Quick Config

Prerequisites

• You have registered a HUAWEI CLOUD account.

Procedure

1. Log in to the management console.
2. Click in the upper left corner and select a region and a project.
3. Click in the upper left corner of the page and choose Databases > Document Database Service.
4. On the Instances page, click Buy DB Instance.
5. On the displayed page, click the Quick Config tab.
6. Select a billing mode. Specify instance details and click Next.
   Figure 1 Basic configurations
   

   Table 1 Basic configurations

   Parameter	Description
   Billing Mode	Select a billing mode, Yearly/Monthly or Pay-per-use. For yearly/monthly instances Specify Required Duration, and the system deducts the fees incurred from your account based on the service price. If you do not expect to continue using the instance much after it expires, you can change the billing mode from yearly/monthly to pay-per-use. For details, see Changing the Billing Mode from Yearly/Monthly to Pay-per-Use.. NOTE: Instances billed on a yearly/monthly basis cannot be deleted. They can only be unsubscribed from. For details, see Unsubscribing from a Yearly/Monthly Instance. For pay-per-use instances You are billed for usage based on how much time the service is in use. If you expect to use the service extensively over a long period of time, you can change its billing mode from pay-per-use to yearly/monthly to reduce costs. For details, see Changing the Billing Mode from Pay-per-Use to Yearly/Monthly..
   Region	The region where the resource is located. NOTE: Instances deployed in different regions cannot communicate with each other through a private network, and you cannot change the region of an instance once it is purchased. Exercise caution when selecting a region.
   AZ	An AZ is a part of a region with its own independent power supply and network. AZs are physically isolated but can communicate through internal network connections. Instances can be deployed in a single AZ or three AZs. If your service requires low network latency between instances, you deploy the components of the instance in the same AZ. If you select a single AZ to deploy your instance, anti-affinity deployment is used by default. With an anti-affinity deployment, your primary, secondary, and hidden nodes are deployed on different physical machines for high availability. If you want to deploy an instance across AZs for disaster recovery, select three AZs. In this deployment mode, the primary, secondary, and hidden nodes are evenly distributed across three AZs. NOTE: The 3-AZ deployment is not available in all regions. If the 3-AZ option is not displayed on the page for you to buy an instance, try a different region.
   DB Instance Type	Select Replica set. A replica set consists of the primary node, secondary node, and hidden node. If a primary node goes down or becomes faulty, a secondary node is automatically assigned to the primary role and continues normal operation. If a secondary node is unavailable, a hidden node will take the role of the secondary to ensure high availability.
   Compatible MongoDB Version	4.2 4.0 3.4 NOTE: DDS 4.2 is restricted for commercial use. For details, see the DDS notices. To use this version, contact customer service to apply for the required permissions.
   CPU Type	DDS supports x86 and Kunpeng CPU architectures. x86 x86 CPUs use the Complex Instruction Set Computing (CISC) instruction set. Each instruction can be used to execute low-level hardware operations. CISC instructions vary in length, and tend to be complicated and slow compared to Reduced Instruction Set Computing (RISC). Kunpeng The Kunpeng CPU architecture uses RISC. The RISC instruction set is smaller and faster than CISC, thanks to the simplified architecture. Kunpeng CPUs also offer a better balance between power and performance than x86. Kunpeng CPUs offer a high density, low power option that is more cost effective for heavy workloads.
   Specifications	With an x86 architecture, you have the following options: General-purpose (s6): S6 instances are suitable for applications that require moderate performance generally but occasional bursts of high performance, such as light-workload web servers, enterprise R&D and testing environments, and low- and medium-performance databases. Enhanced II (c6): C6 instances have multiple technologies optimized to provide stable powerful compute performance. 25 GE intelligent high-speed NICs are used to provide ultra-high bandwidth and throughput, making it an excellent choice for heavy-load scenarios. It is suitable for websites, web applications, general databases, and cache servers that have higher performance requirements for compute and network resources; and medium- and heavy-load enterprise applications.
   Recommended Configuration	Currently, medium- and lightweight database specifications and customized specifications are supported NOTE: If an instance has less than 16 vCPUs, the storage space ranges from 10 GB to 2000 GB. If an instance has more than 16 vCPUs, the storage space ranges from 10 GB to 4000 GB.

   Figure 2 Network, Required Duration, and Quantity
   

   Table 2 Network settings

   Parameter	Description
   VPC	The VPC where your DB instances are located. A VPC isolates networks for different services. It allows you to easily manage and configure private networks and change network configurations. You need to create or select the required VPC. For details about how to create a VPC, see section "Creating a VPC" in the Virtual Private Cloud User Guide. For details about the constraints on the use of VPCs, see Connection Methods. If there are no VPCs available, DDS creates one for you by default.
   Subnet	A subnet provides dedicated network resources that are logically isolated from other networks for security reasons. After the instance is created, you can change the private IP address assigned by the subnet. For details, see Changing a Private IP Address. NOTE: IPv6 subnets are not supported. You are advised to create and select IPv4 subnets.
   Security Group	A security group controls access between DDS and other services for security. If there are no security groups available, DDS creates one for you by default. NOTE: Ensure that there is a security group rule configured that allows clients to access instances. For example, select an inbound TCP rule with the default port 8635, and enter a subnet IP address or select a security group that the instance belongs to.
   Enterprise Project	Only enterprise users can use this function. To use this function, contact customer service. An enterprise project is a cloud resource management mode, in which cloud resources and members are centrally managed by project. Select an enterprise project from the drop-down list. The default project is default. For more information about enterprise project, see Enterprise Management User Guide.

   Table 3 Required duration and quantity

   Parameter	Description
   Required Duration	The system will automatically calculate the fee based on the validity period you have selected.
   Auto-renew	By default, this option is not selected. If you select this option, the auto-renew cycle is determined by the length of the subscription.
   Quantity	The purchase quantity depends on the replica set instance quota. If your current quota does not allow you to purchase the required number of instances, you can apply for increasing the quota as prompted. Yearly/Monthly instances that were purchased in batches have the same specifications except for the instance name and ID.

   Table 4 Default configuration items

   Specifications	Value	Editable After Instance Creation
   DB Instance Name	dds-c1c1	Yes
   CPU Type	x86	No
   Storage Engine	WiredTiger	No
   Password Settings	Not configured	Yes
   SSL	Disabled	Yes
   Database Port	8635	Yes
   Cross-CIDR Access	Not configured	Yes
   Replica Set Parameter Template	Default-DDS-4.0-Replica	Yes
   Tags	Not configured	Yes
   Advanced Settings	Not configured	Yes

   

   • Some settings are configured by default during purchase, but can still be modified after the instance is created. If you do not see a setting listed for your instance, click Custom Config.
   • Instance performance depends on the specifications you select during creation. The hardware configuration items that can be selected include the node class and storage space.

7. On the displayed page, confirm the instance details.
   • For yearly/monthly instances
     • If you need to modify the specifications, click Previous to return to the previous page.
     • If you do not need to modify the specifications, 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 specifications, click Previous to return to the previous page.
     • If you do not need to modify the specifications, read and agree to the service agreement and click Submit to start creating the instance.

8. After a DDS instance is created, you can view and manage it on the Instances page.
   • When an instance is being created, the status displayed in the Status column is Creating. This process takes about 15 minutes. After the creation is complete, the status changes to Available.
   • DDS enables the automated backup policy by default. After an instance is created, you can modify or disable the automated backup policy. An automated full backup is immediately triggered after the creation of an instance.
   • Yearly/Monthly instances that were purchased in batches have the same specifications except for the instance name and ID.