Service OverviewCreation of a private image from an ECS or an external image file Public image...

Image Management Service

Service Overview

Issue 11

Date 2020-08-18

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2020. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without priorwritten 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 respectiveholders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei andthe customer. All or part of the products, services and features described in this document may not bewithin 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, guaranteesor 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 thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations 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

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........................................................................................................................166.1 OSs Supported by Different Types of ECSs.................................................................................................................. 166.2 Formats and OSs Supported for External Image Files............................................................................................. 236.3 OSs Supporting UEFI Boot Mode.................................................................................................................................... 27

7 Billing....................................................................................................................................... 30

8 Basic Concepts........................................................................................................................328.1 Region and AZ....................................................................................................................................................................... 328.2 Common Image Formats................................................................................................................................................... 33

9 Related Services.....................................................................................................................36

10 Change History.................................................................................................................... 39

Image Management ServiceService Overview Contents

Issue 11 (2020-08-18) Copyright © Huawei Technologies Co., Ltd. ii

1 What Is Image Management Service?

OverviewAn image is a server or disk template that contains an operating system (OS) orservice data and necessary application software, such as database software. IMSprovides 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 alsocreate a private image from a cloud server or an external image file to easilymigrate workloads to the cloud or on the cloud.

Image TypesImages are classified into public, private, Marketplace images, and shared imagesaccording to their visibility. Public images are provided by the cloud platform,private images are those you created, and shared images are private images thatother tenants shared with you.

Figure 1-1 illustrates the relationships among different types of images.

Image Management ServiceService Overview 1 What Is Image Management Service?

Issue 11 (2020-08-18) Copyright © Huawei Technologies Co., Ltd. 1

https://www.huaweicloud.com/intl/en-us/product/ims.html

Figure 1-1 Image types

Image Type Description

Public image A public image is a standard, widely used image. It contains anOS and preinstalled public applications and is available to allusers. Public images are highly stable and authorized. You canconfigure the application environment or related software asrequired.Public images support the following OSs: Windows, CentOS,Debian, openSUSE, Fedora, Ubuntu, EulerOS, and CoreOS.For more information about public images, see ManagingPublic Images.



https://support.huaweicloud.com/intl/en-us/usermanual-ims/ims_01_0101.html


Image Type Description

Privateimage

A private image is an image that contains an OS or service data,pre-installed public applications, and the owner's privateapplications. It is available only to the user who created it.A private image can be a system disk image, full-ECS image, ordata disk image.● System disk image: contains an OS and pre-installed

application software for running services. You can use asystem disk image to create ECSs and migrate your servicesto the cloud.

● Data disk image: contains only the owner's service data. Youcan also use a data disk image to create EVS disks andmigrate your service data to the cloud.

● Full-ECS image: contains an OS, pre-installed applicationsoftware, and service data. A full-ECS image is created usingdifferential backups and the creation takes a shorter timethan creating a system or data disk image with the same disksize.

Sharedimage

A shared image is an image shared by another tenant with you.For more about shared images, see Sharing Images.

Marketplaceimage

The Marketplace is a store where you can purchase third-partyimages that have the OS, application environment, and softwarepreinstalled. You can use the images to deploy websites andapplication development environments with a few clicks. Noadditional configuration is required.Marketplace images are provided by service providers who haverich experience in configuring and maintaining cloud servers. Allthe images are strictly tested and approved by HUAWEI CLOUDbefore being published.

IMS FunctionsIMS 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 datainjection and disk hot swap) supported by the image

● Private image management, such as modifying image attributes, sharingimages, and replicating images

● Creation of ECSs using an image

Access ModeThe public cloud provides a web-based service management platform(management console). You can access the IMS service through HTTPS-compliant




application programming interfaces (APIs) or the management console. These twoaccess modes differ as follows:

● APIIf you need to integrate IMS into a third-party system for secondarydevelopment, use APIs to access the IMS service. For details, see ImageManagement Service API Reference.

● Management consoleYou can perform other operations provided by IMS on the managementconsole. If you have registered an account on the cloud platform, log in to themanagement console and choose Image Management Service on thehomepage.If you have no account, register an account by following the instructions inAccount Registration Process.



https://support.huaweicloud.com/intl/en-us/api-ims/ims_03_0101.html

https://support.huaweicloud.com/intl/en-us/api-ims/ims_03_0101.html

https://support.huaweicloud.com/intl/en-us/usermanual-account/en-us_topic_0069252244.html

2 Product Advantages

IMS provides convenient, secure, flexible, and efficient management of images.Image deployment involves customizing the OS, applications, drivers, and settingson a single computer and creating an image of it, then automatically deployingthis image to other computers.

Saving Time and Effort● Simultaneously deploying an image on multiple cloud servers 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 providesecure 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 KeyManagement 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 general-purpose running

environment, or use a private image or a market image to deploy acustomized environment.

● You can use IMS to migrate servers to the cloud and on the cloud, and backup server running environments.

Unified● IMS provides a self-service platform for simplifying image management and

maintenance.

Image Management ServiceService Overview 2 Product Advantages


● IMS allows you to batch deploy and upgrade application systems, improvingO&M efficiency and ensuring consistency.

● Public images comply with industry standards. Only initialization componentsare pre-installed. Kernel capabilities are provided by well-known third-partyvendors to facilitate image migration between cloud platforms.

Comparison Between Image-based Deployment and Manual Deployment

Table 2-1 Image-based deployment and manual deployment

Item Image-based Deployment Manual Deployment

Time required 2 to 5 minutes 1 to 2 days

Complexity Quickly create ECSs by usingpublic images, Marketplaceimages, or existing solutions.

Select an appropriate OS,database, and applicationsoftware according to yourbusiness requirements. Then,install and commission them.

Security You only need to identifysources of shared images.The images such as public,private, and market imageshave been strictly tested toensure security and stability.

