1. What is OpenStack?
OpenStack is an open source cloud platform management project licensed under the Apache License. OpenStack provides an operating platform or toolset for deploying clouds. Its purpose is to help organizations run clouds as virtual computing or storage services, and provide scalable and flexible cloud computing for public clouds, private clouds, and large and small clouds.
2. Five important components
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1) Nova - Computing Services
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2) Swift - Storage Service
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3) Glance - Mirror Service
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4) Keystone - Authentication Service
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5) Horizon --UI Service
3. The relationship between the components
