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RabbitMQ is an open source message broker software (also called message-oriented middleware) that implements the Advanced message queuing Protocol (AMQP). The RabbitMQ server is written in Erlang language, while clustering and failover are built on the framework of an open telecommunications platform. All major programming languages have client libraries that communicate with agent interfaces. Update the basic system

Before installing any software packages, it is recommended that you update the packages and repositories with the following command

Yum-y update install Erlang

Because RabbitMQ is developed based on the Erlang (language for high concurrency) language, you need to install Erlang before installing RabbitMQ. In this tutorial we will install the latest version of Erlang to the server. Erlang is not available in the default YUM repository, so you will need to install the EPEL repository. Running the following command is the same.

Yum-y install epel-releaseyum-y update

Install Erlang

Yum-y install erlang socat

You can now check the Erlang version using the following command.

Erl-version

You will get the following output:

[root@liptan-pc ~] # erl-versionErlang (ASYNC_THREADS,HIPE) (BEAM) emulator version 5.10.4 install RabbitMQ

RabbitMQ provides RPM packages for enterprise Linux systems that are precompiled and can be installed directly. The only dependency required is to install Erlang into the system. We have installed Erlang and we can download RabbitMQ further. Download the Erlang RPM package by running it.

Download RabbitMQ

Download RabbitMQ

Wget https://www.rabbitmq.com/releases/rabbitmq-server/v3.6.10/rabbitmq-server-3.6.10-1.el7.noarch.rpm

If you don't have wget installed, run yum-y install wget. You can always find a link to the latest version of the RabbitMQ download page.

Install RabbitMQ

Import the GPG key by running:

Rpm-import https://www.rabbitmq.com/rabbitmq-release-signing-key.asc

Run RPM to install the RPM package:

Rpm-Uvh rabbitmq-server-3.6.10-1.el7.noarch.rpm

RabbitMQ is now installed on the system.

Use RabbitMQ

Running

Systemctl start rabbitmq-server

Self-booting

Systemctl enable rabbitmq-server

Check statu

Systemctl status rabbitmq-server visits the Web console to start the web console

Start the RabbitMQ Web Management console by running:

Rabbitmq-plugins enable rabbitmq_management

Provide ownership of the RabbitMQ file to the RabbitMQ user by running the following command:

Chown-R rabbitmq:rabbitmq / var/lib/rabbitmq/ create user

Now you will need to create an administrative user for the RabbitMQ Web administrative console. Running the following command is the same.

Rabbitmqctl add_user admin StrongPasswordrabbitmqctl set_user_tags admin administratorrabbitmqctl set_permissions-p / admin ". *"

Change the administrator to the preferred user name of the administrator user. Be sure to change the StrongPassword to a very strong password.

To access the administrative panel of RabbitMQ, use your favorite Web browser and open the following URL.

Introduction to http://Your_Server_IP:15672/ Management Interface

Login is required for the first visit. The default account password is: guest/guest

Home page

Connections: both producers and consumers need to establish a connection with RabbitMQ to complete the production and consumption of messages. You can check the connection here.

Channels: a channel. After a connection is established, a channel is formed, and the delivery of messages depends on the channel.

Exchanges: switch, used to route messages

Queues: queues, or message queues, where messages are stored in queues, waiting for consumption, and then removed after consumption.

Port:

Add user

The Tags option above actually specifies the role of the user. The following options are available:

Super Admin (administrator)

Can log in to the management console, can view all the information, and can operate on users, policies (policy).

Supervisor (monitoring)

You can log in to the management console and view information about rabbitmq nodes (number of processes, memory usage, disk usage, etc.)

Policy maker (policymaker)

Can log in to the management console and manage policy at the same time. However, you cannot view the information about the node (the part identified in the red box above).

General Manager (management)

You can only log in to the management console, you cannot see the node information, and you cannot manage the policy.

Other

Unable to log on to the management console, usually ordinary producers and consumers.

Create a virtual host (Virtual Hosts)

In order to allow users to work without interfering with each other, RabbitMQ adds the concept of virtual host (Virtual Hosts). In fact, it is an independent access path. Different users use different paths and have their own queues and switches, which will not affect each other.

After creating the virtual host, we also need to add access rights to the user:

Click the added virtual host:

Enter the virtual host settings interface:

Original address: https://www.linuxprobe.com/linux-rabbitmq.html

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