service overview - huawei cloud · table 4-2 disk-intensive bms specifications flavor name/id cpu...

Bare Metal Server

Service Overview

Issue 09

Date 2020-07-15

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 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 09 (2020-07-15) Copyright © Huawei Technologies Co., Ltd. i

Contents

1 What Is BMS?............................................................................................................................1

2 BMS Advantages...................................................................................................................... 5

3 Application Scenarios............................................................................................................. 6

4 Instance......................................................................................................................................74.1 Instance Family........................................................................................................................................................................ 74.2 x86 V4 BMS with Intel Broadwell CPU............................................................................................................................ 74.3 x86 V5 BMS with Intel Skylake CPU...............................................................................................................................114.4 x86 V6 BMS with Intel Cascade Lake CPU................................................................................................................... 144.5 Kunpeng V1 BMS.................................................................................................................................................................. 154.6 Lifecycle.................................................................................................................................................................................... 16

5 Image....................................................................................................................................... 195.1 Overview.................................................................................................................................................................................. 195.2 OSs Supported by Different Types of BMSs.................................................................................................................215.3 Formats and OSs Supported for External Image Files............................................................................................. 26

6 EVS Disk................................................................................................................................... 32

7 Network...................................................................................................................................34

8 Security.................................................................................................................................... 398.1 License Type............................................................................................................................................................................ 398.2 Security Group....................................................................................................................................................................... 398.3 Cloud-Init................................................................................................................................................................................. 418.4 Key Pair and Password........................................................................................................................................................ 428.5 Access Control........................................................................................................................................................................ 43

9 Billing....................................................................................................................................... 449.1 Billing........................................................................................................................................................................................ 44

10 Region and AZ......................................................................................................................46

11 Related Services...................................................................................................................48

12 Supported Features and Restrictions............................................................................. 50

13 Change History.................................................................................................................... 52

Bare Metal ServerService Overview Contents

Issue 09 (2020-07-15) Copyright © Huawei Technologies Co., Ltd. ii

1 What Is BMS?Overview

A Bare Metal Server (BMS) features both the scalability of VMs and highperformance of physical servers. It provides dedicated servers on the cloud,delivering the performance and security required by core databases, criticalapplications, high-performance computing (HPC), and Big Data.

The BMS self-service feature allows you to apply for and use a BMS on demand.To apply for a BMS, you need to specify the server type, image, required network,and other configurations. You can obtain the BMS you require within 30 minutes.You can focus on your business without worrying about the server supply or O&M.

System ArchitectureBMS works with other cloud services to provide computing, storage, network, andimage functions.

● BMSs are deployed in multiple availability zones (AZs) connected with eachother through an internal network. If an AZ becomes faulty, other AZs in thesame region will not be affected.

● With the Virtual Private Cloud (VPC) service, you can build a dedicatednetwork, set subnets and security groups, and allow the VPC to communicatewith the external network through an EIP (bandwidth support required).

● With the Image Management Service (IMS), you can install OSs on BMSs orcreate BMSs using private images for rapid service deployment.

● Elastic Volume Service (EVS) provides storage and Volume Backup Service(VBS) provides data backup and restoration.

● Cloud Eye is a key measure to monitor BMS performance, reliability, andavailability. Using Cloud Eye, you can view BMS resource usage in real time.

● Cloud Backup and Recovery (CBR) backs up data for EVS disks and BMSs, anduses snapshot backups to restore the EVS disks and BMSs.

Bare Metal ServerService Overview 1 What Is BMS?

Issue 09 (2020-07-15) Copyright © Huawei Technologies Co., Ltd. 1

Figure 1-1 System architecture

BMSs, Physical Servers, and ECSs

Table 1-1 compares BMSs, physical servers, and ECSs. Y indicates supported and Nindicates unsupported.

NO TE

BMSs have all the features and advantages of physical servers. Your applications can accessthe physical CPU and memory without any virtualization overhead.

Table 1-1 Comparison between BMSs, physical servers, and ECSs

Category Function BMS PhysicalServer

ECS

Provisioning Automaticprovisioning

Y N Y

Computing No featureloss

Y Y N

Noperformanceloss

Y Y N

Exclusiveresources

Y Y N

Storage Local storage Y Y N



Category Function BMS PhysicalServer

ECS

Booting froman EVS disk(system disk)

Y N Y

Using animage (freefrom OSinstallation)

Y N Y

Network VPC Y N Y

Communication betweenphysicalservers andVMs in a VPC

Y N Y

Managementand control

Consistentremote loginexperience asVMs

Y N Y

Monitoringand auditingof keyoperations

Y N Y

Related Concepts● Instance Family

● Region and AZ

● BMS Types

● Image

● BMS Networks

● EIP

Access Methods

The public cloud provides a web-based service management system (managementconsole). You can access BMS through the management console or HTTPS APIs.The two access methods differ as follows:

● API

If you want to integrate BMS into a third-party system for secondarydevelopment, use APIs to access the BMS service.

● Management console



https://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0011.html

For all other purposes, use the management console. Log in to themanagement console and choose Computing > Bare Metal Server on thehomepage.If you do not have a HUAWEI CLOUD account, register one before logging into the management console. For details about how to register an account, seeMaking Preparations.



https://support.huaweicloud.com/intl/en-us/qs-bms/bms_01_0014.html

2 BMS AdvantagesHigh Security and Reliability

BMS allows you to use dedicated computing resources, add servers to VPCs andsecurity groups for network isolation, and integrate related components for serversecurity. The BMSs running on the QingTian architecture can use EVS disks, whichcan be backed up for restoration. BMS interconnects with Dedicated StorageService (DSS) to ensure the data security and reliability required by enterpriseservices.

High PerformanceBMS has no virtualization overhead, enabling dedicated computing resources forservice running. Running on QingTian, a hardware-software synergy architecturedeveloped by Huawei, BMS supports high-bandwidth, low-latency cloud storageand cloud network access, meeting the deployment density and performancerequirements of critical services such as enterprise databases, big data, containers,HPC, and AI.

Quick Provisioning and Unified O&MHardware-based acceleration provided by the QingTian architecture enables EVSdisks to be used as system disks. The required BMSs can be provisioned withinminutes after you submit an order. You can manage your BMSs through theirlifecycle from the management console or using open APIs with SDKs.

Quick Integration of Cloud Services and SolutionsBased on the unified VPC model, cloud services and database, big data, container,HPC, and AI solutions can be quickly integrated to run on BMSs, improving thecloud transformation efficiency.

Bare Metal ServerService Overview 2 BMS Advantages


3 Application ScenariosHigh Security

Financial and security industries have high compliance requirements, and somecustomers have strict data security requirements. The BMS service ensuresexclusive, dedicated resource usage, data isolation, as well as operationmonitoring and tracking.

High-Performance ComputingCertain scenarios, such as supercomputing centers and DNA sequencing, need toprocess a large amount of data. Therefore, they have high computingperformance, stability, and timeliness requirements, all of which BMSs can meet.

Core DatabasesSome critical database services cannot be deployed on VMs and must be deployedon physical servers that feature dedicated resources, isolated networks, andassured performance. The BMS service provides high-performance serversdedicated for individual users, meeting isolation and performance requirements.

