理解OpenStack为基础的云集成架构
本文深入探讨了基于OpenStack的云架构的核心组成部分，包括用户交互界面、身份验证流程以及服务间通信机制，详细描绘了最常见且集成为一体的架构模式。
As you can imagine, the actual logical architecture is far more complicated than the conceptual architecture shown above. As with any service-oriented architecture, diagrams quickly become "messy" trying to illustrate all the possible combinations of service communications. In the diagram below, I illustrate what I believe will be the most common, "integrated" architecture of an OpenStack-based cloud.
This picture is consistent with the description above in that:
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End users can interact through a common web interface (Horizon) or directly to each service through their API
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All services authenticate through a common source (facilitated through Keystone)
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Individual services interact with each other through their public APIs (except where privileged administrator commands are necessary)
In the sections below, we'll delve into the architecture for each of the services.
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