undercloud_process_count

An Ansible role to check the number of OpenStack processes on the Undercloud

Requirements

This role requires an installed and working Undercloud

Role Variables

• max_process_count: <’8’> – Maximum number of process

Dependencies

No dependencies.

Example Playbook

- hosts: servers
  roles:
     - { role: undercloud-process-count }

License

Apache

Author Information

Red Hat TripleO Validations Team

Full Description

Role Documentation

Welcome to the “undercloud_process_count” role documentation.

Role Defaults

This section highlights all of the defaults and variables set within the “undercloud_process_count” role.

max_process_count: 8

Role Variables: main.yaml

metadata:
  name: Check the number of OpenStack processes on undercloud
  description: >
    The default settings for OpenStack is to run one process (heat-engine,
    keystone, etc.) per CPU core. On a machine with a lot of cores this is
    both unnecessary and can consume a significant amount of RAM, leading
    to crashes due to OOMKiller.
  groups:
  - pre-deployment

Molecule Scenarios

Molecule is being used to test the “undercloud_process_count” 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: Warn developers about the lack of molecule testing
    fail:
      msg: >-
        This role needs molecule tests!