Producer can be initialized using the following code sample in a Node.js app:

    var Kafka = require('no-kafka');
    var brokerURLs = process.env.KAFKA_URL.replace(/+ssl/g,'');

    var producer = new Kafka.Producer({
      connectionString: brokerURLs,
      ssl: {
        certFile: './client.crt',
        keyFile: './client.key'
       }
    });
    producer.init();