The security depends on theskills of the R&D or O&Mpersonnel.

Image Management ServiceService Overview 2 Product Advantages


3 Application Scenarios

● Migrating servers to the cloud or on the cloudCreate images (in VHD, VMDK, QCOW2, or RAW format) from existingservers and import the images to the cloud platform for enterprises tomigrate business to the cloud.Provide image sharing and cross-region image replication to enable migrationof ECSs between accounts and regions.

● Deploying a specified software environmentUsing shared images or Marketplace images enables enterprises to quicklybuild specified software environments, without having to manually configureenvironments or installing software. This is especially suitable for Internetstartups.

● Batch deploying software environmentsUse an ECS with an OS, partitions, and software to create a private image,and then use the image to create ECSs in a batch. The created ECSs have thesame configuration as the source ECS.

● Backing up server running environmentsCreate an image from an ECS to back up the ECS. If the software of the ECSbecomes faulty, you can use the image to restore the ECS.

Image Management ServiceService Overview 3 Application Scenarios


4 Features

Private Image LifecycleAfter you create a private image, you can use the image to create ECSs or EVSdisks. You can also share the image with other tenants or replicate the image toother regions. Figure 4-1 shows the lifecycle of private images.

Figure 4-1 Private image lifecycle

Image Management ServiceService Overview 4 Features


Features

Table 4-1 Creating a private image

Feature Description Related Operations

Creating asystem diskimage using anECS or BMS

After creating a server, you cancustomize it (such as installingsoftware and deploying anapplication environment) as youneed and use the updated serverto create a system disk image.You can create ECSs with thecustom configurations from theimage, which frees you fromrepeatedly configuring the ECSs.

● Creating a SystemDisk Image from aWindows ECS

● Creating a SystemDisk Image from aLinux ECS

● Creating a PrivateImage from a BMS

Creating asystem diskimage using anexternal imagefile (importingan image)

You can import the system diskimage of a local server or a serveron another cloud platform toHUAWEI CLOUD. You can use theimported image to create newECSs or BMSs. In addition, youcan reinstall or change the OSs ofexisting ECSs or BMSs.

● Creating a WindowsSystem Disk Imagefrom an ExternalImage File

● Creating a LinuxSystem Disk Imagefrom an ExternalImage File

● Creating a BMSPrivate Image froman External ImageFile

● Quickly Importing anImage File

Creating asystem diskimage using anISO file

Compared with the externalimage files in other formats, anISO file can be used only after itis being decompressed using atool, such as UltraISO orVirtualBox. For details about theimage creation process, see theRelated Operations column inthe table.

● Creating a WindowsSystem Disk Imagefrom an ISO File

● Creating a LinuxSystem Disk Imagefrom an ISO File

● Creating a WindowsImage UsingVirtualBox and anISO File

● Creating a LinuxImage UsingVirtualBox and anISO File









https://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0026.html


https://support.huaweicloud.com/intl/en-us/usermanual-ims/en-us_topic_0030713182.html




















https://support.huaweicloud.com/intl/en-us/bestpractice-ims/ims_bp_0003.html









Creating asystem diskimage usingPacker

Packer is an open-source toolthat can be used to createcustom images. It simplifiesprivate image creation bychanging the image creationprocess to a form in whichmanagement code can beconfigured. In this way, users canflexibly customize images.

Creating a PrivateImage Using Packer

Creating a datadisk imageusing an ECSdata disk

A data disk image only containsuser service data. You can exportservice data on data disks of anECS by creating a data diskimage. A data disk image can beused to create EVS disks tomigrate user service data.

Creating a Data DiskImage from an ECS DataDisk

Creating a datadisk imagefrom anexternal imagefile

You can import the data diskimage of a local server or a serveron another cloud platform toHUAWEI CLOUD through the IMSservice. Then, use the image tocreate an EVS disk.

Creating a Data DiskImage from an ExternalImage File

Creating a full-ECS imageusing an ECS,CSBS backup,or cloud serverbackup

You can use an ECS with datadisks to create a full-ECS image,which contains an OS, applicationsoftware, your service data andcan be used to quickly provisionidentical ECSs for data migration.A full-ECS image can be createdby using an ECS, CSBS backup, orcloud server backup.

● Creating a Full-ECSImage from an ECS

● Creating a Full-ECSImage from a CSBSBackup

● Creating a Full-ECSImage from a CBRBackup

Creating ECSsusing privateimages

After a system disk image or full-ECS image is created, you canclick Apply for Server in the rowthat contains the image to createan ECS.

Creating an ECS from anImage





















Table 4-2 Managing private images


Modifyingimageinformation

To facilitate private imagemanagement, you can modify thefollowing attributes of an image:name, description, minimummemory, maximum memory, andadvanced functions such as NICmulti-queue and SR-IOV driver.

Modifying ImageInformation

Sharing images You can share an image with otherHUAWEI CLOUD accounts. Theseaccounts can use your shared privateimage to quickly create ECSs or EVSdisks.

● Sharing Images● Image Sharing

FAQs

Exportingimages

You can export private images toyour OBS bucket and download themto your local PC for backup.

Exporting Images

Encryptingimages

You can create encrypted images toimprove data security. The encryptionmode is KMS envelope encryption.Encrypted images can be createdfrom external image files orencrypted ECSs.

● How Do HUAWEICLOUD ServicesUse KMS toEncrypt Data?

● CreatingEncrypted Images

Replicating animage within aregion

You can convert encrypted andunencrypted images into each otheror enable some advanced features(such as fast ECS creation from animage) using the in-region imagereplication function.

Replicating ImagesWithin a Region

Replicating animage acrossregions

You can replicate private imagescreated in a region to another region,that it, cross-region image replicationunder the same account. Sharedimages can be replicated acrossregions between different accounts.

Replicating ImagesAcross Regions

Tagging animage

You can tag your private images foreasy management and search.

