Linux

This article discusses two game-changing performance improvements that have been added to Open Virtual Network (OVN), a component of Open vSwitch project, in the past year: ovn-nbctl daemonization and port groups. The article also discusses possible future improvements.

This article, the second is a series about eXpress Data Path (XDP), explores maps--a more-advanced eBPF feature--and some common pitfalls and basic debugging techniques.

Learn how to install Java 17 and Java 21 on Red Hat Enterprise Linux 8 and use alternatives to switch between multiple versions of Java.

This article explores how Open Virtual Network (OVN), a subproject of Open vSwitch (OVS), ARP/ND_NS actions work, the main drawbacks to the current implementation, and how to overcome these limitations by adding IP packet buffering.

This article guides you through your first XDP program, building a working example from zero and allowing you to build a light-speed network application from there. With an XDP program, you can achieve unprecedented speed in packet filtering, because a modern driver with XDP support can easily handle more than 14 Mpps.

See how eBPF, extended Berkeley Packet Filter, can be a very powerful tool to troubleshoot complex network issues. Available now in RHEL 8 Beta.

Containers can be simple. Learn how to run MariaDB, Apache HTTPD, and WordPress in containers, managed through systemd and systemctl.

Of course RHEL 8 has Python, both Python 3 and 2. Changes in RHEL 8 such as platform python and application streams improve the Python experience in RHEL.

Learn about deploying tools to debug microservices on Kubernetes/OpenShift, including OpenTracing,  Squash, Telepresence, and a Squash Operator in Ansible Automation.

An overview of the current nsswitch.conf behavior and a request for input on the future behavior of the name services switch interface in glibc.

Buildah and Podman allow you to build and run containers without installing and managing a daemon on your system/kubernetes cluster. The relationship between buildah and podman is explained.

Red Hat has recently released Clang/LLVM, Go, and Rust as General Availability. This article covers the support lifecycle and release cadence for these compilers.

Podman is part of the next generation of Linux container tools. Build docker-compatible images without Docker - this article shows you how.

Containers offer new testing opportunities, especially for foundational system software like GLIBC or tests that depend on system changes for exercising code paths

Develop applications on the most popular Linux for the enterprise.

This is a brief how-to for installing Node.js on Red Hat Enterprise Linux 8.

Install Python on RHEL 8

Learn how AppStreams enables us to deliver multiple version streams of packages, which lets you choose which version you want to install.

To install Python, type `yum install python3`. To run Python, type `python3`. What you need to know for using Python in RHEL 8.

Introduction on Podman