Message broker
Adobe Commerce uses the RabbitMQ open-source message broker. It offers a reliable, highly available, scalable, and portable messaging system.
Message queues provide an asynchronous communications mechanism in which the sender and the receiver of a message do not contact each other. Nor do they need to communicate with the message queue at the same time. When a sender places a message in a queue, it is stored until the recipient receives them.
The message queue system must be established before you install Adobe Commerce or Magento Open Source. The basic sequence is:
- Install RabbitMQ and any prerequisites.
- Connect RabbitMQ to Adobe Commerce or Magento Open Source.
Install RabbitMQ on Ubuntu
To install RabbitMQ on Ubuntu 16, enter the following command:
sudo apt install -y rabbitmq-server
This command also installs the required Erlang packages.
If you have an older version of Ubuntu, RabbitMQ recommends installing the package from their website.
- Download the .deb package from rabbitmq-server.
- Install the package with
dpkg
.
Refer to Installing on Debian/Ubuntu for more information.
Install RabbitMQ on CentOS
Install Erlang
RabbitMQ was written using the Erlang programming language, which must be installed on the same system as RabbitMQ.
See Manual installation for more information.
Refer to the RabbitMQ/Erlang version matrix to install the correct version.
Install RabbitMQ
The RabbitMQ server is included on CentOS, but the version is often old. RabbitMQ recommends installing the package from their website.
Refer to the RabbitMQ install page to get the latest supported version. Adobe Commerce and Magento Open Source 2.3 and 2.4 support RabbitMQ 3.8.x.
Refer to Installing on RPM-based Linux for more information.
Configure RabbitMQ
Review the official RabbitMQ documentation to configure and manage RabbitMQ. Pay attention to the following items:
- Environment variables
- Port access
- Default user accounts
- Starting and stopping the broker
- System limits
Install with RabbitMQ and connect
If you install Adobe Commerce or Magento Open Source after you install RabbitMQ, add the following command-line parameters during installation:
--amqp-host="<hostname>" --amqp-port="5672" --amqp-user="<user_name>" --amqp-password="<password>" --amqp-virtualhost="/"
Where:
--amqp-host
--amqp-port
5672
.--amqp-user
guest
.--amqp-password
guest
.--amqp-virtualhost
/
.--amqp-ssl
false
. If you set the value to true, see Configure SSL for more information.Connect RabbitMQ
If you already had Adobe Commerce or Magento Open Source installed and you want to connect it to RabbitMQ, add a queue
section in the <install_directory>/app/etc/env.php
file so that it is similar to the following:
'queue' =>
array (
'amqp' =>
array (
'host' => 'rabbitmq.example.com',
'port' => '11213',
'user' => 'magento',
'password' => 'magento',
'virtualhost' => '/'
),
),
You can also set RabbitMQ configuration values using the bin/magento setup:config:set
command:
bin/magento setup:config:set --amqp-host="rabbitmq.example.com" --amqp-port="11213" --amqp-user="magento" --amqp-password="magento" --amqp-virtualhost="/"
After the running the command or updating the <install_directory>/app/etc/env.php
file with AMQP configuration values, run bin/magento setup:upgrade
to apply the changes and create the required queues and exchanges in RabbitMQ.
Configure SSL
To configure support for SSL, edit the ssl
and ssl_options
parameters in the <install_directory>/app/etc/env.php
file so that they are similar to the following:
'queue' =>
array (
'amqp' =>
array (
'host' => 'rabbitmq.example.com',
'port' => '11213',
'user' => 'magento',
'password' => 'magento',
'virtualhost' => '/',
'ssl' => 'true',
'ssl_options' => [
'cafile' => '/etc/pki/tls/certs/DigiCertCA.crt',
'certfile' => '/path/to/magento/app/etc/ssl/test-rabbit.crt',
'keyfile' => '/path/to/magento/app/etc/ssl/test-rabbit.key'
],
),
),
Start the message queue consumers
After you have connected Adobe Commerce and RabbitMQ, you must start the message queue consumers. See Configure message queues for details.