Updated on 2024-05-30 GMT+08:00

Buying a Single-Node Instance

This section describes how to buy a single-node instance that is compatible with InfluxDB APIs on the GeminiDB console.

Each tenant can have up to 50 GeminiDB Influx instances by default. To request a higher quota, contact customer service.


  • You have registered a Huawei Cloud account.


  1. Log in to the management console.
  2. In the service list, choose Databases > GeminiDB Influx API.
  3. On the Instances page, click Buy DB Instance.
  4. On the displayed page, select a billing mode, specify instance specifications and click Next.

    Figure 1 Billing mode and basic information
    Table 1 Billing description



    Billing Mode

    Method that the instance is billed in. The value can be Yearly/Monthly or Pay-per-use.

    • Yearly/Monthly
    • Pay-per-use
    Table 2 Basic information




    The region where the tenant is located. It can be changed in the upper left corner.


    Select the nearest region where you will access the instance from, so latency can be kept to a minimum and response will be faster. Instances deployed in different regions cannot communicate with each other over a private network. After you buy an instance, you cannot change its region.

    DB Instance Name

    The instance name:

    • Can be the same as an existing instance name.
    • Can include 4 to 64 bytes and must start with a letter. It is case-sensitive and allows only letters, digits, hyphens (-), and underscores (_).

    You can change the name of an instance after it is created. For details, see Changing an Instance Name.

    Compatible API


    DB Instance Type

    Single node

    DB Engine Version



    Availability zone where the instance is created. An AZ is a part of a region with its own independent power supplies and networks. AZs are physically isolated but can communicate with each other over a private network.

    A single-node instance can be deployed in one AZ.

    Figure 2 Specifications and storage
    Table 3 Specifications and storage



    Instance Specifications

    The specifications depend on configurations of the DFV shared resource pool and memory. Select specifications based on service requirements.

    For details about supported specifications, see Instance Specifications.


    A single-node instance can have only one node.

    Storage Space

    The storage is an integer and the minimum storage is 100 GB. You can add a minimum of 1 GB at a time.

    Figure 3 Network and database configurations

    Table 4 Network configurations




    The virtual network where the instance is created. A VPC isolates networks for different services. You can select an existing VPC or create one.

    For details about how to create a VPC, see "Creating a VPC" in the Virtual Private Cloud User Guide.

    With VPC sharing, you can also use a VPC and subnet shared by another account.

    VPC owners can share the subnets in a VPC with one or multiple accounts through Resource Access Manager (RAM). This allows for more efficient use of network resources and reduces O&M costs.

    For more information about VPC subnet sharing, see VPC Sharing in the Virtual Private Cloud User Guide.

    If there are no VPCs available, the system automatically allocates a VPC to you.

    • After a GeminiDB Influx instance is created, the VPC where the instance is deployed cannot be changed.
    • If you want to connect to a GeminiDB Influx instance using an ECS over a private network, ensure that the GeminiDB Influx instance and the ECS are in the same VPC. If they are not, create a VPC peering connection between them for access.


    A subnet where your instance is created. The subnet provides dedicated and isolated networks, improving network security.


    Creating an IPv4 subnet or selecting an existing one is recommended. IPv6 subnets are not supported.

    Security group

    A security group controls access between GeminiDB Influx instances and other services. When you select a security group, you must ensure that it allows your client to access your instances.

    If there are no security groups available, the system automatically allocates one to you.

    Table 5 Database configurations




    Username of the administrator account. The default value is rwuser.

    Administrator Password

    Password of the administrator account. The password:

    • Can include 8 to 32 characters.
    • Can include uppercase letters, lowercase letters, digits, and any of the following special characters: ~!@#%^*-_=+?
    • For security reasons, set a strong password. The system will verify the password strength.

    Keep your password secure. The system cannot retrieve it if it is lost.

    Confirm Password

    This password must be consistent with the administrator password.

    Parameter Template

    A template of parameters for creating an instance. The template contains API configuration values that are applied to one or more instances.

    After an instance is created, you can modify its parameters to better meet your service requirements. For details, see Modifying Parameters of GeminiDB Influx Instances.

    Enterprise Project

    This parameter is provided for enterprise users.

    An enterprise project groups cloud resources, so you can manage resources and members by project. The default project is default.

    Select an enterprise project from the drop-down list. For more application information about enterprise projects, see the Enterprise Management User Guide.

    Table 6 Tags




    The setting is optional. Adding tags helps you better identify and manage your GeminiDB Influx instances. Each instance supports up to 10 tags by default. To use more tags, contact customer service to apply for a quota of 20 tags.

    If your organization has configured a tag policy for GeminiDB Influx, you need to add a tag to the instance based on the tag policy. If the tag does not comply with the tag policy, the instance may fail to be created. Contact the organization administrator to learn details about the tag policy.

    A tag consists of a tag key and a tag value.

    • Tag key: Mandatory if the instance is going to be tagged.

      Each tag key must be unique for each instance. The key can include up to 36 characters, including digits, letters, underscores (_), and hyphens (-).

    • Tag value: Optional if the instance is going to be tagged

      The value can contain up to 43 characters, including digits, letters, underscores (_), periods (.), and hyphens (-).

    After an instance is created, you can click its name to view its tags on the Tags page. In addition, you can add, modify, and delete tags to, from, and of an existing instance. For details, see Managing Tags.

    Table 7 Required duration



    Required Duration

    The length of your subscription if you select Yearly/Monthly billing. Subscription lengths range from one month to three years.


    • This option is not selected by default.
    • If you select this option, the renew cycle is the same as the selected duration.

  5. On the displayed page, confirm instance details.

    • For yearly/monthly instances
      • If you need to modify the settings, click Previous.
      • If you do not need to modify the settings, read and agree to the service agreement and click Pay Now to go to the payment page and complete the payment.
    • For pay-per-use instances
      • If you need to modify the settings, click Previous.
      • If you do not need to modify the settings, read and agree to the service agreement and click Submit.

  6. On the Instances page, view and manage your instances.

    • Creating an instance takes about 5 to 9 minutes. During the process, the instance status displayed in the instance list is Creating.
    • After the creation is complete, the instance status changes to Available.

      You can click in the upper right corner of the page to refresh the instance status.

    • Automated backup is enabled by default during instance creation. A full backup is automatically triggered after an instance is created.
    • The default database port of the instance is 8635 and cannot be changed.