Linux

How to install Rabbitmq in Rocky Linux/Alma Linux/Centos 8

In this guide we will explore how to install the latest release of RabbitMQ in Rocky Linux 8 server or Workstation. This will also work for RHEL 8 derivatives like Oracle linux, Alma linux and Centos 8.

RabbitMQ is an open source message broker software that implements the Advanced Message Queuing Protocol (AMQP). RabbitMQ works by receiving messages from publishers (applications that publish them) and routes them to consumers (applications that process them).

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Prerequisites

To follow along, ensure you have the following

  • An updated Rocky Linux/Centos 8 server
  • Access to the internet
  • Root access or user with Sudo access

Updating the system

Before proceeding, ensure that the server packages are up to date. Use this command to achieve that:

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sudo dnf -y update

Adding PackageCloud Yum Repository

The RabbitMQ package is distributed via Yum repositories on PackageCloud. Install the PackageCloud Yum repository using this command:

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curl -s https://packagecloud.io/install/repositories/rabbitmq/rabbitmq-server/script.rpm.sh | sudo bash

This is the output on my server:

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$ curl -s https://packagecloud.io/install/repositories/rabbitmq/rabbitmq-server/script.rpm.sh | sudo bash
Detected operating system as rocky/8.
Checking for curl...
Detected curl...
Downloading repository file: https://packagecloud.io/install/repositories/rabbitmq/rabbitmq-server/config_file.repo?os=rocky&dist=8&source=script
done.
Installing yum-utils...
rabbitmq_rabbitmq-server-source                                                                                                                                             1.4 kB/s | 819  B     00:00
rabbitmq_rabbitmq-server-source                                                                                                                                              23 kB/s | 3.9 kB     00:00
Importing GPG key 0x4D206F89:
 Userid     : "https://packagecloud.io/rabbitmq/rabbitmq-server (https://packagecloud.io/docs#gpg_signing) <support@packagecloud.io>"
 Fingerprint: 8C69 5B02 19AF DEB0 4A05 8ED8 F4E7 8920 4D20 6F89
 From       : https://packagecloud.io/rabbitmq/rabbitmq-server/gpgkey
rabbitmq_rabbitmq-server-source                                                                                                                                             398  B/s | 296  B     00:00
Package yum-utils-4.0.18-4.el8.noarch is already installed.
Dependencies resolved.
Nothing to do.
Complete!
Generating yum cache for rabbitmq_rabbitmq-server...
Importing GPG key 0x4D206F89:
 Userid     : "https://packagecloud.io/rabbitmq/rabbitmq-server (https://packagecloud.io/docs#gpg_signing) <support@packagecloud.io>"
 Fingerprint: 8C69 5B02 19AF DEB0 4A05 8ED8 F4E7 8920 4D20 6F89
 From       : https://packagecloud.io/rabbitmq/rabbitmq-server/gpgkey
Generating yum cache for rabbitmq_rabbitmq-server-source...

The repository is setup! You can now install packages.

Installing Erlang

RabbitMQ requires Erlang/OTP to run. The rabbitmq/erlang-rpm project provides a zero dependency 64-bit Erlang RPM package that provides just enough to run RabbitMQ. Get the latest from the releases here https://github.com/rabbitmq/erlang-rpm/releases.

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curl -LO -C - https://github.com/rabbitmq/erlang-rpm/releases/download/v24.1.4/erlang-24.1.4-1.el8.x86_64.rpm

Then install the downloaded file

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sudo dnf install ./erlang-24.1.4-1.el8.x86_64.rpm

This is the output on my server

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$ sudo dnf install ./erlang-24.1.4-1.el8.x86_64.rpm
rabbitmq_rabbitmq-server                                             1.3 kB/s | 833  B     00:00
rabbitmq_rabbitmq-server-source                                      1.6 kB/s | 819  B     00:00
Dependencies resolved.
=====================================================================================================
 Package             Architecture        Version                     Repository                 Size
=====================================================================================================
Installing:
 erlang              x86_64              24.1.4-1.el8                @commandline               20 M

Transaction Summary
=====================================================================================================
Install  1 Package

Total size: 20 M
Installed size: 36 M
Is this ok &#91;y/N]: y
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                             1/1
  Installing       : erlang-24.1.4-1.el8.x86_64                                                  1/1
  Running scriptlet: erlang-24.1.4-1.el8.x86_64                                                  1/1
  Verifying        : erlang-24.1.4-1.el8.x86_64                                                  1/1

Installed:
  erlang-24.1.4-1.el8.x86_64

Complete!

Installing Rabbitmq

Once you have configured RabbitMQ repository, install RabbitMQ Server using the commands below.

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sudo dnf install -y rabbitmq-server

Package details can be queried using rpm command with the option -qi.

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$ rpm -qi rabbitmq-server
Name        : rabbitmq-server
Version     : 3.9.9
Release     : 1.el8
Architecture: noarch
Install Date: Thu 11 Nov 2021 07:00:01 PM UTC
Group       : Development/Libraries
Size        : 19373970
License     : MPLv2.0 and MIT and ASL 2.0 and BSD
Signature   : RSA/SHA512, Thu 11 Nov 2021 02:33:37 PM UTC, Key ID 6b73a36e6026dfca
Source RPM  : rabbitmq-server-3.9.9-1.el8.src.rpm
Build Date  : Thu 11 Nov 2021 02:33:35 PM UTC
Build Host  : d4cd7bb3-d581-4bc0-6514-d4dc9ef3ea72
Relocations : (not relocatable)
URL         : https://www.rabbitmq.com/
Summary     : The RabbitMQ server
Description :
RabbitMQ is an open source multi-protocol messaging broker.

