Which nodes need to be deployed for OpenStack?

The nodes that OpenStack needs to be deployed mainly include the following types:

1. Controller Node: The central node in OpenStack is responsible for managing all components and services in the OpenStack environment. It typically runs key components such as Keystone (authentication service), Nova (compute service), Neutron (network service), and Glance (image service).
2. Compute Node: The compute node in OpenStack is responsible for providing computing resources and running virtual machine instances. It typically runs the Nova Compute service to create, start, and manage virtual machine instances.
3. Storage Node: responsible for providing persistent storage services for storing virtual machine images, volumes, and objects. Storage Nodes can utilize various storage technologies such as Cinder (block storage service) and Swift (object storage service).
4. Network Node: Responsible for providing network services, including network connections for virtual machines and routing network traffic. It typically runs the Neutron service for managing and configuring virtual machine networks.
5. Database Node: The database node is responsible for storing configuration information and status data for various components of OpenStack. Common database options include MySQL, MariaDB, and others.
6. Message Queue Node: responsible for handling the message delivery and communication between different components of OpenStack. Popular options for message queues include RabbitMQ and Kafka.
7. Dashboard node: The Dashboard node is the web interface of OpenStack, which provides a user-friendly graphical management interface. It typically runs the Horizon service.
8. Auxiliary nodes are extra nodes that are used to support and expand the OpenStack environment. For example, additional monitoring nodes, logging nodes, and load balancing nodes can be deployed.

The above are common node types in OpenStack, and actual deployment can be flexibly configured based on needs and scale.