Containers

Use vim in a production Red Hat OpenShift container in 6 easy steps

Use vim in a production Red Hat OpenShift container in 6 easy steps

Disclaimer: In most cases, we don’t recommend editing files in a container. However, in rare cases, you might need to reproduce and slightly modify a file in a production container, especially when debugging. (In this case, the vim method I’m using works on Fedora 32 on my laptop and it is the base of my Red Hat OpenShift container image.)

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Develop Eclipse MicroProfile applications on Red Hat JBoss Enterprise Application Platform XP 2.0

Develop Eclipse MicroProfile applications on Red Hat JBoss Enterprise Application Platform XP 2.0

This article shows you how to install Red Hat JBoss Enterprise Application Platform (JBoss EAP) XP 2.0.0 GA with support for Eclipse MicroProfile. Once you’ve enabled Eclipse MicroProfile, you will be able to use its quickstart examples to start developing your own MicroProfile applications with Red Hat CodeReady Studio. In this demonstration, you’ll learn two ways to build and run the MicroProfile Config quickstart application.

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Getting started with Buildah

Getting started with Buildah

If you’re looking to build Open Container Initiative (OCI) container images without a full container runtime or daemon installed, Buildah is the perfect solution. Now, Buildah is an open source, Linux-based tool that can build Docker- and Kubernetes-compatible images, and is easy to incorporate into scripts and build pipelines. In addition, Buildah has overlap functionality with Podman, Skopeo, and CRI-O.

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Installing Red Hat’s migration toolkit for applications on your laptop

Installing Red Hat’s migration toolkit for applications on your laptop

If you are a developer considering modernizing your Java applications by containerizing or migrating them to a more modern application server, then you are likely aware of Red Hat’s migration toolkit for applications. This article helps you get started with migration toolkit for applications by installing it directly on your laptop. For more about the toolkit, see:

Note: Red Hat’s migration toolkit for applications (formerly Red Hat Application Migration Toolkit) is based on the upstream, open source Windup project. Check out the code and see how it works!

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Spring Boot to Quarkus migrations and more in Red Hat’s migration toolkit for applications 5.1.0

Spring Boot to Quarkus migrations and more in Red Hat’s migration toolkit for applications 5.1.0

Red Hat’s migration toolkit for applications (previously known as Red Hat Application Migration Toolkit) has reached version 5.1.0. This version includes user interface improvement, the new migration toolkit for applications Operator, and new rules to support development teams migrating from Spring Boot to Quarkus.

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Red Hat build of Node.js 14 brings diagnostic reporting, metering, and more

Red Hat build of Node.js 14 brings diagnostic reporting, metering, and more

The latest Red Hat build of Node.js 14 long-term support (LTS) release. This build brings new features such as diagnostic reporting, full-icu internationalization support, and Red Hat OpenShift integration. We’ve also included tech preview features such as the new AsyncLocalStorage class, and we’ve updated our documentation and interactive developer learning scenarios. Keep reading for an overview of what’s new and how to get started with the Red Hat build of Node.js 14.

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Kubectl: Developer tips for the Kubernetes command line

Kubectl: Developer tips for the Kubernetes command line

Kubectl, the Kubernetes command-line interface (CLI), has more capabilities than many developers realize. For example, did you know that kubectl can reach the Kubernetes API while running inside a cluster? You can also use kubectl to assume different user identities, to select a custom editor to run with the kubectl edit command, and more.

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Transitioning from Docker to Podman

Transitioning from Docker to Podman

Podman is an excellent alternative to Docker containers when you need increased security, unique identifier (UID) separation using namespaces, and integration with systemd. In this article, I use real-world examples to show you how to install Podman, use its basic commands, and transition from the Docker command-line interface (CLI) to Podman. You’ll also see how to run an existing image with Podman and how to set up port forwarding.

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Using Multus and DataVolume in KubeVirt

Using Multus and DataVolume in KubeVirt

KubeVirt is a cloud-native virtual machine management framework based on Kubernetes. KubeVirt orchestrates workloads running on virtual machines in the same way that Kubernetes does for containers. KubeVirt has many features for managing the network, storage, images, and the virtual machine itself. This article focuses on two mechanisms for configuring network and storage requirements: Multus-CNI and CDI DataVolumes. You will learn how to configure these KubeVirt features for use cases that require high performance, security, and scalability.

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