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Managing databases in Managed Service for MongoDB

Written by
Updated at May 5, 2025

You can add and remove databases, as well as view information about them.

Getting a list of cluster databases

  1. Go to the folder page and select Managed Service for MongoDB.
  2. Click the name of the cluster you need and select the Databases tab.

If you do not have the Yandex Cloud CLI yet, install and initialize it.

The folder specified when creating the CLI profile is used by default. To change the default folder, use the yc config set folder-id <folder_ID> command. You can specify a different folder using the --folder-name or --folder-id parameter.

To get a list of databases in a cluster, run the command:

yc managed-mongodb database list
   --cluster-name <cluster_name>

You can request the cluster name with the list of clusters in the folder.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Use the Database.List method and send the following request, e.g., via cURL:

    curl \
  --request GET \
  --header "Authorization: Bearer $IAM_TOKEN" \
  --url 'https://mdb.api.cloud.yandex.net/managed-mongodb/v1/clusters/<cluster_ID>/databases'

    You can request the cluster ID with the list of clusters in the folder.

  3. View the server response to make sure the request was successful.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Clone the cloudapi repository:

    cd ~/ && git clone --depth=1 https://github.com/yandex-cloud/cloudapi

    Below, we assume the repository contents are stored in the ~/cloudapi/ directory.

  3. Use the DatabaseService.List call and send the following request, e.g., via gRPCurl:

    grpcurl \
  -format json \
  -import-path ~/cloudapi/ \
  -import-path ~/cloudapi/third_party/googleapis/ \
  -proto ~/cloudapi/yandex/cloud/mdb/mongodb/v1/database_service.proto \
  -rpc-header "Authorization: Bearer $IAM_TOKEN" \
  -d '{
        "cluster_id": "<cluster_ID>"
      }' \
  mdb.api.cloud.yandex.net:443 \
  yandex.cloud.mdb.mongodb.v1.DatabaseService.List

    You can request the cluster ID with the list of clusters in the folder.

  4. View the server response to make sure the request was successful.

Creating a database

Note

You can create a maximum of 1000 databases in each cluster.

  1. Go to the folder page and select Managed Service for MongoDB.

  2. Click the cluster name.

  3. Select the Databases tab.

  4. Click Create database.

  5. Enter the database name and click Create.

    A database name may contain Latin letters, numbers, underscores, and hyphens. The name may be up to 63 characters long. Such names as config, local, admin, and mdb_internal are reserved for Managed Service for MongoDB. You cannot create DBs with these names.

  6. Assign roles to allow access to the created database to the appropriate cluster users.

If you do not have the Yandex Cloud CLI yet, install and initialize it.

The folder specified when creating the CLI profile is used by default. To change the default folder, use the yc config set folder-id <folder_ID> command. You can specify a different folder using the --folder-name or --folder-id parameter.

Run the create database command and set the name of the new database:

yc managed-mongodb database create <DB_name>
  --cluster-name <cluster_name>

A database name may contain Latin letters, numbers, underscores, and hyphens. The name may be up to 63 characters long. Such names as config, local, admin, and mdb_internal are reserved for Managed Service for MongoDB. You cannot create DBs with these names.

You can request the cluster name with the list of clusters in the folder.

Managed Service for MongoDB runs the create database operation.

Authorize the appropriate cluster users for access to the database created.

  1. Open the current Terraform configuration file with an infrastructure plan.

    For more information about creating this file, see Creating clusters.

  2. Add the yandex_mdb_mongodb_database resource:

    resource "yandex_mdb_mongodb_database" "<DB_name>" {
  cluster_id = "<cluster_ID>"
  name       = "<DB_name>"
}

    A database name may contain Latin letters, numbers, underscores, and hyphens. The name may be up to 63 characters long. Such names as config, local, admin, and mdb_internal are reserved for Managed Service for MongoDB. You cannot create DBs with these names.

  3. Make sure the settings are correct.

    1. In the command line, navigate to the directory that contains the current Terraform configuration files defining the infrastructure.

    2. Run this command:

      terraform validate

      Terraform will show any errors found in your configuration files.

  4. Confirm updating the resources.

    1. Run this command to view the planned changes:

      terraform plan

      If you described the configuration correctly, the terminal will display a list of the resources to update and their parameters. This is a verification step that does not apply changes to your resources.

    2. If everything looks correct, apply the changes:

      1. Run this command:

        terraform apply

      2. Confirm updating the resources.

      3. Wait for the operation to complete.

For more information, see the Terraform provider documentation.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Use the Database.Create method and send the following request, e.g., via cURL:

    curl \
  --request POST \
  --header "Authorization: Bearer $IAM_TOKEN" \
  --header "Content-Type: application/json" \
  --url 'https://mdb.api.cloud.yandex.net/managed-mongodb/v1/clusters/<cluster_ID>/databases' \
  --data '{
            "databaseSpec": {
              "name": "<DB_name>"
            }
          }'

    Where databaseSpec is the object containing the new DB name.

