(Recommended) Buying a GeminiDB Influx Cluster (Performance-Enhanced) Instance

Prerequisites

• You have created a Huawei Cloud account.

Procedure

1. Log in to the Huawei Cloud console.
2. Choose Databases > GeminiDB from the service list.
3. On the Instances page, click Buy DB Instance.
4. On the displayed page, select a billing mode, select instance specifications and click Next.
   Figure 1 Billing mode and basic information
   

   Table 1 Billing Mode

   Parameter

   Description

   Billing Mode

   Yearly/Monthly Specify Required Duration. The system deducts fees from your account based on the service price. If you do not need such an instance any longer after it expires, change the billing mode to pay-per-use. For details, see Changing a Yearly/Monthly Instance to Pay-per-Use. NOTE: Yearly/Monthly instances cannot be deleted directly. If such an instance is no longer required, unsubscribe from it. For details, see How Do I Unsubscribe from a Yearly/Monthly Instance?. Yearly/Monthly instances with cloud native storage are now in OBT. To use such an instance, choose Service Tickets > Create Service Ticket in the upper right corner of the console and contact the customer service. Pay-per-use If you select this billing mode, you are billed based on how much time the instance is in use. To use an instance for a long time, change its billing mode to yearly/monthly to reduce costs. For details, see Changing a Pay-per-Use Instance to Yearly/Monthly.

   Table 2 Basic information

   Parameter	Description
   Region	Region where a tenant is located. It can be changed in the upper left corner. NOTE: To reduce network latency, select a region nearest from which you will access the instance. Instances deployed in different regions cannot communicate with each other through a private network. After you buy an instance, you cannot change its region. Cluster (performance-enhanced) instances are available only in the following region: AP-Bangkok
   DB Instance Name	The instance name: Can be the same as an existing instance name. Can contain 4 to 64 characters 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 a GeminiDB Influx Instance Name.
   Compatible API	InfluxDB GeminiDB is compatible with mainstream NoSQL APIs, including Redis, DynamoDB, Cassandra, HBase, MongoDB, and InfluxDB. You can select GeminiDB APIs by following How Do I Select an API?
   Storage Type	Classic: classic architecture with decoupled storage and compute Cloud native: more flexible, new-gen version with support for more AZs NOTE: Cloud native storage is only available for cluster (performance-enhanced) instances. The way you use instances with classic or cloud native storage is similar. Cloud native storage supports more AZs. If both classic and cloud native are supported, you can select any of them.
   DB Instance Type	Cluster (performance-enhanced) Compared with cluster instances, instances in a performance-enhanced cluster support a larger scale and higher read/write performance.
   Version	If Storage Type is set to Classic, the version is fixed at 1.8. If Storage Type is set to Cloud native, the version is fixed at 1.7.
   AZ	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. Instances can be deployed in a single AZ or three AZs. To deploy instances in a single AZ, select one AZ. To deploy instances across AZs for disaster recovery, select three AZs, where the instance nodes will be evenly distributed.

   Figure 2 Specifications and storage
   

   

   

