Connect with legacy drivers

DataStax does not support legacy drivers, which includes the PHP and Ruby drivers.

For the best experience, use supported drivers to connect to an Astra DB database. For details about supported drivers and versions, see Cassandra drivers supported by DataStax.

Only use legacy drivers to migrate an existing Apache Cassandra® application that was developed with a legacy driver to Astra DB.

Prerequisites

Legacy drivers were developed for Apache Cassandra®. To connect to Astra DB with a legacy driver, you must collect connection information from the database’s Secure Connect Bundle (SCB) and set up the required SSL context for your driver. If you use VPC peering, you can download an external SCB for use within your VPC peering. Alternatively, you can use the SSL-related files (ca.cert, cert, and key) and the port from the cqlshrc file.

Download your database’s SCB.
From the SCB, get the SSL-related files:
- ca.cert
- cert
- key
In the cqlshrc file, get the port.

Use only the port from cqlshrc. Other ports in the SCB cannot support the legacy driver connection.
In the config.json file, get the hostname.

PHP legacy driver

Use these steps to connect to Astra DB with the PHP driver:

Install the PHP Driver for Cassandra.
Get a Client ID and Client Secret by creating an application token.
Copy the certificate files from the Astra DB SCB to /etc/ssl/certs/astra-secure-connect. This folder should contain the ca.cert, cert, and key files.

Create a PHP script file, and then enter the following code:

<?php

$ssl     = Cassandra::ssl()
               \->withTrustedCerts('/etc/ssl/certs/astra-secure-connect/ca.cert')
               \->withClientCert('/etc/ssl/certs/astra-secure-connect/cert')
               \->withPrivateKey('/etc/ssl/certs/astra-secure-connect/key')
               \->build();


$cluster = Cassandra::cluster()
               \->withSSL($ssl)
               \->withCredentials("CLIENT_ID", "CLIENT_SECRET")
               \->withContactPoints('HOSTNAME')
               \->withPort(PORT)
               \->build();

$session = $cluster\->connect();

$result = $session\->execute('SELECT keyspace_name, table_name FROM system_schema.tables');

foreach ($result as $row) {
    printf("The keyspace "%s" has a table "%s".
    ", $row['keyspace_name'], $row['table_name']);
}"

Replace the following:

HOSTNAME: Your Astra DB database hostname, such as DB_ID-REGION_NAME.db.astra.datastax.com.
PORT: Your Astra DB database port.
CLIENT_ID and CLIENT_SECRET**: The Client ID and Client Secret from your application token.

Ruby legacy driver

Use these steps to connect to Astra DB with the Ruby driver:

Install the Ruby Driver for Cassandra.
Copy the certificate files from the Astra DB SCB to /etc/ssl/certs/astra-secure-connect. This folder should contain the ca.cert, cert, and key files.

Create a Ruby script file, and then enter the following code:

require 'cassandra'

cluster = Cassandra.cluster(
            username: 'CLIENT_ID',
            password: 'CLIENT_SECRET',
            hosts: ['HOSTNAME'],
            port: PORT,
            server_cert: '/etc/ssl/certs/astra-secure-connect/ca.cert',
            client_cert: '/etc/ssl/certs/astra-secure-connect/cert',
            private_key: '/etc/ssl/certs/astra-secure-connect/key'
)

keyspace = 'system_schema'
session  = cluster.connect(keyspace) # create session, optionally scoped to a keyspace, to execute queries

future = session.execute_async('SELECT keyspace_name, table_name FROM tables') # fully asynchronous api
future.on_success do |rows|
  rows.each do |row|
    puts "The keyspace #{row['keyspace_name']} has a table #{row['table_name']}"
  end
end
future.join

Replace the following:

HOSTNAME: Your Astra DB database hostname, such as DB_ID-REGION_NAME.db.astra.datastax.com.
PORT: Your Astra DB database port.
CLIENT_ID and CLIENT_SECRET**: The Client ID and Client Secret from your application token.

Connect with legacy drivers

Prerequisites

PHP legacy driver

Ruby legacy driver

See also

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