    A database name may contain Latin letters, numbers, underscores, and hyphens. The name may be up to 63 characters long. Such names as config, local, admin, and mdb_internal are reserved for Managed Service for MongoDB. You cannot create DBs with these names.

    You can request the cluster ID with the list of clusters in the folder.

  3. View the server response to make sure the request was successful.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Clone the cloudapi repository:

    cd ~/ && git clone --depth=1 https://github.com/yandex-cloud/cloudapi

    Below, we assume the repository contents are stored in the ~/cloudapi/ directory.

  3. Use the DatabaseService.Create call and send the following request, e.g., via gRPCurl:

    grpcurl \
  -format json \
  -import-path ~/cloudapi/ \
  -import-path ~/cloudapi/third_party/googleapis/ \
  -proto ~/cloudapi/yandex/cloud/mdb/mongodb/v1/database_service.proto \
  -rpc-header "Authorization: Bearer $IAM_TOKEN" \
  -d '{
        "cluster_id": "<cluster_ID>",
        "database_spec": {
          "name": "<DB_name>"
        }
      }' \
  mdb.api.cloud.yandex.net:443 \
  yandex.cloud.mdb.mongodb.v1.DatabaseService.Create

    Where database_spec is the object containing the new DB name.

    A database name may contain Latin letters, numbers, underscores, and hyphens. The name may be up to 63 characters long. Such names as config, local, admin, and mdb_internal are reserved for Managed Service for MongoDB. You cannot create DBs with these names.

    You can request the cluster ID with the list of clusters in the folder.

  4. View the server response to make sure the request was successful.

Deleting a database

  1. Go to the folder page and select Managed Service for MongoDB.
  2. Click the cluster name and open the Databases tab.
  3. Click in the row with the DB you need and select Delete.

If you do not have the Yandex Cloud CLI yet, install and initialize it.

The folder specified when creating the CLI profile is used by default. To change the default folder, use the yc config set folder-id <folder_ID> command. You can specify a different folder using the --folder-name or --folder-id parameter.

To delete a database, run the command:

yc managed-mongodb database delete <DB_name>
   --cluster-name <cluster_name>

You can request the cluster name with the list of clusters in the folder.

  1. Open the current Terraform configuration file with an infrastructure plan.

    For more information about creating this file, see Creating clusters.

  2. Delete the yandex_mdb_mongodb_database resource with the name of the database you want to delete.

  3. Make sure the settings are correct.

    1. In the command line, navigate to the directory that contains the current Terraform configuration files defining the infrastructure.

    2. Run this command:

      terraform validate

      Terraform will show any errors found in your configuration files.

  4. Confirm updating the resources.

    1. Run this command to view the planned changes:

      terraform plan

      If you described the configuration correctly, the terminal will display a list of the resources to update and their parameters. This is a verification step that does not apply changes to your resources.

    2. If everything looks correct, apply the changes:

      1. Run this command:

        terraform apply

      2. Confirm updating the resources.

      3. Wait for the operation to complete.

For more information, see the Terraform provider documentation.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Use the Database.Delete method and send the following request, e.g., via cURL:

    curl \
  --request DELETE \
  --header "Authorization: Bearer $IAM_TOKEN" \
  --url 'https://mdb.api.cloud.yandex.net/managed-mongodb/v1/clusters/<cluster_ID>/databases/<DB_name>'

    You can request the cluster ID with the list of clusters in the folder, and the DB name, with the list of DBs in the cluster.

  3. View the server response to make sure the request was successful.

  1. Get an IAM token for API authentication and put it into the environment variable:

    export IAM_TOKEN="<IAM_token>"

  2. Clone the cloudapi repository:

    cd ~/ && git clone --depth=1 https://github.com/yandex-cloud/cloudapi

    Below, we assume the repository contents are stored in the ~/cloudapi/ directory.

  3. Use the DatabaseService.Delete call and send the following request, e.g., via gRPCurl:

    grpcurl \
  -format json \
  -import-path ~/cloudapi/ \
  -import-path ~/cloudapi/third_party/googleapis/ \
  -proto ~/cloudapi/yandex/cloud/mdb/mongodb/v1/database_service.proto \
  -rpc-header "Authorization: Bearer $IAM_TOKEN" \
  -d '{
        "cluster_id": "<cluster_ID>",
        "database_name": "<DB_name>"
      }' \
  mdb.api.cloud.yandex.net:443 \
  yandex.cloud.mdb.mongodb.v1.DatabaseService.Delete

    You can request the cluster ID with the list of clusters in the folder, and the DB name, with the list of DBs in the cluster.

  4. View the server response to make sure the request was successful.

Warning

Before creating a new database with the same name, wait for the delete operation to complete, otherwise the database being deleted will be restored. Operation status can be obtained with a list of cluster operations.

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Managing database users