Creating a DB Instance

Function

This API is used to create a single RDS DB instance, primary/standby DB instance, or read replica.

Before calling an API, you need to understand the API in Authentication.

URI

URI format
POST /v3/{project_id}/instances
Example
https://{Endpoint}/v3/0483b6b16e954cb88930a360d2c4e663/instances

Parameter description

**Table 1** Parameter description
Name	Mandatory	Description
project_id	Yes	Specifies the project ID of a tenant in a region. For details about how to obtain the project ID, see Obtaining a Project ID.

Request

**Table 2** Parameter description (creating single, primary/standby, and cluster instances)
Name	Mandatory	Type	Description
name	Yes	String	Specifies the DB instance name. Instances of the same type can have same names under the same tenant. The DB instance name must be 4 to 64 characters long, start with a letter, and contain only letters (case-sensitive), digits, hyphens (-), and underscores (_).
datastore	Yes	Object	Specifies the database information. For details, see Table 4.
ha	No	Object	Specifies the HA configuration, which is used when you create primary/standby instances. For details, see Table 5.
configuration_id	No	String	Specifies the parameter template ID. For details, see id in Table 3 in section Obtaining a Parameter Template List.
port	No	String	Specifies the database port information. The RDS for MySQL database port ranges from 1024 to 65535 (excluding 12017 and 33071, which are occupied by the RDS system and cannot be used). The RDS for PostgreSQL database port ranges from 2100 to 9500. If this parameter is not set, the default value is as follows: RDS for MySQL: 3306. RDS for PostgreSQL: 5432
password	No	String	Specifies the database password. Valid value: A database password must be 8 to 32 characters long and contain at least three types of the following characters: uppercase letters, lowercase letters, digits, and special characters. Different DB engines support different special characters. RDS for MySQL: ~!@#$%^-_=+?, RDS for PostgreSQL: ~!@#%^-_=+?, You are advised to enter a strong password to improve security, preventing security risks such as brute force cracking.
backup_strategy	No	Object	Specifies the advanced backup policy. For details, see Table 6.
flavor_ref	Yes	String	Specifies the specification code. The value cannot be empty. For details, see spec_code in Table 3 in section Querying Database Specifications.
volume	Yes	Object	Specifies the volume information. For details, see Table 7.
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. If the DB instance is not a single instance, you need to specify an AZ for each node of the instance and separate the AZs with commas (,). For details, see the example. 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 in the VPC details. Method 2: See the "Querying VPCs" section in the Virtual Private Cloud API Reference.
subnet_id	Yes	String	Specifies the network ID. 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: See the "Querying Subnets" section in the Virtual Private Cloud API Reference.
data_vip	No	String	Specifies the private IP address of a DB instance. You can use the following methods to obtain the private IP address: Method 1: Log in to the VPC console and click the target subnet on the Subnets page. View the subnet CIDR block and select an IP address that is not in use. Method 2: See the "Querying Subnets" section in the Virtual Private Cloud API Reference.
security_group_id	Yes	String	Specifies the security group which the RDS DB instance belongs to. To obtain this parameter value, use 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: See the "Querying Security Groups" section in the Virtual Private Cloud API Reference.
time_zone	No	String	Specifies the UTC time zone. If this parameter is not specified, the time zone of each engine is as follows: MySQL: uses UTC by default. PostgreSQL: uses UTC by default. If this parameter is specified for MySQL or PostgreSQL, the value range is from UTC-12:00 to UTC+12:00 on the hour. For example, the parameter can be UTC+08:00 rather than UTC+08:30.

