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Red Hat

Oracle/IBM/Red Hat/Fedora Leftovers

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Red Hat
  • Fedora program update: 2020-48 – Fedora Community Blog

    Here’s your report of what has happened in Fedora this week. Elections voting is open through 3 December. Fedora 31 has reached end of life. EPEL 6 will reach end-of-life on Monday.

  • Oracle Linux 8: Oracle Ksplice made easy with free training

    This week’s training blog presents a set of free, short videos on using Oracle Ksplice on Oracle Linux 8. Oracle Ksplice allows you to install the latest kernel and key user-space security and bug fix updates while the system is running. You don’t need to coordinate with users to schedule system down time. You don’t need to stop running applications and you don’t need to reboot your systems to install kernel and user-space updates.

  • More for developers in the new Red Hat OpenShift 4.6 web console - Red Hat Developer

    Red Hat OpenShift 4.6 streamlines developer onboarding in the OpenShift web console, but that’s not all. This article details improvements and new features in the topology view and introduces OpenShift’s new, form-based approach to creating horizontal pod autoscalers and Helm charts. I also touch on application monitoring improvements and the latest updates for Red Hat OpenShift Pipelines, Red Hat OpenShift Serverless, and the Kiali Operator in OpenShift 4.6.

  • Log-On Wave for IBM Z Simplifies Administration and Operation of Virtualized Linux Infrastructures on IBM Z and LinuxONE

    Log-On Software (Log-On) an IBM Business Partner and developer of software solutions for IBM Z, has announced Log-On Wave for IBM Z, with general availability planned for January 2021.

    According to the company, Log-On Wave for IBM Z simplifies the administration and operation of virtual Linux servers running on IBM Z and IBM LinuxONE. The result is that IT organizations and service providers benefit from an intuitive graphical interface and intelligent functionality that improves productivity by simplifying administration, configuration and management and future-proofs operations by shielding complexity and enabling less experienced administrators to easily manage highly virtualized infrastructures.

  • Implementing storage: Compliance concerns for stateful financial services applications

    There’s little doubt that industry pressures have driven financial services firms to implement - and to continue to adopt - transformative solutions to maintain competitive advantages that help streamline operations and introduce new products.

    However, along with having to surmount technical issues, this industry presents special challenges regulatory and compliance concerns, in addition to technology considerations. Regulators play a major role in financial institutions, therefore, by necessity, banks create organizational models and processes to ensure that work is being delivered with the most minimal risk possible - and technology solutions must also adhere to this regulatory overlay.

  • Web interfaces for your syslog server - Blog - syslog-ng Community - syslog-ng Community

    This is the 2020 edition of my most read blog entry about syslog-ng web-based graphical user interfaces (web GUIs). Many things have changed in the past few years. In 2011, only a single logging as a service solution was available, while nowadays, I regularly run into others. Also, while some software disappeared, the number of logging-related GUIs is growing. This is why in this post, I will mostly focus on generic log management and open source instead of highly specialized software, like SIEMs.

  • Red Hat Quarkus Java stack moves to OpenShift

    Red Hat’s Quarkus framework for building Kubernetes-native Java applications is now included with the company’s OpenShift 4.6 open source container application platform, a step Red Hat describes as important in bringing Java into modern cloud-native application development.

    Previously supported in Red Hat Runtimes middleware, Quarkus now is natively integrated into OpenShift to provide for easier development, the company said. Developers can use familiar tools and do remote development on clusters via IDEs such as CodeReady Workspaces. Developers also can do serverless workload deployment and application storage management.

Red Hat/Fedora Leftovers

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Red Hat
  • Order from chaos: Red Hat and Starburst come together to simplify data access

    Enterprises rely on data to bring order to their organizations through automation, business process management and optimization, and increased intelligence that leads to better decision making. Yet data can be difficult to access, especially when it exists in many places.

    Today, data can be found in data centers, the cloud, vendor environments, and in traditional and software-defined data sources. Data ingested from the network edge may be aggregated at remote locations, transactional databases and data warehouses typically live in the core datacenter, while cloud-native applications generally store data in a private and/or public cloud. Data stores can be found in distributed, hybrid cloud, traditional, and modern applications—in many cases within the same organization.

