Linux

supporting information for using software collections

Part 1 of a two-part series, explores techniques that enable the portability of containers across different environments.Through these techniques, you may be able to use the same language, framework, or tool used in your datacenter straight to the IoT edge, even with different CPU architectures.

The ability to generate Kubernetes YAML from Podman is under development. Podman can now capture the description of local pods and containers and then help users transition to a more sophisticated orchestration environment like Kubernetes. This article provides a demo to illustrate the process.

The pod concept for containers was introduced in Kubernetes. Podman lets you manage pods locally, giving it an advantage over other container runtimes.

This article focuses on the Open vSwitch (OVS) userspace datapath accelerated with the Data Plane Development Kit (DPDK) and its new feature, partial flow hardware offloading, which can potentially save resources while improving the packet processing rate.

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.