hosts:
  all:
    hosts:
      centos:
        ansible_python_interpreter: /usr/bin/python3

Example default playbook

- name: Converge
  hosts: all
  gather_facts: false

  tasks:
  - name: working detection
    include_role:
      name: nova_status

  - name: make validation fail
    block:
    - name: run validation
      include_role:
        name: nova_status
      vars:
        container_cli: docker

    rescue:
    - name: Clear host errors
      meta: clear_host_errors

    - name: Test output
      debug:
        msg: The validation works! End play

    - name: End play
      meta: end_play

  - name: Fail playbook if reached
    fail:
      msg: |
        The nova_status validation didn't properly detect bad upgrade
        status check!