Mobile AppsKunpeng-powered BMSs are fully compatible with ARM instruction sets ofterminals and provide a one-stop solution for the development, testing, launch,and usage phases of mobile apps, especially mobile phone games.

Bare Metal ServerService Overview 3 Application Scenarios


4 Instance4.1 Instance Family

OverviewAn instance is a purchased BMS. Different instance types provide varied computingcapabilities, storage space, and network performance. You can select a type thatmeets your service requirements. After you purchase a BMS, you can performoperations, such as starting, stopping, and performing in-band monitoring.

BMS TypesHUAWEI CLOUD provides BMSs with x86 or Kunpeng CPU. Huawei-developedhigh-performance physical servers with exclusive optimization algorithms providea reliable hardware environment for all the BMSs.

● x86 V4 BMS with Intel Broadwell CPU (no more provisioning)● x86 V5 BMS with Intel Skylake CPU (no more provisioning)● x86 V6 BMS with Intel Cascade Lake CPU● Kunpeng V1 BMS with Kunpeng 920 CPU

Remarks● If a BMS uses local disks, its system disk is configured as RAID 1 and data

disks are configured as RAID 0 by default. The RAID configuration of thesystem disk cannot be changed. To change the RAID configuration of datadisks, contact the administrator.

4.2 x86 V4 BMS with Intel Broadwell CPU

CA UTION

x86 V4 BMSs will no longer be provisioned.

Bare Metal ServerService Overview 4 Instance


● General-purposeThis BMS type provides general compute, storage, and network specificationsand is ideal for systems that have general requirements for performance butrequire dedicated resources and isolated networks, such as databases, coreERP systems, and financial systems.

Table 4-1 General-purpose BMS specifications

FlavorName/ID

CPU Memory Local Disk ExtendedConfiguration

physical.s3.large

2 x 10 CoreIntel XeonE5-2618L V4(2.20 GHz)

DDR4 RAM(128 GB)

2 x 600GBSAS SystemDisk RAID1

2 x 2-port10GE + SDI

physical.s3.xlarge

2 x 14 CoreIntel XeonE5-2658 V4(2.30 GHz)

DDR4 RAM(256 GB)



physical.s3.2xlarge


DDR4 RAM(192 GB)



● Disk-intensive

This BMS type uses local disks as both the system disk and data disks, and isideal for scenarios that have large data volumes and require high computingperformance, stability, and real-time performance, such as big data anddistributed cache.

Table 4-2 Disk-intensive BMS specifications

FlavorName/ID


physical.d1.large


DDR4 RAM(128 GB)

2 x 600GBSAS SystemDisk RAID 1+ 8 x 4TBSATA

2 x 2-port10GE

● Memory-optimized

This BMS type provides ultra-large memory of more than 1 TB and is ideal forscenarios such as in-memory databases, SAP HANA, and HPC fat nodes.



Table 4-3 Memory-optimized BMS specifications

FlavorName/ID


physical.m2.small

4 x 24 CoreXeonE7-8890 V4(2.20 GHz)

DIMM RAM(1024 GB)

2 x 600GBSAS SystemDisk RAID1+ 7 x 1.8TBSAS HDDRAID5 + 2 x1.6TB NVMeSSD

2 x 2-port10GE + 16GFC + SDI

physical.m2.medium


DIMM RAM(2048 GB)



physical.m2.large


DIMM RAM(3072 GB)

2 x 600GBSAS SystemDisk RAID1+ 14 x 1.8TBSAS HDD + 4x 400GB SASSSD + 2 x1600GBNVMe SSD


physical.m2.xlarge


DIMM RAM(4096 GB)

2 x 600GBSAS SystemDisk RAID1+ 14 x 1.8TBSAS HDD + 4x 400GB SASSSD + 2 x1600GBNVMe SSD


● I/O-optimized

This BMS type uses SSD disks as both the system disk and data disks. It isideal for high-performance big data, databases, and other scenarios thatrequire high storage I/O performance.



Table 4-4 I/O-optimized BMS specifications

FlavorName/ID


physical.io1.large

2 x 10 CoreE5 2618L V4(2.20 GHz)

DDR4 RAM(256 GB)

2 x 800GBSAS SSDSystem DiskRAID1 + 4 x3.2TB NVMeSSD

2 x 2-port10GE

● GPU-accelerated

This BMS type includes computing-accelerated BMSs (P series) and graphics-accelerated BMSs (G series). It provides outstanding floating-point computingperformance and is ideal for scenarios that require real-time, highlyconcurrent massive computing, such as deep learning, scientific computing,CAE, 3D animation rendering, and CAD.

Table 4-5 GPU-accelerated BMS specifications

FlavorName/ID


physical.p1.large


DDR4 RAM(512 GB)

2 x 600GBSAS HDDSystem DiskRAID1+ 6 x800GBNVMe SSDDisk

NIC: 1 x100G IB + 2x 10GE + SDIGPU: 8 xTesla P100GPUmemory: 16GB

physical.p2.large


DDR4 RAM(512 GB)

2 x 600GBSAS HDD + 6x 800GBNVMe SSD

NIC: 1 x100G IB + 2x 10GE + SDIGPU: 8 xTesla V100GPUmemory: 16GB

physical.g1.small


DDR4 RAM(256 GB)

2 x 600GBSAS + 960GBSSD

NIC: 3 x 2-port 10GEGPU: 1 xM60



4.3 x86 V5 BMS with Intel Skylake CPU

CA UTION

x86 V5 BMSs have been out of production.

● General-purposeThis BMS type provides general compute, storage, and network specificationsand supports attachment of EVS disks. It is ideal for systems that have generalrequirements for performance but require dedicated resources and isolatednetworks, such as databases, core ERP systems, and financial systems.


FlavorName/ID


physical.s4.medium

2 x 10 CoreIntel XeonSilver 4114V5 (2.20GHz)

DDR4 RAM(128 GB)

None 2 x 2-port10GE + SDI

physical.s4.large


DDR4 RAM(192 GB)


physical.s4.xlarge

2 x 14 CoreIntel XeonGold 5120V5 (2.20GHz)

DDR4 RAM(192 GB)


physical.s4.2xlarge


DDR4 RAM(384 GB)


physical.s4.3xlarge


DDR4 RAM(384 GB)




FlavorName/ID


physical.o3.small

2 x 4 CoreIntel SkylakeXeon Gold5122 V5(3.60 GHz)

DDR4 RAM(192 GB)


● Disk-intensive

This BMS type uses local disks as both the system disk and data disks, and isideal for scenarios that have large data volumes and require high computingperformance, stability, and real-time performance, such as big data anddistributed cache.