  • Extending choice for more flexible, more secure open hybrid cloud: Red Hat Enterprise Linux on AWS Outposts

    Linux and open hybrid cloud go hand-in-hand - the power, flexibility and scale of hybrid cloud is made possible by the foundation of the Linux operating system. The world’s leading enterprise Linux platform, Red Hat Enterprise Linux (RHEL), already delivers this foundation across nearly every public cloud, server architecture and virtualized environment, but customer needs aren’t static. As new options for hybrid cloud computing emerge, we work to extend RHEL to meet these deployments, highlighted by support today for RHEL on AWS Outposts.

    While many organizations are able to reach outside of the confines of their datacenter to explore public and hybrid cloud options, some cannot due to unique security or compliance needs. Outposts bring the scale and power of Amazon Web Services (AWS) cloud to corporate datacenters in an appliance managed by AWS experts. Now, the organizations using Outposts can turn to RHEL to provide greater consistency across their IT estate, from traditional bare-metal servers, virtualized environments, private cloud infrastructure and their gateway to public cloud resources.


    Our goal with RHEL is to deliver an operating system that spans the open hybrid cloud, regardless of the path that an organization takes or the tools that they choose to use. With this new support for AWS Outposts, we have continued to drive customer choice in how they build hybrid cloud deployments with a single common platform in RHEL.

  • Run serverless functions, Kubernetes ingress controllers comparisons, and more industry trends |

    As part of my role as a principal communication strategist at an enterprise software company with an open source development model, I publish a regular update about open source community, market, and industry trends. Here are some of my and their favorite articles from that update.

  • Fedora 34 Change: Route all Audio to PipeWire (System-Wide Change)
  • Fedora 34 Might Try To Use PipeWire By Default To Replace PulseAudio/JACK

    Red Hat for several years now has been working on PipeWire to overhaul audio/video stream management on Linux while being able to fill the duties currently managed by the likes of PulseAudio and JACK and being engineered with Wayland and Flatpak security in mind among other modern Linux technologies. With Fedora 34 next spring they may try to ship PipeWire by default in place of JACK, PulseAudio, and even legacy ALSA.

    For a while now Fedora has offered PipeWire packages but not yet used by default when it comes to audio handling. A pending change proposal for Fedora 34 would now route all audio through PipeWire rather than the existing JACK and PulseAudio.

    With the proposed plan, Fedora 34 next spring with PipeWire would take over all desktop audio duties by default from PulseAudio. PipeWire provides a functionally compatible implementation of the PulseAudio daemon so existing Linux software should continue to work fine. Similarly, PipeWire would provide F34's JACK support for professional audio needs. For legacy ALSA clients, an ALSA plug-in for PipeWire allows routing audio through it as well.

IBM/Red Hat/Fedora: Trinity Guard, Flatpak, Fedora Program, OpenShift

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Red Hat
  • Trinity Guard Unveils New Tools for Linux, Db2 for i - IT Jungle

    Trinity Guard is on the move. The Houston, Texas, based security software company, which is the spiritual successor to the PentaSafe products, is rolling out a full auditing solution for Linux. It’s also developing a Linux version of its security management tool, TGCentral, with an AIX version up next. Plus it’s months away from releasing an encryption solution for Db2 for i.

    2020 has not been easy for anyone, but it’s not stopping the folks at Trinity Guard from moving forward on its roadmap items. Near the top of that list is increased support for running on Linux, which has become the dominant operating system for business servers around the world.

    The new TGAudit for Linux solution provides a full-fledged auditing solution for a variety of Linux environments, including Linux running on Power, X86, and ARM servers. The offering will interrogate a customer’s Linux environment and return a report that shows exactly how its security settings are configured, says Randy Bowie, the vice president of engineering at Trinity Guard.

  • Scaling Flathub 100x – Alexander Larsson

    Flatpak relies on OSTree to distribute apps. This means that flatpak repositories, such as Flathub, are really just OSTree repositories. At the core of an OSTree repository is the summary file, which describes the content of the repository. This is similar to the metadata that “apt-get update” downloads.

