- Release Notes and Announcements
- User Guide
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- Access Management
- Instance Management
- Node Management
- Node Overview
- Viewing Node Information
- Adjusting Mongod Node Specification
- Adding Secondary Node
- Deleting Secondary Node
- Adding Read-Only Node
- Adjusting Shard Quantity
- Adjusting Mongos Node Specification
- Adding Mongos Node
- Enabling Mongos Access Address
- Promoting Secondary Node to Primary Node
- Restarting a Node
- Version Upgrade
- Network Configuration
- Monitoring
- Backup and Rollback
- Data Security
- SSL Authentication
- Database Management
- Multi-AZ Deployment
- Disaster Recovery/Read-Only Instances
- Recycle Bin
- Task Management
- Performance Optimization
- Data Migration Guide
- Creating a DTS Migration Task
- Migration Overview
- Supported Capabilities
- User Guide
- Migration Operation Guide
- Fix for Verification Failure
- MongoDB Connection Check
- Database/Table Content Conflict Check
- Source Database Node Role Check
- Oplog Check
- Source/Target Database Account Permission Check
- Database Version Check
- Database Capacity Check
- Target Database Load Check
- ShardKey Check
- Source Database Balancer Check
- Time Series Collection Verification
- Compression Algorithm Verification
- Consistency Check After Migration
- Creating MongoDB Data Subscription
- Creating a DTS Migration Task
- Practical Tutorial
- Optimizing Indexes to Break Through Read/Write Performance Bottlenecks
- Troubleshooting Mongos Load Imbalance in Sharded Cluster
- Considerations for Using Shard Clusters
- Sample of Reading and Writing Data in MongoDB Instance
- Methods for Importing and Exporting Data Based on CVM Connected with MongoDB
- What to Do for Errors of Repeated Instance Creation and Deletion of Databases with the Same Names?
- Troubleshooting MongoDB Connection Failures
- Performance Fine-Tuning
- Ops and Development Guide
- Troubleshooting
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Instance APIs
- RenameInstance
- OfflineIsolatedDBInstance
- ModifyDBInstanceSpec
- IsolateDBInstance
- DescribeSpecInfo
- DescribeDBInstances
- DescribeClientConnections
- CreateDBInstanceHour
- AssignProject
- RenewDBInstances
- DescribeSlowLogs
- DescribeSlowLogPatterns
- InquirePriceRenewDBInstances
- InquirePriceModifyDBInstanceSpec
- InquirePriceCreateDBInstances
- DescribeDBInstanceDeal
- DescribeSecurityGroup
- DescribeInstanceParams
- ModifyDBInstanceSecurityGroup
- ModifyDBInstanceNetworkAddress
- Backup APIs
- Account APIs
- Task APIs
- Other APIs
- Data Types
- Error Codes
- Instance Connection
- Product Performance
- FAQs
- Service Agreement
- Glossary
- Contact Us
- Release Notes and Announcements
- User Guide
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- Access Management
- Instance Management
- Node Management
- Node Overview
- Viewing Node Information
- Adjusting Mongod Node Specification
- Adding Secondary Node
- Deleting Secondary Node
- Adding Read-Only Node
- Adjusting Shard Quantity
- Adjusting Mongos Node Specification
- Adding Mongos Node
- Enabling Mongos Access Address
- Promoting Secondary Node to Primary Node
- Restarting a Node
- Version Upgrade
- Network Configuration
- Monitoring
- Backup and Rollback
- Data Security
- SSL Authentication
- Database Management
- Multi-AZ Deployment
- Disaster Recovery/Read-Only Instances
- Recycle Bin
- Task Management
- Performance Optimization
- Data Migration Guide
- Creating a DTS Migration Task
- Migration Overview
- Supported Capabilities
- User Guide
- Migration Operation Guide
- Fix for Verification Failure
- MongoDB Connection Check
- Database/Table Content Conflict Check
- Source Database Node Role Check
- Oplog Check
- Source/Target Database Account Permission Check
- Database Version Check
- Database Capacity Check
- Target Database Load Check
- ShardKey Check
- Source Database Balancer Check
- Time Series Collection Verification
- Compression Algorithm Verification
- Consistency Check After Migration
- Creating MongoDB Data Subscription
- Creating a DTS Migration Task
- Practical Tutorial
- Optimizing Indexes to Break Through Read/Write Performance Bottlenecks
- Troubleshooting Mongos Load Imbalance in Sharded Cluster
- Considerations for Using Shard Clusters
- Sample of Reading and Writing Data in MongoDB Instance
- Methods for Importing and Exporting Data Based on CVM Connected with MongoDB
- What to Do for Errors of Repeated Instance Creation and Deletion of Databases with the Same Names?
- Troubleshooting MongoDB Connection Failures
- Performance Fine-Tuning
- Ops and Development Guide
- Troubleshooting
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Instance APIs
- RenameInstance
- OfflineIsolatedDBInstance
- ModifyDBInstanceSpec
- IsolateDBInstance
- DescribeSpecInfo
- DescribeDBInstances
- DescribeClientConnections
- CreateDBInstanceHour
- AssignProject
- RenewDBInstances
- DescribeSlowLogs
- DescribeSlowLogPatterns
- InquirePriceRenewDBInstances
- InquirePriceModifyDBInstanceSpec
- InquirePriceCreateDBInstances
- DescribeDBInstanceDeal
- DescribeSecurityGroup
- DescribeInstanceParams
- ModifyDBInstanceSecurityGroup
- ModifyDBInstanceNetworkAddress
- Backup APIs
- Account APIs
- Task APIs
- Other APIs
- Data Types
- Error Codes
- Instance Connection
- Product Performance
- FAQs
- Service Agreement
- Glossary
- Contact Us
To avoid data loss caused by system crashes or other problems, TencentDB for MongoDB supports data backup and rollback after system recovery to ensure data integrity.
