Restoring Data to a New DB Instance

Function

This API is used to restore a DB instance using the backup.

Constraints

The database type of the destination DB instance must be the same as that of the source DB instance.

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 (_).
availability_zone	Yes	String	Specifies the AZ ID.
vpc_id	Yes	String	Indicates the VPC ID. The value cannot be empty. The string length and whether the string complying with UUID regular expression rules are verified.
subnet_id	Yes	String	Specifies the subnet ID.
security_group_id	Yes	String	Specifies the ID of the security group where a specified DB instance belongs to.
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.
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.
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 parameter value in Querying All DB Instance Specifications.
restore_point	Yes	Object	Specifies the details about the backup to be restored to a new DB instance. For more information, see Table 3.
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.
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.

**Table 3** restore_point field data structure description
Name	Mandatory	Type	Description
backup_id	Yes	String	Specifies the ID of the backup to be restored.

**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.
num	Yes	Integer	Specifies node quantity. Valid value: config: The value is 1. replica: The value is 1.
size	This parameter is optional for all nodes except mongos and invalid for mongos.	Integer	Specifies the disk size. The value must be a multiple of 10. The unit is GB. In a cluster instance, the shard size ranges from 10 GB to 2000 GB and must be greater than or equal to the disk size of the original instance. The config size can only be 20 GB. This parameter is invalid for mongos nodes. Therefore, you do not need to specify the storage space for mongos nodes.
spec_code	Yes	String	Specifies the resource specification code. For details about how to obtain the value, see the parameter value in Querying All DB Instance 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

Restore the backup of a cluster to a new DB instance.

{ 
  "name": "test-cluster-01", 
  "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_", 
  "restore_point": {
    "backup_id": "8f643d252d834a4c916b2db4322f99552734"
  },
  "flavor": [{ 
      "type": "mongos", 
      "num": 2, 
      "spec_code": "dds.c3.medium.4.mongos" 
    }, 
    { 
      "type": "shard", 
      "size": 40,
      "spec_code": "dds.c3.medium.4.shard" 
    }, 
    { 
      "type": "config", 
      "num": 1,
      "size": 20,
      "spec_code": "dds.c3.large.2.config" 
    } 
  ], 
  "backup_strategy": { 
    "start_time": "23:00-00:00", 
    "keep_days": "8" 
  } 
}

Restore the backup of a replica set instance:

{ 
  "name": "test-replicaset", 
  "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_", 
"restore_point": {
    "backup_id": "8f643d252d834a4c916b2db4322f99552734"
},
  "flavor": [ 
    { 
      "type": "replica", 
      "num": 1,
      "spec_code": "dds.s2.medium.4.shard" 
    } 
  ], 
  "backup_strategy": { 
    "start_time": "23:00-00:00", 
    "keep_days": "8" 
  } 
}

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 subnet ID, which is the same as the request parameter.
security_group_id	String	Indicates the ID of the security group to which the instance belongs, 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.
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": "", 
    "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": "", 
    "job_id": "2408417d-fd4b-40ae-bec6-e09ce594eb5f" 
}