Creating an Instance

Function

This API is used to create an instance.

Pay-per-use and yearly/monthly billing modes are supported.

URI

POST /v2/{engine}/{project_id}/instances

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

engine

Yes

String

Message engine.

project_id

Yes

String

Project ID. For details about how to obtain it, see Obtaining a Project ID.

Request Parameters

Table 2 Request body parameters

Parameter

Mandatory

Type

Description

name

Yes

String

Instance name.

An instance name can contain 4 to 64 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed.

description

No

String

Description of an instance.

The description supports up to 1024 characters.

Note

The backslash () and quotation mark (") are special characters for JSON messages. When using these characters in a parameter value, add the escape character () before the characters, for example, \ and ".

engine

Yes

String

Message engine. Value: kafka.

engine_version

Yes

String

Version of the message engine. Options:

  • 1.1.0

  • 2.3.0

  • 2.7

  • 3.x

broker_num

Yes

Integer

Number of brokers.

storage_space

Yes

Integer

Message storage space in GB. Value range:

  • 300-300,000 GB for c6.2u4g.cluster Kafka instances

  • 300-600,000 GB for c6.4u8g.cluster Kafka instances

  • 300-1,500,000 GB for c6.8u16g.cluster Kafka instances

  • 300-1,500,000 GB for c6.12u24g.cluster Kafka instances

  • 300-1,500,000 GB for c6.16u32g.cluster Kafka instances

access_user

No

String

This parameter is mandatory when ssl_enable is set to true. This parameter is invalid when ssl_enable is set to false.

A username must start with a letter and only letters, digits, hyphens (-), and underscores (_) are allowed. It can contain 4 to 64 characters.

password

No

String

This parameter is mandatory when ssl_enable is set to true. This parameter is invalid when ssl_enable is set to false.

Instance password.

The password must meet the following complexity requirements:

  • Can contain 8 to 32 characters.

  • Must contain at least three of the following character types:

    • Lowercase letters

    • Uppercase letters

    • Digits

    • Special characters include `~!@#$ %^&*()-_=+|[{}]:'",<.>/? and spaces, and cannot start with a hyphen (-).

vpc_id

Yes

String

VPC ID.

To obtain it, log in to the VPC console and view the VPC ID on the VPC details page.

security_group_id

Yes

String

ID of the security group to which the instance belongs.

To obtain it, log in to the VPC console and view the security group ID on the security group details page.

subnet_id

Yes

String

Subnet information.

To obtain it, log in to VPC console and click the target subnet on the Subnets page. You can view the network ID on the displayed page.

available_zones

Yes

Array of strings

ID of the AZ where instance brokers reside and which has available resources. Obtain the AZ ID by referring to Listing AZ Information.

This parameter cannot be empty or null.

A Kafka instance can be deployed in 1 AZ or at least 3 AZs. When specifying AZs for brokers, use commas (,) to separate multiple AZs.

product_id

Yes

String

Product ID.

You can obtain a product ID from Querying Product Specifications List.

maintain_begin

No

String

Time at which the maintenance window starts. The format is HH:mm.

maintain_end

No

String

Time at which the maintenance window ends. The format is HH:mm.

enable_publicip

No

Boolean

Whether to enable public access. By default, public access is disabled.

  • true: enable

  • false: disable

publicip_id

No

String

ID of the EIP bound to the instance.

Use commas (,) to separate multiple EIP IDs.

This parameter is mandatory if public access is enabled (that is, enable_publicip is set to true).

ssl_enable

No

Boolean

Whether to enable SSL encryption for access.

This setting is fixed once the instance is created.

  • true: enable

  • false: disable

kafka_security_protocol

No

String

Security protocol to use after SASL is enabled. This parameter is mandatory if SASL authentication is enabled (ssl_enable=true).

If this parameter is left blank, SASL_SSL authentication is enabled by default.

This setting is fixed once the instance is created.

  • SASL_SSL: Data is encrypted with SSL certificates for high-security transmission.

  • SASL_PLAINTEXT: Data is transmitted in plaintext with username and password authentication. This protocol uses the SCRAM-SHA-512 mechanism and delivers high performance.

sasl_enabled_mechanisms

No

Array of strings

Authentication mechanism to use after SASL is enabled. This parameter is mandatory if SASL authentication is enabled (ssl_enable=true).

If this parameter is left blank, PLAIN authentication is enabled by default.

Select both or either of the following mechanisms for SASL authentication.

Options:

  • PLAIN: simple username and password verification.

  • SCRAM-SHA-512: user credential verification, which is more secure than PLAIN.

retention_policy

No

String

Action to be taken when the memory usage reaches the disk capacity threshold.

The value can be:

  • produce_reject: New messages cannot be created.

  • time_base: The earliest messages are deleted.

ipv6_enable

No

Boolean

Indicates whether to enable IPv6. This parameter is available only when the VPC supports IPv6.

disk_encrypted_enable

No

Boolean

Indicates whether to enable disk encryption.

disk_encrypted_key

No

String

Disk encryption key. If disk encryption is not enabled, this parameter is left blank.

connector_enable

No

Boolean

Whether to enable message dumping.

