Creating a DB Instance_Document Database Service

Function

This API is used to create cluster, replica set, and single node instances.

Constraints

Currently, creating yearly/monthly DB instances is not supported.

URI

URI format
POST /v3/{project_id}/instances

Parameter description

**Table 1** Parameter description
Name	Mandatory	Description
project_id	Yes	Specifies the project ID of a tenant in a region.

Requests

Parameter description

**Table 2** Parameter description
Name	Mandatory	Type	Description
name	Yes	String	Specifies the DB instance name. The DB instance name of the same DB engine is unique for the same tenant. The value must be 4 to 64 characters in length and start with a letter (from A to Z or from a to z). It is case-sensitive and can contain only letters, digits (from 0 to 9), hyphens (-), and underscores (_).
datastore	Yes	Object	Specifies the database information. For more information, see Table 3.
region	Yes	String	Specifies the region ID. The value cannot be empty. For details about how to obtain this parameter value, see Regions and Endpoints.
availability_zone	Yes	String	Specifies the AZ ID. For details, see az_status returned in Querying All DB Instance Specifications. A non-DeC user can select multiple AZs to create a cross-AZ cluster. Currently, DeC users cannot create cross-AZ clusters. The value cannot be empty. For details about how to obtain this parameter value, see Regions and Endpoints.
vpc_id	Yes	String	Specifies the VPC ID. To obtain this parameter value, use either of the following methods: Method 1: Log in to VPC console and view the VPC ID on the VPC details page. Method 2: Query the VPC ID through the VPC API. For details, see Querying VPCs.
subnet_id	Yes	String	Specifies the network ID of the subnet. To obtain this parameter value, use either of the following methods: Method 1: Log in to VPC console and click the target subnet on the Subnets page. You can view the network ID on the displayed page. Method 2: Query the network ID through the VPC API. For details, see Querying Subnets.
security_group_id	Yes	String	Specifies the security group ID. To obtain the security group ID, perform either of the following methods: Method 1: Log in to VPC console. Choose Access Control > Security Groups in the navigation pane on the left. On the displayed page, click the target security group. You can view the security group ID on the displayed page. Method 2: Query the security group through the VPC API. For details, see Querying Security Groups.
password	No	String	Specifies the database password. The value must be 8 to 32 characters in length and contain uppercase letters (A to Z), lowercase letters (a to z), digits (0 to 9), and special characters, such as ~!@#%^*-_=+? You are advised to enter a strong password to improve security, preventing security risks such as brute force cracking. If this parameter is not transferred, set a password for the instance before connecting to the instance. For details, see Resetting the Administrator Password.
disk_encryption_id	No	String	Specifies the key ID used for disk encryption. The string must comply with UUID regular expression rules. If this parameter is not transferred, disk encryption is not performed.
mode	Yes	String	Specifies the instance type. Cluster, replica set, and single node instances are supported. Valid value: Sharding ReplicaSet Single
flavor	Yes	Array of objects	Specifies the instance specifications. For more information, see Table 4. For details about how to obtain the value, see the response values of flavor in Querying All DB Instance Specifications.
backup_strategy	No	Object	Specifies the advanced backup policy. For more information, see Table 5.
enterprise_project_id	No	String	Specifies the enterprise project ID. This parameter is not transferred for users who have not enabled the enterprise multi-project service. If this parameter is not transferred for a user who has enabled the enterprise multi-project service, the value is the default enterprise project. To obtain the enterprise project ID, see the id value in the enterprise_project field data structure table in section "Querying the Enterprise Project List" of the Enterprise Management API Reference.
ssl_option	No	String	Specifies whether to enable or disable SSL. Valid value: The value 0 indicates that SSL is disabled by default. The value 1 indicates that SSL is enabled by default. If this parameter is not transferred, SSL is enabled by default.
dss_pool_id	No	String	Specifies the dedicated storage ID of the DeC user. The value is left blank by default. Only DeC users support this parameter.
server_group_policies	No	Array of strings	Specifies the names of the policies associated with the ECS group of the DeC user. Only DeC users support this parameter. The values are as follows: anti-affinity indicates that anti-affinity deployment is enabled for the DDS instance. To ensure high availability, the primary, secondary, and hidden nodes are created on different physical machines. If this parameter is not specified for Dec users, anti-affinity deployment is disabled by default.

