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IBM/Red Hat Leftovers

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Red Hat
  • Use automated snapshots to defend against ransomware with NetApp and Red Hat Ansible Automation Platform

    In this installment of our digital transformation journey with fictional company Davie Street Enterprises, learn how Red Hat Ansible Automation Platform and NetApp's ONTAP solution can come together to help you prevent ransomware attacks.

  • Understanding and verifying security of Diffie-Hellman parameters

    When we use machines to communicate over the internet, we often want those exchanges to be secure: protected against modification in transit, scrambled in a way that only we and the intended recipient can read it, and linked with a specific identity (a specific server or person) so that we know who we are communicating with.

    While there are multiple protocols that provide assurances about security, the good ones require that the parties agree on some shared secret before any user data can be encrypted and integrity protected.

    There are two methods commonly used to agree on shared secrets: have one party use some long-term asymmetric key to encrypt the secret and send it to the owner of the key (like in an RSA key exchange), or have both parties exchange messages that contribute to the computed shared secret (what we call Diffie-Hellman key exchange).

    The security of both methods depends on picking numbers that are just right. In one variant of the Diffie-Hellman key exchange one of the parameters needs to be a large prime number. Because the key exchange is vulnerable to attacks if the number is not prime, or not a special kind of prime, the Red Hat Crypto Team has developed a tool to provide mathematical proof that the numbers we distribute are indeed primes of that special type and thus aren’t the weakest link in the security of systems that depend on them. We’ve also published a set of primality certificates to allow for quicker verification of their primality.

    At the end of this article you can find instructions on how to use this tool, called ecpp-verifier, to verify the primality certificates or how to check that all the primes used by OpenSSH have matching certificates.

  • Build and deploy microservices with Kubernetes and Dapr | Red Hat Developer

    Dapr (Distributed Application Runtime) provides an event-driven, portable runtime for building distributed microservices. The project is useful for both stateless or stateful applications on the cloud and at the network edge. A new open source project from Microsoft, Dapr embraces a diversity of languages and development frameworks. The project is a natural fit for Kubernetes and Red Hat OpenShift. This article shows you how to install Dapr and walks you through the process of building a sample application on Kubernetes.

  • A Java developer's guide to Quarkus |

    Serverless architecture has already become an efficient solution to align overprovisioning and underprovisioning resources (e.g., CPU, memory, disk, networking) with actual workloads regardless of physical servers, virtual machines, and cloud environments. Yet, there is a concern for Java developers when choosing new programming languages to develop serverless applications. The Java framework seems too heavyweight and slow for serverless deployment on the cloud, especially Kubernetes.

    What if you, Java developer, could keep using the Java framework to build traditional cloud-native microservices as well as new serverless functions at the same time? This approach should be exciting since you don’t have to worry about a steep learning curve for new serverless application frameworks.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.