Table 4-7 Disk-intensive BMS specifications

FlavorName/ID


physical.d2.tiny


DDR4 RAM(128 GB)

2 x 600GBSAS SystemDisk RAID1+ 12 x 1.8TBSAS

2 x 2-port10GE

physical.d2.large


DDR4 RAM(192 GB)

2 x 600GBSAS SystemDisk RAID1+ 12 x 10TBSATA

2 x 2-port10GE

physical.d2.xmedium

2 x 18 IntelXeon Gold6151 V5(3.00 GHz)

DDR4 RAM(384 GB)

2 x 600GBSAS RAID1+ 24 x 1.8TBSAS

2 x 2-port10GE

● I/O-optimized

This BMS type uses SSD disks as both the system disk and data disks. It isideal for high-performance big data, databases, and other scenarios thatrequire high storage I/O performance.



Table 4-8 I/O-optimized BMS specifications

FlavorName/ID


physical.io2.xlarge


12 x 32GBDDR4 RAM

2 x 800GBSSD RAID1+ 10 x 800GBSSD

2 x 2-port10GE

● High-performance computing

This BMS type uses InfiniBand NICs and provides a large number of CPUcores, large memory size, and high throughput. It is ideal for high-performance computing.

Table 4-9 High-performance computing BMS specifications

FlavorName/ID


physical.h2.large


12 x 16GBDDR4

1 x 1.6TBNVMe SSD

1 x 100G IB+ 2 x 10GE +SDI

physical.hc2.xlarge


DDR4 RAM(384 GB)


NO TE

In the Memory column, 12 x 16GB indicates twelve 16 GB memory modules. 384 GBcan be the total size of multiple memory modules or a 384 GB memory module.

● GPU-acceleratedThis BMS type provides powerful floating-point computing and is ideal forreal-time, highly concurrent massive computing scenarios, such as deeplearning, scientific computing, CAE, 3D animation rendering, and CAD.




FlavorName/ID


physical.p3.large

2 x 18 CoreIntel Skylake6151 V5(3.00 GHz)

DDR4 RAM(512 GB)

2 x 1.2TBRAID 1 + 6 x800GBNVMe SSD

NIC: 1 x100G IB + 2x 10GE + SDIGPU: 8 xTesla V100GPUmemory: 32GB

4.4 x86 V6 BMS with Intel Cascade Lake CPU● General-purpose

This BMS type provides general compute, storage, and network specificationsand supports attachment of EVS disks. It is ideal for systems that have generalrequirements for performance but require dedicated resources and isolatednetworks, such as databases, ERP systems, containers, and big datacomputing.


FlavorName/ID


physical.c6s.3xlarge

2 x 26 CoreIntel CascadeLake 6278V6 (2.60GHz)

DDR4 RAM(384 GB)

None SDI 3.0 (40GE)

physical.c6sd.3xlarge


DDR4 RAM(384 GB)

4*3.2TBNVMe SSD

SDI 3.0 (40GE)

● High-performance computing

This BMS type meets the requirements of multi-core, high-frequency, andlow-latency HPC.



Table 4-12 High-performance computing BMS specifications

FlavorName/ID


physical.h6.xlarge


DDR4 RAM(192 GB)

None 100GMellanox IB(RDMA) +SDI 3.0 (40GE)

● GPU-accelerated

This BMS type uses NVIDIA T4 GPU and meets the requirements of AIinference and graphics acceleration services.


FlavorName/ID


physical.pi6.3xlarge.6


DDR4 RAM(448 GB)

2 x 480GBSATA SSD+ 1.6TBNVMe SSD

NIC: 2 x10GE(IN200) + 2 x25GE(IN200)GPU: 6 xNVIDIA T4

4.5 Kunpeng V1 BMSKunpeng BMSs use Kunpeng 920 processors to offer powerful computing andhigh-performance networks, meeting the requirements of governments andInternet enterprises for cost-effective, secure, reliable cloud services.

Table 4-14 Kunpeng BMS specifications

FlavorName/ID


QingTianArchitecture

physical.ks1.2xlarge

2 x 64 CoreKunpeng920-6426(2.60 GHz)

16 x 16GBDDR4

960 GB SASSSD

2 x 25GE+ 2 x 25GE

No



FlavorName/ID


QingTianArchitecture

physical.ks1ne.2xlarge


16 x 16GBDDR4

None SDI 3.0 (40GE)

Yes



16 x 32GBDDR4

2*3.2TBNVMe SSD

SDI 3.0 (40GE)

Yes



32 x 32GBDDR4

2*3.2TBNVMe SSD

SDI 3.0 (40GE)

Yes

physical.kh1ne.2xlarge


16 x 16GBDDR4

960 GB SASSSD

1*100GRDMA(Mellanox)+ SDI3.0 (40GE)

Yes

4.6 LifecycleThe lifecycle of a BMS contains all states from its creation to deletion.

Figure 4-1 BMS states



Table 4-15 Description of BMS states

State Attribute Description API Status

Creating Intermediate state

A BMS is in this state after you requestfor the BMS and before it enters therunning state.If a BMS remains in this state for along time, exceptions will occur.Contact the administrator to handlethe exceptions.

BUILD/BUILDING

Starting Intermediate state

It is an intermediate state betweenStopped and Running.If a BMS remains in this state for along time, exceptions will occur.Contact the administrator to handlethe exceptions.

SHUTOFF

Running Stablestate

A BMS is in this state when it isrunning properly.A BMS in this state can be usednormally.

ACTIVE

Stopping Intermediate state

It is an intermediate state betweenRunning and Stopped.If a BMS remains in this state for along time, exceptions will occur.Contact the administrator to handlethe exceptions.

ACTIVE

Stopped Stablestate

A BMS is in this state after it isstopped successfully.A BMS in this state cannot be used.

SHUTOFF

Restarting

Intermediate state

A BMS is in this state when it is beingrestarted.If a BMS remains in this state for along time, exceptions will occur.Contact the administrator to handlethe exceptions.

REBOOT

Forciblyrestarting

Intermediate state

A BMS is in this state when it is beingforcibly restarted.

HARD_REBOOT

Deleting Intermediate state

A BMS is in this state when it is beingdeleted.If a BMS remains in this state for along time, exceptions will occur.Contact the administrator to handlethe exceptions.

ACTIVE/SHUTOFF/REBOOT/HARD_REBOOT/ERROR



State Attribute Description API Status

Deleted Intermediate state

A BMS is in this state after it is deletedsuccessfully. A BMS in this state cannotbe used and will be removed from thesystem in a short time.

DELETED

Faulty Stablestate

A BMS is in this state when anexception occurs on it.A BMS in this state cannot be used.Contact the administrator to rectifythe fault.

ERROR

Rebuilding

Intermediate state

A BMS is in this state when it is beingrebuilt.

SHUTOFF

Reinstalling OS

Intermediate state

A BMS is in this state when its OS isbeing reinstalled.

SHUTOFF

Reinstalling OSfailed

Stablestate

An exception occurred when the BMSOS was being reinstalled and thereinstallation failed.A BMS in this state cannot be used.Contact the administrator to rectifythe fault.

SHUTOFF



5 Image5.1 Overview

What Is an Image?An image is a template of the BMS running environment. It contains an OS andruntime environment, and some pre-installed applications. An image file isequivalent to a copy file that contains all data in the system disk.

Image TypesImages can be classified into public images, private images, and shared images.

Table 5-1 Image types

Image Type Description

Public image A public image is provided by the cloud platform and isavailable to all users. It contains an OS and preinstalledpublic applications.

