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

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

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

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

By Eyal CHOJNOWSKI

Sep 9, 2019

TensorFlow installation on Docker

TensorFlow installation on Docker

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

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: Cloud, Infrastructure, Linux

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…

By Grégor JOUET

Apr 16, 2019

LXD: The Missing Piece

LXD: The Missing Piece

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

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…

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, Vagrant, Virtualization, VM

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…

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, Clustering, CoreOS, Linux, Vagrant, VirtualBox, etcd

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…

By Arthur BUSSER

Jun 20, 2018

Network Namespace without Docker

Network Namespace without Docker

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

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…

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: Cloud, Linux, Azure, 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…

By David WORMS

Dec 11, 2011

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