Database Backup:Back up a Redis database by using logical backup

Features

Prerequisites

A Redis standard database of Redis 4.0 that uses the master-replica architecture is created.

Create a backup schedule

For more information, see Create a backup schedule.

Configure a backup schedule

In this example, a backup schedule for an ApsaraDB for Redis instance is used.

1. Log on to the Database Backup (DBS) console.

2. In the left-side navigation pane, click Backup Schedules. In the top navigation bar, select a region.

3. On the Backup Schedules page, find the ID of the backup schedule that you want to configure and click Configure Backup Schedule in the Actions column.

   

4. In the Configure Backup Source and Destination step of the Configure Backup Schedule wizard, configure the backup source and destination, and click Next in the lower-right corner of the page.

   

   Section	Parameter	Description
   N/A	Schedule Name	The name of the backup schedule. DBS automatically generates a backup schedule name. We recommend that you enter a descriptive name that is easy to identify. Backup schedule names do not need to be unique.
   Backup Source Information	Backup Mode	The method that is used to back up data. By default, the backup method that you selected when you purchased the backup schedule is used. In this example, Logical Backup is used.
   	Database Location	The location of the source database that you want to back up. Valid values: ApsaraDB for Redis: backs up an ApsaraDB for Redis instance. You must also specify the Redis Instance ID parameter. ECS-Hosted Database: backs up a database that is hosted on an Elastic Compute Service (ECS) instance. You must also specify the ECS Instance ID and Port Number parameters. User-Created Database with Public IP Address <IP Address:Port Number>: backs up a self-managed database by using its public IP address. You must also specify the Address and Port Number parameters. Express Connect DB/VPN Gateway/Intelligent Gateway: backs up a self-managed database by using a virtual private cloud (VPC). Before you configure the Peer VPC parameter, you must configure a VPC for the database. For more information, see topics such as Back up a self-managed database in a data center connected to Alibaba Cloud over Express Connect to OSS or DBS and Back up a user-created database in an on-premises data center connected to Alibaba Cloud through VPN Gateway or Smart Access Gateway to OSS or DBS. No public network IP: Port's self-built database (accessed through the database gateway): backs up a self-managed database by using a database gateway. Before you configure the Gateway instance ID parameter, you must configure a database gateway for the database. For more information, see Use Database Gateway to back up on-premises databases or private databases on a third-party cloud to Alibaba Cloud.
   	Instance Region	The region in which the source database instance resides. Note The region in which the source database resides. This parameter is displayed only if you select ECS-Hosted Database, ApsaraDB for Redis, or No public network IP: Port's self-built database (accessed through the database gateway).
   	Database Type	The type of the source database. Default value: Redis.
   	Address	The endpoint that is used to connect to the instance that you want to back up. Note If network security settings, such as firewall settings, are specified on the server where the instance is deployed, click Set Whitelist to obtain the CIDR blocks of DBS, and then add the CIDR blocks to the whitelist of the server. This allows DBS to access the server. This parameter is displayed only if you set the Database Location parameter to No public network IP: Port's self-built database (accessed through the database gateway), Express Connect DB/VPN Gateway/Intelligent Gateway, or User-Created Database with Public IP Address <IP Address:Port Number>.
   	Port Number	The port number that is used to connect to the source database. Default value: 6369.
   	Password	The password of the database account that is used to log on to the source database. The password format varies based on the selected account. If you use the default account, enter only the password. The username of the default account is default. Alternatively, you can use the account whose username is the instance ID, such as r-bp10noxlhcoim2****. If you use a custom account, enter a password in the format of <username>:<password>. A password in this format can also be used for the default account. For example, if the username of the custom account is testaccount and the password is Rp829dlwa, you must enter testaccount:Rp829dlwa as the database password. After you enter the username and password of the database account, click Test Connection next to the password to check whether the information about the database that you want to back up is valid. If the specified parameters are valid, the Test Passed message is displayed. If the Test Failed message is displayed, click Check next to Test Failed. Modify the information about the database that you want to back up based on the check results.
   	Compliance warranty regarding cross-border data transfers	Read and agree to the compliance commitment by selecting the check box.
   Backup Destination Information	Backup Storage Type	The type of storage that is used to store the backup data. Valid values: DBS Storage (recommended): Backup data is stored in DBS without the need to create an Object Storage Service (OSS) bucket. You are charged based on the volume of your data that is stored in DBS. For more information about the billing method, see Storage fees. OSS For User: You must create a bucket in the OSS console in advance. For more information, see Create buckets. Note In this example, DBS Storage (recommended) is selected. If you select OSS For User, you must configure the OSS Bucket Name parameter. Only the Standard storage class is supported. If the volume of data to be backed up is large, we recommend that you purchase subscription storage plans to offset fees. For more information, see Use storage plans. Storage plans are more cost-efficient than the pay-as-you-go billing method.
   	Storage Encryption	The method that is used to encrypt the backup data. Valid values: Encrypted: recommended. DBS uses AES-256 to encrypt data. The server-side encryption feature is used in OSS. When you upload an object to OSS, OSS encrypts and stores the object. When you download the encrypted object from OSS, OSS decrypts the object and returns the decrypted object to you. For more information, see Server-side encryption. Non-encrypted: The backup data is not encrypted.