Tagging an Image

Exportingimageinformation

You can export information aboutthe public and private images in aregion in CSV format, facilitatinglocal maintenance and query.

Exporting ImageInformation

Deleting animage

You can delete images that are nolonger used. Deleting an image doesnot affect the ECSs created from theimage.

Deleting Images






https://support.huaweicloud.com/intl/en-us/ims_faq/faq_20190802_1.html

https://support.huaweicloud.com/intl/en-us/ims_faq/faq_20190802_1.html


https://support.huaweicloud.com/intl/en-us/dew_faq/dew_01_0053.html














5 Constraints

This section describes the constraints on using IMS.

Table 5-1 Constraints

Scenario Item Constraint

Creating aprivateimage

Maximum numberof private imagesthat can be createdin a region

50If you need to create more private images,submit a service ticket to increase yourquota. For details, see How Do I Increasethe Image Quota?

Maximum numberof concurrent tasksfor creating privateimages

40

Creating a systemdisk image from anECS or BMS

● The ECS must be in the Stopped orRunning state.

● The BMS must be in the Stopped stateand must be booted from an EVS diskrather than a local disk.

Creating a systemdisk image from anexternal image file

For details about constraints on externalimage files, see Preparing an Image File(Windows) or Preparing an Image File(Linux).

Creating a systemdisk image from anISO file

● Register the ISO file as an ISO image,use the ISO image to create atemporary ECS, install an OS andrelated drivers on the ECS, and use theECS to create a system disk image.

● The ISO image cannot be replicated,exported, or encrypted.

Image Management ServiceService Overview 5 Constraints


https://support.huaweicloud.com/intl/en-us/ims_faq/ims_faq_0102.html







Creating a data diskimage from an ECSdata disk


● A data disk image can be used to createa data disk only once.

Creating a data diskimage from anexternal image file

The data disk capacity must be no lessthan the data disk size in the image fileand fall within 40–2048 GB.

Creating a full-ECSimage from an ECSor a CSBS or CBRbackup


● A CSBS backup or CBR backup can beused to create a full-ECS image onlyonce.

● The full-ECS image cannot be publishedin the Marketplace or be exported.

● The full-ECS image can only bereplicated across regions.

● Only the full-ECS image created from aCBR backup is shareable with othertenants.

Creating anencrypted imagefrom an encryptedECS or an externalimage file

● An encrypted image cannot be sharedwith other tenants, published in theMarketplace, or replicated acrossregions.

● The key used for encrypting the imagecannot be changed.

Sharing animage

Maximum numberof tenants an imagecan be shared with

System disk image or data disk image: 128Full-ECS image: 10

Maximum numberof shared imagesthat a tenant canreceive

No limit

Private image status Normal




Image sharing ● The images published in theMarketplace and the full-ECS imagescreated from a CSBS backup cannot beshared with others.

● You can share images only within theregion where they reside. To make animage available in a different region,replicate the image to the region andthen share it.

● A shared image can be used to createan ECS only in the same region.

Replicatingan image

Maximum size of animage

128 GB

Maximum numberof concurrentreplication tasks pertenant

5


Replicating animage within aregion

Neither the private images created fromISO files nor the full-ECS images supportin-region replication.

Replicating animage across regions

● A new replication task can be createdonly after the previous replication taskis complete.

● Encrypted images do not support cross-region replication.

Exportingimages

Maximum size of anexported image

1 TBImages larger than 128 GB support onlyfast export.

Formats of exportedimage files

VMDK, VHD, QCOW2, ZVHD, and ZVHD2





Exporting images ● Windows and SUSE public images aswell as private images created fromthese public images cannot beexported.

● If a market image is used to create anECS and then the ECS is used to createa private image, this private imagecannot be exported.

● Both the private images created fromISO files and the full-ECS imagescannot be exported.

● Encrypted images cannot be exportedthrough fast export.

Deleting animage

Private image status A released private image cannot bedeleted.

CreatingECSs

Maximum numberof ECSs that can beconcurrently createdusing a system diskimage

Recommended value: ≤ 100

Tagging animage

Maximum numberof tags that can beadded to a privateimage

10

Other Constraints● If an ECS is frozen due to overdue payment, it cannot be used to create a

private image. You must renew the ECS before using it to create a privateimage.

● A private image created from an x86 ECS cannot be used to create a KunpengECS or change the OS of a Kunpeng ECS.

● A private image containing a 32-bit OS cannot be used to create an ECS with4 GB memory because the total available address space for a 32-bit OS is 4GB.



6 Supported OSs

6.1 OSs Supported by Different Types of ECSsThis section describes the OSs supported by different types of ECSs.

● x86 ECSs● Kunpeng ECSs

x86 ECSs● Table 6-1 lists the OSs supported by the following ECSs:

General-purpose T6General computing S2, S3, S6, and SN3General computing-plus C3Memory-optimized M2, M3, and M6High-performance computing HC2 and H3Disk-intensive D2 and D3

● Table 6-2 lists the OSs supported by the following ECSs:General computing-plus C3ne, C6, and C6sMemory-optimized M3ne

● Table 6-3 lists the OSs supported by the following ECSs:Large-memory E3

● Table 6-4 lists the OSs supported by the following ECSs:Ultra-high I/O I3 and IR3

● For other GPU-accelerated ECSs, see the GPU product description.

NO TE

You are advised to use the official OS release version. Do not tailor or highly customizethe release version. Otherwise, problems may occur.OS vendors update OS release versions irregularly. However, OS vendors have stoppedmaintaining some OS versions and no longer release rectification or security patchesfor the OS versions. You are advised to pay attention to the notices of OS vendors andupdate your OS timely to ensure that your OS runs properly.