   Table 3 Specifications and storage

   Parameter	Description
   Data Node Specifications	Data nodes provide read and write capabilities for time series databases. 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.
   Data Nodes	Select the number of data nodes based on service requirements. After an instance is created, you can add nodes. For details, see Adding Instance Nodes.
   Storage Space	The storage is an integer, and the minimum storage is 100 GB. You can add at least 1 GB each time.
   Auto Scale	You can determine whether to enable it based on the site requirements. This function is now in OBT. To use it, choose Service Tickets > Create Service Ticket in the upper right corner of the console and contact the customer service. Trigger If Available Storage Drops To: When the available storage drops to or below the specified threshold, autoscaling will be triggered. The value can be 10%, 15%, and 20%. Increase By: percentage that your instance storage will be scaled up at. The value can be 10%, 15%, or 20%. Storage Limit: limit of storage that can be automatically scaled up to
   Purchase Cold Storage	Cold storage stores historical data that is not frequently queried. When purchasing a GeminiDB Influx instance, you can purchase cold storage and configure the retention policy to specify the retention period of hot data. In this way, hot data will be automatically archived in cold storage after the retention period expires, reducing storage costs. The value can be: Yes Set the cold storage capacity to suit your service requirements. No You do not want to purchase cold storage. For more information about cold and hot data separation, see Cold and Hot Data Separation. If you do not enable cold storage when creating an instance, you can enable it later based on service requirements. For details, see Enabling Cold Storage. NOTE: Cold storage cannot be disabled after being enabled.
   Cold Storage	The cold storage space is an integer from 500 GB to 1,024,000 GB. You can add at least a multiple of 10 GB each time. After an instance is created, you can scale up its cold storage. For details, see Scaling Up Cold Storage.
   Disk Encryption	You need to set this parameter if Storage Type is set to Cloud native. Disable: Data is not encrypted. Enable: Your data will be encrypted on disks and stored in ciphertext after you create an instance. Key Name: Select an existing key or create one. NOTE: This function is now in OBT. To use it, choose Service Tickets > Create Service Ticket in the upper right corner of the console and contact the customer service. This parameter is only available for instances with cloud native storage. After an instance is created, the disk encryption status and key cannot be changed. The key cannot be disabled, deleted, or frozen when used, or the database becomes unavailable. For details about how to create a key, see "Creating a Key" in Data Encryption Workshop User Guide.

   Figure 3 Network and database configurations
   

   Table 4 Network

   Parameter	Description
   VPC	Virtual private network where your instances are located. A VPC isolates networks for different services. You can select an existing VPC or create a VPC. For details about how to create a VPC, see "Creating a VPC" in Virtual Private Cloud User Guide. If there are no VPCs available, the system allocates resources to you by default. NOTE: After a GeminiDB Influx instance is created, the VPC where the instance is deployed cannot be changed. To connect a GeminiDB Influx instance to an ECS over a private network, ensure they are in the same VPC. If they are not, create a VPC peering connection between them.
   Subnet	A subnet where your instance is created. The subnet provides dedicated and isolated networks, improving network security. NOTE: An IPv6 subnet cannot be associated with your instance. Select an IPv4 subnet.
   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 allocates resources to you by default.

   Table 5 Database configuration

   Parameter	Description
   Administrator	The default administrator account is rwuser.
   Administrator Password	Password of the administrator account. The password: Must be 8 to 32 characters long. The password must contain 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	Enter the administrator password again.
   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 information about enterprise projects, see Enterprise Management User Guide.

   Table 6 Tags

   Parameter

   Description

   Tag

   Tags a GeminiDB Influx instance. This parameter is optional. Adding tags helps you better identify and manage your instances. A maximum of 20 tags can be added for each instance. A tag consists of a tag key and a tag value. A tag key is mandatory if the instance is going to be tagged. Each tag key is unique for each instance. It can contain 1 to 128 characters, cannot start with _sys_, and cannot start or end with a space. Only letters, digits, spaces, and the following special characters are allowed: -_@.:/+= A tag value is optional if the instance is going to be tagged. The value can be empty. The value can contain a maximum of 255 characters. Only letters, digits, spaces, and the following special characters are allowed: _.-:+=@/ After a DB instance is created, you can view its tag details on the Tags tab. In addition, you can add, modify, and delete tags of an existing instance. For details, see Managing Tags.

   Table 7 Required duration

   Parameter	Description
   Required duration	The length of your subscription if you select Yearly/Monthly billing. Subscription lengths range from one month to three years.
   Auto-renewing an Instance	By default, this option is not selected. If you select this option, the auto-renew cycle is determined by the selected required duration.

5. On the displayed page, confirm the instance details.
   • Yearly/Monthly
     • To modify the configurations, click Previous.
     • If no modification is required, read and agree to the service agreement, click Pay Now, and complete the payment.
   • Pay-per-use
     • To modify the configurations, click Previous.
     • If no modification is required, read and agree to the service agreement and click Submit.

6. Click Back to Instance Management to go to the instance list.
7. On the Instances page, view and manage your instances.
   • Creating an instance takes about 5 to 9 minutes. During the process, the instance status becomes Creating.
   • After the instance is created, its status becomes Available.

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

   • An automated backup policy is enabled by default during instance creation. A full backup is automatically triggered after a DB instance is created.
   • The default database port of the instance is 8635 and cannot be changed.
     Figure 4 Available instance