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FusionCloud Solution Description 04

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Implementation Principles

Implementation Principles


Figure 21-3 Logical architecture of AS
Table 21-2 Component details




Console layer


Provides level-1 load balancing.


Provides level-2 load balancing.


ECS_UI (AS) is a console that manages resources based on AS.

Service/API layer


Provides ELB for AS.


AS is a service which can be regarded as the server of the ECS UI (AS) and can invoke FusionSphere OpenStack components. Requests are forwarded to AS through the ECS UI (AS). After processing the requests, AS sends the result to the ECS UI (AS).

Common components

API Gateway

Third-party applications invoke AS APIs through API Gateway.


Displays the task status.

Resource pool


Provides the image management service.


Manages the life cycle of computing instances in the FusionSphere OpenStack system, for example, creating instances in batches, and scheduling or stopping instances on demand.


Provides persistent block storage for running instances. Its pluggable drives facilitate block storage creation and management.


Provides APIs for network connectivity and addressing.

Management domain


Provides Identity and Access Management (IAM) service.

Service OM

Used to manage FusionSphere OpenStack and resource configurations.

Service Flow

Figure 21-4 Service flow diagram

The tasks in all steps are as follows:

  1. The VDC administrator or operator logs in to the ManageOne operation plane.
  2. The VDC administrator or operator performs the IAM authentication on the ManageOne operation plane.
  3. The VDC administrator or operator sets scaling management configuration on AS UI.
  4. AS binds or unbinds to ELB.
  5. Operations related to host groups and ECS specifications are performed on the Service OM.
  6. AS queries the information of Virtual Private Cloud (VPC), subnet, and security group from the VPC module.
  7. AS queries the information of the key pair, volume, image, and network in the FusionSphere OpenStack system.
  8. AS invokes the Combined API to manage VMs.
Updated: 2019-10-23

Document ID: EDOC1100063247

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