openstack-kolla-ansiblelisted

# OpenStack Kolla-Ansible -- Deployment Engine ## Introduction Kolla-Ansible is the production-grade deployment engine for containerized OpenStack. It uses Ansible playbooks to deploy, configure, and manage Docker containers for each OpenStack service. Every core service -- Keystone, Nova, Neutron, Cinder, Glance, Swift, Heat, Horizon -- plus supporting infrastructure (MariaDB, RabbitMQ, Memcached, HAProxy) runs in its own Docker container, managed through a single unified tool. The Kolla project has two components: **Kolla** builds the Docker images for each OpenStack service. **Kolla-Ansible** deploys those images to target hosts using Ansible. In practice, most operators use pre-built images from the Kolla registry and only interact with Kolla-Ansible for deployment and lifecycle management. Kolla-Ansible supports CentOS Stream 9, Rocky Linux 9, and Ubuntu 22.04 as host operating systems. Container images are available in two variants: `source` (built from OpenStack source code) and `binary` (built from distribution packages). For production stability, `binary` images pinned to a specific OpenStack release are recommended. The deployment lifecycle follows four primary operations: **bootstrap** (prepare the host environment), **deploy** (install and start all services), **reconfigure** (change configuration on a running deployment), and **upgrade** (move to a new OpenStack release). Each operation is idempotent -- running it again produces the same result. ## Bootstra