# Restoring Data to a New DB Instance

#### Function

This API is used to restore data to a new DB instance (v3).

- Learn how to authorize and authenticate this API before using it.
- Before calling this API, obtain the required region and endpoint.

#### Constraints

- The DB engine of the original DB instance must be the same as that of the target DB instance. For example, if the original DB instance is running MySQL, the target DB instance must also run MySQL.
- All DB engine versions of the original and new DB instances must be consistent.
- The total volume size of the new DB instance must be greater than or equal to that of the original DB instance.
- Currently, Microsoft SQL Server does not support restoring data to a new DB instance.

#### URI

- URI format

  POST https://{Endpoint}/v3/{project_id}/instances

- Example

  https://rds.eu-de.otc.t-systems.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

- 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 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-insensitive and can contain only letters, digits, hyphens (-), and underscores (_).
  ha | No | Object | Specifies the HA configuration parameters, which are used when creating primary/standby DB instances. For details, see Table 3.
  configuration_id | No | String | Specifies the parameter template ID.

  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.
  - The Microsoft SQL Server database port is 1433 or ranges from 2100 to 9500 (excluding 5355 and 5985).

  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.
  - For Microsoft SQL Server, the default value is 1433.

  password | Yes | String | Specifies the database password. Valid value: The value cannot be empty and should contain 8 to 32 characters, including uppercase and 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 4.
  disk_encryption_id | No | String | Specifies the key ID for disk encryption. The default value is empty.
  flavor_ref | Yes | String | Specifies the specification code. The value cannot be empty. For details, see spec_code in section Querying Database Specifications.
  volume | Yes | Object | Specifies the volume information. For details, see Table 5.
  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 under "APIs" or the "Querying Networks" section under "OpenStack Neutron APIs" in Virtual Private Cloud API Reference.

  security_group_id

  No

  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.

  restore_point | Yes | Object | Specifies the restoration information. For details, see Table 6.

  Table 3 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.

  The value cannot be empty.
  - For MySQL, the value is async or semisync.
  - For PostgreSQL, the value is async or sync.
  - For Microsoft SQL Server, the value is sync.
  NOTE:
  - async indicates the asynchronous replication mode.
  - semisync indicates the semi-synchronous replication mode.
  - sync indicates the synchronous replication mode.

  Table 4 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 5 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 range is from 40 GB to 4000 GB. The value must be a multiple of 10. NOTICE: The volume size of the new DB instance must be greater than or equal to that of the original DB instance.

  Table 6 restore_point field data structure description
  Name | Mandatory | Type | Description
  --- | --- | --- | ---
  instance_id | Yes | String | Specifies the DB instance ID.

  type

  Yes

  String

  Specifies the restoration mode. Enumerated values include:
  - backup: indicates restoration from backup files. In this mode, backup_id is mandatory when type is not mandatory.
  - timestamp: indicates point-in-time restoration. In this mode, restore_time is mandatory when type is mandatory.

  backup_id | No | String | Specifies the ID of the backup used to restore data. This parameter must be specified when the backup file is used for restoration. NOTICE: When type is not mandatory, backup_id is mandatory.
  restore_time | No | Integer | Specifies the time point of data restoration in the UNIX timestamp. The unit is millisecond and the time zone is UTC. NOTICE: When type is mandatory, restore_time is mandatory.

- Request example

  Use backup files for restoration:

      {
      	"name": "targetInst",
      	"availability_zone": "eu-de-01,eu-de-02",
      	"ha": {
      		"mode": "ha",
      		"replication_mode": "async"
      	},
      	"flavor_ref": "rds.mysql.s1.large",
      	"volume": {
      		"type": "ULTRAHIGH",
      		"size": 40
      	},
      	"disk_encryption_id": "2gfdsh-844a-4023-a776-fc5c5fb71fb4",
      	"vpc_id": "490a4a08-ef4b-44c5-94be-3051ef9e4fce",
      	"subnet_id": "0e2eda62-1d42-4d64-a9d1-4e9aa9cd994f",
      	"security_group_id": "2a1f7fc8-3307-42a7-aa6f-42c8b9b8f8c5",
      	"backup_strategy": {
      		"keep_days": 2,
      		"start_time": "19:00-20:00"
      	},
      	"password": "Demo@12345678",
      	"configuration_id": "52e86e87445847a79bf807ceda213165pr01",
      	"restore_point": {
      		"instance_id": "d8e6ca5a624745bcb546a227aa3ae1cfin01",
      		"type": "backup",
      		"backup_id": "2f4ddb93-b901-4b08-93d8-1d2e472f30fe"
      	}
      }

  Use PITR for restoration:

