Author Archives: Theuni

haproxy load-balancing for PHP applications with sticky sessions

We like applications that are written with a shared-nothing approach: it greatly simplifies running multiple instances on multiple hosts and allows for simple, robust load-balancer configuration. Recently, we had to deploy a PHP application that – in the last minute – turned out to use PHP sessions … Continue reading

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#monitoringlove sprint takeaway

A few weeks ago I co-organised and participated in a #monitoringlove sprint in Berlin. My personal plan was to play with more modern utilities that can potentially replace our existing Nagios monitoring chain. The result of what I think would … Continue reading

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PyCon 2013 report

PyCon 2013 was an excellent conference bringing together Python’s vast, diverse, and technically excellent community. I had the opportunity to visit the whole conference including the sprint days. Magnitude The size of the community seems well reflected by the number … Continue reading

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How we organize large-scale roll-outs

In the coming week we will deploy an extensive OS update to our production environment which (right now) currently consists of 41 physical hosts running 195 virtual machines. Updates like this are prepared very carefully in many small steps using … Continue reading

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Happy new year – cleaning up the server room!

Welcome to 2013! Alex and I are using this time of the year when most of our colleagues are still on holidays to perform maintenance on our office infrastructure. To prepare for all the goodness we have planned for the … Continue reading

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Introducing the “Flying Circus”

We have been busy in the last months to improve the presentation of our hosting and operations services a lot – and if you attended the Plone Conference in Arnhem, you may have noticed some bits and pieces already: T-Shirts, … Continue reading

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Surprising experience with DELL support

Background: we had terrible support experiences with DELL over the last 4-5 years or so and I just had a single really good one today. We started moving slowly to a different vendor and won’t change our decision because of … Continue reading

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