How to change Cassandra compaction strategy on a production cluster

I'll talk about changing Cassandra CompactionStrategy on a live production Cluster.
First of all, an extract of the Cassandra documentation :

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Author's profile picture Skunnyk on cassandra

HTTP alternative services and opportunistic encryption

HTTP Alternative services allow an origin's resources to be authoritatively available at a separate network location, possibly accessed with a different protocol configuration.
Opportunistic Encryption (OE) provides unauthenticated encryption over TLS for data that would otherwise be carried via clear text. It allows a http:// connection to use secure resources.

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Author's profile picture Skunnyk

News from Xfce 4.12, part 3

A bunch of news from the development of Xfce 4.12 !
Since my previous post in november (read it !) , many things have happened.
First, the most awaited news ... wait for it... a date has been decided ! 4.12 will released by the last week end of February 2015 ! (yes, 1 week from now)

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Author's profile picture Skunnyk on xfce

News from xfce 4.12, part 2 !

Update 19/02/2015 : A new post is available !

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Author's profile picture Skunnyk on xfce

Slides du Premier Meetup Archlinux France

Ce 21 Octobre a eu lieu le premier meetup Archlinux France, dans les locaux d'Arkena à Paris.

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Author's profile picture Skunnyk on archlinux

Nginx - create a cache based on upstream response time

The problem : be able to cache a backend response if it took more than 5 seconds. If not, don't cache it!
A good challenge from @florentsolt. He solves the problem with a nodejs reverse proxy behind nginx, but I prefer a pure nginx implementation ;)

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Author's profile picture Skunnyk

Remote code execution through bash CVE-2014-6271

A new vulnerability has been discovered in bash, related to how environment variables are processed. You can read more on redhat security blog. This vulnerability can be used to execute remote code, even via ssh, if the remote shell is bash.

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Author's profile picture Skunnyk

News from Xfce !

Update 19/11/2014 : A new post is available !

Some news from Xfce, my favourite Desktop Environment, that I use since something like 2006.

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Author's profile picture Skunnyk on xfce

Chiffrement entre serveurs avec starttls et postfix

Depuis quelques temps, la question du chiffrement des mails en transit (de serveurs à serveurs) revient d'actualité. On peut voir google qui diffuse des statistiques dans son report "Safer email",

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Author's profile picture Skunnyk

Fail2ban on FreeBSD

Fail2ban scans log files (e.g. /var/log/apache/error_log) and bans IPs that show the malicious signs -- too many password failures, seeking for exploits…
It can be usefull to ban bots who try to bruteforce your ssh and flood your logs (another solution is to restrict allowed IP or change sshd port).

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Author's profile picture Skunnyk

Archlinux.fr passé, présent, futur

Archlinux.fr est le principal site francophone autour de la distribution Archlinux. Comme tout site animé par une communauté, il a subi des hauts et des bas au niveau de son activité. Je vais tenter de faire un état des lieux et des projets futurs.

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Author's profile picture Skunnyk on archlinux

Replace a dead node in Cassandra

I want to share some tips about my experimentations with Cassandra (version 2.0.x).

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Author's profile picture Skunnyk on cassandra

Mise en place de DKIM avec Postfix

Cette documentation décrit la mise en place de DKIM (DomainKeys Identified Mail), une norme d'authentification du nom de domaine de l'expéditeur d'un mail.

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Author's profile picture Puckel_

Xfce - Xfwm4 zoom mode in 4.12

Xfce is my main desktop environment since more than 6 years, and I really like it. I try to make some patch from time to time, and if you search a project to contribute, it's here ;-)

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Author's profile picture Skunnyk on xfce

Use KDEConnect with android and Xfce

Update 06/14/2014 : kdeconnect is in community + typo

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Author's profile picture Skunnyk