Effective 23 March 2020, all new clusters can only use Cloud Backups.
When you upgrade from 4.0 to 4.2, your backup system upgrades to cloud backup if it is currently set to legacy backup. After this upgrade:
- All your existing legacy backup snapshots remain available. They expire over time in accordance with your retention policy.
- Your backup policy resets to the default schedule. If you had a custom backup policy in place with legacy backups, you must re-create it with the procedure outlined in the Cloud Backup documentation.
Atlas supports restoring a database by querying a legacy backup snapshot.
Atlas doesn't support querying Cloud Backups.
You can use a queryable backup snapshot to export data for a database and restore to the target deployment. The following procedure connects to the queryable backup instance via an Atlas-provided tunnel.
You must have the
Project Owner role for the Atlas
projects that contain the source and target clusters to restore
data from one Atlas cluster to another.
You must stop the client operations only during restoration when you restore to the same database.
You must ensure that the target Atlas cluster doesn't receive client requests during restoration. The following use cases apply:
- If you plan to restore to the same database, you must stop the client operations during restoration.
- If you plan to restore to a different database, you don't need to stop the client applications. In this case, you can restore to a new Atlas cluster and reconfigure your application to use that new cluster once the new deployment is running.
- If it is not already displayed, select the organization that contains your desired project from the Organizations menu in the navigation bar.
- If it is not already displayed, select your desired project from the Project menu in the navigation bar.
- Click Legacy Backup in the sidebar.
The Overview tab on the Legacy Backup page lists the project's clusters.
- If backup is enabled for the cluster, the Status is Active.
- If backup is disabled for the cluster, the Status is Inactive.
For the deployment whose backup you want to query, click the ellipsis in the Options column and select Query.
You can also click View All Snapshots to view its snapshots and click Query under the Actions column for the desired snapshot.
- Select the snapshot to query and click Next.
- Start the process to query a snapshot. You will be prompted to enter your Atlas password.
- Select Backup Tunnel as the connection method to the queryable snapshot.
- Select your Platform.
- Click Download Backup Tunnel.
- Uncompress the downloaded file.
Open a terminal or command prompt and go to the uncompressed <tunnel> directory. Run the executable to start the tunnel.
The default port for the tunnel is
27017. To change the port, use the
--localflag, as in the following example:
./<tunnel executable> --local localhost:27020Note
If you change the port, you must include the port information when connecting.
- To export the data from a database:
Include the following
mongodumpoptions to connect to the tunnel:
--portset to the port for the tunnel.
--dbset to the name of the database to export.
--outset to an empty directory to output the data dump.Important
Ensure that the user running
mongodumpcan write to the specified directory.
mongodump --port <port for tunnel> --db <single-database> --out <data-dump-path>
For example, to connect to a tunnel running on port
27020to dump out data from the
testdatabase to the
mongodump --port 27020 --db test --out /mydata/restoredata/
testdatabase files into the
mongodumpis not in your
$PATH, specify the path for the tool when running the command.
- To restore a single database:
Include the following
To restore to an Atlas cluster, we recommend you connect with a DNS seed list connection string using the
--uriset to the connection string for the destination cluster.
--dbset to the name of the destination database.
If your password contains special characters, it must be percent-encoded.
Optionally, you can include the
--dropoption to drop the database in the destination cluster if the database already exists.
For example, to restore from the
directory to a new database