      {
      	"name": "targetInst",
      	"availability_zone": "eu-de-01,eu-de-02",
      	"ha": {
      		"mode": "ha",
      		"replication_mode": "async"
      	},
      	"flavor_ref": "rds.mysql.s1.large",
      	"volume": {
      		"type": "ULTRAHIGH",
      		"size": 40
      	},
      	"disk_encryption_id": "2gfdsh-844a-4023-a776-fc5c5fb71fb4",
      	"vpc_id": "490a4a08-ef4b-44c5-94be-3051ef9e4fce",
      	"subnet_id": "0e2eda62-1d42-4d64-a9d1-4e9aa9cd994f",
      	"security_group_id": "2a1f7fc8-3307-42a7-aa6f-42c8b9b8f8c5",
      	"backup_strategy": {
      		"keep_days": 2,
      		"start_time": "19:00-20:00"
      	},
      	"password": "Demo@12345678",
      	"configuration_id": "52e86e87445847a79bf807ceda213165pr01",
      	"restore_point": {
      		"instance_id": "d8e6ca5a624745bcb546a227aa3ae1cfin01",
      		"type": "timestamp",
      		"restore_time": 1532001446987
      	}
      }

#### Response

- Normal response

  Table 7 Parameter description
  Name | Type | Description
  --- | --- | ---
  instance | Object | Indicates the DB instance information. For details, see Table 8.
  job_id | String | Indicates the ID of the DB instance creation task.

  Table 8 instance description
  Name | Type | Description
  --- | --- | ---
  id | String | Indicates the DB instance ID.
  name | String | Indicates 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-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 9.
  ha | Object | Indicates the HA configuration parameters. This parameter is returned only when primary/standby DB instances are created. For details, see Table 10.
  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 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.
  - The Microsoft SQL Server database port is 1433 or ranges from 2100 to 9500 (excluding 5355 and 5985).

  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.
  - For Microsoft SQL Server, the default value is 1433.

  backup_strategy | Object | Indicates the automated backup policy. For details, see Table 11.
  flavor_ref | String | Indicates the specification ID. For details, see spec_code in Table 3 in section Querying Database Specifications.
  volume | Object | Indicates the volume information. For details, see Table 12.
  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 under "APIs" or the "Querying Networks" section under "OpenStack Neutron APIs" in 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.

  Table 9 datastore field data structure description
  Name | Mandatory | Type | Description
  --- | --- | --- | ---

  type

  Yes

  String

  Indicates the DB engine. Its value can be any of the following and is case-insensitive:
  - MySQL
  - PostgreSQL
  - SQLServer

  version | Yes | String | Indicates the database version. For details about supported database versions, see section Database Version Queries.

  Table 10 ha field data structure description
  Name | Mandatory | Type | Description
  --- | --- | --- | ---
  mode | Yes | String | Indicates the DB instance type. The value is Ha (primary/standby DB instances).

  replication_mode

  Yes

  String

  Indicates the replication mode for the standby DB instance.

  The value cannot be empty.
  - For MySQL, the value is async or semisync.
  - For PostgreSQL, the value is async or sync.
  - For Microsoft SQL Server, the value is sync.
  NOTE:
  - async indicates the asynchronous replication mode.
  - semisync indicates the semi-synchronous replication mode.
  - sync indicates the synchronous replication mode.

  Table 11 backupStrategy field data structure description
  Name | Mandatory | Type | Description
  --- | --- | --- | ---

  start_time

  Yes

  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

  keep_days | No | 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.

  Table 12 volume field data structure description
  Name | Mandatory | Type | Description
  --- | --- | --- | ---

  type

  Yes

  String

  Indicates 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 | Indicates the volume size. Its value range is from 40 GB to 4000 GB. The value must be a multiple of 10.

- Example normal response

      {
      	"instance": {
      		"id": "f5ffdd8b1c98434385eb001904209eacin01",
      		"name": "demoname",
      		"status": "BUILD",
      		"datastore": {
      			"type": "MySQL",
      			"version": "5.6.41"
      		},
      		"port": "3306",
      		"volume": {
      			"type": "ULTRAHIGH",
      			"size": "40"
      		},
      		"region": "eu-de",
      		"backup_strategy": {
      			"start_time": "02:00-03:00",
      			"keep_days": "7"
      		},
      		"flavor_ref": "rds.mysql.s1.large",
      		"availability_zone": "eu-de-01",
      		"vpc_id": "19e5d45d-70fd-4a91-87e9-b27e71c9891f",
      		"subnet_id": "bd51fb45-2dcb-4296-8783-8623bfe89bb7",
      		"security_group_id": "23fd0cd4-15dc-4d65-bdb3-8844cc291be0"
      	},
      	"job_id": "bf003379-afea-4aa5-aa83-4543542070bc"
      }

- Abnormal Response

  For details, see Abnormal Request Results.

#### Status Code

For details, see Status Codes.

#### Error Code

For details, see Error Codes.

Parent topic: Backup and Restoration