    Every time you do an flatpak install it needs the information in the summary file. The file is cached between operations, but any time the repository changes the local copy needs to be updated.

    This can be pretty slow, with Flathub having around 1000 applications (times 4 architectures). In addition, the more applications there are, the more likely it is that one has been updated since the last time which means you need to update.

  • Keystone and Cassandra: Parity with SQL | Adam Young’s Web Log

    Look back at our Pushing Keystone over the Edge presentation from the OpenStack Summit. Many of the points we make are problems faced by any application trying to scale across multiple datacenters. Cassandra is a database designed to deal with this level of scale. So Cassandra may well be a better choice than MySQL or other RDBMS as a datastore to Keystone. What would it take to enable Cassandra support for Keystone?

    Lets start with the easy part: defining the tables. Lets look at how we define the Federation back end for SQL. We use SQL Alchemy to handle the migrations: we will need something comparable for Cassandra Query Language (CQL) but we also need to translate the table definitions themselves.

  • Fedora program update: 2020-47 – Fedora Community Blog

    Here’s your report of what has happened in Fedora this week. Elections voting is open through 3 December. Fedora 31 will reach end-of-life on Tuesday. EPEL 6 will reach end-of-life on 30 November.

  • Testing the reliability of Red Hat OpenShift Container Storage on VMWare Distributed vSAN HA

    Storage reliability plays a critical role in managing business-critical applications. A reliable storage solution can help enterprises avoid unnecessary downtime. With Red Hat OpenShift Container Storage continuing to evolve, this blog post shows how we verified the combined reliability of OpenShift Container Storage and Red Hat OpenShift Container Platform when it comes to high availability (HA) in a hardware configuration supported out of the box (mentioned in the Red Hat OpenShift Container Storage Planning Guide). We performed active/passive and active/active site configuration tests.

IBM/Red Hat/Fedora Leftovers

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Red Hat
  • Red Hat Drives Hybrid Cloud Ubiquity with OpenShift Innovation Across Architectures, Applications and Infrastructure

    Red Hat, Inc., the world's leading provider of open source solutions, today announced new capabilities and features for Red Hat OpenShift, the industry’s leading enterprise Kubernetes platform. From updates to OpenShift Serverless for enhanced developer efficiency to extended support across architectures, Red Hat OpenShift helps fuel enterprise innovation across the hybrid cloud backed by Red Hat’s expertise and commitment to production-ready open source.

  • Release Cockpit Composer 26

    We are happy to announce the release of cockpit-composer 26. This release has no major new features, but contains useful fixes.

    Below you can find the official change log, compiled by Jacob Kozol. Everyone is encouraged to upgrade!

  • Release Koji Osbuild 3

    We are happy to announce that we released koji-osbuild 3, our new project to integrate osbuild-composer with koji, the build and tracking system primarily used by the Fedora Project and Red Hat.

    Below you can find the official change log, compiled by Christian Kellner.

  • Release of osbuild-composer 25

    We are happy to announce that we released osbuild-composer 25. It now supports building RHEL 8.4.

    Below you can find the official change log, compiled by Ondřej Budai. Everyone is encouraged to upgrade!

  • Acer Aspire Switch 10 E SW3-016's (and SW5-012's) horrible EFI firmware

    Depending on what OS the BIOS thinks it is booting it renames one of these 2 to _HID. This is weird given that it will only boot if EFI/Microsoft/Boot/bootmgfw.efi exists, but it still does this. Worse it looks at the actual contents of EFI/Boot/bootx64.efi for this. It seems that that file must be signed, otherwise it goes in OS unknown mode and keeps the 2 above DSDT bits as is, so there is no _HID defined for the wifi's mmc controller and thus no wifi. I hit this issue when I replaced EFI/Boot/bootx64.efi with grubx64.efi to break the bootloop. grubx64.efi is not signed so the DSDT as Linux saw it contained the above AML code.

  • IBM Advance Toolchain for Linux on Power 12.0-4 released!

    The IBM Advance Toolchain for Linux on Power is a set of open source development tools (compiler, debugger and profiling tools) and runtime libraries that allow users to take leading edge advantage of IBM’s latest POWER® hardware features on Linux®.

