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TencentDB for MongoDB
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    Creating TencentDB for MongoDB Instance

    Last updated: 2024-04-02 17:34:03
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      Overview

      The TencentDB for MongoDB console makes it simple to work with database instances without writing code or running programs. This document describes how to purchase and configure a TencentDB for MongoDB instance as described in Viewing Instance Details.

      Prerequisites

      You have registered a Tencent Cloud account and completed identity verification.
      Click here to register a Tencent Cloud account.
      Click here to complete identity verification.
      You have determined a region and AZ for the instance. For more information, see Regions and AZs.
      You have determined the specification and performance requirements of the instance. For more information, see Product Specifications and Performance.
      You have determined a VPC and security group for the instance. For more information, see Creating VPC and Configuring Security Group. Currently, access over the public network isn't supported.
      You have checked out the billing details of the instance. For more information, see Billing Overview. Database fees for one hour will be frozen when you create a pay-as-you-go database. Make sure that your account balance is sufficient before making a purchase.
      You have determined the business project of the instance. You can create a project in Project Management in the Account Center.
      You have understood the differences between each database versions. For more information, see Storage Engine and Version.

      Directions

      1. Log in to the TencentDB for MongoDB purchase page with a Tencent Cloud account.
      2. Specify instance configurations as needed. Required configuration items are as follows.
      Parameter
      Required
      Description
      Billing Modes
      Yes
      Pay-as-you-go is supported. For more information, see Billing Overview.
      Region
      Yes
      Select a region where your instance resides. You should select a region closest to you to reduce access latency.
      Note that the region cannot be changed after the instance is successfully created.
      We recommend that you select the same region as the CVM instance for private network communication.
      AZ
      Yes
      Enable Multi-AZ Deployment as needed. Multi-AZ deployment refers to deploying an instance across different AZs in the same region. Compared with single-AZ deployment, it has a higher availability and disaster recovery capability.
      If your instance is deployed in the same AZ, select an AZ for the primary node from the drop-down list next to Primary Node.
      If your instance is deployed across different AZs, select an AZ for the primary node from the drop-down list next to Primary Node and specify the AZ for each secondary node in each drop-down list next to Secondary Node n (n=1,2,3,4,5,6).
      If the read-only node count is configured, configure the AZ for each read-only node.
      After creating the instance, you can change the instance AZ.
      Database Version
      Yes
      Select a database version from 3.2, 3.6, 4.0, 4.2, and 4.4. Currently, v3.2 is no longer for sales. We recommend that you select a later version. For more information on how to select an appropriate version, see the version description in Storage Engine and Version.
      After purchasing an instance, you can upgrade its version. For more information, see Version Upgrade.
      Architecture Type
      Yes
      Select a system architecture for the instance cluster. Supported architectures include replica set, sharded cluster, and single-node. The single-node architecture is no longer for sales.
      You need to understand the use cases of different architectures and select an appropriate one based on the actual data volume of your business. For more information, see System Architecture. Currently, architecture upgrade isn't supported.
      Storage engine
      Yes
      The default storage engine is WiredTiger.
      Mongod Specs
      Yes
      Select the computing specification of the instance from the drop-down list. The higher the specification, the higher the IOPS. For supported specifications, see Product Specifications.
      After creating an instance, you can adjust its computing specification. For detailed directions, see Adjusting Instance Specification.
      Mongod Shard Count
      Yes
      This parameter will be displayed if you select Sharded Cluster as the Architecture Type. It is used to set the mongod shard quantity in a sharded cluster instance, and its value range is [1,20]. Each shard is a replica set. The more the shards, the larger the cluster storage capacity. You can select a shard quantity as needed.
      After creating an instance, you can adjust the mongod shard quantity. For detailed directions, see Adjusting Instance Specification.
      Disk Capacity
      Yes
      Select the storage capacity of the instance on the slider.
      The range of the disk capacity varies by mongod specification. For more information, see Product Specifications.
      The default oplog storage space is 10% of the selected storage capacity. You can adjust the oplog capacity in the instance list in the console. For detailed directions, see Adjusting Oplog Capacity.
      After creating an instance, you can adjust its disk capacity. For detailed directions, see Adjusting Instance Specification.
      Primary and Secondary Nodes Count
      Yes
      This parameter will be displayed if you select Replica Set as the Architecture Type.
      It is one-primary-two-secondary architecture with three storage nodes by default. Currently, you cannot customize the number of secondary nodes. You can select five (one-primary-four-secondary) or seven (one-primary-six-secondary) nodes from the drop-down list.
      After creating the instance, you can add more secondary nodes per shard. For detailed directions, see Adding Secondary Node.
      Primary and Secondary Nodes Count per shard
      Yes