Private image A private image is created by a user and is available onlyto the user who created it. It contains an OS, pre-installed public applications, and the user's privateapplications. Using a private image to create BMSs freesyou from repeatedly configuring BMSs.

Shared image A shared image is a private image other users share withyou.

Public ImagePublic images are provided by HUAWEI CLOUD. These images are available to allusers, compatible with BMS and most mainstream OSs, and are pre-installed withnecessary plug-ins. Public images available to users vary depending on the BMSflavor. For details, see OSs Supported by Different Types of BMSs.

Bare Metal ServerService Overview 5 Image


Characteristics

● OS types: Linux and Windows OSs that are updated and maintainedperiodically

● Supported software: plug-ins that BMS storage, networks, and basic functionsdepend on

CA UTION

These plug-ins are necessary for BMSs to run properly. Do not delete ormodify any of them. Otherwise, basic BMS functions will be affected.

Table 5-2 Supported software

Software Description

Cloud-Init Cloud-Init is an open-source cloud initialization program,which initializes specific configurations, such as the hostname, key, and user data, of a newly created BMS.

One-clickpassword resetplug-in

BMS provides the one-click password resetting function. Ifyou lose your BMS password or it expires, the passwordreset plugin enables you to set a new password on themanagement console.

bms-network-config

This plug-in is used to automatically configure BMSnetworks during BMS provisioning and restore the BMSnetwork when the network is interrupted due to faults.The plug-in is stored in the /opt/huawei directory. Donot delete or modify it.

SDI iNICfrontend driverplug-in

This plug-in is installed in the image so that EVS diskscan be attached to BMSs. BMSs can be started from EVSdisks, facilitating quick BMS provisioning.

● Compatibility: compatible with server hardware● Security: highly stable and licensed● Restrictions: no restrictions on usage

Private Image

A private image contains an OS, preinstalled public applications, and a user'sprivate applications. You can use a private image to create BMSs without havingto repeatedly configure BMSs.

Characteristics

● Compatibility: Private images can be used to deploy servers that are of thesame model as the source BMS and may fail to deploy servers of othermodels.



● Supported functions: You can create and delete private images, as well ascreate BMSs and reinstall the BMS OS using private images. You can alsoperform the following operations on private images:– Share images with other tenants.– Replicate images across regions.– Export images to your OBS bucket.

● Restrictions: You can create a maximum of 50 private images.● Pricing: You will be charged for storing private images. For more information,

see Pricing Details.

Shared ImageA shared image is a private image other users share with you.

Application Scenarios● Deploying software environments in a batch

Prepare a BMS with an OS, the partition arrangement you prefer, andsoftware installed to create a private image. You can use the image to createbatch clones of your custom BMS.

● Backing up a BMSCreate an image from a BMS to back up the BMS. If the software of the BMSbecomes faulty, you can use the image to restore the BMS.

5.2 OSs Supported by Different Types of BMSsThe following tables list the 64-bit OSs supported by of different BMS types.

● Table 5-3 lists the OSs supported by x86 V4 BMSs with an Intel BroadwellCPU.

● Table 5-4 lists the OSs supported by x86 V5 BMSs with an Intel Skylake CPU.● Table 5-5 lists the OSs supported by x86 V6 BMSs with an Intel Cascade Lake

CPU.● Table 5-6 lists the OSs supported by BMSs with a Kunpeng CPU.

NO TE

It is recommended that you use the official OS release versions. Do not tailor or customizethe release versions, or problems may occur.OS vendors do not always update OS release versions regularly. Some versions are nolonger maintained, and these deprecated versions no longer receive security patches. Ensurethat you read the update notifications from OS vendors and update your OS so that it runsproperly.



https://support.huaweicloud.com/intl/en-us/usermanual-ims/ims_01_0305.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-ims/ims_01_0332.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-ims/en-us_topic_0034011241.htmlhttps://support.huaweicloud.com/intl/en-us/productdesc-ims/en-us_topic_0030713145.html

Table 5-3 OS compatibility of BMSs with x86 V4 CPU

BMS Type Windows

CentOS

RedHat

SUSE Ubuntu OracleLinux

EulerOS

Disk-intensiveD1physical.d1.large

WindowsServer2012R2StandardWindowsServer2016Standard

CentOS6.7/6.8/6.9/6.10/7.2/7.3/7.4/7.5

Red Hat6.7/6.8/6.9/7.2/7.3/7.4/7.5

SUSELinuxEnterprise11.SP4/12.SP1/12.SP2/12.SP3

Ubuntu14.04.5LTSUbuntu16.04LTS

OracleLinux6.9/7.4

EulerOS2.2/2.3

General-purposeBMSphysical.s3.largephysical.s3.xlargephysical.s3.2xlarge


CentOS6.7/6.8/6.9/6.10/7.2/7.3/7.4/7.5

Red Hat6.7/6.8/6.9/6.10/7.2/7.3/7.4/7.5



OracleLinux6.9/7.4

EulerOS2.2/2.3

Memory-optimizedBMSphysical.m2.smallphysical.m2.mediumphysical.m2.largephysical.m2.xlarge

- CentOS 7.2

- - - - -



BMS Type Windows

CentOS

RedHat


EulerOS

I/O-optimizedBMSphysical.io1.large


CentOS6.7/6.8/6.9/7.2/7.3/7.4/7.5

Red Hat6.7/6.8/6.9/7.2/7.3/7.4/7.5



OracleLinux6.9/7.4

EulerOS2.2/2.3

GPU-accelerated BMSphysical.p1.largephysical.p2.largephysical.g1.small

- CentOS 7.4

- - Ubuntu16.04LTS

- EulerOS2.3


BMS Type Windows

CentOS RedHat


EulerOS

Disk-intensiveBMSphysical.d2.tinyphysical.d2.xmedium


CentOS6.7/6.8/6.9/7.2/7.3/7.4/7.5

Red Hat6.7/6.8/6.9/7.2/7.3/7.4/7.5



OracleLinux6.9/7.4

EulerOS2.3



BMS Type Windows

CentOS RedHat


EulerOS

General-purposeBMS

physical.s4.medium

physical.s4.large

physical.s4.xlarge

physical.s4.2xlarge

physical.s4.3xlarge


CentOS6.9/7.3/7.4/7.5

RedHat /6.9/7.3/7.4/7.5

SUSELinuxEnterprise11.SP4/12.SP2/12.SP3


OracleLinux6.9/7.4

EulerOS2.3

I/O-optimizedBMSphysical.io2.xlarge


CentOS6.9/7.3/7.4/7.5

Red Hat6.9/7.3/7.4/7.5


Ubuntu16.04LTS

OracleLinux6.9/7.4

EulerOS2.3

High-performancecomputing BMS(h2)physical.h2.large

- CentOS6.9/7.3/7.4

- SUSELinuxEnterprise11.SP4

Ubuntu16.04LTS

- EulerOS2.3



BMS Type Windows

CentOS RedHat


EulerOS

High-performancecomputing (hc2)physical.hc2.xlarge


CentOS6.9/7.3/7.4/7.5

Red Hat6.9/7.3/7.4/7.5



OracleLinux6.9/7.4

EulerOS2.3

GPU-accelerated BMSphysical.p3.large

- - - - - - EulerOS2.3


BMS Type CentOS Red Hat SUSE Ubuntu OracleLinux

EulerOS

General-purposeBMSphysical.s6.xlargephysical.c6s.xlargephysical.c6s.3xlargephysical.c6sd.3xlarge