IBM/Red Hat Leftovers

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Red Hat
  • How to use Ansible to configure Vim | Enable Sysadmin

    Using this playbook, you can quickly deploy and update your Vim configuration using Infrastructure as Code principles.

  • Finding common ground through open source and conversation

    As Mark Twain once said, "let us make a special effort to stop communicating with each other, so we can have some conversation." We are bombarded with communications all day, from social media and video chats to advertisements and the news. But how much of that communication do you walk away from feeling rejuvenated or inspired?

    For the last five years, Red Hat has produced documentary films as part of our Open Source Stories series, covering education, healthcare, agriculture, the arts, citizen science, sustainability, and more. We’ve delved into stories about how open source can create meaningful change. Open Source Stories began as a conversation so it’s only fitting that in its latest evolution we’re focused on just that, conversation.

    Launching today, "Common Connections," is a series of conversations between makers featured in our films that have never met before. Scholars, CEOs, educators, and engineers will come together to find the common threads in their work, explore the potential for future open source innovation and build unexpected connections.

  • What’s new in the world of ChRIS?

    In the spring of 2018, Red Hat, together with the Massachusetts Open Cloud (MOC) and the Fetal-Neonatal Neuroimaging and Developmental Science Center (FNNDSC) at Boston Children’s Hospital, announced a collaboration to further develop and deploy the ChRIS Research Integration System. ChRIS was originally developed by the FNNDSC’s Advanced Computing Group to bring sophisticated (but often complex and hard-to-use) medical imaging, such as MRI and CT scans, analysis into the front lines to better inform clinical care. It is built on Red Hat OpenShift and Red Hat OpenStack. ChRIS has since evolved into a powerful general purpose, open source distributed data and computation platform.

  • A guide to security technologies in Red Hat Enterprise Linux

    Red Hat has a long history of adopting and creating security technologies to harden our core platforms, such as Red Hat Enterprise Linux (RHEL). When other platforms or layered products are used with RHEL, they inherit many of these protections due to that foundation.

  • Smart Talks podcast: how can you address racial injustice with technology? [Ed: The company that helped purge races wants “Inclusive Naming Initiative”]

    A person who grew up in the tree-lined suburbs of Los Angeles may not know what it’s like to grow up in the Projects of Compton. An impassioned politician speaking on the topic of armed forces may not know what it’s like to board a military transport aircraft and be deployed to an area of deadly violence. In order to better understand experiences you have not lived through, you first need to start listening to those who have.

  • IBM, Red Hat, VMware & Others Form The Inclusive Naming Initiative

    The Inclusive Naming Initiative has been formed by various industry players to make "consistent, responsible choices to remove harmful language" from software.

  • Common Connections: Creating the Classroom
  • REST API and OpenAPI: It’s Not an Either/Or Question

Red Hat: Ceph Storage 3, OpenShift and Eradicating Words

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Red Hat
  • Red Hat Ceph Storage 3 end of life extended to February 28, 2021

    Customers running Red Hat Ceph Storage 3 are going to have a little more time to plan and prepare for their upgrade.

    Earlier this year we announced several product life cycle changes to help take the pressure off organizations focused on near-term operations. Our priority was to provide extensions to our products that would have had an end of maintenance (EOM) phase in the near future so our customers are not forced to perform upgrades or migrations while reeling from the impact of COVID-19.

    The end of life date we published for Ceph Storage 3 in April has been extended from December 1, 2020 to February 28, 2021 as a customer courtesy. This will allow an additional period for you to prepare and carry out your upgrade to Red Hat Ceph Storage 4, which is to be supported through the end of January 2023.

  • Red Hat tunes up RHEL and OpenShift for life on computing's edge | ZDNet

    At the virtual KubeCon, leading Linux and cloud company Red Hat showed up new edge computing capabilities for Red Hat Enterprise Linux (RHEL) and Red Hat OpenShift, its Kubernetes platform. With these, RHEL will be more stable than ever in even smaller hardware footprints. Meanwhile, OpenShift will support a remote worker node architecture to help deliver Kubernetes to space-constrained and remote deployments.

