ComputerzWorking with git submodulesDuring the split of the orchestrator-gui into a public part, covered by the Apache 2 license and a…René DohmenOctober 15, 2023 3 min
ComputerzRunning python on mac m1 nativelyI waited quite a while before I decided to switch my python from Intel to ARM on my laptop with…René DohmenNovember 12, 2021 2 min
ComputerzBest practices for hardening a Cardano mining poolI was asked to come up with and advice regarding hardening a Cardano mining pool. As this is a bit…René DohmenJune 18, 2021 4 min
ComputerzDeploy FastAPI on Amazon ServerlessYes yes here we go: an article about how to deploy a simple Fast API app on Amazon Serverless…René DohmenMay 15, 2021 5 min
ComputerzGenerate a type annotated REST api client in pythonToday I was tasked with doing some REST API calls against a rather new FastAPI backend at SURF. The…René DohmenMay 07, 2021 1 min
ComputerzMove a React component to a npm moduleReact is a great way to write reusable components which can be used to create complex but responsive…René DohmenMarch 20, 2021 3 min
ComputerzUpgrading all packages in a React Native Expo projectWhen you're working with an Expo managed React Native app upgrading is relatively easy, but it can…René DohmenMarch 15, 2021 2 min
ComputerzUsing anacondaI used python in a variety of ways in the last 15 years. Back in the days you just worked with a…René DohmenMarch 09, 2021 1 min
ComputerzHowto make fullscreen webpage screenshots with chromeAs a web developer it's often handy to get a screenshot of a long webpage. There are plugins…René DohmenFebruary 27, 2021 1 min
ComputerzRun an expo webserver with port forwardingWhen working with React Native it can be easy to start with Expo as it's an excellent way to…René DohmenDecember 12, 2020 2 min
ComputerzSetup Amazon Cloudfront and S3 to host a SPAAs I host a couple of Microservices with some React JS frontends I like hassle free deployment. But…René DohmenDecember 09, 2020 6 min
ComputerzFind out which ports are used in Mac OsBeing involved in microservice oriented and or container based application architecture usually…René DohmenSeptember 29, 2020 1 min
ComputerzUpgrading Domotics and your databaseMy domoticz system did run quite a while with updates straight from the Domoticz github repo. But…René DohmenAugust 22, 2020 1 min
ComputerzConfigure a custom Amazon Lambda runtime to run lilypondYou can implement an AWS Lambda runtime in any programming language. A runtime is a program that…René DohmenJuly 15, 2019 1 min
ComputerzQuickly deploy a AWS EC2 instance with python and Ubuntu 18.04Working with the Ubuntu 18.04 default image as of 2019 it's very easy to spin up an instance and…René DohmenMay 25, 2019 1 min
ComputerzConfigure a Squid proxy to use multiple from addressesFor some acceptance tests it can be very handy to test webapplications from a couple of SRC IP…René DohmenMay 21, 2019 2 min
ComputerzInstalling a self-updating Domoticz with Homekit supportV1 of my domotica project was running on a Raspberry Pi 1, and it served me well for 3 years. You…René DohmenMarch 29, 2019 3 min
ComputerzMigrating a wordpress blog with content to a pelican based static html siteAfter the last wordpress update/configuration hickup I finally had it. For years I had struggled to…René DohmenDecember 13, 2018 1 min
ComputerzWhat to do if you PyCharm doesn’t start after an updateYesterday after updating from 2018.1 to 2018.2 PyCharm kept crashing when closing a project. As…René DohmenAugust 24, 2018 1 min
ComputerzCreate a Mac OS High Sierra usb install stickThere a numerous GUI program's out there to create a stick but's it super duper easy to do it from…René DohmenAugust 20, 2018 1 min
ComputerzBuild your own deployment pipeline hackathonLast Tuesday I attended a trial of a continuous delivery (CD) hackathon that will be hosted by…René DohmenMarch 10, 2018 5 min
ComputerzTips and tricks with ansibleRecently I'm playing a lot with Ansible. The goal is to deploy a large Django stack to production…René DohmenMarch 02, 2018 1 min
ComputerzEnable syntax coloring on Jenkins with vimWhen i'm offered the choice I will use Gitlab + Gitlab CI as it integrates everything that's needed…René DohmenJanuary 24, 2018 1 min
ComputerzSetup Django to use Graylog loggingI'm quite a big fan of Sentry logging, especially for Django project, but for a project I needed to…René DohmenJanuary 19, 2018 2 min
