Purchasing a FlexusX Instance

Preparations

Register a HUAWEI ID and enable Huawei Cloud services.

Step 1: Access the Page for Purchasing FlexusX Instances

Access the Buy FlexusX Instance page.

Step 2: Configure Parameters

Configure parameters based on your service requirements.

Step 3: Confirm the Configuration and Submit the Order

Confirm the configuration details and complete the purchase.

Billing Mode

FlexusX instances can be billed on a yearly/monthly or pay-per-use basis. For details, see Billing.

• Yearly/Monthly: You can select a required duration and pay for the subscription in a single payment.
• Pay-per-use: You do not need to select a required duration. Instead, you will be billed based on how long you use the instance.

Region

A region refers to a physical data center area where FlexusX instances reside. Select a region close to your services to reduce network latency and improve access speed.

For services that need to communicate with existing cloud services through a private network, select the region where the existing cloud services are deployed.

Exercise caution when selecting a region. Once a FlexusX instance is created, the region cannot be changed.

AZ

An AZ is a physical region where resources use independent power supply and networks. AZs are physically isolated but interconnected through an internal network.

• Random
• Specified an AZ.

Compute Type

x86: The compute is provided by x86 CPUs.

Performance Mode

FlexusX supports the performance mode. The performance mode can provide ultimate, stable performance assurance at additional costs. For details about the differences between performance and non-performance modes, see Instance Specifications.

Instance Specifications

You can select either preset or custom FlexusX instance specifications as needed. For more information about specifications, see Instance Specifications.

Public Images

Public images are standard, widely used images. A public image contains an OS and pre-installed public applications. After your instance is created using a public image, you can deploy applications or software on the instance as required.

Private images

Private images are created on Image Management Service (IMS). You can create a private image from a cloud server on Huawei Cloud or another cloud platform, or you can download a third-party image.

Before selecting a private image, you are advised to learn about the usage and constraints of private images described in Creating a FlexusX Instance from a Private Image or Using a Private Image to Change the OS.

Shared images

A shared image is a private image shared by another user.

System Disk

Set the system disk type and size. Different disks have different performance. For details, see EVS Concepts.

If the private image you selected is not encrypted, the system disk will not be encrypted, either. If the image you selected is encrypted, the system disk will be encrypted automatically.

Data Disk

Set the data disk type, size, and quantity. Click Show on the right of a data disk to set the following parameters if required:

• SCSI: If you select this option, the device type of the data disk is SCSI. For more information about SCSI disks and supported FlexusX instances, see Device Types.
• Share: If you select this option, the data disk is sharable. Such a disk can be attached to multiple FlexusX instances.

VPC

Select an available VPC and subnet from the drop-down list and specify how a private IP address will be assigned.

• Automatically assign IP address: The system automatically assigns a private IPv4 address to the primary NIC.
• Manually specify IP address: You need to manually assign a private IPv4 address to the primary NIC. Before specifying an IP address, click View In-Use IP Address to avoid address conflict.
• Use existing network interface: This parameter is displayed only when the selected VPC has available network interfaces. You can select an existing network interface from the drop-down list as the primary network interface.

NIC

Click Add NIC to add multiple extension NICs and specify IP addresses for them (including primary NICs).

If you specify an IP address and create multiple FlexusX instances in a batch, this IP address is the start IP address. Ensure that the IP address is consecutive, available within the specified subnet. The subnet that contains the specified IP address cannot overlap with other subnets.

IPv6

This parameter is available only if FlexusX instances are of specific flavors and in a VPC with IPv6 enabled.

• IPv6 not required
• Automatically-assigned IPv6

For details about how to enable IPv6 on a subnet, see IPv4 and IPv6 Dual-Stack Network. For details about how to check whether a FlexusX instance supports IPv4 and IPv6 dual stack, see "Constraints" in Dynamically Assigning IPv6 Addresses.

By default, the system assigns IPv4 addresses. If you select Automatically-assigned IPv6 address, the system assigns IPv6 addresses. In a VPC, a FlexusX instance uses an IPv6 address to access the dual-stack intranet. To access the Internet, you must enable IPv6 Bandwidth and select a shared bandwidth. The FlexusX instance then can access the IPv6 Internet through the IPv6 address.

Security Group

You can select an existing security group from the drop-down list or create a new one.

This configuration controls access to FlexusX instances within a security group or among security groups, enhancing instance security. You can define access rules for a security group to protect the FlexusX instances in the group.

When creating a FlexusX instance, you can select multiple security groups (no more than five is recommended). The access rules of all the selected security groups apply to the instance.