CentOS7.6/8.2

Red Hat7.6

SUSELinuxEnterprise 15.SP2

Ubuntu18.04.3LTS

OracleLinux7.6

EulerOS2.5

High-performancecomputingBMSphysical.h6.large

CentOS7.6

- - - - -



BMS Type CentOS Red Hat SUSE Ubuntu OracleLinux

EulerOS

Disk-intensiveBMSphysical.d6.xlarge

CentOS7.6/8.2

Red Hat7.6

SUSELinuxEnterprise 15.SP2

Ubuntu18.04.3LTS

OracleLinux7.6

EulerOS2.5

GPU-acceleratedBMSphysical.pi6.3xlarge.6

CentOS7.6

- - - - -

Table 5-6 OS compatibility of BMSs (CPU: Kunpeng)

BMS Type CentOS EulerOS

physical.ks1ne.2xlargephysical.ks1ne.4xlargephysical.ks1ne.8xlarge

CentOS 7.6 EulerOS 2.8

physical.kd1ne.2xlargephysical.kd1ne.4xlarge

CentOS 7.6 EulerOS 2.8

physical.kat1.6xlarge CentOS 7.6 EulerOS 2.8

5.3 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 checked. Table 5-7 lists theOSs supported for external image files. If the OS cannot be identified or is notsupported:

● 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 5-7 and Table 5-8 may fail. Youare advised to contact the customer service before uploading these image files.

Table 5-7 Supported OSs (x86)

OS Type OS Version

Windows Windows 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



OS Type OS Version

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

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



OS Type OS Version

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

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



OS Type OS Version

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

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



OS Type OS Version

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 64bit

openEuler openEuler 20.03 64bit

NeoKylin NeoKylin 7.4 64bitNeoKylin Server release 5.0 U2 64bitNeoKylin Linux Advanced Server release 7.0 U5 64bit

Table 5-8 Supported OSs (ARM)

OS Type OS Version

CentOS CentOS 7.6 64bitCentOS 7.5 64bitCentOS 7.4 64bit

EulerOS EulerOS 2.8 64bit

Fedora Fedora 29 64bit

Ubuntu Ubuntu 19.04 Server 64bitUbuntu 18.04 Server 64bit

SUSE SUSE Linux Enterprise Server 12 SP5 64bit

openEuler openEuler 20.03 64bit

NeoKylin NeoKylin V7 64bit

UnionTech UOS 20 64bit



6 EVS DiskWhat Is Elastic Volume Service (EVS)?

EVS offers scalable block storage for BMSs. EVS disks feature high reliability, highperformance, and rich specifications, and are ideal for distributed file systems,development and test environments, data warehouse applications, and high-performance computing (HPC) scenarios.

Unlike traditional servers that use local disks, BMSs use EVS disks that are notconstrained by capacity. Shared EVS disks allow concurrent reads and writes bymultiple BMSs, enabling you to deploy core applications in clusters.

EVS Disk TypesBMSs support the following types of EVS disks:

● Common I/O (previous generation): This EVS disk type delivers a maximum of2200 IOPS. It is ideal for application scenarios that require large capacity,medium read/write speed, and fewer transactions, such as enterprise officeapplications and small-scale testing.

● High I/O: This EVS disk type delivers a maximum of 5000 IOPS and aminimum of 1 ms read/write latency. It is designed to meet the needs ofmainstream high-performance, high-reliability application scenarios, such asenterprise applications, large-scale development and testing, and web serverlogs.

● Ultra-high I/O: This EVS disk type delivers a maximum of 33,000 IOPS and aminimum of 1 ms read/write latency. It is excellent for ultra-high I/O, ultra-high bandwidth, and read/write-intensive application scenarios, such asdistributed file systems in HPC or NoSQL/RDS in I/O-intensive scenarios.

● General purpose SSD: This EVS disk type delivers a maximum of 20,000 IOPSand a minimum of 1 ms read/write latency. It is designed to meet the needsof mainstream high-performance, low-latency, interactive applicationscenarios, such as enterprise office applications, large-scale development andtesting, transcoding, web server logs, and containers.

EVS Disk PerformanceThe key indicators of EVS disk performance include read/write I/O latency, IOPS,and throughput.

Bare Metal ServerService Overview 6 EVS Disk


● IOPS: number of read/write operations performed by an EVS disk per second● Throughput: amount of data successfully transmitted by an EVS disk per

second, that is, the amount of data read from and written into an EVS disk● Read/write I/O latency: minimum interval between two consecutive read/

write operations of an EVS disk

For more information about EVS disk performance, see Disk Types and DiskPerformance.

EVS Disk Device TypesBMS supports only Small Computer System Interface (SCSI) EVS disks.

On the management console, you can create EVS disks with Device Type set toSCSI. The EVS disks support transparent SCSI command transmission, allowingBMS OSs to directly access underlying storage media. The EVS disks support basicread/write SCSI commands and advanced SCSI commands.

NO TE

BMS public image OSs are preinstalled with the driver required to use SCSI disks, so you donot need to install the driver. To know how to install the driver, see Installing the SDI CardDriver in Bare Metal Server Private Image Creation Guide.

Bare Metal ServerService Overview 6 EVS Disk


https://support.huaweicloud.com/intl/en-us/productdesc-evs/en-us_topic_0014580744.htmlhttps://support.huaweicloud.com/intl/en-us/productdesc-evs/en-us_topic_0014580744.htmlhttps://support.huaweicloud.com/intl/en-us/bpicg-bms/bms_03_0033.htmlhttps://support.huaweicloud.com/intl/en-us/bpicg-bms/bms_03_0033.html

7 NetworkBMS network types include:

● VPC

● High-speed network and enhanced high-speed network

● IB network

● User-defined VLAN

Table 7-1 BMS network types

Network NetworkFeature

x86 V4Instance

x86 V5Instance

x86 V6Instance

KunpengInstance

VPC Supported

Yes Yes Yes Yes

Bandwidth

10 GE 10 GE 40GE 40GE

Numberof NICs

2 2 32 32

High-speednetwork

Supported

Yes Yes No No

Bandwidth

Share thebandwidthwith VPCs.

Share thebandwidthwith VPCs.

N/A N/A

Enhancedhigh-speednetwork

Supported

Yes Yes Yes. (Onlyheterogeneous BMSssupportenhancedhigh-speednetworks.)

No

Bandwidth

10 GE 10 GE N/A N/A

Bare Metal ServerService Overview 7 Network


Network NetworkFeature

x86 V4Instance

x86 V5Instance

x86 V6Instance

KunpengInstance

IBnetwork

Supported

Yes. (OnlyspecificBMSssupport IBnetworks.)




