Docker 1.0 & RedHat 7

18 June 2014 in Databases, Docker, Hi-Tech, Linux, Red Hat, SQL

I really like this kind of news, new versions of docker and RedHat: Docker 1.0: this is the first stable version after more than one year of development. This version is production ready and I will start using it asap. RedHat 7: this is a good news as the version 6 started to be a little bit old now. What’s new? MariaDB replace MySQL \o/ Docker integrated systemd XFS by default Kernel 3.

LXC: ressources statistics

16 June 2014 in Debian, Hi-Tech, Linux, LXC

I wanted to find a way to properly view resources (memory/CPU/IO) usages or configuration. For that I need to use cgroups. But the problem are on free, top, htop or common any tools, as they do not get the real informations of the container. We’re in fact waiting on a lot of work on the kernel side or systemd side. More information’s can be found here. Another solution that permit to bind a socks inside containers exists called CGManager, however classical tools doesn’t use it to get informations.

Openstack Meetup 9: Ceph, Swift and ZFS!

14 June 2014 in Ceph, Events, Hi-Tech, OpenStack

Do not miss OpenStack meetup event at eNovance headquarter! There will be big talks on: ZFS Ceph Swift You’ve understood, it’ storage related for OpenStack. Of course I’ll be there :-D. More informations are available here.

Wiki upgraded to MediaWiki 1.23 + GoogleSearch extension

12 June 2014 in Hi-Tech, Web

I recently upgraded the wiki to version 1.23 (new LTS version). As usual Mediawiki made a very good work, no problems during migration using Git, everything is working. No major visual changes between the previous version 1.22 and this one. I didn’t had to touch anything on my JS, CSS or configuration! Great! I encountered an issue with my GoogleSearch extension and made the changes to make it work again. So a new version (0.

Migrating from KVM to LXC…feedbacks

10 June 2014 in Ansible, Debian, Hi-Tech, Linux, LXC, Virtualization

I recently migrated this server to a new one. New hardware, better performance, less power consumption etc…Thanks Online. I’m already using LXC on my home server and see the benefits for 8 months ago. That’s why I decided to migrate this server to LXC as well. The difference here is that I wanted to migrate my VM from KVM. All my KVM VM are on Debian Wheezy so that was pretty easy.

ElasticSearch: meetup 7 in Paris next Tuesday

8 June 2014 in Databases, Hi-Tech, NoSQL

Next Tuesday, ElasticSearch will takes place. Last meetup was very interesting and technical. I hope this one will be as good as the last one. There will be a talk from Dailymotion and an ElasticSearch Core developer. To get more informations it’s here.

Gaudi: graphically manage your docker architecture

6 June 2014 in Docker, Hi-Tech

Luc (@lstep) informed me about an interesting software that looks like Juju at first and I wanted to share it with you. It’s called Gaudi. If you already use Docker to setup your dev box for large applications, don’t you suffer to maintain complex Dockerfiles? Splitting a service Oriented Architecture into several Docker containers is the solution, except managing links and mounts between them is a pain. gaudi solves that by offering a way to describe a system of Docker containers using a simple DSL.

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