      This parameter will be displayed if you select Sharded Cluster as the Architecture Type. It is used to set the number of nodes per shard in a sharded cluster instance.
      The system adopts a one-primary-two-secondary architecture with three nodes by default, that is, each shard has three nodes in a in one-primary-two-secondary architecture. You can select five (one-primary-four-secondary) or seven (one-primary-six-secondary) nodes from the drop-down list. Currently, you cannot customize the number of nodes.
      After creating the instance, you can add more secondary nodes per shard. For detailed directions, see Adding Secondary Node.
      Read-Only Node Count
      Yes
      The number of read-only nodes.
      You can configure 0 or 1–5 read-only nodes.
      Currently, only v4.0, v4.2, and v4.4 support this parameter, while v3.6 doesn't.
      After creating the instance, you can add more read-only nodes. For detailed directions, see Adding Read-Only Node.
      Specs Description
      -
      This parameter calculates the maximum number of connections to the instance based on the configured mongod specification to help you determine whether the current specification meets the expectation.
      Mongos Specs
      Yes
      This parameter will be displayed if you select Sharded Cluster as the Architecture Type. It is used to configure mongos specification.
      After you configure the mongod specification, the corresponding mongos specification will be selected by default. For example, if you select 2-core 4 GB MEM for mongod, the mongos specification will be configured as 1-core 2 GB MEM by default. After the mongos specification is upgraded, fees will be charged based on the new specification. For more information, see MongoDB Pricing.
      The number of connections to the sharded cluster instance is subject to the selected mongos node specification and quantity. You can view the maximum number of connections of the instance in Specs Description.
      After creating the instance, you can adjust the mongos specification. For detailed directions, see Adjusting Mongos Node Specification.
      Mongos Nodes Count
      Yes
      This parameter will be displayed if you select Sharded Cluster as the Architecture Type. It is used to set mongos node quantity. If the instance is deployed in the same AZ, it can contain 3–32 mongos nodes. If you select Multi-AZ Deployment to deploy the instance across different AZs, the instance can contain 6–32 mongos nodes.
      Adding more Mongos instances will result in additional charges. For more information, see MongoDB Pricing.
      After creating the instance, you can adjust the mongos node quantity. For detailed directions, see Adding Mongos Node.
      Network Type
      -
      Only VPC is supported.
      IPv4 Network
      Yes
      Select a specific VPC and subnet.
      You can use a CVM instance to connect to the automatically assigned private network address of a TencentDB instance. This method utilizes the high-speed private network of Tencent Cloud and features low delay. Note that both instances must be under the same account in the same VPC in the same region. For more information, see Connecting to TencentDB for MongoDB Instance.
      VPCs are region-specific (e.g., Guangzhou), while subnets are AZ-specific (e.g., Guangzhou Zone 1). One VPC can be divided into one or multiple subnets, which are interconnected over the private network by default. Different VPCs are isolated over the private network by default, no matter whether they are in the same or different regions.
      You can switch the VPC after instance purchase as instructed in Configuring Network.
      You can also click Create VPCs and Create Subnets to create a required network environment. For detailed directions, see Creating VPC.
      IPv6 Network
      -
      IPv6 address access is currently not supported in the current region and subnet.
      Security Group
      Yes
      Set security group rules to control the inbound traffic to your database.
      You can either select a security group from the Existing Security Groups drop-down list or click Custom Security Groups to create one and set new inbound rules. For more information, see Security Group.
      Set Project
      Yes
      Assign your instance to a project for easy management.
      Tags
      No
      Add tags to your instance for easy classification and management. Click Add to select tag keys and values.
      Instance Name
      Yes
      Set the instance name. The default name is 500.
      You can enter up to 60 letters, digits, hyphens, and underscores.
      Set Password
      Yes
      Set the password authentication mode of the instance.
      Password Authentication: You need to set an instance password for database access. For more information, see Connecting to TencentDB for MongoDB Instance.
      Password-Free Access: You don't need to set a password. For more information, see Accessing Instance Without Authentication.
      Password
      No
      This parameter will be displayed if you select Password Authentication. It is used to set the access password of the instance. Password requirements:
      Minimum of 8 characters, maximum of 32 characters.
      A combination of uppercase letters A-Z, lowercase letters a-z, and numbers 0-9.
      Symbols: !@#%^*()_.
      Do not use all letters or all numbers.
      Confirm Password
      No
      Enter your password again.
      Purchase Quantity
      Yes
      You can purchase up to 30 instances in each region and up to 10 instances each time.
      Total Fees
      Yes
      Hourly fees will be displayed if you select Pay as You Go. For more information, see MongoDB Pricing.
      3. After verifying that the parameters are correctly configured, click Buy Now. After the purchase success message is displayed, click Go to Console. After the instance's status becomes Running in the instance list, you can use it.

      Related Operations

      Use a CVM instance to directly access the private network address of the TencentDB instance. For more information, see Connecting to TencentDB for MongoDB Instance.
      View the instance list and instance details. For more information, see Viewing Instance Details.
      
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