Overview
Backup types
Automatic backup: Data is automatically backed up as scheduled based on the system's default backup policy (such as default backup interval and mode).
Manual backup: You can run a backup task at any time to meet your business Ops and troubleshooting requirements.
Backup modes
Physical backup: In this mode, physical database files in an instance are backed up, which is fast and easy to restore with a high success rate. However, it has no portability, and the backup environment and restoration environment must be completely the same.
Logical backup: In this mode, the database instance is connected to, and the mongodump tool is used to save the operation logs to a logical backup file to back up the data, which can be restored by replaying the operation logs. This mode is slow but has a high portability. You can restore the logical backup of a database to database on different versions.
Use Limits
A backup can contain up to 7 days of continuous data; that is, you can roll back data to any time point in the last 7 days.
Note
Instance backup doesn't affect your business.
Backup files are stored in COS without using the storage space of TencentDB for MongoDB instances. For more information on COS, see Cloud Object Storage (COS).
Version Description
Version | Instance Type | Automatic backup | Manual backup |
v3.2 | Replica Set | Default backup mode: Logical backup Supported backup modes: Logical backup | Default backup mode: Logical backup Supported backup modes: Logical backup |
| Sharded cluster | Default backup mode: Logical backup Supported backup modes: Logical backup | Default backup mode: Logical backup Supported backup modes: Logical backup |
v3.6 | Replica Set | Default backup mode: Logical backup Supported backup modes: Logical backup | Default backup mode: Logical backup Supported backup modes: Logical backup |
| Sharded cluster | Default backup mode: Logical backup Supported backup modes: Logical backup | Default backup mode: Logical backup Supported backup modes: Logical backup |
v4.0 and later | Replica Set | Default backup mode: Logical backup Supported backup modes: Logical backup and physical backup | Default backup mode: Logical backup Supported backup modes: Logical backup and physical backup |
| Sharded cluster | Default backup mode: Logical backup Supported backup modes: Logical backup and physical backup | Default backup mode: Logical backup Supported backup modes: Logical backup and physical backup |
Billing Overview
Currently, backup is free of charge. We will notify you when billing for the backup space officially starts.
Prerequisites
You have created a TencentDB for MongoDB instance. For more information, see Creating TencentDB for MongoDB Instance.
The TencentDB for MongoDB replica set or sharded cluster instance is in Running status.
Adjusting the automatic backup policy
1. Log in to the TencentDB for MongoDB console.
2. In the MongoDB drop-down list on the left sidebar, select Replica Set Instance or Sharded Cluster Instance. The directions for replica set instances and sharded instances are similar.
3. Above the Instance List on the right, select the region.
4. In the instance list, find the target instance.
5. Click the target instance ID to enter the Instance Details page.
6. Select the Backup and Rollback > Backup Task List page.
7. Select the Auto-Backup Settings tab and click Edit.
8. Edit Backup Mode and Backup Start Time based on the parameter descriptions in the following table.
9. Click Save.
Parameter | Note |
Data Backup Retention | Data backup files can be retained for 7 days by default. |
Backup modes | (Optional) Select the backup mode. TencentDB for MongoDB 3.6 replica set instances don't support this parameter. |
Backup Start Time | The default start time is 10:00 PM–02:00 AM; that is, the system starts the backup task between 10:00 PM and 02:00 AM every day. You can select a different time period to start data backup as needed by your business. The specific start time varies by the specific scheduling of the backup task. |
Manual Backup
1. Log in to the TencentDB for MongoDB console.
2. In the MongoDB drop-down list on the left sidebar, select Replica Set Instance or Sharded Cluster Instance. The directions for replica set instances and sharded instances are similar.
3. Above the Instance List on the right, select the region.
4. In the instance list, find the target instance.
5. Click the target instance ID to enter the Instance Details page.
6. In the top-right corner of the Instance Details page, click Manual Backup.
7. (Optional) Select the backup mode. TencentDB for MongoDB 3.6 replica set instances don't support this parameter.
8. Add remarks and click OK.
Downloading a backup file
1. Log in to the TencentDB for MongoDB console.
2. In the MongoDB drop-down list on the left sidebar, select Replica Set Instance or Sharded Cluster Instance. The directions for replica set instances and sharded instances are similar.
3. Above the Instance List on the right, select the region.
4. In the instance list, find the target instance.
5. Click the target instance ID to enter the Instance Details page.
6. Select the Backup and Rollback > Backup Task List page.
7. In the Backup Task List, find the target file and click Download in the Operation column.
8. In the Generate Backup File pop-up window, read the backup note carefully and click OK.
9. Select the File Download List tab and view the backup task progress.
10. After the task execution is completed, you can back up the data to your local device and view it as follows:
Over public network: Click Download from Public Network in the Operation column and directly use the browser to download the backup to your local device.
Over private network: Copy the private network address and run a
wget command wget -c 'private network address' -O backup.tar in a CVM instance to download the backup at a high speed over the private network. For detailed directions on how to log in to CVM, see Customizing Linux CVM Configurations.Related APIs
API Name | Description |
DescribeDBBackups | |
CreateBackupDBInstance | |
DescribeBackupDownloadTask | |
CreateBackupDownloadTask |
Yes
No
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