Creating a DB Instance

Function

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

Before calling an API, you need to understand the API in Authentication.
Before calling this API, obtain the required region and endpoint.

URI

URI format
POST https://{Endpoint}/v3/{project_id}/instances
Example
https://rds.cn-north-1.myhuaweicloud.com/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 distributed DB instances)
Name	Mandatory	Type	Description
name	Yes	String	Specifies the DB instance name. DB instances of the same type can have same names under the same tenant. The value must be 4 to 64 characters in length and start with a letter. It is case-sensitive and can contain only letters, digits, hyphens (-), and underscores (_).
datastore	Yes	Object	Specifies the database information. For details, see Table 4.
ha	No	Object	Specifies the HA configuration parameters, which are used when creating primary/standby DB 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 MySQL database port ranges from 1024 to 65535 (excluding 12017 and 33071, which are occupied by the RDS system and cannot be used). The PostgreSQL database port ranges from 2100 to 9500. If this parameter is not set, the default value is as follows: For MySQL, the default value is 3306. For PostgreSQL, the default value is 5432.
password	No	String	Specifies the database password. Valid value: The value contains 8 to 32 characters, including uppercase letters, lowercase letters, digits, and the following special characters: ~!@#%^*-_=+? 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 floating IP address of a DB instance. 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 subnet CIDR block on the displayed page. 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.
charge_info	No	Object	Specifies the billing information. For details, see Table 8.
time_zone	No	String	Specifies the UTC time zone. If this parameter is not specified, the time zone of each engine is as follows: RDS for MySQL uses UTC by default. RDS for PostgreSQL uses UTC by default. For MySQL or PostgreSQL, if this parameter is specified, the value ranges from UTC-12:00 to UTC+12:00 at the full 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. The value must be 4 to 64 characters in length and start with a letter. It is case-sensitive and can contain only letters, digits, hyphens (-), and underscores (_).
replica_of_id	Yes	String	Specifies the primary DB instance ID for creating a read replica. For details, see id in Table 4 in section Querying Details About DB Instances.
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.
charge_info	No	Object	Specifies the billing information. For details, see Table 8.

**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 PostgreSQL 1.0 (Enhanced Edition), 9.5, 9.6, 10, 11, and 12. 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 DB instance type. The value is Ha (primary/standby DB instances) and is case-insensitive.
replication_mode	Yes	String	Specifies the replication mode for the standby DB instance. Value: For MySQL, the value is async or semisync. 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. To extend the retention period, contact customer service. Automated backups can be retained for up to 2562 days.

**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: COMMON: indicates the SATA type. ULTRAHIGH: indicates the SSD type.
size	Yes	Integer	Specifies the volume size. Its value must be a multiple of 10 and the value range is from 40 GB to 4000 GB. NOTE: For read replicas, this parameter is invalid. The volume size is the same as that of the primary DB instance by default.

**Table 8** chargeInfo field data structure description
Name	Mandatory	Type	Description
charge_mode	Yes	String	Specifies the billing mode. Value: postPaid