Image Management ServiceService Overview 6 Supported OSs


Table 6-1 Supported OS versions-01

OS Type OS Version

Windows Windows Server 2008 R2 Standard\Enterprise\Datacenter\WebWindows Server 2012 Standard\DatacenterWindows Server 2012 R2 Standard\DatacenterWindows Server 2016 Standard\DatacenterWindows Server 2019 Standard\DatacenterWindows Server Core Version 1709

CentOS 64-bit: CentOS 6.10, 6.9, 6.8, 6.7, 6.6, 6.5, 6.4, and 6.364-bit: CentOS 7.6, 7.5, 7.4, 7.3, 7.2, 7.1, and 7.064-bit: CentOS 8.0

Ubuntu 64-bit: Ubuntu 18.04, 16.04, 14.04, and 12.04 Server

EulerOS 64-bit: EulerOS 2.5, 2.3, and 2.2

Red Hat 64-bit: Red Hat 6.10, 6.9, 6.8, 6.7, 6.6, 6.5, and 6.464-bit: Red Hat 7.6, 7.5, 7.4, 7.3, 7.2, 7.1, and 7.064-bit: Red Hat 8.0

SUSE Linux Enterprise 64-bit: SLES 11 SP4 and 11 SP364-bit: SLES 12 SP4, 12 SP3, 12 SP2, 12 SP1, and 1264-bit: SLES 15

Debian 64-bit: Debian 8.0.0–8.10.064-bit: Debian 9.8.0, 9.7.0, 9.6.0, 9.5.0, 9.4.0, 9.3.0, and 9.0.0

openSUSE 64-bit: openSUSE 13.264-bit: openSUSE Leap 15.0 and 15.164-bit: openSUSE Leap 42.3, 42.2, and 42.1

Fedora 64-bit: Fedora 22–29

CoreOS 64-bit: CoreOS 2079.4.0

FreeBSD 64-bit: FreeBSD 11.0

openEuler 64-bit: openEuler 20.03




OS Type OS Version Kernel Version

Windows Windows Server 2008 R2Enterprise\Datacenter\Web\StandardWindows Server 2012 R2Standard\DatacenterWindows Server 2016Standard\DatacenterWindows Server 2019DatacenterWindows Server Version1709 Datacenter

10.0.143936.1.76006.0.60026.1.76006.3.9600

CentOS 64-bit:CentOS 6CentOS 7CentOS 8

2.6.32-754.10.1.e16.x86_642.6.32-696.16.1.el6.x86_642.6.32-754.10.1.el6.x86_642.6.32-754.11.1.e16.x86_643.10.0-514.10.2.el7.x86_643.10.0-693.11.1.el7.x86_643.10.0-862.9.1.el7.x86_643.10.0-957.5.1.e17.x86_643.10.0-957.10.1.e17.x86_64

Ubuntu 64-bit:Ubuntu 14.04 ServerUbuntu 16.04 ServerUbuntu 18.04 Server

4.15.0-52-564.4.0-151-1784.4.0-104-generic4.4.0-141-generic4.4.0-142-generic4.4.0-145-generic4.15.0-34-generic4.15.0-45-generic4.15.0-47-generic

EulerOS 64-bit:EulerOS 2.2EulerOS 2.3

3.10.0-327.62.59.83.h162.x86_643.10.0-514.44.5.10.h198.x86_643.10.0-327.59.59.46.h38.x86_643.10.0-327.62.59.83.h96.x86_643.10.0-327.62.59.83.h128.x86_643.10.0-514.44.5.10.h121.x86_643.10.0-514.44.5.10.h142.x86_64




Red Hat 64-bit:Red Hat 6Red Hat 7

2.6.32-358.6.2.el6.x86_642.6.32-431.20.3.el62.6.32-504.12.2.el62.6.32-573.el6.x86_642.6.32-696.1.1.el6.x86_642.6.32-696.10.2.el6.x86_642.6.32-754.el6.x86_643.10.0-229.1.2.el7.x86_643.10.0-327.36.1.el7.x86_643.10.0-514.36.1.el73.10.0-514.6.1.el7.x86_643.10.0-693.11.6.el7.x86_643.10.0-862.3.2.el7.x86_64

SUSE LinuxEnterprise

64-bit:SLES 11SLES 12

3.0.101-108.18-default3.12.74-60.64.40-default4.4.103-92.53-default4.4.120-92.70-default4.4.121-92.92

Debian 64-bit:Debian 8Debian 9

4.9.168-1+deb9u33.2.0-4-686-pae3.2.0-4-amd643.16.0-4-amd644.9.0-3-amd644.9.0-4-amd644.9.0-8-amd644.9.0-9-amd644.19.0-5-amd64

openSUSE 64-bit:openSUSE 15.0openSUSE 15.1

4.4.103-18.41-default3.0.101-108.18-default

Fedora 64-bit:Fedora 2x

5.1.11-200.fc29.x86_644.5.5-300.fc24.x86_644.20.8-200.fc29.x86_645.2.8-200.fc30.x86_644.8.6-300.fc25.x86_64

openEuler 64-bit:openEuler 20.03

4.19.90-2003.4.0.0036.oel.x86_64





CentOS 64-bit:CentOS 6CentOS 7

2.6.32-754.15.3.e16.x86_642.6.32-696.16.1.el6.x86_642.6.32-754.10.1.el6.x86_642.6.32-754.11.1.e16.x86_643.10.0-514.10.2.el7.x86_643.10.0-693.11.1.el7.x86_643.10.0-862.9.1.el7.x86_643.10.0-957.21.3.e17.x86_643.10.0-957.5.1.e17.x86_643.10.0-957.10.1.e17.x86_64


4.15.0-52-564.4.0-151-1784.4.0-104-generic4.4.0-141-generic4.4.0-142-generic4.4.0-145-generic4.15.0-34-generic4.15.0-45-generic4.15.0-47-generic