By default, message dumping is disabled.

enable_auto_topic

No

Boolean

Whether to enable automatic topic creation.

  • true: enable

  • false: disable

If it is enabled, a topic will be automatically created with 3 partitions and 3 replicas when a message is created in or retrieved from a topic that does not exist.

The default value is false.

storage_spec_code

Yes

String

Storage I/O specification.

Value range:

  • dms.physical.storage.high.v2: high I/O

  • dms.physical.storage.ultra.v2: ultra-high I/O

For details about how to select a disk type, see "Disk Types and Disk Performance" in the EVS User Guide.

enterprise_project_id

No

String

Enterprise project ID. This parameter is mandatory for an enterprise project account.

tags

No

Array of TagEntity objects

Tag list.

arch_type

No

String

CPU architecture. Currently supported: x86.

Value range:

  • X86

vpc_client_plain

No

Boolean

Intra-VPC plaintext access.

bss_param

No

BssParam object

Parameter related to the yearly/monthly billing mode.

If this parameter is left blank, the billing mode is pay-per-use by default. If this parameter is not left blank, the billing mode is yearly/monthly.

Table 3 TagEntity

Parameter

Mandatory

Type

Description

key

No

String

Tag key.

  • Must be specified.

  • Must be unique for the same instance.

  • Can contain 1 to 128 characters.

  • Can contain letters, digits, spaces, and special characters _.:=+-@

  • Cannot start or end with a space.

value

No

String

Tag value.

  • Can contain 0 to 255 characters.

  • Can contain letters, digits, spaces, and special characters _.:=+-@

  • Cannot start or end with a space.

Table 4 BssParam

Parameter

Mandatory

Type

Description

is_auto_renew

No

Boolean

Whether auto renewal is enabled.

Options:

  • true: Auto renewal is enabled.

  • false: Auto renewal is not enabled.

By default, auto renewal is disabled.

charging_mode

No

String

Billing mode.

This parameter specifies a payment mode.

Options:

  • prePaid: yearly/monthly billing.

  • postPaid: pay-per-use billing.

The default value is postPaid.

is_auto_pay

No

Boolean

Specifies whether the order is automatically or manually paid.

Options:

  • true: The order will be automatically paid.

  • false: The order must be manually paid.

The default payment mode is manual.

period_type

No

String

Subscription period type.

Options:

  • month

  • year:

This parameter is valid and mandatory only when chargingMode is set to prePaid. **

period_num

No

Integer

Subscribed periods.

Options:

  • If periodType is month, the value ranges from 1 to 9.

  • If periodType is year, the value ranges from 1 to 3.

**This parameter is valid and mandatory only when chargingMode is set to prePaid. **

Response Parameters

Status code: 200

Table 5 Response body parameters

Parameter

Type

Description

instance_id

String

Instance ID.

Example Requests

Creating a pay-per-use Kafka instance whose version is 2.7, specifications are 2 vCPUs | 4 GB x 3, and storage space is 300 GB

POST https://{endpoint}/v2/{engine}/{project_id}/instances

{
  "name" : "kafka-test",
  "description" : "",
  "engine" : "kafka",
  "engine_version" : "2.7,3.x",
  "storage_space" : 300,
  "vpc_id" : "********-9b4a-44c5-a964-************",
  "subnet_id" : "********-8fbf-4438-ba71-************",
  "security_group_id" : "********-e073-4aad-991f-************",
  "available_zones" : [ "********706d4c1fb0eb72f0********" ],
  "product_id" : "c6.2u4g.cluster",
  "ssl_enable" : true,
  "kafka_security_protocol" : "SASL_SSL",
  "sasl_enabled_mechanisms" : [ "SCRAM-SHA-512" ],
  "storage_spec_code" : "dms.physical.storage.ultra.v2",
  "broker_num" : 3,
  "arch_type" : "X86",
  "enterprise_project_id" : "0",
  "access_user" : "********",
  "password" : "********",
  "enable_publicip" : true,
  "tags" : [ {
    "key" : "aaa",
    "value" : "111"
  } ],
  "retention_policy" : "time_base",
  "disk_encrypted_enable" : true,
  "disk_encrypted_key" : "********-b953-4875-a743-************",
  "publicip_id" : "********-88fc-4a8c-86d0-************,********-16af-455d-8d54-************,********-3d69-4367-95ab-************",
  "vpc_client_plain" : true,
  "enable_auto_topic" : true
}

Example Responses

Status code: 200

Instance created successfully.

{
  "instance_id" : "8959ab1c-7n1a-yyb1-a05t-93dfc361b32d"
}

Status Codes

Status Code

Description

200

Instance created successfully.

Error Codes

See Error Codes.

last updated: 2025-10-15 15:17 UTC - commit: 55087275b7c7f8fc646336572f9b7d5e31807453