Red Hat Summit Red Hat SummitSupportConsoleDéveloppeursCommencer un essaiContact

Ce contenu n'est pas disponible dans la langue sélectionnée.

Chapter 8. Working with custom roles and services

Red Hat OpenStack Platform usually consists of nodes in pre-defined roles, for example, nodes in Controller roles, Compute roles, and different storage role types. Each of these default roles contains a set of services that you define in the core heat template collection. However, the all-in-one Red Hat OpenStack Platform installation runs on a single node that contains all of the OpenStack services. The Standalone.yaml role file in the /usr/share/openstack-tripleo-heat-templates/roles directory is the configuration file that contains all of the services in the all-in-one installation. You can duplicate and modify the Standalone.yaml role file to enable and disable services in your installation.

The Standalone.yaml file contains a list of services in a role Standalone. Use the following example to understand the syntax of this file: 

- name: Standalone
  description: |
    A standalone role that includes a minimal set of services. Use this role for testing in a single node configuration with the 'openstack tripleo deploy --standalone' command, or with the 'openstack overcloud deploy' command.
  CountDefault: 1
  tags:
    - primary
    - controller
  disable_constraints: True
  ServicesDefault:
    - OS::TripleO::Services::Aide
    - OS::TripleO::Services::AodhApi
    - OS::TripleO::Services::AodhEvaluator
    ...
    - OS::TripleO::Services::Tuned
    - OS::TripleO::Services::Vpp
    - OS::TripleO::Services::Zaqar
Copy to Clipboard Toggle word wrap

Include this role file in the deployment command to configure your stack with the Standalone role that contains the services that you include in the ServicesDefault: section of the role file: 

[stack@all-in-one]$ sudo openstack tripleo deploy --templates -r /usr/share/openstack-tripleo-heat-templates/roles/Standalone.yaml
Copy to Clipboard Toggle word wrap

However, in a production, multi-node Red Hat OpenStack Platform environment, you assign each node with a role that contains a portion of the OpenStack services, rather than including all services on a single node. For example, the default Controller role includes administration, networking, and high availability services, and the default Compute role includes computing services. The default role file in a multi-node environment is the /usr/share/openstack-tripleo-heat-templates/roles_data.yaml file. This file defines the following role types:

  • Controller
  • Compute
  • BlockStorage
  • ObjectStorage
  • CephStorage

Use the following example to understand role syntax in a multi-node environment: 

- name: Controller
  description: |
    Controller role that contains all of the services for database, messaging and network functions.
  ServicesDefault:
    - OS::TripleO::Services::AuditD
    - OS::TripleO::Services::CACerts
    - OS::TripleO::Services::CephClient
    ...
- name: Compute
  description: |
    Basic Compute Node role
  ServicesDefault:
    - OS::TripleO::Services::AuditD
    - OS::TripleO::Services::CACerts
    - OS::TripleO::Services::CephClient
    ...
Copy to Clipboard Toggle word wrap

You must include the role file each time you run the deployment command. You can use the -r argument in the deployment command to override this file and use a custom role file: 

[stack@all-in-one]$ sudo openstack tripleo deploy --templates -r ~/templates/roles_data-custom.yaml
Copy to Clipboard Toggle word wrap

The Standalone.yaml role file in the /usr/share/openstack-tripleo-heat-templates/roles directory is the configuration file that contains all of the services in the all-in-one installation. You can enable or disable individual services.

Procedure

  1. To disable a service, create a new environment file and include the value OS::Heat::None for the service that you want to disable: 

        - OS::TripleO::Services::<SERVICE>: OS::Heat::None
    Copy to Clipboard Toggle word wrap

    Include this environment file in the deployment command.

  2. To enable a service, create a new environment file and remove the value OS::Heat::None from the service that you want to enable: 

        - OS::TripleO::Services::<SERVICE>:
    Copy to Clipboard Toggle word wrap

    Include this environment file in the deployment command.

Retour au début
Red Hat logoGithubredditYoutubeTwitter

Apprendre

Essayez, achetez et vendez

Communautés

À propos de la documentation Red Hat

Nous aidons les utilisateurs de Red Hat à innover et à atteindre leurs objectifs grâce à nos produits et services avec un contenu auquel ils peuvent faire confiance. Découvrez nos récentes mises à jour.

Rendre l’open source plus inclusif

Red Hat s'engage à remplacer le langage problématique dans notre code, notre documentation et nos propriétés Web. Pour plus de détails, consultez le Blog Red Hat.

À propos de Red Hat

Nous proposons des solutions renforcées qui facilitent le travail des entreprises sur plusieurs plates-formes et environnements, du centre de données central à la périphérie du réseau.

Theme

© 2025 Red Hat