3.10.0-327.62.59.83.h162.x86_643.10.0-514.44.5.10.h198.x86_643.10.0-327.59.59.46.h38.x86_643.10.0-327.62.59.83.h96.x86_643.10.0-327.62.59.83.h128.x86_643.10.0-514.44.5.10.h121.x86_643.10.0-514.44.5.10.h142.x86_64




Red Hat 64-bit:Red Hat 6Red Hat 7

2.6.32-358.6.2.el6.x86_642.6.32-431.20.3.el62.6.32-504.12.2.el62.6.32-573.el6.x86_642.6.32-696.1.1.el6.x86_642.6.32-696.10.2.el6.x86_642.6.32-754.el6.x86_643.10.0-229.1.2.el7.x86_643.10.0-327.36.1.el7.x86_643.10.0-514.36.1.el73.10.0-514.6.1.el7.x86_643.10.0-693.11.6.el7.x86_643.10.0-862.3.2.el7.x86_64


64-bit:SLES 11SLES 12

3.0.101-108.18-default3.12.74-60.64.40-default4.4.103-92.53-default4.4.120-92.70-default4.4.121-92.92


4.9.168-1+deb9u33.2.0-4-686-pae3.2.0-4-amd643.16.0-4-amd644.9.0-3-amd644.9.0-4-amd644.9.0-8-amd644.9.0-9-amd644.19.0-5-amd64

openSUSE 64-bit:openSUSE 15.0openSUSE 15.1

4.4.103-18.41-default3.0.101-108.18-default

Fedora 64-bit:Fedora 2x

5.1.11-200.fc29.x86_644.5.5-300.fc24.x86_644.20.8-200.fc29.x86_645.2.8-200.fc30.x86_644.8.6-300.fc25.x86_64





CentOS 64-bit:CentOS 6CentOS 7

2.6.32-754.15.3.e16.x86_642.6.32-696.16.1.el6.x86_642.6.32-754.10.1.el6.x86_642.6.32-754.11.1.e16.x86_643.10.0-514.10.2.el7.x86_643.10.0-693.11.1.el7.x86_643.10.0-862.9.1.el7.x86_643.10.0-957.21.3.e17.x86_643.10.0-957.5.1.e17.x86_643.10.0-957.10.1.e17.x86_64


4.4.0-31-generic4.4.0-131-generic4.4.0-141-generic4.4.0-142-generic4.15.0-29-generic4.15.0-45-generic


3.10.0-327.62.59.83.h128.x86_643.10-514.44.5.10.h142.x86_64


64-bit:SLES 12

4.4.103-92.53-default4.4.120-92.70-default


3.16.0-7-amd643.16.0-4-amd644.9.0-3-amd64

Kunpeng ECSs

Table 6-5 lists the OSs supported by the following ECSs:

● Kunpeng general computing-plus KC1

● Kunpeng memory-optimized KM1


OS Type OS Version

CentOS 64-bit: CentOS 7.6, 7.5, and 7.464-bit: CentOS 8.0



OS Type OS Version

Ubuntu 64-bit: Ubuntu 18.04 Server

EulerOS 64-bit: EulerOS 2.8

Red Hat 64-bit: Red Hat 7.6 and 7.5

SUSE Linux Enterprise 64-bit: SLES 12 SP5 and SP464-bit: SLES 15

openSUSE 64-bit: openSUSE Leap 15.0

Fedora 64-bit: Fedora 29

Debian 64-bit: Debian 10.2.0

openEuler 64-bit: openEuler 20.03

6.2 Formats and OSs Supported for External ImageFiles

Supported File FormatsAn external image file is a file that is in VMDK, VHD, QCOW2, RAW, VHDX, QED,VDI, QCOW, ISO, ZVHD2, or ZVHD format and can be used to create privateimages. Select a format that meets your requirements.

Supported OSsWhen you upload an external image file to an OBS bucket on the managementconsole, the OS contained in the image file will be identified. Table 6-6 lists theOSs supported for external image files.

If the OS cannot be identified or is not supported:

● For Windows, Other_Windows (64_bit) or Other_Windows (32_bit) will beselected during image registration.

● For Linux, Other_Linux (64_bit) or Other_Linux (32_bit) will be selectedduring image registration.

NO TE

Uploading image files containing OSs not listed in Table 6-6 may fail. You are advised tocontact the customer service before uploading these image files.



Table 6-6 Supported OSs

OS Type OS Version

Windows Windows 10 64bitWindows Server 2019 Standard 64bitWindows Server 2019 Datacenter 64bitWindows Server 2016 Standard 64bitWindows Server 2016 Datacenter 64bitWindows Server 2012 R2 Standard 64bitWindows Server 2012 R2 Essentials 64bitWindows Server 2012 R2 Datacenter 64bitWindows Server 2012 Datacenter 64bitWindows Server 2012 Standard 64bitWindows Server 2008 WEB R2 64bitWindows Server 2008 R2 Standard 64bitWindows Server 2008 R2 Enterprise 64bitWindows Server 2008 R2 Datacenter 64bit

SUSE SUSE Linux Enterprise Server 15 SP1 64bitSUSE Linux Enterprise Server 15 64bitSUSE Linux Enterprise Server 12 SP5 64bitSUSE Linux Enterprise Server 12 SP4 64bitSUSE Linux Enterprise Server 12 SP3 64bitSUSE Linux Enterprise Server 12 SP2 64bitSUSE Linux Enterprise Server 12 SP1 64bitSUSE Linux Enterprise Server 11 SP4 64bitSUSE Linux Enterprise Server 11 SP3 64bitSUSE Linux Enterprise Server 11 SP3 32bit

Oracle Linux Oracle Linux Server release 7.6 64bitOracle Linux Server release 7.5 64bitOracle Linux Server release 7.4 64bitOracle Linux Server release 7.3 64bitOracle Linux Server release 7.2 64bitOracle Linux Server release 7.1 64bitOracle Linux Server release 7.0 64bitOracle Linux Server release 6.10 64bitOracle Linux Server release 6.9 64bitOracle Linux Server release 6.8 64bitOracle Linux Server release 6.7 64bitOracle Linux Server release 6.5 64bit