ComputerzInstalling Magento2 with dockerThis is the second post in a series of post describing how to run Magento via Docker on Mac OS…René DohmenOctober 03, 2017 1 min
ComputerzInstall Magento2 on Mac OS with vagrantAs Magento2 is one of the most used ecommerce solutions, on this planet, there are a lot of ways to…René DohmenJuly 15, 2017 3 min
ComputerzMagento2 Categories, product types, attribute sets and groupsAs a reminder for myself, some info about the Magento2 product model, and it's quircks. Product…René DohmenJune 16, 2017 2 min
ComputerzReview klacht.nl en Sony Playstation networkIk had mijn support vraag bij Sony al helemaal opgegeven. Het geschil was te klein voor mijn…René DohmenMarch 18, 2017 3 min
ComputerzCleanup boot partition on UbuntuIf apt-get isn't functioning because your /boot is at 100%, you'll need to clean out /boot first…René DohmenSeptember 12, 2016 1 min
Computerz5 Advantages of working agileAgile software development is the preferred way for a lot of companies and successful software…René DohmenMay 17, 2016 4 min
ComputerzTips and quirks with ansibleRecently I'm playing a lot with Ansible. Some handy commands Install nginx Deinstall it againRené DohmenFebruary 11, 2016 1 min
ComputerzClean up a Ubuntu server boot partitionWhen you choose the default partition plan on a Ubuntu server you likely end up with a small boot…René DohmenNovember 13, 2015 1 min
ComputerzInstall Taigo, scrumboard en project planning tools on an Ubuntu boxInstall system deps. The official docs: http://taigaio.github.io/taiga-doc/dist/setup-production…René DohmenOctober 03, 2015 1 min
ComputerzInstall python2.7 and Django + postgres on windowsInstalling a quite normal Django stack on windows with postgres support yields a lot of questions on…René DohmenSeptember 19, 2015 1 min
ComputerzSetup a windows comp for Django1.8 with Python 3.4 and Psycopg2As a Linux user the installation of all deps is rather easy; you run a couple of apt-get installs…René DohmenJuly 09, 2015 1 min
ComputerzRemoved SweetCaptcha plugin as it was suddenly bloated with ads en malware.SweetCaptcha is a free CAPTCHA service that offers to match "sweet" images instead of making you…René DohmenJuly 03, 2015 1 min
ComputerzInstall virtualenv on OSXChoose whether you want OSX python or home brew version. When you choose home brew run: Then install…René DohmenJune 02, 2015 1 min
ComputerzUsing Semantic UI with Django on OSXI lately started working on some Django projects. The project started from scratch so my first…René DohmenMay 21, 2015 1 min
ComputerzInstall python PIL or Pillow on Ubuntu 14.04 64 bitEvery now and then I have to install Python PIL or Pillow on an Ubuntu server. I mostly end up with…René DohmenMay 19, 2015 1 min
ComputerzInstall phpunit on windowsYou can use composer to install phpunit, for example, inside a Symfony2 project; but it's better to…René DohmenFebruary 23, 2015 1 min
ComputerzAdd a Comodo SSL certificate to NGINXThe comodo SSL certs via https://ssls.com are very cheap. Install instructions for a Nginx based…René DohmenJanuary 05, 2015 1 min
ComputerzStop/Start or Restart Symform linux serviceThe Symform daemon is not a default Linux service so it took me a while to figure out how to start…René DohmenDecember 19, 2014 1 min
ComputerzSend mail via Gmail from a local postfix server on UbuntuIf you want to use Gmail for sending mails from postfix follow this guide. First, install all…René DohmenDecember 16, 2014 1 min
ComputerzRebuilding the nvidia kernel module for UbuntuI recently bought a GTX 750Ti which isn't supported by Ubuntu's drivers yet. So I installed the…René DohmenSeptember 29, 2014 1 min
ComputerzUsing multiple Heroku accountsIt's quite easy to use multiple Heroku accounts. install the Heroku plugins from: git://github.com…René DohmenSeptember 25, 2014 1 min
ComputerzInstall Weasyprint on Ubuntu 12.04 64 bitI had to tweak some stuff to get a running Weasyprint on one of our Ubuntu servers; just following…René DohmenSeptember 18, 2014 1 min
ComputerzInstalling Odoo/OpenERP 8 on Ubuntu 12.04 LTSWhat is Odoo? Recently OpenERP is re-branded to Odoo. OpenERP was primarily an Open Source…René DohmenSeptember 14, 2014 1 min
ComputerzSome handy ls and find tricks with datesAs a quick reminder for myself; some ls and find variations to do stuff with files and dates. ls…René DohmenSeptember 03, 2014 1 min
ComputerzTrust a self signed SSL certificate in ChromeI've been using Google Chrome as my primary browser for the last few years. Sorry, Firefox, but with…René DohmenAugust 29, 2014 1 min
