Replicate MongoDB® Collections using MongoDB® Wrapper Commands

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Note

SingleStore recommends using MongoDB® wrapper commands to replicate your MongoDB® collections into a SingleStore Kai-enabled workspace.

To replicate your MongoDB® collections using MongoDB® wrapper commands, perform the following tasks and run the respective commands on a SingleStore Kai-enabled workspace:

Ensure that the Prerequisites are met.
Create a link: Create a link using the URI of the (remote) MongoDB® instance.
MongoDB
```
db.runCommand({createLink:"<link_name>",uri:"mongodb://<username>:<password>@<hostname>:27017"})
```
For MongoDB® Atlas instances, use the mongodb+srv:// scheme. Refer to createLink for more information.
Replicate the MongoDB® collection: Use the createCollection command and specify the link created in the previous step in the from option as follows:
MongoDB
```
db.createCollection("<collection_name>", { from:{link:"<link_name>"} })
```
This command creates a collection with the specified name in SingleStore and replicates the data from the source MongoDB® collection. Refer to createCollection for more information.

Replicate MongoDB® Collections Example

The following example shows how to replicate your MongoDB® collections:

Create a link to the MongoDB® instance:

MongoDB

db.runCommand(
  { createLink: "pLink",
    uri: "mongodb://admin:pa55w04d@svchost:27017/"
  })

Create a collection and replicate your MongoDB® data:

MongoDB

db.createCollection( 
  "colTest", 
  { from: 
    { link:"pLink", 
      database:"dbTest", 
      collection:"example" }
  })

Last modified: August 2, 2024

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Verification instructions

Note: You must install cosign to verify the authenticity of the SingleStore file.

Use the following steps to verify the authenticity of singlestoredb-server, singlestoredb-toolbox, singlestoredb-studio, and singlestore-client SingleStore files that have been downloaded.

You may perform the following steps on any computer that can run cosign, such as the main deployment host of the cluster.

(Optional) Run the following command to view the associated signature files.
Shell
```
curl undefined
```
Download the signature file from the SingleStore release server.
- Option 1: Click the Download Signature button next to the SingleStore file.
- Option 2: Copy and paste the following URL into the address bar of your browser and save the signature file.
- Option 3: Run the following command to download the signature file.
  Shell
```
curl -O undefined
```

After the signature file has been downloaded, run the following command to verify the authenticity of the SingleStore file.

Shell

echo -n undefined |
    cosign verify-blob --certificate-oidc-issuer https://oidc.eks.us-east-1.amazonaws.com/id/CCDCDBA1379A5596AB5B2E46DCA385BC \
      --certificate-identity https://kubernetes.io/namespaces/freya-production/serviceaccounts/job-worker \
      --bundle undefined \
      --new-bundle-format -

Verified OK