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Traefik, Docker and dnsmasq to simplify container networking

Traefik, Docker and dnsmasq to simplify container networking

Categories: Containers Orchestration, Infrastructure, Tech Radar | Tags: Gatsby, JAMstack, Linux, Docker, Network

Good tech adventures start with some frustration, a need, or a requirement. This is the story of how I simplified the management and access of my local web applications with the help of Traefik and…

David WORMS

By David WORMS

Nov 17, 2022

WasmEdge: WebAssembly runtimes are coming for the edge

WasmEdge: WebAssembly runtimes are coming for the edge

Categories: Containers Orchestration, Adaltas Summit 2021, Infrastructure, Tech Radar | Tags: JAMstack, Linux, Docker, Rust Lang, WebAssembly

With many security challenges solved by design in its core conception, lots of projects benefit from using WebAssembly. WasmEdge runtime is an efficient Virtual Machine optimized for edge computing…

Guillaume BOUTRY

By Guillaume BOUTRY

Sep 29, 2022

Framework laptop with NixOS, a user feedback

Framework laptop with NixOS, a user feedback

Categories: Learning, Tech Radar | Tags: CLI, DevOps, Learning and tutorial, Linux, Packaging, NixOS, Open source

A new job comes with a new laptop. As such, I was given a Framework Laptop DIY Edition with the objective to install and configure it entirely with NixOS. I will share my first impressions after…

Carlos JESUS CARO

By Carlos JESUS CARO

Aug 22, 2022

NixOS: Enabling LXD virtual machines using Flakes

NixOS: Enabling LXD virtual machines using Flakes

Categories: Hack, Learning | Tags: GitHub, Learning and tutorial, Linux, LXD, Packaging, VM, NixOS, Open source

Nixpkgs is an ever-increasing collection of software packages for Nix and NixOS. Even with more than 80,000 packages, you easily run in a situation where there is a functionality that is not yet…

Kellian COTTART

By Kellian COTTART

May 13, 2022

Nix package creation: install a not yet supported font

Nix package creation: install a not yet supported font

Categories: Hack | Tags: Learning and tutorial, Linux, Packaging, GitOps, NixOS, Open source

The Nix packages collection is large with over 60 000 packages. However, chances are that sometimes the package you need is not available. You must integrate it yourself. I needed for some fonts which…

David WORMS

By David WORMS

Mar 29, 2022

Reliable and reproducible Linux installation with NixOS

Reliable and reproducible Linux installation with NixOS

Categories: Infrastructure, Learning | Tags: Linux, Packaging, VM, NixOS, TDP

When using an operating system, upgrading packages or installing new ones are common tasks that introduce the risk of affecting the stability of the system. NixOS is a Linux distribution that ensures…

Florent MOUAFFO

By Florent MOUAFFO

Feb 8, 2022

Nix introduction, main concepts and commands

Nix introduction, main concepts and commands

Categories: Infrastructure, Learning | Tags: Arch Linux, CentOS, Linux, OS X, Packaging, Ubuntu, NixOS, TDP

Nix is a functional package manager for Linux and other Unix systems, making the management of packages more reliable and easy to reproduce. With a traditional package manager, when updating a package…

Florent MOUAFFO

By Florent MOUAFFO

Feb 1, 2022

Desacralizing the Linux overlay filesystem in Docker

Desacralizing the Linux overlay filesystem in Docker

Categories: Containers Orchestration, Infrastructure | Tags: DevOps, File system, Linux, Docker

Overlay filesystems (also called union filesystems) is a fundamental technology in Docker to create images and containers. They allow creating a union of directories to create a filesystem. Multiple…

David WORMS

By David WORMS

Jun 3, 2021

Install and debug Kubernetes inside LXD

Install and debug Kubernetes inside LXD

Categories: Containers Orchestration | Tags: Debug, Linux, LXD, Container, Docker, Kubernetes, Node

We recently deployed a Kubernetes cluster with the need to maintain clusters isolation on our bare metal nodes across our infrastructure. We knew that Virtual Machines would provide the required…

Leo SCHOUKROUN

By Leo SCHOUKROUN

Feb 4, 2020

Rook with Ceph doesn't provision my Persistent Volume Claims!