Starting and enabling rabbitmq-server service

Start the service

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sudo systemctl start rabbitmq-server

Then check the status to confirm its running

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$ sudo systemctl status rabbitmq-server
&#x25CF; rabbitmq-server.service - RabbitMQ broker
   Loaded: loaded (/usr/lib/systemd/system/rabbitmq-server.service; disabled; vendor preset: disabled)
   Active: active (running) since Thu 2021-11-11 19:01:51 UTC; 28s ago
 Main PID: 76165 (beam.smp)
    Tasks: 24 (limit: 23167)
   Memory: 95.7M
   CGroup: /system.slice/rabbitmq-server.service
           &#x251C;&#x2500;76165 /usr/lib64/erlang/erts-12.1.4/bin/beam.smp -W w -MBas ageffcbf -MHas ageffcbf -MBlmbcs 512 -MHlmbcs 512 -MMmcs 30 -P 1048576 -t 5000000 -stbt db -zdbbl 128000 -sbwt none -sbwt>
           &#x251C;&#x2500;76180 erl_child_setup 32768
           &#x251C;&#x2500;76203 /usr/lib64/erlang/erts-12.1.4/bin/epmd -daemon
           &#x251C;&#x2500;76224 inet_gethost 4
           &#x2514;&#x2500;76225 inet_gethost 4

Nov 11 19:01:49 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:   Doc guides:  https://rabbitmq.com/documentation.html
Nov 11 19:01:49 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:   Support:     https://rabbitmq.com/contact.html
Nov 11 19:01:49 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:   Tutorials:   https://rabbitmq.com/getstarted.html
Nov 11 19:01:49 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:   Monitoring:  https://rabbitmq.com/monitoring.html
Nov 11 19:01:49 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:   Logs: /var/log/rabbitmq/rabbit@ip-10-2-40-72.log
Nov 11 19:01:49 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:         /var/log/rabbitmq/rabbit@ip-10-2-40-72_upgrade.log
Nov 11 19:01:49 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:         <stdout>
Nov 11 19:01:49 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:   Config file(s): (none)
Nov 11 19:01:51 ip-10-2-40-72.us-west-2.compute.internal rabbitmq-server&#91;76165]:   Starting broker... completed with 0 plugins.
Nov 11 19:01:51 ip-10-2-40-72.us-west-2.compute.internal systemd&#91;1]: Started RabbitMQ broker.

Now you can enable it on boot

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sudo systemctl enable rabbitmq-server

You can get status of rabbitmq internals:

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$ sudo rabbitmqctl status

Optional: Enabling RabbitMQ Dashboard

Use the rabbitmq-plugins enable command to enable the management dashboard:

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$ sudo rabbitmq-plugins enable rabbitmq_management

Enabling plugins on node rabbit@ip-10-2-40-72:
rabbitmq_management
The following plugins have been configured:
  rabbitmq_management
  rabbitmq_management_agent
  rabbitmq_web_dispatch
Applying plugin configuration to rabbit@ip-10-2-40-72...
The following plugins have been enabled:
  rabbitmq_management
  rabbitmq_management_agent
  rabbitmq_web_dispatch

started 3 plugins.

The web service is up listening on port 15672

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$ ss -tunlp | grep 15672

tcp   LISTEN 0      128          0.0.0.0:15672      0.0.0.0:*

If you have an active Firewalld service, allow ports 5672 and 15672

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sudo firewall-cmd --add-port={5672,15672}/tcp --permanent
sudo firewall-cmd --reload

Access it by opening the URL <a href="https://computingforgeeks.com/" target="_blank" rel="noreferrer noopener">http://[server</a> IP]:15672 like http://127.0.0.1:15672

By default, the guest user exists and can connect only from localhost. You can log in with this user locally with the password “guest”

To be able to login on the network, create an admin user like below:

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$ sudo rabbitmqctl add_user admin Sec3t

Adding user "admin" ...
Done. Don't forget to grant the user permissions to some virtual hosts! See 'rabbitmqctl help set_permissions' to learn more.

$ sudo rabbitmqctl set_user_tags admin administrator
Setting tags for user "admin" to [administrator] ...

Login with this admin username and the password assigned. You should see rabbitmq dashboard.

To use rabbitmqadmin command line tool, copy it to your $PATH.

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sudo dnf install -y mlocate
sudo updatedb
sudo cp `locate rabbitmqadmin` /usr/local/bin/rabbitmqadmin
sudo chmod +x /usr/local/bin/rabbitmqadmin

You need to have python installed and configured to run rabbitmqadmin. Use this command to ensure that python is installed:

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sudo dnf install -y python3

7. Basic RabbitMQ User Management Commands

Delete User:

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sudo rabbitmqctl delete_user user

Change User Password:

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sudo rabbitmqctl change_password user strongpassword

Create new Virtualhost:

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sudo rabbitmqctl add_vhost /my_vhost

List available Virtualhosts:

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sudo rabbitmqctl list_vhosts

Delete a virtualhost:

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sudo rabbitmqctl delete_vhost /myvhost

Grant user permissions for vhost:

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sudo rabbitmqctl set_permissions -p /myvhost user ".*" ".*" ".*"

List vhost permissions:

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sudo rabbitmqctl list_permissions -p /myvhost

To list user permissions:

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rabbitmqctl list_user_permissions user

Delete user permissions:

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rabbitmqctl clear_permissions -p /myvhost user

Conclusion

We have managed to install Rabbitmq in this guide

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