Bandwidth

100GE 100GE 100GE 100GE

User-definedNetwork

Supported

Yes. User-definednetworksdepend onenhancedhigh-speednetworksanddedicatedgateways.

Yes. User-definednetworksdepend onenhancedhigh-speednetworksanddedicatedgateways.

Yes. (Onlyheterogeneous BMSssupportuser-definednetworks.)

No

BMS provides four types of networks: VPC, high-speed network, user-definedVLAN, and IB network. They are isolated from each other. VPC and high-speednetwork interfaces are VLAN sub-interfaces created after system maintenanceVLAN NICs are bonded. You can manage and configure NICs of user-definedVLANs and IB networks.



Figure 7-1 BMS networks

NO TE

● In the preceding figure, ToR indicates the cabling mode in the server cabinet. The accessswitch is placed on top of the rack and the server is placed beneath it. HB indicates ahigh-speed network. QinQ indicates an 802.1Q tunnel.

● VPC and high-speed network interfaces are generated by the system and you should notchange them. They are configured in the same NIC bond.

● BMSs can communicate with ECSs through VPCs or IB networks (if any).

● Only VPC supports security groups, EIPs, and ELB.

● For a high-speed network and user-defined VLAN, BMSs in the same networkcommunicate with each other only through layer-2 connections.

VPC

A VPC is a logically isolated, configurable, and manageable virtual network. Ithelps improve the security of cloud resources and simplifies network deployment.You can create security groups and VPNs, configure IP address ranges, and specifybandwidth sizes in your VPC. With a VPC, you can easily manage and configureinternal networks and change network configurations. You can also customizeaccess rules to control BMS access within a security group and across differentsecurity groups to enhance BMS security.

For more information, see Virtual Private Cloud Service Overview.



https://support.huaweicloud.com/intl/en-us/productdesc-vpc/en-us_topic_0013748729.html

High-Speed Network

A high-speed network is an internal network between BMSs. It provides highbandwidth for connecting BMSs in the same AZ. If you want to deploy servicesthat require high throughput and low latency, you can create high-speednetworks. Currently, the BMS service supports high-speed networks with amaximum bandwidth of 10 Gbit/s.

Enhanced high-speed networks use upgraded hardware and software and provideperformance superior to high-speed networks.

Enhanced high-speed networks have the following advantages:

● The bandwidth is 10 Gbit/s or higher.

● The number of network planes can be customized and a maximum of 4000subnets are supported.

● VMs on a BMS can access the Internet.

User-defined VLAN

You can use the 10GE Ethernet NICs that are not being by the system to configurea user-defined VLAN. The QinQ technology is used to isolate networks andprovide additional physical planes and bandwidths. You can create VLANs toisolate network traffic. User-defined VLAN NICs are in pairs. You can configure NICbonding to achieve high availability. User-defined VLANs in different AZs cannotcommunicate with each other.

NO TE

QinQ is a layer 2 tunnel protocol based on IEEE 802.1Q encapsulation. It adds a publicVLAN tag to a frame with a private VLAN tag to allow the frame with double VLAN tags tobe transmitted over the service provider's backbone network based on the public VLAN tag.This provides a layer 2 VPN tunnel for customers.

IB Network

An IB network features low latency and high bandwidth and is used in a numberof High Performance Computing (HPC) projects. It uses the 100 Gbit/s Mellanox IBNIC, dedicated IB switch, and controller software UFM to ensure networkcommunication and management, and uses the Partition Key to isolate IBnetworks of different tenants (similar to VLANs in an Ethernet).

Figure 7-2 IB network isolation



NO TE

Unified Fabric Manager (UFM) is the IB switch controller of an IB network based onOpenSM software and provides northbound service ports. It is deployed in active/standbymode.



8 Security8.1 License Type

Use License from the System

You can use OS licenses provided by the cloud platform. You need to pay for thelicenses which are billed on a pay-as-you-go basis. The licenses are managed bythe cloud platform.

Bring Your Own License (BYOL)

What Is BYOL?

Bring Your Own License (BYOL) allows you to use your own OS licenses. You donot need to pay for the licenses but need to manage them by yourself.

How Can I Use BYOL?

If you choose BYOL, you need to manage licenses by yourself. The cloud platformprovides functions you need for maintaining license compliance during thelifecycle of your license.

Application Scenarios

You can choose BYOL when you create a BMS.

The system will not allow you to change the license type after you create the BMSor when you reinstall its OS.

8.2 Security Group

What Is a Security Group?

A security group is a virtual firewall that detects status and filters data packets. Itis an important network isolation method used to set access control for ECSs,BMSs, load balancers, and database instances.

Bare Metal ServerService Overview 8 Security


You can configure security group rules to allow instances in a security group toaccess the public or private network.

● A security group is a logical group. You can add BMSs that have the samesecurity protection requirements within a region to the same security group.

● By default, BMSs in the same security group can communicate with eachother through an internal network, whereas BMSs in different security groupscannot.

● You can modify a security group rule at any time, and the modification takeseffect immediately.

Default Security Group

When you create a BMS in a region, the system will create a default securitygroup if no security group exists in the region.

The default security group rule allows all outgoing data packets and blocksincoming data packets. BMSs in this security group can access each other already.You do not need to add additional rules.

Figure 8-1 Default security group

Table 8-1 lists the rules for a default security group.

Table 8-1 Default security group rules

Direction

Protocol PortRange

Source/Destination

Description

Outbound

All All Destination:0.0.0.0/0

Allows all outbound traffic.

Inbound All All Source: currentsecurity groupID (for example,sg-xxxxx)

Allows inbound trafficfrom BMSs in the samesecurity group.



Direction

Protocol PortRange

Source/Destination

Description

Inbound TCP 22 Source: 0.0.0.0/0 Allows all IP addresses toaccess Linux BMSs overSSH.

Inbound TCP 3389 Source: 0.0.0.0/0 Allows all IP addresses toaccess Windows BMSsover RDP.

For more information, see Security Group Overview.

8.3 Cloud-Init

What Is Cloud-Init?

Cloud-Init is an open-source cloud initialization program, which initializes specificconfigurations, such as the host name, key, and user data, of a newly created BMS.

All public images support Cloud-Init.

Impact on IMS

To ensure that BMSs you create using private images support customizedconfigurations, you must install Cloud-Init or Cloudbase-Init when you createprivate images.

● For Windows OSs, download and install Cloudbase-Init.

● For Linux OSs, download and install Cloud-Init.

After Cloud-Init or Cloudbase-Init is installed in an image, Cloud-Init orCloudbase-Init automatically initializes the BMS when you create it. For detailsabout how to install Cloud-Init and Cloudbase-Init, see Bare Metal Server PrivateImage Creation Guide.

Impact on BMS● When you create a BMS, if the image you select supports Cloud-Init, you can

use user data injection to inject customized configuration, such as the BMSlogin password, into the BMS. For details, see Injecting User Data into BMSs.

● If Cloud-Init is installed, you can view BMS metadata and configure andmanage running BMSs. For more information, see Metadata.

