What is the principle of OpenStack

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What is OpenStack?

OpenStack is a cloud operating system, which can control large computing, storage, network and other resource pools through the data center. All the management can be done through the front-end interface administrator, and the end user can also deploy resources through the web interface.

Location of OpenStack:

OpenStack is only the control plane of cloud computing system.

OpenStack does not include the data side components of the system, such as hypervisor, storage and network devices, etc.

OpenStack is just the key components of building the cloud: backbone, framework, bus

OpenStack design philosophy:

Open up: open source and reuse existing open source projects as much as possible; don't "reinvent the wheel", but "stand on the shoulders of giants"

Flexibility: do not use any irreplaceable private / commercial components; extensive use of plug-ins for architectural design and implementation

Scalable: consists of multiple independent projects, each containing multiple independent service components; no central architecture, stateless architecture

Nova architecture

Core: providing computing services

IaaS service components for Top3 utilization:

Cinder architecture

Core: provide block storage service

Neutron architecture

Core: providing network services

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