How to understand the Neutron Server hierarchical Model
This article introduces you how to understand the Neutron Server hierarchical model, the content is very detailed, interested friends can refer to, hope to be helpful to you.
To discuss the various service components of Neutron, first learn about Neutron Server.
The figure above shows the hierarchical structure of Neutron Server, with the following sequence from top to bottom:
Core API
Provide RESTful API to manage network, subnet and port.
Extension API
Provide RESTful API to manage router, load balance, firewall and other resources.
Commnon Service
Authenticate and validate API requests.
Neutron Core
The core handler of Neutron server handles the request by calling the corresponding Plugin.
Core Plugin API
The abstract function set of Core Plugin is defined, and Neutron Core calls the corresponding Core Plgin through this API.
Extension Plugin API
The abstract function set of Service Plugin is defined, and Neutron Core calls the corresponding Service Plugin through this API.
Core Plugin
Implement Core Plugin API, maintain the state of network, subnet and port in the database, and be responsible for calling the corresponding agent to perform related operations on network provider, such as creating network.
Service Plugin
Implement Extension Plugin API, maintain the state of router, load balance, security group and other resources in the database, and be responsible for calling the corresponding agent to perform related operations on network provider, such as creating router.
To sum up, Neutron Server consists of two parts: 1. Provide API services. two。 Run Plugin.
That is Neutron Server = API + Plugins
Understanding the hierarchical model of Neutron Server makes it easier to understand how Neutron supports a variety of network provider.
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