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RabbitMQ is the message-queueing software that offers support for sending and receiving messages between distributed systems, applications, and services. In this tutorial, I will show you step-by-step how to set up the RabbitMQ Cluster on a CentOS 7 Server.

We will show you how to change user password in Linux. Changing user passwords in Linux could be one of the most common tasks you will have to perform while you are administering a multi-user server.

Keeping the system up to date is an every day task for a sysadmin, as well as a desktop user. By applying the latest (stable) available software on the system we can take advantage of the latest features, and will be more protected from security issues and hopefully suffer less from bugs. To update the system you will need configured yum repositories that act as the source of the updated software.

Docker Compose is a tool that allows you to define and run multi-container Docker applications.

With Compose, you define the application’s services, networks and volumes in a single YAML file, then spin your application with a single command.

Of the many things the go executable can do, most people know only go run and go build. And, of the many packages in the standard Go library, most people know only the fmt package. This cheat sheet will list many uses of the go executable and the most important packages in the Go standard library. Download the Go command and packages cheat sheet read more

Reverse proxy is a kind of a proxy that takes http or https request & transfers/distributes them to one or more backend servers. In this tutorial, we will be using three instances of Apache tomcat server & will than use apache reverse proxy as load balancer to distribute & redirect the requests to these three tomcat servers.

In whatever imaginative way you decide to use Kafka, one thing is certain — You won’t be using it as a single instance. It is not meant to be used that way, and even if your distributed app needs only one instance (broker) for now, it will eventually grow and you need to make sure that Kafka can keep up. Docker-compose is the perfect partner for this kind of scalability.

Our writer community grows each month as new, interesting folks write for us and join in on the fun of sharing their expertise and experiences in open source technology. So, it's no surprise that they are brimming with fascinating information. It's just asking the right question to release it. Recently, I asked: What programming languages do you use at work, and which ones do you use on the weekend? read more

Doc Searls and Katherine Druckman talk to Erich Andersen, Corporate Vice President, Deputy General Counsel at Microsoft and Keith Bergelt, CEO of Open Invention Network about Microsoft's recently announced membership with the Open Invention Network patent community.

When I was starting in the world of amateur digital photography, I learned about 2 software programs that everybody was using: Adobe Photoshop and Adobe Lightroom. In the Free and Open Source world, there are 2 amazing alternatives: GIMP and Darktable. For many people, getting started can be daunting. Therefore I like to present the absolute basics of photo editing with Darktable.

Multiple vulnerabilities have been discovered in PHP, the most severe of which could allow an attacker to execute arbitrary code. Systems affected: PHP 7.2 prior to 7.2.11, PHP 7.1 prior to 7.1.23, PHP 7.0 prior to 7.0.32, and PHP 5.6 prior to 5.6.38

Many users associate desktop Linux with their daily repetitive grind. However, we are always on the look out for applications that help make Linux fun to use. It really is a great platform for entertainment.

While traditional silicon forms of compute including x86 and Power are likely to remain the cornerstone of servers for at least another generation, CPUs are increasingly being accelerated by GPUs

Edge computing has gradually climbed the hype curve over the last couple of years, and it now stands at the center of why we do new things and launch new technologies. Why is it so important, what does it mean, where is the money behind the movement, and what does it mean to you? These are all good questions, and there is no simple answer to any of them.

The move opens up Microsoft's 60,000 patents to Open Invention Network members who are using them in the Linux system. What does that mean, specifically? Read on.

Further proof probably isn't needed to confirm that Kubernetes has become the de facto standard when it comes to container orchestration, but if you need more, the Cloud Foundry Foundation announced this week that it has taken on two new Kubernetes-focused projects.

Whether you're following your internal information security policy or trying to meet regulatory requirements such as GDPR, ANSSI, PCI DSS, HIPAA, or NIST, you are likely looking for ways to protect the privacy and integrity of your data and software. That solution can be found in encryption. OpenStack provides all the ingredients necessary to deploy privacy and integrity solutions, but it is up to the operator to deploy them securely.

GNOME Project's Abderrahim Kitouni emailed the community to inform us all that the development cycle of the upcoming GNOME 3.32 desktop environment kicked off officially and that the first development milestone is now ready for public testing.

Doc Searls and Katherine Druckman talk to Erich Andersen, Corporate Vice President, Deputy General Counsel at Microsoft and Keith Bergelt, CEO of Open Invention Network about Microsoft's recently announced membership with the Open Invention Network patent community.

We have had a lot of news about games in the Linux world coming out in recent weeks. We already have an interesting performance for games like Grand Theft Auto V, and the trend is for the compatibility level to improve every day, with Valve's recent announcement of Proton as announced here! This even was the head behind the development of DXVK which brought a new step in the compatibility of Windows games on Linux.