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Image Management Service Image Management Service Service Overview Issue 11 Date 2020-08-18 HUAWEI TECHNOLOGIES CO., LTD. Copyright © Huawei Technologies Co., Ltd. 2021. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied. Issue 11 (2020-08-18) Copyright © Huawei Technologies Co., Ltd. i Image Management Service Service Overview Contents Contents 1 What Is Image Management Service?................................................................................1 2 Product Advantages................................................................................................................ 5 3 Application Scenarios............................................................................................................. 7 4 Features..................................................................................................................................... 8 5 Constraints.............................................................................................................................. 12 6 Supported OSs........................................................................................................................16 6.1 OSs Supported by Different Types of ECSs.................................................................................................................. 16 6.2 Formats and OSs Supported for External Image Files............................................................................................. 23 6.3 OSs Supporting UEFI Boot Mode.................................................................................................................................... 28 7 Billing....................................................................................................................................... 30 8 Basic Concepts........................................................................................................................32 8.1 Region and AZ....................................................................................................................................................................... 32 8.2 Common Image Formats................................................................................................................................................... 33 9 Related Services.....................................................................................................................36 10 Change History.................................................................................................................... 39 Issue 11 (2020-08-18) Copyright © Huawei Technologies Co., Ltd. ii Image Management Service Service Overview 1 What Is Image Management Service? 1 What Is Image Management Service? Overview An image is a server or disk template that contains an operating system (OS) or service data and necessary application software, such as database software. IMS provides public, private, Marketplace, and shared images. Image Management Service (IMS) allows you to manage the lifecycle of images. You can create ECSs or BMSs from a public, private, or shared image. You can also create a private image from a cloud server or an external image file to easily migrate workloads to the cloud or on the cloud. Image Types Images are classified into public, private, Marketplace, and shared images. Public images are provided by the cloud platform, private images are those you created, and shared images are private images that other tenants shared with you. Figure 1-1 illustrates the relationships among different types of images. Issue 11 (2020-08-18) Copyright © Huawei Technologies Co., Ltd. 1 Image Management Service Service Overview 1 What Is Image Management Service? Figure 1-1 Image types Image Type Description Public image A public image is a standard, widely used image. It contains an OS and preinstalled public applications and is available to all users. Public images are highly stable and authorized. You can configure the application environment or related software as needed. Public images support the following OSs: Windows, CentOS, Debian, openSUSE, Fedora, Ubuntu, EulerOS, and CoreOS. For more information about public images, see Managing Public Images. Issue 11 (2020-08-18) Copyright © Huawei Technologies Co., Ltd. 2 Image Management Service Service Overview 1 What Is Image Management Service? Image Type Description Private A private image is an image that contains an OS or service data, image pre-installed public applications, and the owner's private applications. It is available only to the user who created it. A private image can be a system disk image, data disk image, or full-ECS image. ● System disk image: contains an OS and pre-installed application software for running services. You can use a system disk image to create ECSs and migrate your services to the cloud. ● Data disk image: contains only the owner's service data. You can use a data disk image to create EVS disks and migrate your service data to the cloud. ● Full-ECS image: contains an OS, pre-installed application software, and service data. A full-ECS image is created using differential backups and the creation takes a shorter time than creating a system or data disk image with the same size. Shared A shared image is a private image other users share with you. image For more information about shared images, see Sharing Images. Marketplace The Marketplace is a store where you can purchase third-party image images that have the OS, application environment, and software preinstalled. You can use the images to deploy websites and application development environments with a few clicks. No additional configuration is required. Marketplace images are provided by service providers who have rich experience in configuring and maintaining cloud servers. All the images are strictly tested and approved by HUAWEI CLOUD before being published. IMS Functions IMS provides: ● Public images that use common OSs ● Creation of a private image from an ECS or an external image file ● Public image management, such as searching images by OS type, name, or ID, and viewing the image ID, system disk size, and features (such as user data injection and disk hot swap) supported by the image ● Private image management, such as modifying image attributes, sharing images, and replicating images ● Creation of ECSs using an image Issue 11 (2020-08-18) Copyright © Huawei Technologies Co., Ltd. 3 Image Management Service Service Overview 1 What Is Image Management Service? Access Mode The public cloud provides a web-based service management platform (management console). You can access the IMS service through the management console or HTTPS APIs. These two access modes differ as follows: ● API If you need to integrate IMS into a third-party system for secondary development, use APIs to access the IMS service. For details, see Image Management Service API Reference. ● Management console For other purposes, use the management console. Log in to the management console and choose Computing > Image Management Service on the homepage. If you do not have a HUAWEI CLOUD account, register one before logging in to the management console. For details about how to register an account, see Account Registration Process. Issue 11 (2020-08-18) Copyright © Huawei Technologies Co., Ltd. 4 Image Management Service Service Overview 2 Product Advantages 2 Product Advantages IMS provides convenient, secure, flexible, and efficient management of images. By using images, you can deploy services more easily and securely in a shorter time. Saving Time and Effort ● Service deployment on cloud servers batch created from images takes much less time and makes this task much easier. ● A private image can be created from an ECS, an external image file, or the system disk or data disks of an ECS or BMS. ● Private images can be transferred between accounts, regions, or cloud platforms through image sharing, replication, and export. Secure ● Public images use Huawei EulerOS and mainstream OSs such as Windows Server, Ubuntu, and CentOS. These OSs have been strictly tested to provide secure and stable services. ● Image files are stored in multiple copies on Object Storage Service (OBS), providing high data reliability and durability. ● Private images can be encrypted through envelope encryption of Key Management Service (KMS), ensuring data security. Flexible ● You can manage images through a management console or API. ● You can use a public image to deploy a
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