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Creating your private cloud using OpenStack – (3) – Keystone, the Identity Service
- Keystone, the Identity Service in OpenStack provides an API to deal with authentication and service discovery. It combines multiple services that expose endpoints.
- Installation begins by setting up a message queue - RabbitMQ, used by OpenStack to coordinate operations among services.
- Keystone requires Memcached as a token cache, etcd as a distributed configuration store, and a PostgreSQL database to store configurations.
- Bootstrap Keystone with the admin user and project, roles, and a region using a token provider and backend configuration.
- Configure Apache HTTP server with WSGI and create symbolic links to wsgi-keystone.conf files.
- Keystone requires a small environment script to set environment variables.
- By sourcing the admin environment script and requesting a token, authentication is processed without needing a password.
- This article demonstrates how to install Keystone and its dependencies, create the admin user, and configure Apache on the controller node.
- In the next article, the Image (Glance) and the Placement service will be set up.
- The installation covers multiple services that will all run on the controller node.
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