Rook with Ceph doesn't provision my Persistent Volume Claims!

Categories: DevOps & SRE | Tags: PVC, Linux, Rook, Ubuntu, Ceph, Cluster, Internship, Kubernetes

Ceph installation inside Kubernetes can be provisioned using Rook. Currently doing an internship at Adaltas, I was in charge of participating in the setup of a Kubernetes (k8s) cluster. To avoid…

Eyal CHOJNOWSKI

By Eyal CHOJNOWSKI

Sep 9, 2019

TensorFlow installation on Docker

TensorFlow installation on Docker

Categories: Containers Orchestration, Data Science, Learning | Tags: CPU, Jupyter, Linux, AI, Deep Learning, Docker, TensorFlow

TensorFlow is an Open Source software from Google for numerical computation using a graph representation: Vertex (nodes) represent mathematical operations Edges represent N-dimensional data array…

Pierre SAUVAGE

By Pierre SAUVAGE

Aug 5, 2019

Recover from an EFI failure on a dedicated server

Recover from an EFI failure on a dedicated server

Categories: Hack | Tags: Infrastructure, Linux, Cloud

A few weeks ago, before upgrading our Ubuntu systems, we sort of messed around with our EFI partitions and the impacted servers never came back online on system reboot after the upgrade. Provisionning…

Grégor JOUET

By Grégor JOUET

Apr 16, 2019

LXD: The Missing Piece

LXD: The Missing Piece

Categories: Containers Orchestration | Tags: CPU, Linux, LXD, VM, Docker, Kubernetes

LXD stands for Linux Container Daemon. Yet another container technology. But LXD is very different. It stands apart from the pack. It is not necessarily better nor much faster nor more secure! But it…

Tariq SAHNOUNI

By Tariq SAHNOUNI

Dec 28, 2018

KVM machines for Vagrant on Archlinux

KVM machines for Vagrant on Archlinux

Categories: DevOps & SRE | Tags: Arch Linux, KVM, Linux, Virtualization, VM, Vagrant

Vagrant supports different providers to manage virtualization. In a Linux environment, you can dramatically improve VM performance by using the libvirt provider and the KVM hypervisor. This tutorial…

Gauthier LEONARD

By Gauthier LEONARD

Sep 19, 2018

A CoreOS development cluster with Vagrant and VirtualBox

A CoreOS development cluster with Vagrant and VirtualBox

Categories: Hack, Infrastructure | Tags: Arch Linux, CoreOS, Linux, VirtualBox, etcd, Vagrant

Following CoreOS’s instructions on how to set up a development environment in VirtualBox did not work out well for me. Here are the steps I followed to get Container Linux up and running with Vagrant…

Arthur BUSSER

By Arthur BUSSER

Jun 20, 2018

Network Namespace without Docker

Network Namespace without Docker

Categories: Hack | Tags: DNS, Linux, Namespaces, VLAN, Docker, Network

Let’s imagine the following use case: I am connected to several networks (wlan0, eth0, usb0). I want to choose which network I’m gonna use when I launch apps. My app doesn’t allow me to choose a…

Pierre SAUVAGE

By Pierre SAUVAGE

Jul 6, 2016

Node.js is now integrated to the Microsoft Azure platform

Node.js is now integrated to the Microsoft Azure platform

Categories: Cloud Computing, Tech Radar | Tags: Linux, Azure, Cloud, Node.js

Node is now a first class citizen in the Microsoft Azure cloud environment alongside .Net, Java and PHP. This integration is the logical consequence of Microsoft’s involvement in the development of…

David WORMS

By David WORMS

Dec 11, 2011

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