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IBM/Red Hat/Fedora Leftovers

Submitted by Roy Schestowitz on Friday 22nd of April 2022 12:21:28 AM Filed under
Red Hat
  • Another tale of a rawhide compose bug – Kevin's musings

    Astute observers will have noticed recently that Fedora rawhide composes stopped after 2022-04-13 and didn’t resume until 2022-04-19. A particularly odd bug was to blame. This is the story of that bug and my investigations of it.

    A bit of background first on how nightly images are made currently. There’s a cron job that calls a script (called nightly.sh) in the pungi-fedora pagure.io git repo. It does a number of small associated things (like sending message bus messages of status, sending report emails, copying results around, etc) but the big thing it does is to call pungi. pungi in turn looks at it’s config (in that same pungi-fedora repo) and does all the heavy lifting of the compose, calling mostly out to koji to do things, but also doing some things locally. For images, pungi calls koji with some parameters (use this repo and name for kickstart file, use these compose repos for packages, etc). koji then calls different tools depending on what the image is. For livemedia the tool is livemedia-creator (in the lorax package), for qcow2/raw images it calls ImageFactory/oz to do the actual image build on a builder.

  • Tuned – Automatic Performance Tuning of CentOS/RHEL Servers

    To maximize the end-to-end performance of services, applications and databases on a server, system administrators usually carry out custom performance tunning, using various tools, both generic operating system tools as well as third-party tools. One of the most useful performance tuning tools on CentOS/RHEL/Fedora Linux is Tuned.

  • Creating cgroups in RHEL/CentOS 7

    cgroups allow for system resources to be limited for certain user’s processes, which are defined in configuration files. This is useful e.g. if you wish to limit a compiler’s maximum memory usage and avoid it grinding the system to a halt.

  • New Mindsets For Digital Transformation

    I recently participated in a Red Hat online customer event that changed my thinking about how digital transformation takes place, and how digital capabilities can transform customer events. It was an intentionally intimate affair—two discussion leaders, one facilitator, and about ten customer executives. The format was an interesting one too—first a “fireside chat” with me, George Westerman of MIT, and Mike Walker, the facilitator, who runs Red Hat’s Open Innovation Labs. Then we moved into a “Lean Coffee” session, in which participants suggest topics, talk about them for five minutes, and vote whether to continue the same topic for another five minutes or move to another. It’s a lively format that never gets boring. And the graphic facilitator Tricia Walker annotated the proceedings (see photo).

  • Command Line Heroes: Season 9: Menace in the Middle

    Whether it's called "man in the middle" or "meddler in the middle", these types of attacks target communications that we assume are safe. This episode uncovers how complex this malicious form of interception has become.

  • Red Hat Exec: Training Investments Reflect ‘Renewed Emphasis On Partners’

    In response to past issues raised by partners, IBM subsidiary Red Hat is investing in improvements to its training and certification offerings for partners, including free access to a range of training courses, discounts on certification exams and a new dynamic skills path experience to help with education goals, job roles and IT challenges.

  • Red Hat cloud services deliver time to value and enhance developer and operator efficiency

    In this Techaisle Take analysis, I will discuss which customer challenges Red Hat is addressing with its cloud services, market differentiation, especially VMware, and why its significant value lies in providing a consistent full-stack development and operational experience.

»

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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.

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