**Table 3** datastore field data structure description
Name	Mandatory	Type	Description
type	Yes	String	Specifies the database type. The value is DDS-Community.
version	Yes	String	Indicates the database version. Versions 3.2, 3.4, and 4.0 are supported. The value is 3.2, 3.4, or 4.0.
storage_engine	Yes	String	Specifies the storage engine. Currently, DDS supports the WiredTiger storage engine. The value is wiredTiger.

**Table 4** flavor field data structure description
Name	Mandatory	Type	Description
type	Yes	String	Specifies the node type. Valid value: For a cluster instance, the value can be mongos, shard, or config. For a replica set instance, the value is replica. For a single node instance, the value is single.
num	Yes	Integer	Specifies node quantity. Valid value: In a cluster instance, the number of mongos nodes ranges from 2 to 32. In a cluster instance, the number of shard nodes ranges from 2 to 32. config: The value is 1. replica: The value is 1. single: The value is 1.
storage	This parameter is optional for all nodes except mongos and invalid for mongos.	String	Specifies the disk type. Valid value: ULTRAHIGH, which indicates the type SSD. This parameter is valid for the shard and config nodes of a cluster instance, replica set instances, and single node instances. This parameter is invalid for mongos nodes. Therefore, you do not need to specify the storage space for mongos nodes.
size	This parameter is mandatory for nodes except mongos and invalid for mongos.	Integer	Specifies the disk size. The value must be a multiple of 10. The unit is GB. For a cluster instance, the storage space of a shard node can be 10 to 2000 GB, and the config storage space is 20 GB. This parameter is invalid for mongos nodes. Therefore, you do not need to specify the storage space for mongos nodes. For a replica set instance, the value ranges from 10 to 3000. For a single node instance, the value ranges from 10 to 1000.
spec_code	Yes	String	Specifies the resource specification code. For details about how to obtain the value, see the response values of spec_code in Querying All DB Instance Specifications. In a cluster instance, multiple specifications need to be specified. All specifications must be of the same series, that is, general-purpose (s6), enhanced (c3), or enhanced II (c6). Example: dds.mongodb.s6.large.4.mongos and dds.mongodb.s6.large.4.config have the same specifications. dds.mongodb.s6.large.4.mongos and dds.mongodb.c3.large.4.config are not of the same specifications.

**Table 5** backup_strategy field data structure description
Name	Mandatory	Type	Description
start_time	Yes	String	Specifies the backup time window. Automated backups will be triggered during the backup time window. The value cannot be empty. It must be a valid value in the "hh:mm-HH:MM" format. The current time is in the UTC format. The HH value must be 1 greater than the hh value. The values of mm and MM must be the same and must be set to 00. Example value: 23:00-00:00
keep_days	No	String	Specifies the number of days to retain the generated backup files. The value range is from 0 to 732. If this parameter is set to 0, the automated backup policy is not set. If this parameter is not transferred, the automated backup policy is enabled by default. Backup files are stored for seven days by default.

The values of region and availability_zone are used as examples.

Request header

POST https://DDS endpoint/v3/{project_id}/instances.

Example request

Create a cluster instance:

{
  "name": "test-cluster-01",
  "datastore": {
    "type": "DDS-Community",
    "version": "3.4",
    "storage_engine": "wiredTiger"
  },
  "region": "aaa",
  "availability_zone": "bbb",
  "vpc_id": "674e9b42-cd8d-4d25-a2e6-5abcc565b961",
  "subnet_id": "f1df08c5-71d1-406a-aff0-de435a51007b",
  "security_group_id": "7aa51dbf-5b63-40db-9724-dad3c4828b58",
  "password": "Test#%0_",
  "mode": "Sharding",
  "flavor": [
    {
      "type": "mongos",
      "num": 2,
      "spec_code": "dds.c3.medium.4.mongos"
    },
    {
      "type": "shard",
      "num": 2,
      "storage": "ULTRAHIGH",
      "size": 20,
      "spec_code": "dds.c3.medium.4.shard"
    },
    {
      "type": "config",
      "num": 1,
      "storage": "ULTRAHIGH",
      "size": 20,
      "spec_code": "dds.c3.large.2.config"
    }
  ],
  "backup_strategy": {
    "start_time": "23:00-00:00",
    "keep_days": "8"
  },
  "ssl_option":"1"
}

Create a cross-AZ cluster instance.

