Restoring a Cluster Instance from a Backup¶
Scenarios¶
This section describes how to restore a cluster instance from a backup.
Restoration Precautions¶
When you restore the DB instance from a backup file, a full backup file is downloaded from OBS and then restored to the DB instance at an average speed of 40 MB/s.
Method 1¶
On the Instance Management page, click the target cluster instance.
In the navigation pane on the left, click Backups & Restorations.
On the Backups & Restorations page, locate the target backup and click Restore in the Operation column.
Select either of the following restoration methods and click OK.
Create New Instance
The Create New Instance page is displayed for you to create a DB instance using the backup data. The new DB instance is independent from the original one.
The database type, DB instance type, compatible MongoDB version, storage engine, storage type, and shard quantity must be the same as those of the original and cannot be changed.
The number of mongos nodes is 2 by default and ranges from 2 to 32. You can specify the quantity.
The storage space is the same as that of the original instance by default. You can only increase the storage space.
Other settings have default values and can be modified. For details, see section Creating a Cluster Instance.
Restore to Original
Important
Restoring to the original DB instance will overwrite all existing data and the DB instance will be temporarily unavailable during the restoration.
The administrator password of the database instance remains unchanged after the restoration.
If IP address is enabled both for the shards and config, the related password has to be changed for both of them.
Method 2¶
In the navigation pane on the left, click Backup Management.
On the Backup Management page, locate the target backup on the Clusters tab and click Restore in the Operation column.
If you use an automated backup, go to 4.
If you use a manual backup, check whether the original instance of the manual backup exists:
If so, then go to 4.
If not, then you can only restore the backup to a new DB instance. Go to Create New Instance step under 4.
Select either of the following restoration methods and click OK.
Create New Instance
The Create New Instance page is displayed for you to create a DB instance using the backup data. The new DB instance is independent from the original one.
The database type, DB instance type, compatible MongoDB version, storage engine, storage type, and shard quantity must be the same as those of the original and cannot be changed.
The number of mongos nodes is 2 by default and ranges from 2 to 32. You can specify the quantity.
The storage space is the same as that of the original instance by default. You can only increase the storage space.
Other settings have default values and can be modified. For details, see section Creating a Cluster Instance.
Restore to Original
Important
Restoring to the original DB instance will overwrite all existing data and the DB instance will be temporarily unavailable during the restoration.
The administrator password of the database instance remains unchanged after the restoration.
If IP address is enabled both for the shards and config, the related password has to be changed for both of them.