The security group rules affect the access and use of FlexusX instances. For details about how to configure a security group rule, see Configuring Security Group Rules for a FlexusX Instance. Enable the following common protocols and ports as needed:

• Port 80: default port for web page access through HTTP.
• Port 443: port for web page access through HTTPS.
• ICMP: used to ping FlexusX instances to check their communication statuses.
• Port 22: reserved for logging in to Linux FlexusX instances using SSH.
• Port 3389: reserved for remote desktop login to Windows FlexusX instances.

Purchase Mode

• Auto assign: The system automatically assigns an EIP with a dedicated bandwidth to each FlexusX instance. The bandwidth is configurable.
• Using existing: An existing EIP will be assigned to the FlexusX instance. If you select an existing EIP, batch creation of FlexusX instances is disabled.
• Not required: A FlexusX instance without an EIP cannot access the Internet. However, it can still be used as a FlexusX instance or be deployed in a cluster on a private network.

EIP Type

Billed By

This parameter is mandatory when Purchase Mode is set to Auto assign. If you select Bandwidth or Traffic, the system will allocate a dedicated bandwidth for you, and the bandwidth is dedicated for one EIP.

• Bandwidth: You will be billed based on the amount of bandwidth you configure.
• Traffic: You will be billed based on the actual traffic you have used.
• Shared bandwidth: You will be billed by the bandwidth shared by multiple EIPs.

Bandwidth Size

Select the bandwidth size (in Mbit/s) based on service requirements.

Cloud Eye

If you enable Cloud Eye, an agent will be automatically installed on your FlexusX instance to provide 1-minute fine-grained monitoring of its metrics, such as vCPUs, memory, network, disks, and processes.

HSS

If you enable HSS, your FlexusX instance will be provided with host security services that scan for weak passwords, system vulnerabilities, brute-force attacks, and unauthorized logins.

You can select the HSS edition as required. The basic protection trial edition is free for one month. After one month, HSS stops providing services.

FlexusX Instance Name

You can create a custom FlexusX instance name. If you purchase multiple FlexusX instances at a time, the system automatically sequences these instances.

Login Mode

• Password: A username and its initial password are used for FlexusX instance login authentication.
• Key pair: A key pair is used for FlexusX instance login authentication. You can select an existing key pair, or click Create Key Pair to create a new one.
  NOTE:

  If you choose to use an existing key pair, ensure that it is available locally, or you will not be able to log in to your FlexusX instance.

• Password from image: If a password has been set for the private image, you can select this option to use that password.
• Set password later: You can choose to set a password for your FlexusX instance later. If you select this option, remember to set a password after your FlexusX instance is created.

Create new

• Vault Name: The vault name cannot exceed 64 characters. Only letters, digits, underscores (_), and hyphens (-) are supported. for example, vault-f61e. The default naming rule is vault_xxxx.
• Capacity: Enter the vault capacity, which is required for backing up the FlexusX instance. The vault capacity cannot be smaller than that of the FlexusX instance to be backed up. Its value ranges from the total capacity of the FlexusX instance to 10,485,760 in the unit of GB.
• Backup Policy: Select a backup policy from the drop-down list, or go to the CBR console and configure a desired one.

Use existing

• Vault: Select an existing vault from the drop-down list.
• Backup Policy: Select a backup policy from the drop-down list, or go to the CBR console and configure a desired one.

Not required

Backup is not configured.

If you require this function after purchasing the FlexusX instance, log in to the CBR console and bind the desired cloud backup vault to your FlexusX instance.

Description

Add a FlexusX instance description.

User Data

For example, if you activate user root with a script, you can log in to the FlexusX instance as root. For details about how to pass user data, see Passing User Data to ECSs.

Tag

Tags the FlexusX instance. Adding tags to FlexusX instances helps you better identify and manage your FlexusX instances. You can add up to 10 tags to each instance.

Agency

When your FlexusX resources need to be shared with other accounts, or your FlexusX is delegated to professional personnel or team for management, the tenant administrator creates an agency in IAM and grants the FlexusX management permissions to the personnel or team.

The delegated account can log in to the cloud system and switch to your account to manage resources. This way, you do not need to share security credentials (such as passwords) with other accounts, ensuring the security of your account.

If you have created an agency in IAM, select the agency from the drop-down list. For more information about agencies, see Account Delegation.

FlexusX Group (Anti-affinity)

Select the FlexusX instance group you want to add your FlexusX instance to. A FlexusX instance group applies the anti-affinity policy to the instances in it so that they can be distributed on different hosts. For details about how to create a FlexusX instance group, see Managing a FlexusX Instance Group.