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RabbitMQ.md

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To install RabbitMQ on a Ubuntu system, you can follow these steps:

  1. Update the Packages

    Update the packages to the latest version with the following command:

    sudo apt-get update -y
sudo apt-get upgrade -y

  2. Install Required Packages

    Install the necessary packages, Erlang being a chief one as RabbitMQ is built on the Erlang runtime.

    sudo apt-get install -y erlang

  3. Add the RabbitMQ Repository

    To add the official RabbitMQ repository, first add the RabbitMQ signing key to your system:

    wget -O- https://www.rabbitmq.com/rabbitmq-release-signing-key.asc | sudo apt-key add -

    Add the RabbitMQ repository to your system's sources:

    echo "deb https://dl.bintray.com/rabbitmq-erlang/debian buster erlang" | sudo tee /etc/apt/sources.list.d/bintray.erlang.list
echo "deb https://dl.bintray.com/rabbitmq/debian buster main" | sudo tee /etc/apt/sources.list.d/bintray.rabbitmq.list

  4. Update the Package Lists

    To make sure your system knows about the packages in the RabbitMQ repository you just added, update the package lists:

    sudo apt-get update -y

  5. Install RabbitMQ Server

    Install the RabbitMQ server:

    sudo apt-get install -y rabbitmq-server

  6. Start and Enable RabbitMQ Service

    Once the RabbitMQ server is installed, start the RabbitMQ service and enable it to launch at boot with:

    sudo systemctl start rabbitmq-server
sudo systemctl enable rabbitmq-server

  7. Check the Status of RabbitMQ Service

    You can check the status of the RabbitMQ service to ensure that it is running properly:

    sudo systemctl status rabbitmq-server

This installs RabbitMQ and sets it up to run as a service, meaning that it will start up automatically whenever your system boots.

Please note that these instructions are for Ubuntu 18.04 LTS and newer versions, so they may not work exactly as written on other systems. You may need to adapt them for your specific operating system.

You can monitor RabbitMQ server and get information about exchanges, queues, bindings, and more by using RabbitMQ management plugin. If it's not enabled by default, you can enable it by running:

sudo rabbitmq-plugins enable rabbitmq_management

Once the plugin is enabled, you can access the RabbitMQ management console via a web browser at:

http://localhost:15672

By default, the username and password are both "guest".

However, if you prefer to use command line, you can use the following commands:

  1. List of Queues

    sudo rabbitmqctl list_queues

  2. List of Exchanges

    sudo rabbitmqctl list_exchanges

  3. List of Bindings

    sudo rabbitmqctl list_bindings

  4. List of Connections

    sudo rabbitmqctl list_connections

  5. List of Channels

    sudo rabbitmqctl list_channels

  6. List of Consumers

    sudo rabbitmqctl list_consumers

Remember to replace localhost with the IP address of your RabbitMQ server if it's not on the same machine.

The default 'guest' user in RabbitMQ is only permitted to access the server from localhost for security reasons. This is a good default setting for security, but if you want to change it, you'll need to add a new user.

You can add a new user and give it permissions by using the following commands:

  1. Add a new user

    Replace 'newuser' and 'newpassword' with your desired username and password.

    sudo rabbitmqctl add_user newuser newpassword

  2. Set user tags

    The tags parameter is a comma-separated list of user tags for the user. The tag 'administrator' will provide the user with administrative privileges.

    sudo rabbitmqctl set_user_tags newuser administrator

  3. Set permissions for the new user

    This command gives the new user access to all resources, including virtual hosts, exchanges, queues, bindings, etc.

    sudo rabbitmqctl set_permissions -p / newuser ".*" ".*" ".*"

After running these commands, you should be able to connect to RabbitMQ from a remote host using the new username and password you've just created.

Remember to replace 'newuser' and 'newpassword' with the actual username and password you want to use. Make sure to use a strong, unique password to keep your RabbitMQ server secure.

And of course, ensure your firewall rules allow connections to RabbitMQ ports (typically 5672 for the messaging service itself, and 15672 for the web-based management plugin if it's enabled and you want to access it remotely).