Notes● If Cloud-Init has been installed, enable DHCP in the VPC to which the BMS

belongs.



https://support.huaweicloud.com/intl/en-us/usermanual-vpc/en-us_topic_0073379079.htmlhttps://support.huaweicloud.com/intl/en-us/bpicg-bms/bms_picg_0308.htmlhttps://support.huaweicloud.com/intl/en-us/bpicg-bms/bms_picg_0308.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0021.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0040.html

● If Cloud-Init has been installed, ensure that security group rules in theoutbound direction meet the following requirements so that you can accessthe metadata service:

– Protocol: TCP

– Port Range: 80

– Remote End: 169.254.0.0/16

NO TE

If you use the default security group rule in the outbound direction, the precedingrequirements are met, and the metadata service can be accessed. The defaultoutbound security group rule is as follows:

● Protocol: ANY

● Port Range: ANY

● Remote End: 0.0.0.0/16

8.4 Key Pair and Password

What Is a Key Pair?

A key pair, or SSH key pair, is an authentication method used when you remotelylog in to Linux instances. A key pair is generated using an encryption algorithm. Itcontains a public key, and a private key reserved for you. The public key is used toencrypt data (for example, a password), and the private key is used to decrypt thedata.

HUAWEI CLOUD stores the public key, and you need to store the private key. Donot share your private key with anyone. Keep your private key secure.

Advantages

The key pair is more secure and convenient than the username/password method.

Table 8-2 Comparison between the key pair and username/password

Item Key Pair Username and Password

Security ● More secure than thepassword and free frombrute-force attacks

● The private key cannotbe derived from thepublic key.

Poor security

Convenience Simultaneous login to alarge number of Linuxinstances, simplifyingmanagement

Login to only one Linuxinstance at one time; batchmaintenance cannot beperformed.



Constraints● Only Linux instances support the key pair method.● Only RSA key pairs are supported. A key pair can contain 1024, 2048, or 4096

characters.● A Linux instance can have only one key pair. If a private key is bound to your

BMS and you bind a new private key to the BMS, the new private key willreplace the original one.

Generation Method● Create a key pair on the management console.

NO TE

When generating a key pair for the first time, download and properly save the privatekey.

● Use PuTTYgen to create a key pair and import the key pair into HUAWEICLOUD.

Related OperationsUsing an SSH Key Pair

8.5 Access ControlIdentity and Access Management (IAM) provides functions such as user identityauthentication, permission assignment, and access control. You can use IAM tosecurely control user access to your BMSs.

● Account securityIf you are an enterprise administrator, you can use IAM to create a user andgrant permissions to the user. Enterprise employees can use the user accountto access the system, and you do not need to share your account password orkey pair with them. This helps you manage resources efficiently. You can alsoset account security policies to ensure the security of these user accounts andreduce security risks for your enterprise information.

● Fine-grained authorizationYou can grant refined operation rights to employee accounts to ensure thatcloud services are properly used.

IAM also provides functions such as intra-region resource isolation and delegation.For details, see Identity and Access Management Overview.



https://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0015.htmlhttps://support.huaweicloud.com/intl/en-us/productdesc-iam/iam_01_0003.html

9 Billing9.1 Billing

Billing ItemsThe billing items include BMS, EVS disk (optional), and EIP (optional). For details,see Table 9-1.

Table 9-1 BMS billing

Billing Item Description

BMS Pricing for the BMS is based on the specifications youchoose, including CPU, memory, local disks, and extendedconfigurations.

(Optional) EVSdisk

EVS disks that you create when you create a BMS are billedin the same way as the BMS. Any EVS disks that you createindependently are billed on a pay-per-use or yearly/monthly basis.

(Optional) EIP You can bind an EIP to a BMS and pay for the EIP bybandwidth or traffic.

Billing ModesBMSs are billed on a yearly/monthly basis and cannot be billed on a pay-per-usebasis. You can buy 10 months and get two free. If you intend to use BMSs for along term, you can save more by specifying a longer duration.

Changing the Billing ModeIf you require additional storage space, you can either expand the capacity of EVSdisks that are attached to a BMS or attach more EVS disks to the BMS. Theadditional storage space is charged based on the billing mode of the EVS disks.

Bare Metal ServerService Overview 9 Billing


FAQ● Where Can I Query the BMS Price?● What Are Pre-payment and Post-payment? How Do I Choose Between

Them?● How Am I Charged When Unsubscribing from a BMS?● How Do I Set Automatic Renewal for Yearly/Monthly BMSs?● When Will a BMS Be Released After It Expires?

Bare Metal ServerService Overview 9 Billing


https://support.huaweicloud.com/intl/en-us/bms_faq/bms_01_0059.htmlhttps://support.huaweicloud.com/intl/en-us/bms_faq/bms_faq_0024.htmlhttps://support.huaweicloud.com/intl/en-us/bms_faq/bms_faq_0024.htmlhttps://support.huaweicloud.com/intl/en-us/bms_faq/bms_faq_0031.htmlhttps://support.huaweicloud.com/intl/en-us/bms_faq/bms_faq_0052.htmlhttps://support.huaweicloud.com/intl/en-us/bms_faq/bms_01_0069.html

10 Region and AZConcept

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 10-1 shows the relationship between regions and AZs.

Figure 10-1 Regions and AZs

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

Bare Metal ServerService Overview 10 Region and AZ


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

Selecting a RegionWhen selecting a region, consider the following factors:

● LocationIt is recommended that you select the closest region for lower networklatency and quick access. Regions within the Chinese mainland provide thesame infrastructure, 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 priceResource prices may vary in different regions. For details, see Product PricingDetails.

Selecting an AZWhen 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 lower network latency, deploy resources in the same AZ.

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

Bare Metal ServerService Overview 10 Region and AZ


https://www.huaweicloud.com/intl/en-us/pricing/index.htmlhttps://www.huaweicloud.com/intl/en-us/pricing/index.htmlhttps://developer.huaweicloud.com/intl/en-us/endpoint

11 Related ServicesRelationships Between BMS and Other Services

Table 11-1 Relationships between BMS and other services

Service Relationship Main Interactions/Best Practices

ImageManagement Service(IMS)

You can quickly create BMSs usingimages. You can also create privateimages using BMSs and share them withother users.

● Creating a BMSUsing a PrivateImage

● Creating a PrivateImage from a BMS

● Creating a PrivateImage from anExternal ImageFile

VirtualPrivateCloud(VPC)

You can configure a logically isolatednetwork for your BMSs and configuresecurity groups, VPN, IP addresssegments, and bandwidth. With a VPC,you can easily manage and configureinternal networks and change networkconfigurations. You can also customizeaccess rules to control BMS access withina security group and across differentsecurity groups to enhance BMS security.

● Adding SecurityGroup Rules

● Binding an EIP toa BMS

Bare Metal ServerService Overview 11 Related Services


https://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0006.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0006.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0006.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0026.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0026.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0027.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0027.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0027.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0027.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/en-us_topic_0028313245.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/en-us_topic_0028313245.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/en-us_topic_0053655291.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/en-us_topic_0053655291.html

Service Relationship Main Interactions/Best Practices

DedicatedCloud(DeC)

Resources in a DeC are physically isolatedfrom those in public resource pools. Ifyour services have high securitycompliance requirements, you can createBMSs in a DeC. You can create adedicated BMS in either of the followingways:● Method 1: Create a dedicated BMS on

the DeC console.● Method 2: Create a dedicated BMS on

the Cloud Server Console.

