Virtual private network (VPN) technology has changed immensely since the publication of the original Guide to IPsec VPNs (SP 800-77) in 2005. The guide was recently reworked and modernized, and Red Hat engineers lent a hand to updating this important document. The updated document takes into consideration the evolution of cryptography, software and hardware capabilities,…
Read More →Category: Linux
Once upon a time, the term “product documentation” conjured images of ring-bound tomes several thousand pages long that would get shipped to users alongside the latest offering. In the days before the internet, this wasn’t just the best option available; it was the only option. It was big, it was slow, and it was expensive,…
Read More →Seeing a demo of Session Recording in Red Hat Enterprise Linux 8 was an eye-opener for me because it may change the way we manage systems. Let’s take a look at what you can do with session recording and where it comes in handy for troubleshooting. Session recording can help system administrators track and trace…
Read More →We’ve all been in situations where something works on one system, but not another, and we’re not sure why. Perhaps your boss is asking “Why does this work in the test environment, but not production?” and you need an answer as soon as possible. In the past when this has happened, I would open SSH…
Read More →This month marks the five year anniversary since Red Hat acquired Ansible, and since then, much has changed in the IT automation world. IT organizations have always faced continual pressure to support rapid innovation at-scale, but 2020 has been an especially challenging year. Organizations required solutions that delivered fast responses to changing business requirements, and automation…
Read More →Application allowlisting is the practice of specifying an index of approved applications or executable files that are permitted to run on a system by a specific user. This is often used on a multi-user system or some kind of a shared hosting server, where multiple users exist and they have to be given limited permissions, so…
Read More →Red Hat Enterprise Linux (RHEL) version 7.5 introduced the “boom” utility for managing LVM snapshot and image boot entries. This new functionality could be very helpful for system administrators, especially those responsible for RHEL servers running directly on physical hardware, where booting from snapshots has previously been more difficult. This post will cover the…
Read More →When we unveiled Red Hat Enterprise Linux 8 at Red Hat Summit 2019, our primary focus was to deliver innovation while keeping enterprise IT’s needs for production reliability and operational compatibility front-and-center. With this launch came a predictable, six month release cadence for minor releases which continues today with Red Hat Enterprise Linux 8.3 beta. With global…
Read More →In this final entry for the container security series, we’ll look at network traffic control for containers running in Red Hat OpenShift. In a Multi-Level Security (MLS) environment, you will want to be able to ensure that containers in different security levels can only talk to pods in the same security level. For instance, a…
Read More →In Red Hat Enterprise Linux 8.1, we added new container features including full support for rootless Podman, Podman Play/generate Kube, and container images for the Golang toolset (“A minor release with major new container capabilities“). Red Hat Enterprise Linux 8.2 hits the ground with an even bigger set of features. Here’s a quick summary: Update…
Read More →Red Hat Enterprise Linux (RHEL) 8.2 will be GA soon, and brings new features and improvements to existing ones across the board. RHEL 8.2 includes installation enhancements and a better in place upgrade experience, to resource management for optimizing workloads on large systems, to new container tools to improve use of RHEL and the Red…
Read More →When choosing an operating system for running database workloads like Microsoft SQL Server, Red Hat Enterprise Linux (RHEL) offers several unique advantages. But why is this the case? When it comes to picking a database for your mission-critical application, performance is a crucial decision factor. In fact, delivering low latency, and high-throughput application responses comes…
Read More →As I was reading through the Red Hat Enterprise Linux 8 Beta release notes, one thing that caught my eye was that a session recording solution had been added to RHEL 8 Beta, which allows for users’ terminal sessions to be recorded and played back at a later time. Before coming to Red Hat…
Read More →Satellite and Ansible Tower are each powerful tools, and many customers utilize both of them. It is possible to integrate these tools and in part 1 of this series we covered how to configure Ansible Tower to pull a dynamic inventory of hosts from Satellite. One of Satellite’s features is the ability to provision new hosts, while…
Read More →Today, we’re pleased to announce that the latest beta version of the world’s leading enterprise Linux platform, Red Hat Enterprise Linux (RHEL) 8.2, is now available. Maintaining our commitment to a predictable, six-month release cadence for minor platform releases, RHEL 8.2 Beta is designed to make it easier for IT organizations to adopt new, production-ready innovations…
Read More →This week, Microsoft certified its SQL Server 2019 release for use with Red Hat Enterprise Linux 8. The new version of SQL Server adds Linux support for Replication and Change Data Capture (CDC), distributed transactions (MSDTC), machine learning (in Java, Python, and R), and data virtualization (Polybase) across structured and unstructured data sources. For RHEL 8,…
Read More →Last week we celebrated the 25th anniversary of Red Hat’s inaugural Halloween release. This week? We’ve got Red Hat Enterprise Linux 8.1 hitting the streets on schedule and ready to take on your toughest workloads. In RHEL 8.1 we have some new tools, live kernel patching, a new system role, and more. Here’s a quick…
Read More →There’s a bunch of interesting storage technology in Red Hat Enterprise Linux 8- including XFS reflink, enhancements to the Boom boot manager, Stratis file management (tech preview), and broader use cases for File System Direct Access to Persistent Memory Devices (FS-DAX). We’ll touch on all of them here, but let’s start with something even more…
Read More →This post is a technical deep dive into the vhost-user/virtio-pmd architecture targeting high performance userland networking using DPDK, building on the introduction provided by the solution overview post. It is intended for architects and developers who are interested in understanding the nuts and bolts of this architecture, and will be followed by a complementary hands on…
Read More →Starting with the beta release of Red Hat Enterprise Linux 8.1 Podman offers the possibility to migrate running containers from one system to another, without losing the state of the applications running in the container. With the help of CRIU Podman is able to offer stateful container migration for some containers. The following is an example how to use…
Read More →In today’s fast paced environment, system administrators don’t have time to manually make configuration changes across servers in their environment. Instead, they need tools that can help automate configuration management. Ansible is a powerful automation tool, and in Satellite 6.4 Red Hat introduced the ability to use Ansible for basic host configuration management. There are…
Read More →Red Hat Enterprise Linux 8 contains some important changes regarding the GNOME graphical interface and the default display server. If you are using a graphical desktop in RHEL 8, the most visible change will be that, by default, the GNOME Shell interface is used. This interface has a different appearance and operation compared to GNOME…
Read More →Red Hat OpenShift Container Platform 4 enables the mass production of container hosts at scale across cloud providers, virtualization platforms and bare metal. To create a true cloud platform, we had to tightly control the supply chain to increase the reliability of the sophisticated automation. Standardizing on Red Hat Enterprise Linux CoreOS (a variant of Red Hat Enterprise…
Read More →Today’s IT landscape is constantly changing. Legacy strategies of static, “stable,” image-based deployments and isolated patching may create brittle architectures, server sprawl, and highly restrictive platforms. We believe modern workloads should be scalable whether they’re deployed across bare metal, virtual, or cloud environments. To deliver performance, enhance reliability, and empower innovation, a holistic strategy is…
Read More →Most of my work involves collaborating with engineers and product managers to improve the performance, security, and manageability of workloads that are running on Red Hat Enterprise Linux (RHEL). The vast majority of those I encounter in my work are built on databases that are used to store the structured data associated with those workloads….
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