**Table 3** Parameter description
Name	Mandatory	Type	Description
name	Yes	String	Specifies the DB instance name. The DB instance name of the same type must be unique for the same tenant. Valid value: For RDS for MySQL databases, the DB instance name must be 4 to 64 characters long, start with a letter, and contain only letters (case-sensitive), digits, hyphens (-), and underscores (_). For RDS for PostgreSQL databases, the DB instance name must be 4 to 64 characters long, start with a letter, and contain only letters (case-sensitive), digits, hyphens (-), and underscores (_).
flavor_ref	Yes	String	Specifies the specification code. The value cannot be empty. For details, see spec_code in Table 3 in section Querying Database Specifications.
volume	Yes	Object	Specifies the volume information. For details, see Table 7.
region	No	String	Specifies the region ID. Currently, read replicas can be created only in the same region as that of the primary DB instance. 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. The value cannot be empty. For details about how to obtain this parameter value, see Regions and Endpoints.

**Table 4** datastore field data structure description
Name	Mandatory	Type	Description
type	Yes	String	Specifies the DB engine. Value: MySQL PostgreSQL
version	Yes	String	Specifies the database version. MySQL databases support 5.6, 5.7, and 8.0. Example value: 5.7 PostgreSQL databases support 9.5, 9.6, 10, 11, 12, 13, and 14. Example value: 9.6 For details about supported database versions, see section Querying Version Information About a DB Engine.

**Table 5** ha field data structure description
Name	Mandatory	Type	Description
mode	Yes	String	Specifies the primary/standby instance type. The value is Ha (case-insensitive).
replication_mode	Yes	String	Specifies the replication mode for the standby DB instance. Value: For RDS for MySQL, the value is async or semisync. For RDS for PostgreSQL, the value is async or sync. NOTE: async indicates the asynchronous replication mode. semisync indicates the semi-synchronous replication mode. sync indicates the synchronous replication mode.

**Table 6** 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 any of the following: 00, 15, 30, or 45. Example value: 08:15-09:15 23:00-00:00
keep_days	No	Integer	Specifies the retention days for specific backup files. The value range is from 0 to 732. If this parameter is not specified or set to 0, the automated backup policy is disabled.

**Table 7** volume field data structure description
Name	Mandatory	Type	Description
type	Yes	String	Specifies the volume type. Its value can be any of the following and is case-sensitive: ULTRAHIGH: SSD storage (ultra-high I/O). CLOUDSSD: cloud SSD storage.
size	Yes	Integer	Specifies the volume size. Its value must be a multiple of 10 and the value range is from 40 GB to 4,000 GB. NOTE: For read replicas, this parameter is invalid. The volume size is the same as that of the primary DB instance by default.

The values of region and availability_zone are used as examples.

Request example

Creating a single DB instance:

{
	"name": "rds-instance-rep2",
	"datastore": {
		"type": "MySQL",
		"version": "5.6"
	},
	"flavor_ref": "rds.mysql.s1.large",
	"volume": {
		"type": "ULTRAHIGH",
		"size": 100
	},
	"region": "aaa",
	"availability_zone": "bbb",
	"vpc_id": "490a4a08-ef4b-44c5-94be-3051ef9e4fce",
	"subnet_id": "0e2eda62-1d42-4d64-a9d1-4e9aa9cd994f",
	"data_vip": "192.168.0.147",
	"security_group_id": "2a1f7fc8-3307-42a7-aa6f-42c8b9b8f8c5",
	"port": 8635,
	"backup_strategy": {
		"start_time": "08:15-09:15",
		"keep_days": 12
	},
	"charge_info": {
		"charge_mode": "postPaid"
	},
	"password": "Test@12345678",
	"configuration_id": "452408-ef4b-44c5-94be-305145fg"
}

Creating a primary/standby instance:

{
	"name": "rds-instance-rep2",
	"datastore": {
		"type": "MySQL",
		"version": "5.6"
	},
	"ha": {
		"mode": "ha",
		"replication_mode": "semisync"
	},
	"flavor_ref": "rds.mysql.s1.large.ha",
	"volume": {
		"type": "ULTRAHIGH",
		"size": 100
	},
	"region": "aaa",
	"availability_zone": "bbb,ccc",
	"vpc_id": "490a4a08-ef4b-44c5-94be-3051ef9e4fce",
	"subnet_id": "0e2eda62-1d42-4d64-a9d1-4e9aa9cd994f",
	"data_vip": "192.168.0.147",
	"security_group_id": "2a1f7fc8-3307-42a7-aa6f-42c8b9b8f8c5",
	"port": 8635,
	"backup_strategy": {
		"start_time": "08:15-09:15",
		"keep_days": 12
	},
	"charge_info": {
		"charge_mode": "postPaid"
	},
	"password": "Test@12345678",
	"configuration_id": "452408-ef4b-44c5-94be-305145fg"
_}

Creating a read replica:

{
	"name": "rds-instance-rep2",
	"replica_of_id": "afdsad-fds-fdsagin01",
	"flavor_ref": "rds.mysql.s1.large.rr",
	"volume": {
		"type": "ULTRAHIGH"
	},
	"region": "aaa",
	"availability_zone": "bbb"
}

Response

Normal response

**Table 8** Parameter description
Name	Type	Description
instance	Object	Indicates the DB instance information. For details, see Table 9.
job_id	String	Indicates the ID of the DB instance creation task.

**Table 9** instance field data structure description
Name	Type	Description
id	String	Indicates the DB instance ID. NOTE: The v3 DB instance ID is incompatible with the v1 DB instance ID.
name	String	Indicates the DB instance name. DB instances of the same type can have same names under the same tenant. Valid value: The DB instance name must be 4 to 64 characters long, start with a letter, and contain only letters (case-sensitive), digits, hyphens (-), and underscores (_).
status	String	Indicates the DB instance status. For example, BUILD indicates that the DB instance is being created.
datastore	Object	Indicates the database information. For details, see Table 10.
ha	Object	Indicates the HA configuration parameters. This parameter is returned only when primary/standby DB instances are created. For details, see Table 11.
configuration_id	String	Indicates the parameter template ID. This parameter is returned only when a custom parameter template is used during DB instance creation.
port	String	Indicates the database port, which is the same as the request parameter.
backup_strategy	Object	Indicates the automated backup policy. For details, see Table 12.
flavor_ref	String	Indicates the specification code. The value cannot be empty. For details, see spec_code in Table 3 in section Querying Database Specifications.
volume	Object	Indicates the volume information. For details, see Table 13.
region	String	Indicates the region ID.
availability_zone	String	Indicates the AZ ID.
vpc_id	String	Indicates 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 in the VPC details. Method 2: See the "Querying VPCs" section in the Virtual Private Cloud API Reference.
subnet_id	String	Indicates the network ID. 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: See the "Querying Subnets" section in the Virtual Private Cloud API Reference.
security_group_id	String	Indicates the security group which the RDS DB instance belongs to. To obtain this parameter value, use 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: See the "Querying Security Groups" section in the Virtual Private Cloud API Reference.
charge_info	Object	Indicates the billing information. For details, see Table 14.

**Table 10** datastore field data structure description
Name	Type	Description
type	String	Indicates the DB engine. Value: MySQL PostgreSQL
version	String	Indicates the database version. For details about supported database versions, see section Querying Version Information About a DB Engine.

**Table 11** ha field data structure description
Name	Type	Description
mode	String	Indicates the primary/standby instance type. The value is Ha.
replication_mode	String	Indicates the replication mode for the standby DB instance. This parameter is valid only when the instance is an HA instance. Value: For RDS for MySQL, the value is async or semisync. For RDS for PostgreSQL, the value is async or sync. NOTE: async indicates the asynchronous replication mode. semisync indicates the semi-synchronous replication mode. sync indicates the synchronous replication mode.

**Table 12** backupStrategy field data structure description
Name	Type	Description
start_time	String	Indicates 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 any of the following: 00, 15, 30, or 45. Example value: 08:15-09:15 23:00-00:00 If backup_strategy in the request body is empty, 02:00-03:00 is returned for start_time by default.
keep_days	Integer	Indicates the retention days for specific backup files. The value range is from 0 to 732. If this parameter is not specified or set to 0, the automated backup policy is disabled. If backup_strategy in the request body is empty, 7 is returned for keep_days by default.

