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Connect with Ruby

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SingleStore is wire-compliant with MySQL. To connect to your database with Ruby, you can use:

  • Standard Ruby

  • Ruby on Rails

Connect with Standard Ruby

For a complete example, including samples of CRUD operations, refer to Getting started with SingleStore and Ruby GitHub repository.

Prerequisites

  • Ruby (version 2.6.x or 3.x)

  • mysql2 gem

Connection Details

To connect your Ruby application to your cluster, you'll need the following:

  • Host: Endpoint or IP Address of your SingleStore cluster.

  • Port: Default is 3306

  • User: Username of the SingleStore database user with which to connect.

  • Password: Password for the SingleStore database user .

  • Database: Name of the SingleStore database to connect with.

Here is an example of a Ruby connection for a SingleStore cluster:

client = Mysql2::Client.new(
        :host => "localhost",
        :username => "root",
        :password => "<root password>",
        :database => "test"
        )

For more examples, refer to Getting started with SingleStore stored procedures and Ruby.

Connect with Ruby on Rails

To connect with Ruby on Rails, configure your SingleStore.

Open config/database.yml and edit the development adapter to use SingleStore. You will need to have the SingleStore socket which can be found using the query SHOW VARIABLES LIKE 'socket'. For example:

singlestore -u 's2user' -p -h 'svchost-xxxx' -P 3306 -e "SHOW VARIABLES LIKE 'socket'"
+---------------+---------------------------------------+
| Variable_name | Value                                 |
+---------------+---------------------------------------+
| socket        | /var/lib/memsql/xxxx/data/memsql.sock |
+---------------+---------------------------------------+

SingleStore can run queries using the mysql2 connector in controller code. Calling execute returns a mysql2 result, which can be converted to an array and easily displayed:

class WelcomeController < ApplicationController
  def index
    render plain: ActiveRecord::Base.connection.execute('show databases').to_a.join(' ')
  end
end

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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.

  1. (Optional) Run the following command to view the associated signature files.

    curl undefined

  2. 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.

      curl -O undefined

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

    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

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