MongoDB Backup

Last updated: 2021-11-19 14:48:50


    MongoDB Backup is a SCF-based feature provided by COS. It allows you to back up data in TencentDB for MongoDB to COS so that data can be stored persistently and stay safe from data loss or corruption. After you set a backup function rule for a bucket, SCF will scan your MongoDB backup files periodically and store them in the bucket.


    • MongoDB Backup functions only back up the backup files of TencentDB for MongoDB. Therefore, if MongoDB backup has not been enabled, the functions cannot be executed. For more information about TencentDB for MongoDB backups, please see Backing up TencentDB for MongoDB .
    • If you have added a MongoDB backup rule to your bucket via the COS console, the backup function will appear in the SCF console. DO NOT delete this function. Otherwise, your rule may not take effect.
    • Regions where SCF is available support MongoDB Backup, including Guangzhou, Shanghai, Beijing, Chengdu, Hong Kong (China), Singapore, Mumbai, Toronto, and Silicon Valley, and more. For more supported regions, please see SCF Documentation.


    1. Log in to the COS console.
    2. Click Application Integration in the left sidebar and then click MongoDB Backup.
    3. Click Configure Backup Rule to go to the rule configuration page.
    4. Click Add Function.

      If you haven’t activated SCF, please go to the SCF console to activate it and authorize the service as instructed.

    5. In the pop-up window, configure the following information:
      • Function Name: uniquely identifies a function and cannot be modified after being set. You can view the function in the SCF console.
      • Associated Bucket: a bucket to store the MongoDB backup files
      • Trigger Period: triggers the backup operation for the MongoDB Backup function. Every day, every week, and custom periods are supported.
      • Cron Expression: If you use a custom period, you can use Cron to specify the trigger period rule. Cron follows China Standard Time (UTC+8:00). For detailed configuration policies, please see Cron Documentation.
      • Database Instance: MongoDB instance in the region where the current bucket resides
      • Delivery Path: delivery path prefix of the backups. If not specified, backups will be stored in the root directory of the bucket.
      • SCF Authorization: SCF needs to be authorized so that it can read the MongoDB instances as well as their backup files, and store the backup files to the specified bucket.
    6. Click Confirm.

      You can perform the following operations on the created function:
      • Click View Log to view the historical running status of MongoDB Backup. If an error is reported, you can click View Log to quickly redirect to the SCF console for viewing the error log details.
      • Click Edit to modify a MongoDB Backup rule.
      • Click Delete to delete an unwanted MongoDB Backup rule.