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Getting Graylog2 to run

Posted on 2 April 2014 | Systems by Daniel Schutterop

I was dying to try out the all new Graylog2 v.0.20 that came out early this year. After using the RC’s and the ancient versions before that, I know that getting Graylog2 to run isn’t always a walk in the park. Of course I looked around for places containing the much needed informations and pointers …


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Using Gherkin to write user stories that will make sense to both stakeholders and the development team

Posted on 5 March 2014 | Development by Eric Alvares

Everybody should be using Gherkin for describing application behavior! It’s easy to use, it helps to be accurate and it allows for easy automated testing. Gherkin is a Business Readable, Domain Specific Language created especially for behavior descriptions. It’s perfectly usable for business analysts and product owners. At the same time it’s a perfect fit …


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Hello rem and Sass, goodbey px and em

Posted on 4 March 2014 | Development by Ben Besuijen

Font sizing To be sure your website is exact the same as your visual design, a pixel is the most prefered unit for sizing. Also the em unit can be very handy for child elements. The old way There are several tastes for font sizing. The most easy way is to use pixels because it’s …


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Solaris Integrated Loadbalancer (ILB)

Posted on 4 March 2014 | Systems by Jeroen de Meijer

Solaris 11 has a nice new feature, the integrated loadbalancer! This loadbalancer is easy to configure and has a lot of feature. I personally use it for my datacenter in the box. I’ve created, with the help of crossbow and Solaris Containers, a complete datacenter architecture within one server (a Sun T2000). To make the …


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Fit HTML table’s in Responsive websites with CSS

Posted on 4 March 2014 | Development by Raymon Schouwenaar

These days where building all website’s responsive. We make everything flexible to fit in screen’s of smaller devices with CSS3 Media Queries. I think none of us build his website’s with HTML table’s (only beginners who learn HTML). I think every frontend developer hate’s table’s. But there is one reason to use HTML table’s. Only …


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Move over Grunt: Introducing Gulp

Posted on 4 March 2014 | Development by Michiel van Roon

In case you’re new to Grunt or even front-end automation in general – GruntJS is a task runner for web applications. It’s a piece of software that can do a lot of repetitive tasks for you like minification, linting, compilation, setting up web servers and live-reloading. Let’s say you want to ‘watch’ your HTML, CSS …


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Metrics reporting in Cassandra 2.0.2

Posted on 4 March 2014 | Systems by Hans van der Linde

From Cassandra 1.2, metrics has since been expanded in 2.x.x and beyond. In this example we use Cassandra Datastax Enterprise 4.0. There are now a variety of metrics for cache size, hit rate, client request latency, thread pool status, per column family statistics, and other operational measurements. You could always write some custom java code …


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ISCI initiator on centos

Posted on 4 March 2014 | Systems by Arjen de Vries

In this short tutorial i will show you how to setup an ISCSI Initiator under Centos 6.5. For this tutorial an ISCSI Target was already created on host 192.168.1.2 with a size of 21GB First we will have to install the ISCSI initiator utils package: 1 yum install iscsi-initiator-utils yum install iscsi-initiator-utils The Target uses …


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The typo

Posted on 3 March 2014 | Systems by Daniel Schutterop

In this era of technical challenges, this world of well-written, easily executable code and universe of repositories and version checking, there is still something we haven’t been able to weed out after numerous efforts. No matter how hard we try, at least on a technical level, it’s still pretty tough to eliminate one of the …


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A small benchmarking framework

Posted on 12 February 2014 | Systems by Daniel Schutterop

In order to benchmark freshly deployed machines, or at least check if they’re up-to-spec, I’ve written a small benchmark framework to get it done. The basic gist: You ensure=>present a given flag file through puppet in a designated directory on the target machine and start the benchmark script (with the benchmark item as parameter). The …


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