{
  "name": "test-cluster-01",
  "datastore": {
    "type": "DDS-Community",
    "version": "3.4",
    "storage_engine": "wiredTiger"
  },
  "region": "aaa",
  "availability_zone": "aaa,bbb,ccc",
  "vpc_id": "674e9b42-cd8d-4d25-a2e6-5abcc565b961",
  "subnet_id": "f1df08c5-71d1-406a-aff0-de435a51007b",
  "security_group_id": "7aa51dbf-5b63-40db-9724-dad3c4828b58",
  "password": "Test#%0_",
  "mode": "Sharding",
  "flavor": [
    {
      "type": "mongos",
      "num": 2,
      "spec_code": "dds.c3.medium.4.mongos"
    },
    {
      "type": "shard",
      "num": 2,
      "storage": "ULTRAHIGH",
      "size": 20,
      "spec_code": "dds.c3.medium.4.shard"
    },
    {
      "type": "config",
      "num": 1,
      "storage": "ULTRAHIGH",
      "size": 20,
      "spec_code": "dds.c3.large.2.config"
    }
  ],
  "backup_strategy": {
    "start_time": "23:00-00:00",
    "keep_days": "8"
  },
  "ssl_option":"1"
}

Create a replica set instance.

{
  "name": "test-replicaset",
  "datastore": {
    "type": "DDS-Community",
    "version": "3.4",
    "storage_engine": "wiredTiger"
  },
  "region": "aaa",
  "availability_zone": "bbb",
  "vpc_id": "674e9b42-cd8d-4d25-a2e6-5abcc565b961",
  "subnet_id": "f1df08c5-71d1-406a-aff0-de435a51007b",
  "security_group_id": "7aa51dbf-5b63-40db-9724-dad3c4828b58",
  "password": "Test#%0_",
  "mode": "ReplicaSet",
  "flavor": [
    {
      "type": "replica",
      "num": 1,
      "storage": "ULTRAHIGH",
      "size": 30,
      "spec_code": "dds.s2.medium.4.shard"
    }
  ],
  "backup_strategy": {
    "start_time": "23:00-00:00",
    "keep_days": "8"
  },
  "ssl_option":"1"
}

Create a single node instance.

{
  "name": "test-singlenode",
  "datastore": {
    "type": "DDS-Community",
    "version": "3.4",
    "storage_engine": "wiredTiger"
  },
  "region": "aaa",
  "availability_zone": "bbb",
  "vpc_id": "674e9b42-cd8d-4d25-a2e6-5abcc565b961",
  "subnet_id": "f1df08c5-71d1-406a-aff0-de435a51007b",
  "security_group_id": "7aa51dbf-5b63-40db-9724-dad3c4828b58",
  "password": "Test#%0_",
  "mode": "Single",
  "flavor": [
    {
      "type": "single",
      "num": 1,
      "storage": "ULTRAHIGH",
      "size": 30,
      "spec_code": "dds.c3.medium.4.single"
    }
  ],
  "backup_strategy": {
    "start_time": "23:00-00:00",
    "keep_days": "8"
  },
  "ssl_option":"1"
}

Responses

Parameter description

**Table 6** Parameter description
Name	Type	Description
id	String	Indicates the DB instance ID.
name	String	Same as the request parameter.
datastore	Object	Indicates the database information, which is the same as the request parameter. For more information, see Table 3.
created	String	Indicates the creation time in the following format: yyyy-mm-dd hh:mm:ss.
status	String	Indicates the DB instance status. The value is creating.
region	String	Indicates the region ID, which is the same as the request parameter.
availability_zone	String	Indicates the AZ ID, which is the same as the request parameter.
vpc_id	String	Indicates the VPC ID, which is the same as the request parameter.
subnet_id	String	Indicates the network ID of the subnet, which is the same as the request parameter.
security_group_id	String	Indicates the security group ID, which is the same as the request parameter.
disk_encryption_id	String	Indicates the ID of the disk encryption key, which is the same as the request parameter.
mode	String	Indicates the instance type, which is the same as the request parameter.
flavor	Array of objects	Indicates the instance specification, which is the same as the request parameter. For more information, see Table 4.
backup_strategy	Object	Indicates the advanced backup policy, which is the same as the request parameter. For more information, see Table 5.
enterprise_project_id	String	Indicates the enterprise project ID. If the value is 0, the resource belongs to the default enterprise project.
ssl_option	String	Indicates whether to enable SSL, which functions the same as the request parameter.
dss_pool_id	String	Specifies the DSS storage pool ID, which is the same as the request parameter.
job_id	String	Indicates the ID of the workflow for creating a DB instance.