  • An update on Red Hat's conscious language efforts [Ed: It's outsourced to Microsoft again... for censorship (never mind their own history)]

    In June, I committed to holding the space to listen, learn and have important conversations about the systemic injustices and racism that exist in our society. As part of that work, Red Hat announced our intention to remove harmful language from our code and documentation. While that marked the beginning of a focused effort, Red Hatters have been laying the groundwork for several years. A grassroots team had been working on developing guidelines about using language consciously and inclusively for some time. In June, we started working with that group to catalyze the conscious language guidelines into an action plan for change. We expected this would be a significant amount of work, and a long term effort to effect real change, so we thought it would be useful to share a progress update.

IBM/Red Hat/SUSE Leftovers

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Red Hat

  • Secure your containers with SELinux |

    When things aren't working correctly in your Linux environment, the easiest thing to do is disable Security-Enhanced Linux (SELinux). Things suddenly begin to work, and you forget about it—but this is a common pitfall that means you've lost a very powerful security tool.

    Threats are rising alongside the rise of containers, microservices, and distributed architecture. This is due to an old, well-known issue: velocity. The advantage of containers is that they enable you to move fast, do more, and change quickly. This means container adoption has gone off the roof, but the speed it affords also means you will encounter more issues and vulnerabilities. This happens naturally when you're doing more things faster and quicker.

  • How to fix Linux EFI secure-boot shim bootloop issue - Hans' hacking log — LiveJournal

    How to fix the Linux EFI secure-boot shim bootloop issue seen on some systems.

    Quite a few Bay- and Cherry-Trail based systems have bad firmware which completely ignores any efibootmgr set boot options. They basically completely reset the boot order doing some sort of auto-detection at boot. Some of these even will given an error about their eMMC not being bootable unless the ESP has a EFI/Microsoft/Boot/bootmgfw.efi file!

    Many of these end up booting EFI/Boot/bootx64.efi unconditionally every boot. This will cause a boot loop since when Linux is installed EFI/Boot/bootx64.efi is now shim. When shim is started with a path of EFI/Boot/bootx64.efi, shim will add a new efibootmgr entry pointing to EFI/fedora/shimx64.efi and then reset. The goal of this is so that the firmware's F12 bootmenu can be used to easily switch between Windows and Linux (without chainloading which breaks bitlocker). But since these bad EFI implementations ignore efibootmgr stuff, EFI/Boot/bootx64.efi shim will run again after the reset and we have a loop.

  • How security and compliance automation can help achieve a more secure hybrid cloud

    In hybrid cloud environments, where workloads are deployed in physical hosts, virtual machines and containers across on-premise and cloud environments, security becomes more and more complex. As a part of the AnsibleFest Virtual Experience, Lucy Kerner, a Red Hat security strategist and evangelist, and Justin Lacey, a Red Hat solution architect, led the breakout session "Implementing a secure hybrid cloud using security and compliance automation." The session highlighted a combination of Red Hat technologies that can help simplify and improve security and compliance in a hybrid cloud environment at scale using automation. Missed out on this session? We’re recapping some key points here.

  • Renewing my thrill at work with Ansible | Enable Sysadmin

    Ansible empowered me to utilize my own technical strengths and passion to improve processes and enjoy my time.

  • Using Multus and DataVolume in KubeVirt - Red Hat Developer

    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.


    As a cloud-native virtual machine management framework, KubeVirt adopts cloud-native technologies alongside its own inventions. As a result, KubeVirt APIs and controllers support flexible and scalable virtual machine configurations and management that can integrate well with many technologies in the cloud-native ecosystem. This article focused on KubeVirt’s network and storage mechanisms. We look forward to sharing more exciting features in the future, including KubeVirt’s mechanisms for handling CPU, memory, and direct device access.

  • Addressing Modern IT Infrastructure Management with SUSE Manager and SUSE Manager for Retail

    Applications hide in containers, systems hide in other systems, new configurations appear and disappear with a single mouse click, and every file is a potential threat. It is no wonder that CIOs and IT managers are looking for new tools and a new approach that will bring harmony, safety and economy to precious IT assets in changing times. Welcome to the new world of IT infrastructure management.

