My new toy: Ubiquiti mPower

5 August 2014 in Debian, Hi-Tech, Linux

Ubiquiti brings software that are easy to install on Windows and Mac OS. However as it is strongly recommended to let this software always up, it’s preferable to have a Linux version to run it in a container or a virtual machine. That’s why I decided to install it for a powerstrip mPower on Debian inside LXC. The documentation is very poor, that’s why I made this one for those who want to do like me.

Seafile: can’t use client? Use webdav standard!

1 August 2014 in Debian, Hi-Tech, Linux, Web

Seafile is a Google Drive replacement. If you missed m’y previous blog post on it, you can find it here. I really like Seafile even if a search feature is missing :-(. Seafile client is unfortunately not an available solution on all software proposing a cloud connection for sharing files. Hopefully an alternative exists using Webdav protocol. It is not activated by default on Seafile but can easily be enable. Here is how to do it.

Systemd: how to debug a failed boot

28 July 2014 in Debian, Hi-Tech, Linux

I recently switched my laptop from InitV to Systemd. And things didn’t happened as expected. That’s why I need to deep dive into Systemd issues and understand why it wasn’t working. I got problems like this: Failed to get D-Bus connection: No connection to service manager. And hopefully I found very good documentations on Internet (and especially on Arch wiki). I’ve made a summary on my wiki if you want to know how to diagnose a Systemd issue.

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.

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.

Ansible: my first playbook is for LXC

15 May 2014 in Ansible, Debian, Hi-Tech, Linux

I started to play with Ansible a little bit more than a week ago and I really enjoy it compared to Puppet. I still do not have all my reflex that I can have on Puppet, however what I can say is how easy it is to start making complicated things on Ansible! I started to rewrite my Puppet manifests to Ansible playbooks and what I can say is it’s really fast and easy.