Before You Start

Welcome to Enterprise Self-Service Management API Reference (ESM). ESM allows you to manage operations of your Huawei dedicated cloud sites on your own, and offers a broad set of dashboards you can use to gain comprehensive, multi-dimensional data insights into the status and health of those sites.

This document describes how to use REST APIs to perform operations on ESM, such as creating, deleting, and modifying tenants. For all supported operations, see API Overview.

If you plan to access ESM through an API, ensure that you are familiar with ESM concepts. For details, see Service Overview.

Endpoints

An endpoint is the request address for calling an API. Endpoints vary depending on services and regions. For the endpoints of services, Regions and Endpoints.

The following table lists example ESM endpoints. Select a desired one based on service requirements.

Region Name	Region	Endpoint	Protocol
Region - City	region-az	esm-region-az.my******cloud.com	HTTPS

Basic Concepts

Account
A domain is created upon successful registration. The domain has full access permissions for all of its cloud services and resources. It can be used to reset user passwords and grant users permissions. The account is a payment entity and should not be used directly to perform routine management. For security purposes, create users and grant them permissions for routine management.
IAM User
A user is created using a domain to use cloud services. Each user has its own identity credentials (password and access keys).
Region
Regions are divided from the dimensions of geographical location and network latency. Public services, such as Elastic Cloud Server (ECS), Elastic Volume Service (EVS), Object Storage Service (OBS), Virtual Private Cloud (VPC), Elastic IP (EIP), and Image Management Service (IMS), are shared within the same region. Regions are classified as either universal regions or dedicated regions. A universal region provides universal cloud services for common tenants. A dedicated region provides specific services for specific tenants.
AZ
An AZ comprises one or more physical data centers equipped with independent ventilation, fire-suppression, moisture-control, and electricity facilities. Compute, network, storage, and other resources in an AZ are logically divided into multiple clusters. AZs within a region are interconnected using high-speed optical fibers to allow you to build cross-AZ high-availability systems.
Project
Projects group and isolate compute, storage, and network resources across physical regions. A default project is provided for each region, and subprojects can be created under each default project. Users can be granted permissions to access all resources in a specific project. If you need more refined access control, create subprojects under a default project and create resources in subprojects. Then you can assign users the permissions required to access only the resources in the specific subprojects.

Figure 1 Project isolating model
Enterprise Project
Enterprise projects group and manage resources across regions. Resources in different enterprise projects are logically isolated. An enterprise project can include resources in multiple regions, and resources can be added to or removed from enterprise projects.