OS Type OS Version

Red Hat Red Hat Linux Enterprise 8.0 64bitRed Hat Linux Enterprise 7.6 64bitRed Hat Linux Enterprise 7.5 64bitRed Hat Linux Enterprise 7.4 64bitRed Hat Linux Enterprise 7.3 64bitRed Hat Linux Enterprise 7.2 64bitRed Hat Linux Enterprise 7.1 64bitRed Hat Linux Enterprise 7.0 64bitRed Hat Linux Enterprise 6.10 64bitRed Hat Linux Enterprise 6.9 64bitRed Hat Linux Enterprise 6.8 64bitRed Hat Linux Enterprise 6.7 64bitRed Hat Linux Enterprise 6.6 64bitRed Hat Linux Enterprise 6.6 32bitRed Hat Linux Enterprise 6.5 64bitRed Hat Linux Enterprise 6.4 64bitRed Hat Linux Enterprise 6.4 32bit

Ubuntu Ubuntu 19.04 server 64bitUbuntu 18.04.2 server 64bitUbuntu 18.04.1 server 64bitUbuntu 18.04 server 64bitUbuntu 16.04.6 server 64bitUbuntu 16.04.5 server 64bitUbuntu 16.04.4 server 64bitUbuntu 16.04.3 server 64bitUbuntu 16.04.2 server 64bitUbuntu 16.04 server 64bitUbuntu 14.04.5 server 64bitUbuntu 14.04.4 server 64bitUbuntu 14.04.4 server 32bitUbuntu 14.04.3 server 64bitUbuntu 14.04.3 server 32bitUbuntu 14.04.1 server 64bitUbuntu 14.04.1 server 32bitUbuntu 14.04 server 64bitUbuntu 14.04 server 32bit



OS Type OS Version

openSUSE openSUSE 42.3 64bitopenSUSE 42.2 64bitopenSUSE 42.1 64bitopenSUSE 15.1 64bitopenSUSE 15.0 64bitopenSUSE 13.2 64bitopenSUSE 11.3 64bit

CentOS CentOS 8.0 64bitCentOS 7.7 64bitCentOS 7.6 64bitCentOS 7.5 64bitCentOS 7.4 64bitCentOS 7.3 64bitCentOS 7.2 64bitCentOS 7.1 64bitCentOS 7.0 64bitCentOS 7.0 32bitCentOS 6.10 64bitCentOS 6.10 32bitCentOS 6.9 64bitCentOS 6.8 64bitCentOS 6.7 64bitCentOS 6.7 32bitCentOS 6.6 64bitCentOS 6.6 32bitCentOS 6.5 64bitCentOS 6.5 32bitCentOS 6.4 64bitCentOS 6.4 32bitCentOS 6.3 64bitCentOS 6.3 32bit



OS Type OS Version

Debian Debian GNU/Linux 10.0.0 64bitDebian GNU/Linux 9.3.0 64bitDebian GNU/Linux 9.0.0 64bitDebian GNU/Linux 8.10.0 64bitDebian GNU/Linux 8.8.0 64bitDebian GNU/Linux 8.7.0 64bitDebian GNU/Linux 8.6.0 64bitDebian GNU/Linux 8.5.0 64bitDebian GNU/Linux 8.4.0 64bitDebian GNU/Linux 8.2.0 64bitDebian GNU/Linux 8.1.0 64bit

Fedora Fedora 30 64bitFedora 29 64bitFedora 28 64bitFedora 27 64bitFedora 26 64bitFedora 25 64bitFedora 24 64bitFedora 23 64bitFedora 22 64bit

EulerOS EulerOS 2.9 64bitEulerOS 2.5 64bitEulerOS 2.3 64bitEulerOS 2.2 64bitEulerOS 2.1 64bitEulerOS 2.0 SP3 64bitEulerOS 2.0 SP2 64bit

openEuler openEuler 20.03 64bit

NeoKylin NeoKylin 7.4 64bitNeoKylin Server release 5.0 U2 64bitNeoKylin Linux Advanced Server release 7.0 U564bit

6.3 OSs Supporting UEFI Boot ModeThe ECS boot mode can be BIOS or UEFI. For details about the differencesbetween the two modes, see How Is BIOS Different from UEFI?




Table 6-7 lists the OSs that support the UEFI boot mode.

Table 6-7 OSs supporting UEFI boot mode

OS Type OS Version

Windows Windows Server 2019 Datacenter 64bit

Windows Server 2019 Standard 64bit


Windows Server 2016 Datacenter 64bit

Windows Server 2012 R2 Standard 64bit

Windows Server 2012 R2 Datacenter 64bit

Windows Server 2012 Essentials R2 64bit


Windows Server 2012 Datacenter 64bit

Windows 10 64bit

Ubuntu Ubuntu 16.04 server 64bit

Ubuntu 14.04 server 64bit

Red Hat Red Hat Linux Enterprise 7.4 64bit

Red Hat Linux Enterprise 7.3 64bit






Oracle Linux Oracle Linux Server release 7.4 64bit

Oracle Linux Server release 6.9 64bit

openSUSE openSUSE 42.1 64bit

SUSE SUSE Linux Enterprise Server 12 SP1 64bit

SUSE Linux Enterprise Server 11 SP3 64bit

Fedora Fedora 24 64bit

Debian Debian GNU/Linux 8.8.0 64bit

CentOS CentOS 7.4 64bit

CentOS 7.0 64bit



OS Type OS Version

CentOS 6.9 64bit

CentOS 6.6 64bit

EulerOS EulerOS 2.3 64bit

EulerOS 2.2 64bit



7 Billing

Billing of Different Image TypesImage Type Billing

Public image Only Windows Server images are charged based oninstance specifications. Other public images are free ofcharge.