**Table 9** Mapping between time zones and UTC offsets
Time Zone	Standard Time Offset	Remarks
Afghanistan Standard Time	UTC+04:30	Kabul
Alaskan Standard Time	UTC-09:00	Alaska
Arabian Standard Time	UTC+04:00	Abu Dhabi, Muscat
Atlantic Standard Time	UTC-04:00	Atlantic Time (Canada)
AUS Central Standard Time	UTC+09:30	Darwin
AUS Eastern Standard Time	UTC+10:00	Canberra, Melbourne, Sydney
Belarus Standard Time	UTC+03:00	Minsk
Canada Central Standard Time	UTC-06:00	Saskatchewan
Cape Verde Standard Time	UTC-01:00	Cape Verde Is.
Cen. Australia Standard Time	UTC+09:30	Adelaide
Central America Standard Time	UTC-06:00	Central America
Central Asia Standard Time	UTC+06:00	Astana
Central Brazilian Standard Time	UTC-04:00	Cuiaba
Central Europe Standard Time	UTC+01:00	Belgrade, Bratislava, Budapest, Ljubljana, Prague
Central European Standard Time	UTC+01:00	Sarajevo, Skopje, Warsaw, Zagreb
Central Pacific Standard Time	UTC+11:00	Solomon Islands, New Caledonia
Central Standard Time	UTC-06:00	Central Time (US and Canada)
China Standard Time	UTC+08:00	Beijing, Chongqing, Hong Kong, and Urumqi
E. Africa Standard Time	UTC+03:00	Nairobi
E. Australia Standard Time	UTC+10:00	Brisbane
E. Europe Standard Time	UTC+02:00	Chisinau
E. South America Standard Time	UTC-03:00	Brasilia
Eastern Standard Time	UTC-05:00	Eastern Time (US and Canada)
Georgian Standard Time	UTC+04:00	Tbilisi
GMT Standard Time	UTC	Dublin, Edinburgh, Lisbon, London
Greenland Standard Time	UTC–03:00	Greenland
Greenwich Standard Time	UTC	Monrovia, Reykjavik
GTB Standard Time	UTC+02:00	Athens, Bucharest
Hawaiian Standard Time	UTC-10:00	Hawaii
India Standard Time	UTC+05:30	Chennai, Kolkata, Mumbai, New Delhi
Jordan Standard Time	UTC+02:00	Amman
Korea Standard Time	UTC+09:00	Seoul
Middle East Standard Time	UTC+02:00	Beirut
Mountain Standard Time	UTC-07:00	Mountain Time (US and Canada)
US Mountain Standard Time	UTC-07:00	Arizona
New Zealand Standard Time	UTC+12:00	Auckland, Wellington
Newfoundland Standard Time	UTC-03:30	Newfoundland
Pacific SA Standard Time	UTC-03:00	Santiago
Pacific Standard Time	UTC-08:00	Pacific Time (US and Canada)
Russian Standard Time	UTC+03:00	Moscow, St. Petersburg, Volgograd
SA Pacific Standard Time	UTC-05:00	Bogota, Lima, Quito, Rio Branco
SE Asia Standard Time	UTC+07:00	Bangkok, Hanoi, Jakarta
China Standard Time	UTC+08:00	Kuala Lumpur, Singapore
Tokyo Standard Time	UTC+09:00	Osaka, Sapporo, Tokyo
US Eastern Standard Time	UTC-05:00	Indiana (East)
UTC	UTC	Coordinated Universal Time
UTC-02	UTC-02:00	Coordinated Universal Time–02
UTC-08	UTC-08:00	Coordinated Universal Time–08
UTC-09	UTC-09:00	Coordinated Universal Time–09
UTC-11	UTC-11:00	Coordinated Universal Time–11
UTC+12	UTC+12:00	Coordinated Universal Time+12
W. Australia Standard Time	UTC+08:00	Perth
W. Central Africa Standard Time	UTC+01:00	West Central Africa
W. Europe Standard Time	UTC+01:00	Berlin, Bern, Rome, Stockholm, Vienna

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 primary/standby DB instances:

{
	"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",
		"size": 100
	},

	"region": "aaa",
	"availability_zone": "bbb"











}

Response

Normal response

**Table 10** Parameter description
Name	Type	Description
instance	Object	Indicates the DB instance information. For details, see Table 11.
job_id	String	Indicates the ID of the DB instance creation task.

**Table 11** 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. Indicates the DB instance name. DB instances of the same type can have same names under the same tenant. The value must be 4 to 64 characters in length and start with a letter. It is case-insensitive and can contain only letters, 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 12.
ha	Object	Indicates the HA configuration parameters. This parameter is returned only when primary/standby DB instances are created. For details, see Table 13.
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 14.
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 15.
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 16.

**Table 12** 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 13** ha field data structure description
Name	Type	Description
mode	String	Indicates the DB instance type. The value is Ha (primary/standby DB instances).
replication_mode	String	Indicates the replication mode for the standby DB instance. This parameter is valid when the mode is Ha. Value: For MySQL, the value is async or semisync. 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 14** backupStrategy field data structure description
Name	Type	Description
start_time	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 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. To extend the retention period, contact customer service. Automated backups can be retained for up to 2562 days. If backup_strategy in the request body is empty, 7 is returned for keep_days by default.

**Table 15** 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: indicates the SSD type.
size	Integer	Indicates the volume size. Its value range is from 40 GB to 4000 GB. The value must be a multiple of 10.

**Table 16** chargeInfo field data structure description
Name	Type	Description
charge_mode	String	Indicates the billing information.

Example normal response

Creating a single 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 primary/standby DB instances:

{
  "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"  

}