Magento 2 What to update in existing CE to get RabbitMQ working

Question

I have a few installations that slowly have been upgraded to 2.3.3 without RabbitMQ. Now I have added Rabbit but I am not sure I've covered all changes needed.

The queue config is added in etc/env.php and I see that Magento connects to Rabbit (creating topcis).

I've edited all of these files in the file system:

• queue_consumer.xml
• queue.xml
• queue_publisher.xml
• queue_topology.xml
• communication.xml

to use amqp instead of magento-db. Then the site is upgraded and redeployed.

I see some messages coming but fewer than I expected. For example I can't see messages when an order is created.

Did I miss anything? Something else I should change or is this correct?

Answer 1

Seems I was on the right path but also had to enable the cron runner for consumers. It looks like it is not added by default on an upgrade.

I added following to app/etc/env.php and did a redeploy (upgrade):

    'cron_consumers_runner' => [
        'cron_run' => true,
        'max_messages' => 10000,
        'consumers' => []
    ],