DescribeBackupPolicy - Database Backup - Alibaba Cloud Documentation Center

Queries the information about the backup policy of a PolarDB for MySQL instance.

Operation description

Supported database engine

PolarDB for MySQL

Note The API operation is available only to specific customers. If you want to call this API operation, request permissions by joining the Database Backup (DBS) DingTalk group (ID 35585947) for customer consultation.

References

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
dbs:DescribeBackupPolicy	get	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
RegionCode	string	No	The region in which the backup set resides.	cn-beijing
InstanceName	string	No	The ID of the PolarDB for MySQL cluster.	pc-2ze3nrr64c5******

Response parameters

Parameter	Type	Description	Example
	object	The response parameters.
RequestId	string	The request ID.	54A63B3B-AA10-1CC3-A6BB-6CCE98D19628
Message	string	The returned message.	instanceName can not be empty.
Data	object	The details of the backup policy.
PreferredBackupDate	string	The backup cycle of a basic backup. The backup cycle is represented by a seven-digit string, which corresponds to the days of the week from Monday to Sunday. A value of 1 indicates that a basic backup is performed on that day, and a value of 0 indicates that no basic backup is performed on that day.	1010101
PreferredBackupWindowBegin	string	The start time of a basic backup.	23:00Z
PreferredBackupWindow	string	The time period during which a basic backup is performed.	23:00Z-24:00Z
BackupRetentionPeriod	integer	The retention period of basic backup files. If an advanced backup policy is enabled, the value indicates the retention period of the level-1 backup policy.	7
BackupRetentionPolicyOnClusterDeletion	string	The policy that is used to retain the archived backup files if the instance is deleted. Valid values: NONE: No archived backup file is retained. LATEST: Only the latest archived backup file is retained. ALL: All archived backup files are retained.	LATEST
HighFrequencyBakInterval	integer	The interval for high-frequency backups. Unit: minutes. For example, a value of 120 indicates that a backup is performed every two hours.	120
BackupPriority	integer	Indicates whether the secondary database is preferentially backed up. Valid values: 1: The secondary database is preferentially backed up. 2: Only the primary database is backed up. Note This parameter is returned only for ApsaraDB RDS for SQL Server instances. If the instance runs a different database engine, 0 is returned.	0
EnableLogBackup	integer	Indicates whether the log backup feature is enabled. Valid values: 1: The log backup feature is enabled. 0: The log backup feature is disabled.	1
LogBackupRetention	integer	The retention period of log backups.	7
LogBackupLocalRetentionNumber	string	The number of local binary log files that are retained.	10
EnableBackup	integer	Indicates whether the backup feature is enabled.	1
LocalLogRetentionSpace	integer	The maximum storage usage that is allowed for log files on the instance.	30
HighSpaceUsageProtection	string	Indicates whether logs are forcibly cleared if the storage usage of the instance is greater than 80% or the available storage space of the instance is smaller than 5 GB. Valid values: Disable: Logs are not forcibly cleared. Enable: Logs are forcibly cleared.	Enable
Category	string	Indicates whether the second-granularity backup feature is enabled. Valid values: Flash: The second-granularity backup feature is enabled. Standard: The standard backup feature is enabled. Note This parameter is returned only for MySQL instances.	Standard
IncBackupInterval	integer	The interval for high-frequency incremental backups.	-1
EnableIncBackup	integer	Indicates whether the incremental backup feature is enabled.	0
BackupMethod	string	The method that is used to generate backup files. Valid values: Physical: physical backup Snapshot: snapshot backup	Physical
AdvanceLogPolicies	array<object>	The details of log backup policies.
	object
PolicyId	string	The backup policy ID.	6s67c7i3y8f8p72808p******
SrcType	string	The type of the data source of the backup policy. Valid values: db: database level1: level-1 backup level2: level-2 backup level2Cross: level-2 cross-region backup	level1
SrcRegion	string	The region in which the data source of the backup policy resides.	cn-beijing
DestType	string	The storage method of backup files. Valid values: db: database level1: level-1 backup level2: level-2 backup level2Cross: level-2 cross-region backup	level1
DestRegion	string	The region in which the backup files are stored.	cn-shanghai
EnableLogBackup	boolean	A reserved parameter.	1
LogRetentionType	string	The retention type of log backups. Valid values: never: Log backups never expire. delay: Log backups are retained for a specific number of days.	delay
LogRetentionValue	string	The retention period of log backups.	3
AdvanceDataPolicies	array<object>	The details of data backup policies.
	object
PolicyId	string	The ID of the advanced backup policy.	71930ac2e9f15e41615e10627c******
FilterType	string	The scheduling mode of the advanced backup policy. Valid values: crontab: periodic scheduling event: event-based scheduling	crontab
FilterKey	string	The scheduling frequency. Valid values: dayOfWeek: scheduling by week dayOfMonth: scheduling by month dayOfYear: scheduling by year backupInterval: scheduling at a specific interval Note This parameter is returned only if the value of FilterType is crontab.	dayOfWeek
FilterValue	string	The day of a week on which you want to back up data.	1,2,3,4,5,6,7
DumpAction	string	The information about the dump policy. Valid values: copy: The backup data is copied from the data source to the destination. move: The backup data is moved from the data source to the destination.	copy
RetentionType	string	The retention type of backup sets. Valid values: never: Backup sets never expire. delay: Backup sets are retained for a specific number of days.	delay
RetentionValue	string	The validity period, in days.	7
SrcType	string	The type of the data source of the backup policy. Valid values: db: database level1: level-1 backup level2: level-2 backup level2Cross: level-2 cross-region backup	db
SrcRegion	string	The region in which the data source of the backup policy resides.	cn-beijing
DestType	string	The storage method of backup files. Valid values: db: database level1: level-1 backup level2: level-2 backup level2Cross: level-2 cross-region backup	level1
DestRegion	string	The region in which the backup files are stored.	cn-beijing
BakType	string	The backup type. Valid values: F: full backup L: log backup	F
AutoCreated	boolean	Indicates whether the backup policy is generated by the system. Valid values: true: The backup policy is generated by the system. false: The backup policy is a custom one.	true
ErrMessage	string	The error message.	The specified parameter %s value is not valid.
Code	string	The status code.	Success
Success	string	Indicates whether the request was successful. Valid values: true false	true
ErrCode	string	The error code.	Success