Private image When you create a private image, you will be charged forthe OBS, CSBS, or CBR storage.● System disk image or data disk image: The storage space

is charged following the OBS charging rules. The imagesare stored in OBS buckets invisible to users and aremanaged and maintained through IMS.

● Full-ECS image: If the image is created from a CSBS orCBR backup, you will be charged for the space used tostore the CSBS or CBR backup.

Image sharedwith me

● If it is a system or data disk image, you will be chargedfor the OBS storage space.

● If it is a full-ECS image, you will be charged for thespace used to store the CBR backup.NOTE

Full-ECS images created from a CBR backup can be shared butthose created from a CSBS backup cannot.

Marketplaceimage

Determined by the image provider.

Image Management ServiceService Overview 7 Billing


Billing of Private Image OperationsOperation Billing Item

Uploading an externalimage file to an OBSbucket

OBS storage space (You are advised to deleteunneeded image files.)

Creating an ECS from asystem disk image or full-ECS image

EVS disks attached to the created ECS (The systemdisk image and full-ECS image are free of charge.)For example, when you use a full-ECS image (witha 40 GB system disk and 100 GB data disk) tocreate an ECS, you will be charged based on thetotal size of the system disk and data disk.

In-region replication of asystem or data disk image

OBS space for storing the newly replicated image

Cross-region replication ofa system or data diskimage

● Traffic of OBS cross-region replication● OBS space for storing the newly replicated

image

Cross-region replication ofa full-ECS image

● Traffic of CSBS or CBR cross-region replication● Space for storing the CSBS or CBR backup

associated with the newly replicated image

Exporting images OBS space for storing the exported images

Reference● For OBS pricing details, see OBS Pricing Details.● For CSBS pricing details, see CSBS Pricing Details.● For CBR pricing details, see CBR Pricing Details.● For EVS pricing details, see EVS Pricing Details.

Image Management ServiceService Overview 7 Billing


https://www.huaweicloud.com/intl/en-us/pricing/index.html?tab=detail#/obs

https://www.huaweicloud.com/intl/en-us/pricing/index.html?tab=detail#/csbs

https://www.huaweicloud.com/intl/en-us/pricing/index.html?tab=detail#/cbr

https://www.huaweicloud.com/intl/en-us/pricing/index.html?tab=detail#/evs

8 Basic Concepts

8.1 Region and AZ

Concept

A region and availability zone (AZ) identify the location of a data center. You cancreate resources in a specific region and AZ.

● Regions are divided based on 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 sameregion. Regions are classified into universal regions and dedicated regions. Auniversal region provides universal cloud services for common tenants. Adedicated region provides specific services for specific tenants.

● An AZ contains one or more physical data centers. Each AZ has independentcooling, fire extinguishing, moisture-proof, and electricity facilities. Within anAZ, computing, network, storage, and other resources are logically dividedinto multiple clusters. AZs within a region are interconnected using high-speed optical fibers to support cross-AZ high-availability systems.

Figure 8-1 shows the relationship between regions and AZs.

Figure 8-1 Regions and AZs

Image Management ServiceService Overview 8 Basic Concepts


HUAWEI CLOUD provides services in many regions around the world. Select aregion and AZ based on requirements. For more information, see HUAWEI CLOUDGlobal Regions.

Selecting a Region

When selecting a region, consider the following factors:

● Location

It is recommended that you select the closest region for low network latencyand quick access. Regions within the Chinese mainland provide the sameinfrastructure, BGP network quality, as well as resource operations andconfigurations. Therefore, if your target users are on the Chinese mainland,you do not need to consider the network latency differences when selecting aregion.

– If your target users are in Asia Pacific (excluding the Chinese mainland),select the AP-Hong Kong, AP-Bangkok, or AP-Singapore region.

– If your target users are in Africa, select the AF-Johannesburg region.

– If your target users are in Europe, select the EU-Paris region.

– If your target users are in Latin America, select the LA-Santiago region.

NO TE

The LA-Santiago region is located in Chile.

● Resource price

Resource prices may vary in different regions. For details, see Product PricingDetails.

Selecting an AZ

When deploying resources, consider your applications' requirements on disasterrecovery (DR) and network latency.

● For high DR capability, deploy resources in different AZs within the sameregion.

● For low network latency, deploy resources in the same AZ.

Regions and Endpoints

Before you use an API to call resources, specify its region and endpoint. For moredetails, see Regions and Endpoints.

8.2 Common Image FormatsIMS supports multiple image formats, and the system uses the ZVHD or ZVHD2format by default.

Table 8-1 lists the common image formats.



https://www.huaweicloud.com/intl/en-us/global/

https://www.huaweicloud.com/intl/en-us/global/

https://www.huaweicloud.com/intl/en-us/pricing/index.html

https://www.huaweicloud.com/intl/en-us/pricing/index.html

https://developer.huaweicloud.com/intl/en-us/endpoint

Table 8-1 Common image formats

ImageFormat

Description Remarks

ZVHD This is a self-developed format. Ituses the ZLIB compressionalgorithm and supports sequentialread and write.

A universal formatsupported by IaaSOpenStack; a formatsupported for importedand exported images

ZVHD2 This is a self-developed format. Ituses the ZSTD algorithm andsupports lazy loading.

A format for the lazyloading feature; a formatsupported for importedimages

QCOW2 This is a disk image supported bythe QEMU simulator. It is a file thatindicates a block device disk of afixed size. Compared with the RAWformat, the QCOW2 format has thefollowing features:● Supports a lower disk usage.● Supports Copy-On-Write (CoW).

The image file only reflects thechanges of disks.

● Supports snapshots.● Supports zlib compression and

encryption by followingAdvanced Encryption Standard(AES).

