The latest debacle over the "forced" upgrade to Windows 10 and Apple's increasingly locked-in ecosystem has got me thinking. Do I really need to use a proprietary operating system to get work done? And while I'm at it, do I need to use commercial cloud services to store my data?

Aujourd’hui, on va voir comment installer Kexec et le script kexec-reboot sur son serveur. Kexec permet de rebooter son serveur Linux et d’appliquer un nouveau kernel à chaud.
C’est très intéressant sur un serveur dédié, car cela veut dire que vous ne redémarrez pas le serveur lui-même, mais seulement le système d’exploitation. Sur une machine virtuelle, le gain est peu perceptible et la technique ne marche pas forcément.
Ça réduit grandement votre temps d’indisponibilité.

An alias is nothing but the shortcut to commands. The alias command allows the user to launch any command or group of commands (including options and filenames) by entering a single word.

Website speed test

L'un avec une capacité de 250 go et l'autre de 500 go. Comment expliquer une différence de performance entre ces deux capacités ?

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. It requires Python 3.4 or later and the Python cryptography library for some cryptographic functions.

Redox is a Unix-like Operating System written in Rust, aiming to bring the innovations of Rust to a modern microkernel and full set of applications.

PostgreSQL on EXT4, XFS, BTRFS and ZFS

Logs contain valuable data for informing the operation of your containerized applications. During development, we can use docker logs to get a stream of logs from a container. But this is just one way that Docker provides to access logs; Docker log drivers support protocols that can centralize logs for aggregation and analysis.

Petite marche à suivre à peu près généraliste pour configurer un serveur dédié Kimsufi.

January, 2015. For about a decade now, I've been using full disk encryption on FreeBSD. Many articles I've seen on the web giving directions on how to accomplish this are not really "full disk"; they leave some of your hard drive unencrypted because the boot code itself needs to be unencrypted. I, on the other hand, am unreasonably paranoid, and so have long had my boot code on an external thumb drive so that my entire hard drive is encrypted. After booting, the thumb drive can be removed and physically kept with you or in a trusted place.

How do I secure my Nginx web server with Let’s Encrypt free ssl certificate on my Ubuntu Linux 14.04 LTS or Debian Linux 8.x server?

Le Shell est un interpréteur de commande qui permet d'accéder aux fonctionnalités internes du système d'exploitation. Jusqu'à maintenant nous avons utilisé le Shell par défaut proposé par Debian, à savoir : bash. Mais il est possible d'utiliser d'autres Shell (comme par exemple Fish, Zsh, Csh...) qui offrent des fonctionnalités supplémentaires qui permettent d'interagir avec le système avec plus de confort et de simplicité.

HAProxy is TCP/HTTP reverse proxy load-balancing software that is available as open source software for both community and enterprise users. HAProxy has become the standard in the load balancing and high-availability management industry because it is available in most Linux distributions and is also the reference load-balancer for cloud orchestrator projects such as OpenStack and CloudStack as well as container orchestrators such as Kubernetes.

So you finally surrendered to containers and discovered that they solve a lot of problems and have a lot of advantages.

With last week's OpenSSL vulnerabilities questions came up when LibreSSL would replace OpenSSL in FreeBSD base. This was picked up by the HardenedBSD developers and they asked me if I'd be interested in adding LibreSSL as alternative libcrypto/ssl in HardenedBSD. Well SURE I do! This post describes the early stages of this project.

I have read a shitload of overcomplicated setups to bring up a postfix / dspam SMTP + antispam server, and finally came to a much lighter and simpler configuration by basically reading documentation and real life examples.
Note this is suitable for a personnal and basic environment, no database, no virtual setup. Basic stuff.

Alors qu’Internet, et particulièrement sa version mobile, prend de plus en plus de place dans la vie quotidienne des entreprises, il est bon parfois de surveiller ce qu’il se passe sur la toile. Que ce soit pour mieux gérer son trafic ou pour améliorer la qualité de son site et de ses applications, voici 5 outils pour dévoiler les coulisses de vos protocoles HTTP.

test your Diffie-Hellman parameters for safe primes and right sizes

Ubuntu 16.04 LTS (Xenial) is only a few short weeks away, and with it comes one of the most exciting new features Linux has seen in a very long time...