**Table 13** volume field data structure description
Name	Type	Description
type	String	Indicates the volume type. Its value can be any of the following and is case-sensitive: ULTRAHIGH: SSD storage (ultra-high I/O). CLOUDSSD: cloud SSD storage.
size	Integer	Indicates the volume size. Its value range is from 40 GB to 4,000 GB. The value must be a multiple of 10.

**Table 14** chargeInfo field data structure description
Name	Type	Description
charge_mode	String	Indicates the billing information.

The values of region and availability_zone are used as examples.

Example normal response

Creating a single MySQL DB instance:

{
	"instance": {
		"id": "dsfae23fsfdsae3435in01",
		"name": "trove-instance-rep2",
		"datastore": {
			"type": "MySQL",
			"version": "5.6"
		},
		"flavor_ref": "rds.mysql.s1.large",
		"volume": {
			"type": "ULTRAHIGH",
			"size": 100
		},
                "region": "aaa",
		"availability_zone": "bbb",
		"vpc_id": "490a4a08-ef4b-44c5-94be-3051ef9e4fce",
		"subnet_id": "0e2eda62-1d42-4d64-a9d1-4e9aa9cd994f",
		"security_group_id": "2a1f7fc8-3307-42a7-aa6f-42c8b9b8f8c5",
		"port": "8635",
		"backup_strategy": {
			"start_time": "08:15-09:15",
			"keep_days": 3
		},
		"configuration_id": "452408-44c5-94be-305145fg",
		"charge_info": {
			"charge_mode": "postPaid"
		}
	},
	"job_id": "dff1d289-4d03-4942-8b9f-463ea07c000d"
}

Creating a primary/standby DB instance:

{
  "instance":{ 
           "id": "dsfae23fsfdsae3435in01",
           "name": "trove-instance-rep2", 
           "datastore": { 
             "type": "MySQL", 
             "version": "5.6" 
            }, 
           "ha": {
             "mode": "ha",
             "replication_mode": "semisync"
           },
           "flavor_ref": "rds.mysql.s1.large.ha",
           "volume": { 
               "type": "ULTRAHIGH", 
               "size": 100 
             },
           "region": "aaa",
           "availability_zone": "bbb,ccc",
           "vpc_id": "490a4a08-ef4b-44c5-94be-3051ef9e4fce", 
           "subnet_id": "0e2eda62-1d42-4d64-a9d1-4e9aa9cd994f",
           "security_group_id": "2a1f7fc8-3307-42a7-aa6f-42c8b9b8f8c5", 
           "port": "8635", 
           "backup_strategy": { 
             "start_time": "08:15-09:15", 
             "keep_days": 3 
            }, 
           "configuration_id": "452408-44c5-94be-305145fg",
           "charge_info": {
                   "charge_mode": "postPaid"
                               },
         },
  "job_id": "dff1d289-4d03-4942-8b9f-463ea07c000d" 
}

Creating a read replica:

{
  "instance":{ 
            "id": "dsfae23fsfdsae3435in01",
            "name": "trove-instance-rep2", 
            "flavor_ref": "rds.mysql.s1.large.rr",
             "volume": { 
               "type": "ULTRAHIGH", 
               "size": 100 
             },
           "region": "aaa",
           "availability_zone": "bbb",
           "vpc_id": "490a4a08-ef4b-44c5-94be-3051ef9e4fce", 
           "subnet_id": "0e2eda62-1d42-4d64-a9d1-4e9aa9cd994f",
           "security_group_id": "2a1f7fc8-3307-42a7-aa6f-42c8b9b8f8c5", 
           "port": "8635", 
           "configuration_id": "452408-44c5-94be-305145fg"
         },
 "job_id": "dff1d289-4d03-4942-8b9f-463ea07c000d"  
}