5. In the Edit Backup Objects step, find the database or table that you want to back up in the Available section. Click the rightwards arrow to add the selected database or table to the Selected section. Then, click Next.

   Note

   • DBS allows you to back up a single table, a single database, or multiple databases. You can click Select All in the lower-left corner of the Available section to select all databases. The supported backup objects vary based on the database types. For more information, see Database engines and features.

   • By default, a backup schedule cannot be used to back up a database that is created after the backup schedule is created. To back up the database, you can add the database to the backup schedule on the Configure Task page of the backup schedule. For more information, see Modify backup objects.

6. In the Configure Backup Time step, configure the parameters that are described in the following table. Then, click Next in the lower-right corner of the page.

   Parameter	Description
   Full-scale Backup Frequency	The frequency of the backup schedule. Valid values: Periodic Backup and Single Backup. Note If you select Periodic Backup, you must configure the Full Data Backup Recurrence and Start At parameters.
   Full Data Backup Recurrence	The days of the week on which DBS runs the backup schedule. You can select one or more days of a week. Select at least one day of the week.
   Start At	The start time of the backup. We recommend that you set a point in time within off-peak hours. Example: 01:00. Note If a previous full data backup is not finished at the start time of the next backup, DBS skips the next backup.
   Incremental Backup	Specifies whether to enable incremental backup. This parameter is displayed only if you set the Full-scale Backup Frequency parameter to Periodic Backup.
   Maximum Concurrent Threads for Full Data Backup	The maximum number of concurrent threads available for a full backup. You can set this parameter to adjust the backup speed. For example, you can reduce the number of backup threads to minimize impacts on the database. The maximum number of actual concurrent threads varies based on backup schedule specifications. For more information, see How do I change the maximum backup speed?
   Maximum Speed for Full Data Backup	The maximum speed for full data backup. This parameter helps efficiently reduce the impact of backup on the single-thread performance of the Redis instance. You can use the default value. Unit: KB/s.

7. In the Edit Lifecycle step, configure the lifecycle for full backup data in the Configure Full Data Backup Lifecycle section.

   If you set the Incremental Backup parameter to Enable in Step 6, you must configure the lifecycle for incremental backup data. For more information about the lifecycle rules of backup data, see How do I manage the lifecycle rules of backup sets?

8. After the preceding configurations are complete, click Precheck in the lower-right corner of the page.

9. If the Precheck Passed message appears, click Start Task.

   Note

   • If the state of the backup schedule changes to Running, the backup schedule takes effect.

   • If an exception or error occurs when you start the backup schedule, troubleshoot the exception or error at the earliest opportunity. For more information, see How do I fix errors for an abnormal backup schedule in DBS? If your issue persists after you use the solution that is provided in the preceding topic, contact technical support in the DBS DingTalk group (ID: 35585947).

What to do next

• After a database is backed up, you can view the backup schedule or restore the database. For more information, see View a backup schedule or Restore a Redis database.

• You can also call an API operation to create a backup schedule, or to create, configure, and then start a backup schedule. For more information, see CreateBackupPlan or CreateAndStartBackupPlan.

• For more information about how to modify the backup source, backup objects, or backup policy such as the backup time and backup set retention time of a backup schedule, see Manage a backup plan.

• For more information about fees that may be subsequently incurred by a backup schedule, see Billing FAQ.

• You can pause a backup schedule that you do not need to reduce costs. For more information, see Pause or start a backup schedule.

FAQ

Q: Why am I unable to select the destination instance when I configure a backup schedule?

A: DBS supports only Redis standard databases of Redis 4.0 that use the master-replica architecture. For more information, see the Prerequisites section of this topic.