● Enabling a DeC● Creating a

Dedicated BMS

ElasticVolumeService(EVS)

You can attach EVS disks to a BMS andexpand their capacity at any time.

● Attaching DataDisks

● Initializing DataDisks

● Detaching DataDisks

● Expanding DiskCapacity

DedicatedDistributedStorageService(DSS)

DSS provides you with dedicated, physicalstorage resources. DSS features dataredundancy and cache accelerationtechnologies and provides highly reliable,durable, low-latency, and stable storageresources. It provides enterprise-classperformance in a wide range of scenarios,such as HPC, OLAP, and a mix of loads.

● Disk Types

Cloud Eye After you obtain a BMS and install andconfigure Agent on the BMS, you canview the monitoring data of the BMS inCloud Eye.

● Server MonitoringOverview

TagManagement Service(TMS)

You can tag BMSs to classify and searchthem more easily.

● Adding Tags● Searching for

Resources by Tag● Deleting Tags

Bare Metal ServerService Overview 11 Related Services


https://support.huaweicloud.com/intl/en-us/usermanual-dcc/dcc_03_0002.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0005.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0005.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/en-us_topic_0053537012.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/en-us_topic_0053537012.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0024.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0024.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0041.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0041.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/en-us_topic_0078785565.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/en-us_topic_0078785565.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0022.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0065.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0065.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_01_0057.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0062.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0062.htmlhttps://support.huaweicloud.com/intl/en-us/usermanual-bms/bms_umn_0063.html

12 Supported Features and RestrictionsSupported Features

BMS

● Automatic BMS provisioning and remote login to BMSs through themanagement console

● Managing the lifecycle of a BMS, including querying, starting, stopping,restarting, and deleting a BMS

● One-click password reset● Reinstalling the OS● Request to rebuild the BMS if the BMS hardware or SDI iNIC is damaged● Using Cloud Server Backup Service (CSBS) to back up BMS configurations and

EVS disk data in Object Storage Service (OBS) buckets for data security● Injecting scripts to simplify BMS configuration and initialization● Installation of Cloudera's Distribution Including Apache Hadoop (CDH) on

BMSs, which enables communication with other services you have purchased● Using APIs to manage BMSs● Server monitoring, with which you can obtain the CPU, memory, and disk I/O

metrics of your BMSs● Tagging BMSs to make them easier to identify and search

Disk

● Attaching EVS disks to or detaching EVS disks from Linux or Windows BMSs● Shared EVS disks● Dynamic capacity expansion of EVS disks

Image

● Using a public, private, or shared image to create BMSs● Creating a private image from a BMS● Creating a private image from an external image file● Sharing images, replicating images across regions, and exporting images to an

OBS bucket

Network

Bare Metal ServerService Overview 12 Supported Features and Restrictions


● VPC and IB network● Creating a security group and defining a rule to protect BMS security● Binding an EIP to a BMS to enable the BMS to access the Internet● Attaching multiple NICs to a BMS

Constraints● External hardware devices (such as USB devices, bank U keys, external hard

disks, and dongles) cannot be directly loaded.● Out-of-band management is not supported. Your BMSs are managed and

maintained by HUAWEI CLOUD.● Live migration is not supported. If a BMS is faulty, your services running on it

may be affected. It is good practice to deploy your services in a cluster or inprimary/standby mode to ensure high availability.

● You cannot create a raw server with no OS, that is, a BMS must have an OS.● The OS of a BMS can be reinstalled but cannot be changed.● The OSs of Windows BMSs using public images are activated by default. You

must manually activate the virtual OSs you installed on the BMSs.● You can only select a flavor with specified CPU, memory, and local disks when

you create a BMS. The CPU, memory, and local disks in a flavor cannot bemodified. However, you can expand the capacity of attached EVS disks.

● You can only attach EVS disks whose device type is SCSI to a BMS.● You cannot attach EVS disks to BMSs of certain flavors or BMSs created from

certain images because these BMSs do not have SDI iNICs or lackcompatibility.

● Do not delete or modify built-in plug-ins of an image, such as Cloud-Init andbms-network-config. Otherwise, basic BMS functions will be affected.

● If you choose to assign an IP address automatically when you create a BMS,do not change the private IP address of the BMS after the BMS is provisioned.Otherwise, the IP address may conflict with that of another BMS.

● BMSs do not support bridge NICs because they will cause networkinterruptions.

● Do not upgrade the OS kernel. Otherwise, the hardware driver may becomeincompatible with the BMS and adversely affect its BMS reliability.

Bare Metal ServerService Overview 12 Supported Features and Restrictions


13 Change HistoryReleased On Description

2020-07-15 This issue is the ninth official release.● Reclassified BMSs by instance type and added x86

V4 BMS with Intel Broadwell CPU, x86 V5 BMSwith Intel Skylake CPU, and Kunpeng V1 BMS.

● Added the OSs supported by compute-optimized o3BMSs in OSs Supported by Different Types ofBMSs.

2020-03-31 This issue is the eighth official release.Added the following content:Billing

2020-01-20 This issue is the seventh official release.Added the relationship between BMS and TMS inRelated Services.

2019-07-30 This issue is the sixth official release.● Adjusted the outline.● Added common concepts and access modes in What

Is BMS?● Modified the lifecycle chart in Lifecycle.

2019-05-30 This issue is the fifth official release.Added OSs Supported by Different Types of BMSs.

2019-04-16 This issue is the fourth official release.● Added the internal network bandwidth in What Is

BMS?● Added the RAID configuration and graphics card

memory of GPU instances in Instance Family.

Bare Metal ServerService Overview 13 Change History


Released On Description

2019-03-18 This issue is the third official release.Adjusted the outline and added the following sections:● Lifecycle● Security Group● Key Pair and Password● Access Control● Supported Features and Restrictions

2018-10-31 This issue is the second official release.Added Instance Family.

2018-06-30 This issue is the first official release.

Bare Metal ServerService Overview 13 Change History


Contents1 What Is BMS?2 BMS Advantages3 Application Scenarios4 Instance4.1 Instance Family4.2 x86 V4 BMS with Intel Broadwell CPU4.3 x86 V5 BMS with Intel Skylake CPU4.4 x86 V6 BMS with Intel Cascade Lake CPU4.5 Kunpeng V1 BMS4.6 Lifecycle

5 Image5.1 Overview5.2 OSs Supported by Different Types of BMSs5.3 Formats and OSs Supported for External Image Files

6 EVS Disk7 Network8 Security8.1 License Type8.2 Security Group8.3 Cloud-Init8.4 Key Pair and Password8.5 Access Control

9 Billing9.1 Billing

10 Region and AZ11 Related Services12 Supported Features and Restrictions13 Change History

service overview - huawei cloud · table 4-2 disk-intensive bms specifications flavor name/id cpu...

Documents