  • SUSE Manager certified on Nutanix Acropolis Hypervisor

    Nutanix provides a fully software-defined stack that integrates compute, virtualization, storage, networking, and security to power any application at any scale. Nutanix Acropolis Hypervisor is their enterprise-ready hypervisor, offering integrated virtualization, app mobility, management, operational insights, and security.

    We are very excited that SUSE Manager is now certified on Nutanix Acropolis Hypervisor. As part of the Nutanix Ready Program SUSE Manager is now a recommended and trusted application. With this certification SUSE Manager can run confidently on Nutanix infrastructure.

Red Hat/Fedora Leftovers

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Red Hat
  • Fedora 33 : Smokeping tool.

    Smokeping is a latency measurement tool. It sends test packets out to the net and measures the amount of time they need to travel from one place to the other and back. SmokePing consists of a daemon process which organized the latency measurements and a CGI which presents the graphs.

  • Red Hat, DarwinAI To Bring COVID-Net Screening Tool To Hospitals

    Red Hat and DarwinAI have joined hands to accelerate the deployment of COVID-Net—a suite of deep neural networks for COVID-19 detection and risk stratification via chest radiography—to hospitals and other healthcare facilities.

  • You call that DevSecOps? Why your DevSecOps practice may be falling short

    The current state of application development is interesting and also troublesome. Modern and cloud scale app dev has adopted DevOps, where the tools are maturing rapidly. DevOps has given organizations a methodology for meeting business needs more quickly, but at what cost? The cost can be seen, and often measured, in increased complexity and reduced security. This price tag is too high and many are not, and should not, be willing to pay it.

  • Event-driven serverless applications with Camel K - Red Hat Developer

    DevNation Tech Talks are hosted by the Red Hat technologists who create our products. These sessions include real solutions plus code and sample projects to help you get started. In this talk, you’ll learn about event-driven serverless applications and Apache Camel K from Nicola Ferraro, Luca Burgazzoli, and Burr Sutter.

    Event-driven serverless applications really rock these days. Knative and Kubernetes offer nice primitives for creating them, but if you’ve ever tried going beyond the “Hello World” example, you know that writing real-life applications is much harder than expected.

IBM/Red Hat Leftovers

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Red Hat
  • Using an Ansible playbook to manage workstation and server updates | Enable Sysadmin

    In part two of this series on writing playbooks, we examine updates for servers and workstations. This playbook manages updates differently depending on the role the systems play on the network.

  • Introducing Quarkus on Red Hat OpenShift

    Red Hat is committed to the future of Java. It remains the most popular programming language runtime for enterprise application development, with nearly two-thirds of developers globally self-identifying as "moderate to heavy" users of Java. Java has consistently been in the top three programming languages on the TIOBE ratings for the past eighteen years. Safe to say - despite developers having more choice and easier access to new programming languages than ever before, Java remains the de facto standard for building business-critical applications. At Red Hat, our goal is to continue to support Java developers by offering new ways for Java developers to continue innovating.

  • Introducing using OpenShift Serverless for event-driven applications

    The steady uptick in serverless adoption brings benefits to developers as well as businesses at-large. With serverless, developers can focus more on delivering value, driving greater innovation, and a faster iteration of services and applications to the larger organization. This is why Red Hat is consistently updating OpenShift Serverless with new features, such as Eventing and Functions.

    By leveraging serverless, we lower the barrier of Kubernetes adoption since most of its APIs target IT operations teams, not developers. OpenShift Serverless, based on the upstream Knative project, extends Kubernetes providing developer-friendly constructs, helping to solve application development problems by using modern patterns, like request-driven autoscaling and event-driven computing. The resulting applications will automatically scale up or down based on need and use, saving time and resources.

  • Red Hat broadens the scope for cloud-native, Kubernetes management with greater observability and automation

    Red Hat Advanced Cluster Management for Kubernetes is designed to help organizations further extend and scale Red Hat OpenShift with enterprise-grade management capabilities across hybrid and multicloud environments. It enables IT teams to manage multiple Kubernetes clusters and automate multi-cluster application deployments across hybrid clouds while driving policy compliance and expanded governance. Today marks the general availability of Advanced Cluster Management for Kubernetes 2.1, which extends management capabilities into established environments and helps to more proactively cultivate cluster performance for optimized cloud-native management.

