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Red Hat Leftovers

Submitted by Roy Schestowitz on Thursday 23rd of January 2020 03:08:56 PM Filed under
Red Hat
  • Using Kubernetes ConfigMaps to define your Quarkus application’s properties

    So, you wrote your Quarkus application, and now you want to deploy it to a Kubernetes cluster. Good news: Deploying a Quarkus application to a Kubernetes cluster is easy. Before you do this, though, you need to straighten out your application’s properties. After all, your app probably has to connect with a database, call other services, and so on. These settings are already defined in your application.properties file, but the values match the ones for your local environment and won’t work once deployed onto your cluster.

    So, how do you easily solve this problem? Let’s walk through an example.

  • Deploy PostgreSQL in OpenShift backed by OpenShift Container Storage

    PostgreSQL has been the fastest growing open source RDBMS over the past decade. It has a solid community and has been around for many years adding more and more features. PostgreSQL features ACID (Atomicity, Consistent, Isolation and Durability) properties. It has indexes (primary/unique), updatable views, triggers, foreign keys (FKs) and even stored procedures (SPs). PostgreSQL also features built-in replication via shipping the WAL (Write Ahead Log) to a number of different database replicas. These replicas can be used in read-only mode. It also has a synchronous replication, where the master waits for at least one replica to have written the data before ACKing.

  • Convert2RHEL: How to update RHEL-like systems in place to subscribe to RHEL

    Convert2RHEL: How to update RHEL-like systems in place to subscribe to RHEL

    Over the years, one of the requests Red Hat has gotten over and over again is for help converting other Linux systems to Red Hat Enterprise Linux, in place. We're happy to announce the availability of Convert2RHEL in EPEL. This is a tool that can be used for the conversion of other-than-RHEL systems to RHEL to allow Red Hat to provide support for them. In this post we'll look at systems that can be converted with Convert2RHEL, some of its limitations, and some basic usage.

    [...]

    We recommend that customers who want to convert non-RHEL systems to RHEL set up a consulting engagement with Red Hat's Consulting Services. However, we are making the tool available as a self-service option for those customers who wish to try to convert their systems on their own. Naturally, we strongly recommend having tested backups for any system that you are looking to run a conversion on.

    If you have a support agreement with another vendor, it's our recommendation that you maintain that agreement while working on the transition to RHEL, as we do not provide support for non-RHEL systems. Note that we cannot support "hybrid" systems that have a mix of RHEL and other (e.g. CentOS) packages.

    Once a system has been converted to RHEL via the Convert2RHEL tool, or if you do a clean install of RHEL, then it can be eligible for support with a Red Hat Enterprise Linux subscription.

  • Culture of innovation and collaboration: Open Data Hub

    Red Hat is continually innovating and part of that innovation includes researching and striving to solve the problems our customers face. That innovation is driven through the Office of the CTO and includes Red Hat OpenShift, Red Hat OpenShift Container Storage and innovative projects such as the Open Data Hub. We recently interviewed Juana Nakfour, Senior Software Engineer in the AI Center of Excellence for the office of the CTO at Red Hat, about this very topic.

    [...]

    Open Data Hub is a meta-Operator that has a lot of tools packaged together that can easily install an end-to-end AI/ML platform at once. Just the fact that they're modular and all in together, connected, means you can use module A, together with module P together with module E, which makes it easier for data scientists and engineers to develop faster.

  • Introducing the syslog-ng-stable RPM repositories

    For many years – especially after syslog-ng changed to a rolling release model – users I talked to asked for up-to-date RPM packages. They also asked for a separate repository for each new release to avoid surprises (a new release might accidentally or even intentionally break old features) and to be able to use a given release if they want to (“if it works, do not fix it”). That is how my unofficial RPM repositories were born.

    Recently some long-time syslog-ng users and members of the Splunk community started to ask for a repository, which always has the latest syslog-ng version available. Most users still prefer to use separate repositories. That is how I came up with the idea for the syslog-ng-stable repository: I push a new release to this new rolling repo only after at least a week of delay. This is enough to spot most major problems. Once the delay is over and everything seems to be OK, I can push the latest release to the syslog-ng-stable repo. If there is a bigger problem, I can skip the release in the stable repo or wait for a fix.

  • IBM snaps out of its revenue doldrums, breaking a five-quarter losing streak in Q4

    International Business Machines is living a case study of a large, established company vying to transform. Over the last decade, the technology elder has struggled to move into areas like cloud and AI. IBM has leaned on a combination of its own R&D abilities and deep pockets to push into modern markets, but has struggled to turn them into revenue growth.

    At one point, Big Blue posted 22 sequential quarters of falling revenue, a mind-boggling testament to how hard it can be to turn around a juggernaut. More recently, IBM shrank for another five consecutive quarters, a streak it broke with yesterday’s news that it had beat analyst expectations.

  • MontaVista Software Announces Commercial Support for CentOS

    MontaVista® Software, LLC, extends its coverage of non-MontaVista Linux distributions by announcing commercial support for CentOS. In addition to Clear Linux OS commercial support that was announced in 2019 (http://bit.ly/302qQMB), MontaVista extends its commitment to the embedded Linux community with CentOS support and maintenance programs.

»

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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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