Examples

Sample success responses

JSONformat

{
  "RequestId": "54A63B3B-AA10-1CC3-A6BB-6CCE98D19628",
  "Message": "instanceName can not be empty.",
  "Data": {
    "PreferredBackupDate": "1010101",
    "PreferredBackupWindowBegin": "23:00Z",
    "PreferredBackupWindow": "23:00Z-24:00Z",
    "BackupRetentionPeriod": 7,
    "BackupRetentionPolicyOnClusterDeletion": "LATEST",
    "HighFrequencyBakInterval": 120,
    "BackupPriority": 0,
    "EnableLogBackup": 1,
    "LogBackupRetention": 7,
    "LogBackupLocalRetentionNumber": "10",
    "EnableBackup": 1,
    "LocalLogRetentionSpace": 30,
    "HighSpaceUsageProtection": "Enable",
    "Category": "Standard",
    "IncBackupInterval": -1,
    "EnableIncBackup": 0,
    "BackupMethod": "Physical",
    "AdvanceLogPolicies": [
      {
        "PolicyId": "6s67c7i3y8f8p72808p******",
        "SrcType": "level1",
        "SrcRegion": "cn-beijing",
        "DestType": "level1",
        "DestRegion": "cn-shanghai",
        "EnableLogBackup": true,
        "LogRetentionType": "delay",
        "LogRetentionValue": "3"
      }
    ],
    "AdvanceDataPolicies": [
      {
        "PolicyId": "71930ac2e9f15e41615e10627c******",
        "FilterType": "crontab",
        "FilterKey": "dayOfWeek",
        "FilterValue": "1,2,3,4,5,6,7",
        "DumpAction": "copy",
        "RetentionType": "delay",
        "RetentionValue": "7",
        "SrcType": "db",
        "SrcRegion": "cn-beijing",
        "DestType": "level1",
        "DestRegion": "cn-beijing",
        "BakType": "F",
        "AutoCreated": true
      }
    ]
  },
  "ErrMessage": "The specified parameter %s value is not valid.     ",
  "Code": "Success",
  "Success": "true",
  "ErrCode": "Success"
}

Error codes

HTTP status code	Error code	Error message
403	Request.Forbidden	Have no Permissions

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation
2024-05-28	The response structure of the API has changed	View Change Details
2024-05-17	The response structure of the API has changed	View Change Details