A format supported forimported and exportedimages

VMDK VMDK is a virtual disk formatcreated by VMware. A VMDK filerepresents a physical disk drive ofthe virtual machine file system(VMFS) on an ECS.


VHD VHD is a virtual disk file formatprovided by Microsoft. A VHD file isa compressed file stored in the filesystem of the host machine. Itmainly contains a file systemrequired for starting ECSs.




ImageFormat

Description Remarks

VHDX VHDX is a new VHD formatintroduced into Hyper-V of WindowsServer 2012 by Microsoft. Comparedwith the VHD format, VHDX has alarger storage capacity. It providesprotection against data damageduring power supply failures andoptimizes the disk structurealignment mode to preventperformance degradation of newphysical disks in a large sector.

A format supported forimported images

RAW A RAW file can be directly read andwritten by ECSs. This format doesnot support dynamic spaceexpansion and has the best I/Operformance.


QCOW QCOW manages the spaceallocation of an image through thesecondary index table. Thesecondary index uses the memorycache technology and needs thequery operation, which results inperformance loss. The performanceof QCOW is inferior to that ofQCOW2, and the read and writeperformance is inferior to that ofRAW.


VDI VDI is the disk image file formatused by the Virtual BOXvirtualization software of SUN. Itsupports snapshots.


QED The QED format is an evolvedversion of the QCOW2 format. Itsstorage location query mode anddata block size are the same asthose of the QCOW2 format.However, QED implements Copy-On-Write (CoW) in a different wayas it uses a dirty flag to replace thereference count table of QCOW2.




9 Related Services

Figure 9-1 shows the relationships between IMS and other services.

Figure 9-1 IMS relationships with other services

Image Management ServiceService Overview 9 Related Services


Table 9-1 Related services

Service Relationship withIMS

Related Operation

Elastic Cloud Server(ECS)

You can use animage to createECSs or use an ECSto create an image.

● Creating ECSs from anImage

● Creating a System DiskImage from a WindowsECS

● Creating a System DiskImage from a Linux ECS

● Creating a Full-ECSImage from an ECS

Bare Metal Server (BMS) You can use animage to createBMSs or use a BMSto create an image.

● Creating a BMS from aPrivate Image

● Creating a Private Imagefrom a BMS

● Creating a Private Imagefrom an External ImageFile

Object Storage Service(OBS)

Images are stored inOBS buckets.External image filesto be uploaded tothe system arestored in OBSbuckets, and privateimages are exportedto OBS buckets.

● Uploading an ExternalImage File (Windows)

● Exporting Images

Data EncryptionWorkshop (DEW)

Images can beencrypted throughenvelope encryptionof DEW to ensuredata security. Thekeys used forencrypting imagesare stored in DEW.

Encrypting Images

Elastic Volume Service(EVS)

You can create adata disk imageusing a data disk ofan ECS. The createddata disk image canbe used to createother EVS disks.

Creating a Data Disk Imagefrom an ECS Data Disk

Cloud Server BackupService (CSBS)

You can use a CSBSbackup to create afull-ECS image.

Creating a Full-ECS Imagefrom a CSBS Backup












https://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0006.html

https://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0006.html














Service Relationship withIMS

Related Operation

Cloud Backup andRecovery (CBR)

You can use a CBRbackup to create afull-ECS image.

Creating a Full-ECS Imagefrom a CBR Backup

Tag Management Service(TMS)

You can add tags toimages forconvenientclassification andsearch.

Tagging an Image

Cloud Trace Service(CTS)

CTS records IMSoperations forquery, auditing, orbacktrack.

Key IMS OperationsRecorded by CTS








10 Change History

Released On Description

2020-08-18 This issue is the eleventh official release.Added EulerOS 2.9 64bit in Formats and OSs Supported forExternal Image Files.

2020-06-16 This issue is the tenth official release.Added openEuler 20.03 64bit in Formats and OSs Supportedfor External Image Files.

2020-04-30 This issue is the ninth official release.Added the following supported OSs in Formats and OSsSupported for External Image Files: SUSE Linux EnterpriseServer 12 SP5 64bit and SUSE Linux Enterprise Server 15 SP164bit.

2020-02-29 This issue is the eighth official release.Added the following supported OSs in Formats and OSsSupported for External Image Files: Ubuntu 19.04 server 64bit,Oracle Linux Server release 6.10 64bit, CentOS 6.10 32bit, andCentOS 8.0 64bit.

2019-10-30 This issue is the seventh official release.Added the following content:● Product Advantages● Application Scenarios● Features● ConstraintsModified the following content:Added the relationship diagram in Related Services.

2019-08-31 This issue is the sixth official release.Added the description of the LA-Santiago region in Region andAZ.

Image Management ServiceService Overview 10 Change History


Released On Description

2019-08-10 This issue is the fifth official release.● Added the OSs supported for Kunpeng ECSs in OSs

Supported by Different Types of ECSs.● Optimized the description for regions and AZs in Region and

AZ.

2019-06-15 This issue is the fourth official release.Added the following content:● OSs Supporting UEFI Boot Mode● Region and AZModified the following content:Rectified the OS versions supported by all ECS types in OSsSupported by Different Types of ECSs.

2019-04-30 This issue is the third official release.Added supported OSs in Formats and OSs Supported forExternal Image Files, including Ubuntu 18.04.2 server 64bit,Ubuntu 18.04.1 server 64bit, Ubuntu 16.04.6 server 64bit,Ubuntu 16.04.5 server 64bit, Ubuntu 16.04.4 server 64bit,Windows Server 2019 Standard 64bit, Windows Server 2019Datacenter 64bit, and NeoKylin 7.4 64bit.

2019-02-25 This issue is the second official release.Modified the following content:● Related Services● OSs Supported by Different Types of ECSs● Billing

2018-11-20 This issue is the first official release.

Image Management ServiceService Overview 10 Change History


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