DevOps and Development

Learn about the difference between Cassandra and MongoDB. These NoSQL databases have some similarities, but many more differences. Examine these factors and decide which database is better for you.

Git, the popular version control system, has a plethora of commands for managing your project history. This article lists out all the important commands every developer will need at some point. For future reference, it includes a downloadable PDF Git commands cheat sheet.

RabbitMQ manages messaging queues and boosts communication between your loosely coupled services. This well laid out article contains instructions on how to install RabbitMQ on a Kubernetes cluster using the Helm package manager.

This article focuses on the benefits of migrating to a new distributed architecture. Containers have taken the DevOps world by storm and streamlined the software deployment process. Almost all applications can be containerized. Use this tutorial to find out where to start and what to look out for.

CMD is Docker instruction used if you need a default command which users can easily override. ENTRYPOINT is used when you want to define a container with a specific executable. You cannot override ENTRYPOINT when starting a container. Combine ENTRYPOINT with CMD if you need to have a container with a specified executable and a default parameter which can easily be modified.

Persistent Volumes are used in Kubernetes orchestration when you want to preserve the data in the volume even after a specific pod has finished claiming it. It is a way of connecting a container to external storage through a series of abstractions. Learn more about this useful Kubernetes feature here.

This article presents basic security principles such as defense-in-depth and restricted privilege. Learn how to apply these principles in a distributed system such as a Kubernetes cluster.

This tutorial provides instructions on installing Python 3 and Python 2 on CentOS 8 with guidance on how to set the default version of Python.

For running and developing applications with Java on CentOS 8, you need to set up the Java Development Kit (JDK). There are two different implementations of JDK – OpenJDK and Oracle JDK. Learn how to install Java on CentOS 8, set up the default Java version, and the JAVA_HOME environment variable.

This article is a step-by-step tutorial on how to install Git on CentOS 8. As a popular version control system, Git organizes the development cycle of an application, keeps track of code changes, creates branches, and allows collaboration within a software team. Install Git from the CentOS 8 repository or its source code by following the instructions in this guide.