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Servers: Kubernetes and OpenStack

Submitted by Roy Schestowitz on Monday 4th of April 2022 10:53:32 PM Filed under
Server

  • Arturo Borrero Gonzalez: Wikimedia Toolforge and Grid Engine

    One of the most important and successful products provided by the Wikimedia Cloud Services team at the Wikimedia Foundation is Toolforge, a hosting service commonly known in the industry as Platform as a Service (PaaS). In particular, it is a platform that allows users and developers to run and use a variety of applications with the ultimate goal of helping the Wikimedia mission from the technical side.

    Toolforge is powered by two different backend engines, Kubernetes and Grid Engine. The two backends have traditionally offered different features for tool developers. But as time moves forward we’ve learnt that Kubernetes is the future. Explaining why is the purpose of this blog post: we want to share more information and reasoning behind this mindset.

  • Writing Kubernetes Operators in Java with JOSDK, Part 3: Implementing a controller | Red Hat Developer

    Java Operator SDK (JOSDK) is an open source project that aims to simplify the task of creating Kubernetes Operators using Java. The project was started by Container Solutions and Red Hat is now a major contributor.

    The first article in this series introduced JOSDK and gave reasons for creating Operators in Java. The second article showed how the quarkus-operator-sdk extension for JOSDK, together with the Quarkus framework, facilitates the development experience by managing the custom resource definition automatically. This article focuses on adding the reconciliation logic.

  • Real-time Analytics News for Week Ending April 2

    Canonical, the publisher of Ubuntu, announced the general availability of OpenStack Yoga on Ubuntu 22.04 Long Term Support (LTS) beta and Ubuntu 20.04 LTS. This new version of OpenStack (the 25th release) sets a foundation for next-generation, highly performant infrastructure using SmartNIC cards and integrating them with the Neutron Open Virtual Network (OVN) driver. With OpenStack network components running on SmartNICs, users benefit from lower latency, higher throughput, and better quality of services.

  • Zero-ops scaling Kubernetes storage with MicroK8s and OpenEBS Mayastor | Ubuntu

    Kubernetes is well-known as an open-source system for automating deployment, scaling and management of containerised applications. As such, it uses concepts such as Pods and Deployments to abstract away details regarding the underlying compute, networking and storage infrastructure.

    Storage is abstracted as PersistentVolumes (a volume that is provisioned in the underlying infrastructure) and PersistentVolumeClaims (a claim for a pod that uses a persistent volume) resources. Typically, running a Kubernetes cluster also involves running a CSI provisioner, which watches for PersistentVolumeClaims and automatically provisions the requested volumes.

    There are a large number of CSI drivers available. For example, if running Kubernetes on top of AWS, one would most likely use the aws-ebs-csi-driver. If running Kubernetes on-premises or in an OpenStack cloud, cinder-csi-driver would be more appropriate. If running on-premises and a Ceph cluster is available, ceph-csi could also be used.

    While this solves the storage problems for Kubernetes users, it moves the hurdle of managing everything to the administrators of the Kubernetes cluster, as well as the Kubernetes distribution.

»

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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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