r10k: manage your Puppet environments dynamically

2 March 2014 in Hi-Tech, Linux, Puppet

If you already played with Puppet’s environments, you certainly know that the major problem is the static form of them. When you want to test something new (a module for example), it’s not quite easy without using environments. r10k bring the dynamic feature and easy module managment ! It’s really easy to maintain your modules without using a lot of git submodules. Simply declare your modules informations like that: mod 'filemapper', :git => 'git://github.

Vagrant: do not manage VBox Guest Additions manually anymore

28 February 2014 in Debian, Hi-Tech, Linux, Virtualization

I recently discovered a Vagrant plugin that manage the VirtualBox Guest Additions automatically. I mean, when you launch a virtual machine, it automatically checks if the Guest Additions are installed. If it’s not the case or if they are not up to date, installation of the latest version is made automatically ! Here is how to install it.

Pandoc: simplify Beamer/LaTeX with markdown

26 February 2014 in Hi-Tech, Linux

Several persons asked me how could they do slides like I did with MySQL/MariaDB for example. I mentioned that I used LaTeX with Beamer and they were all frighten by the technology and language (takes too long time to be able to use it). I think that’s not totally wrong but once you’ve understand how it works…it’s fantastic. So for colleagues and friends, I’ve made a documentation on how to use beamer and provided a template to get a quick start on it.

Linux: better fonts for Retina display

24 February 2014 in Debian, Hi-Tech, Linux, Mac

Big resolution with small screens is more and more common and we’re facing a problem on fonts visualization as the readability is not optimal. We have a lot of non adapted fonts for retina display, even if most of them are not so bad. The solution to resolve that problem is to install additional fonts to replace the default one. And one of the best one I’ve seen is Infinality fonts !

Ceph Day in Frankfurt next week !

22 February 2014 in Ceph, Hi-Tech

I’ll be once again happy to participate to Ceph Day ! We’ll see the new version of Ceph, best practices and how to scale it right :-) This sounds good ! To get more informations: https://www.eventbrite.com/e/ceph-day-frankfurt-tickets-10173269523 Thanks for eNovance to send me there, I’m really happy !

PageSpeed disable Varnish by default ! Get both working together

20 February 2014 in Debian, Hi-Tech, Linux, Web

Yesterday a colleague (Dimitri) tested a tool on this blog. He informed me that Varnish was disabled and PageSpeed may be the cause as this is the last modification I’ve made on the server. After verification he was totally right ! By default, PageSpeed disable cache by serving HTML files with: Cache-Control: no-cache, max-age=0 After reading the PageSpeed documentation on that topic, it is clear: PageSpeed needs to know how to purge the cache as it rewrites a lot of elements and it has the control instead of the application.

WinDbg: analyze crash dump

18 February 2014 in Hi-Tech, Windows

It’s not really common, but here is a tutorial I’ve made to analyze of a crash dump on Windows. I’ve only talked about how to setup the tools and how to use them but do not talk about the analyze itself. May be in another post if I have enough time. Once again, I hope it could help some of you

NEWER POSTS
OLDER POSTS
page 25 of 122