  • Red Hat Enterprise Linux 8.3 is ready for the edge

    Like it or not, organizations are moving more and more workloads to the edge. The benefits of moving workloads closer to the users that depend on them are undeniable. So are the downsides. However, with Red Hat Enterprise Linux (RHEL) 8.3 we've added several features to help admins and organizations cope with the challenges of edge computing by simplifying image creation, reducing update sizes and fending off unnecessary downtime.

  • Use cases for the IBM Social Campaign Manager

    Most people have been presented with a 20+ question with 5 optional answers per question survey at one time or another. The applications used to create these surveys typically provide the same functions, and they produce what amounts to a digital representation of a paper-based survey shared in an email. Presenting 100+ radial buttons to incentivize participants to share valuable feedback is not ideal, is it?

    Assuming that enough people do respond to these surveys, they are typically sufficient to collect quantitative statistics. However, they don’t probe for context, intent, or the emotion behind the participants responses. They don’t solicit feedback in the way we naturally would if we were able to chat with the participant directly.

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    Linux, of course, has to keep track of all the applications and daemons running on your computer. One of the ways it does this is by maintaining the process table. This is a list of structures in kernel memory. Each process has an entry in this list that contains some information about it. There isn’t a great deal in each of the process table structures. They hold the process ID, a few other data items, and a pointer to the process control block (PCB) for that process. It’s the PCB that holds the many details Linux needs to look up or set for each process. The PCB is also updated as a process is created, given processing time, and finally destroyed.

  • How to Setup a Firewall with UFW on Debian 10 Linux - Linux Concept

    Nowadays, a Firewall is an essential utility and property of any system for security; by default Debian Operating system having a firewall configuration tool named UFW (Uncomplicated Firewall). UFW is a user-friendly front-end tool to manage iptables firewall rules. It provides you more straightforward methods to manage iptables as the name of this tool start from Uncomplicated.

  • How to Use arping Command in Linux – Linux Hint

    To a network administrator, the ARP protocol may sound familiar. ARP is a protocol that Layer 2 devices implement for discovering and communicating with each other. The arping tool works using this protocol. Now, why would you need arping? Imagine you are working with a small office network. Using the classic ping command to ping hosts to verify their availability is very tempting, right? Well, if you are using the ICMP protocol, then you are actually performing ARP requests for probing devices in the network. This is where the arping tool comes in. Like ping, arping pings network hosts using network layer ARP packets. This method is useful for hosts that do not respond to Layer 3 and Layer 4 ping requests. This article shows you how to use arping command in Linux.

  • How to configure YAML schema to make editing files easier - Red Hat Developer

    YAML is a friendly data serialization standard that works with all programming languages. While configuration files are often defined in YAML, it can even be used as a programming language, like the workflow language at Google, or Apache Camel K. It has the advantage of not having any braces, making it lightweight visually. One of the drawbacks is that editing YAML files may not always be easy. For instance, writing a tag at the wrong indentation level can be hard to detect. To help with editing, it is possible to provide a YAML schema that can be leveraged by a large set of integrated development environments (IDEs). Unfortunately, this practice is not widespread. Consequently, users waste time searching for a missing or extra space and browsing documentation. In this article, you will discover the benefits of providing a YAML schema and how to make it consumable for all your users, making it easier to edit YAML files.

  • How to connect and share data between two Linux systems

    I got an interesting request (not from singles in my area). One of my readers asked me, how does one go about connecting two Linux boxes - I presume for sharing purposes. This is a topic I've touched upon frequently, but often indirectly. As Commandant Lasard from Police Academy would say, there are many, many, many, many different ways to do this. So perhaps it's time for a proper tutorial. I will show you several common, robust ways to have two Linux systems communicate over network. We'll do it on the command line, then move up to file managers, and finally, also perform a remote data backup using a friendly GUI tool. Let's start.

  • How to manage user passwords on Linux

    If you’re a Linux admin, you probably take care of any number of servers, all of which contain numerous users. Those users log in via various means or protocols, such as SSH, FTP, HTTP. In order to successfully log in, those users have to have—passwords.

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    A good patch management plan always includes a good patch backout plan.

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