The values of region and availability_zone are used as examples.

Response example

Cluster instance:

{ 
    "id": "39b6a1a278844ac48119d86512e0000bin02",
    "name": "test-cluster-01",
    "datastore": {
        "type": "DDS-Community",
        "version": "3.4",
        "storage_engine": "wiredTiger"
    },
    "created": "2019-01-16 09:34:36",
    "status": "creating",
    "region": "aaa",
    "availability_zone": "bbb",
    "vpc_id": "674e9b42-cd8d-4d25-a2e6-5abcc565b961",
    "subnet_id": "f1df08c5-71d1-406a-aff0-de435a51007b",
    "security_group_id": "7aa51dbf-5b63-40db-9724-dad3c4828b58",
    "disk_encryption_id": "",
    "mode": "Sharding",
    "flavor": [
        {
            "type": "mongos",
            "num": 2,
            "spec_code": "dds.c3.medium.4.mongos"
        },
        {
            "type": "shard",
            "num": 2,
            "spec_code": "dds.c3.medium.4.shard",
            "size": 20
        },
        {
            "type": "config",
            "num": 1,
            "spec_code": "dds.c3.large.2.config",
            "size": 20
        }
    ],
    "backup_strategy": {
        "start_time": "23:00-00:00",
        "keep_days": "8"
    },
    "enterprise_project_id": "",
    "ssl_option":"1",
    "job_id": "c010abd0-48cf-4fa8-8cbc-090f093eaa2f"
}

Replica set instance:

{
    "id": "46dfadfd2b674585a430217f23606cd7in02",
    "name": "test-replicaset",
    "datastore": {
        "type": "DDS-Community",
        "version": "3.4",
        "storage_engine": "wiredTiger"
    },
    "created": "2019-01-16 09:33:08",
    "status": "creating",
    "region": "aaa",
    "availability_zone": "bbb",
    "vpc_id": "674e9b42-cd8d-4d25-a2e6-5abcc565b961",
    "subnet_id": "f1df08c5-71d1-406a-aff0-de435a51007b",
    "security_group_id": "7aa51dbf-5b63-40db-9724-dad3c4828b58",
    "disk_encryption_id": "",
    "mode": "ReplicaSet",
    "flavor": [
        {
            "type": "replica",
            "num": 1,
            "spec_code": "dds.s2.medium.4.shard",
            "size": 30
        }
    ],
    "backup_strategy": {
        "start_time": "23:00-00:00",
        "keep_days": "7"
    },
    "enterprise_project_id": "",
    "ssl_option":"1",
    "job_id": "2408417d-fd4b-40ae-bec6-e09ce594eb5f"
}

Single node instance:

{ 
    "id": "520c58ba00a3497e97ce0b9604874dd6in02",
    "name": "test-singlenode",
    "datastore": {
        "type": "DDS-Community",
        "version": "3.4",
        "storage_engine": "wiredTiger"
    },
    "created": "2019-01-15 12:08:11",
    "status": "creating",
    "region": "aaa",
    "availability_zone": "bbb",
    "vpc_id": "674e9b42-cd8d-4d25-a2e6-5abcc565b961",
    "subnet_id": "f1df08c5-71d1-406a-aff0-de435a51007b",
    "security_group_id": "7aa51dbf-5b63-40db-9724-dad3c4828b58",
    "disk_encryption_id": "",
    "mode": "Single",
    "flavor": [
        {
            "type": "single",
            "num": 1,
            "spec_code": "dds.c3.medium.4.single",
            "size": 30
        }
    ],
    "backup_strategy": {
        "start_time": "23:00-00:00",
        "keep_days": "7"
    },
    "enterprise_project_id": "",
    "ssl_option":"1",
    "job_id": "46b65a13-3d52-4c58-a29b-4085d563dc9b"
}

Status Code

For more information, see Status Code.

Error Code

For more information, see Error Code.

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Creating a DB Instance

Function

Constraints

URI

Requests

Responses

Status Code

Error Code