ComputerzRuby on Rails DB cheat sheetAs I started to do some development in Ruby here is a quick cheat sheet with some handy DB stuff…René DohmenJune 25, 2014 1 min
ComputerzDetermine sqlite table size on diskI took me a while to find out that it's not very easy to find out how big a sqlite table is on disk…René DohmenMay 28, 2014 1 min
ComputerzInstall Qt and compile Capybara webkit on Linux and mac OSXTo automate browser style testing in Ruby you can use Qt webkit caompatible browser with CapyBara…René DohmenMay 09, 2014 1 min
LifeRode kool op grootmoeders wijzeDit is een klassiek rode kool met appeltjes recept dat je lekker lang moet stoven in een vuurvaste…René DohmenApril 10, 2014 1 min
ComputerzInstall Ruby on Rails 4.0 on Mac OSX with home-brewI recently started to do some development on some Rails4.0 based apps. Setting up a nice and clean…René DohmenApril 05, 2014 2 min
ComputerzUsing your FreeNAS root accountTo get full rsync backups from a server on your FreeNAS box you have a couple of options. It took me…René DohmenApril 03, 2014 1 min
ComputerzInstall Ruby on Rails on Ubuntu 14.04 with RVMInstalling Ruby on Rails on Ubuntu is quite easy, but the Ubuntu packages install an outdated Ruby…René DohmenMarch 28, 2014 1 min
ComputerzRunning Unity3D webplayer on your linux boxAs NaCl builds are not working at all in Unity4.3 and Flash is most likely to be removed from future…René DohmenMarch 11, 2014 1 min
ComputerzDo a complete backup with rsync of a linux serverCreate a exclude file: "exclude.rsync" with content: Create a file: /etc/rsyncd.conf on the server…René DohmenFebruary 05, 2014 1 min
ComputerzDownloading OpenStack images with GlanceWhen you create OpenStack snapshots you'll also need to download the snapshot to a safe location…René DohmenJanuary 10, 2014 1 min
ComputerzBypassing the big Chinese firewallI made a couple of preparations to make sure I could use internet in China in a reliable way. I did…René DohmenJanuary 10, 2014 2 min
ComputerzShow hidden files on OSXWhen you use a mac, unix style you sometimes want to see .file and .folders. Here is how to do it…René DohmenDecember 12, 2013 1 min
ComputerzStop OSX from automatically indexing external disksYou have a couple of options here. You can either prepare the disk; so OSX knows to not index them…René DohmenDecember 12, 2013 1 min
ComputerzPasswordless login via ssh in just 2 commands!I already wrote some earlier posts on this topic; but I found a new command: ssh-copy-id; it's…René DohmenNovember 16, 2013 1 min
ComputerzUsing PyCharm for professional web2py developmentOur current IDE, Eclipse with PyDEV has some nice features but feels rather slow and clumsy. You…René DohmenNovember 06, 2013 1 min
ComputerzSpam van Zzap-online.euHet is weer zover, we hebben weer een spammer bereid gevonden om in ons spamhoekje te staan. Zoals…René DohmenOctober 28, 2013 3 min
ComputerzClone your OSX to an bootable external driveTime Machine is great for everyday backups and simple file restores, but it only gives you the…René DohmenOctober 19, 2013 1 min
ComputerzNetflix bekijken met Ubuntu 12.04 en andere Linux variantenMet de komst van Netflix naar Nederland heb ik uiteraard een abonnement afgesloten om het het eens…René DohmenOctober 15, 2013 1 min
ComputerzUsing vertically tiling background images for tables and tables cells in outlook 2007 and outlook 2010 to make fancy e-mail newslettersAfter a whole day of searching the internet why tiling background won't show up in a e-mail template…René DohmenOctober 10, 2013 1 min
ComputerzConvert a whole bunch of video files to .ogv theora format in one commandJust a short post as a reminder for myself. We do use a lot of ogv's in our Narrow casting shows…René DohmenSeptember 14, 2013 1 min
ComputerzFully automated touch screen testing lego mindstorms robot v1When conventional Unit testing fails we are forced to do the testing of our software manual. This…René DohmenAugust 29, 2013 1 min
ComputerzInstalling kivy on Mac OSX 10.6 with brewWe are doing more and more cool kivy stuff so it's time to get the designers happy and let it run…René DohmenAugust 28, 2013 1 min
ComputerzConfigure multicast network traffic to go over a specific network interface on linuxI'm using eth2 to connect to a seperate LAN with only some multicast video streams on it. On my…René DohmenAugust 24, 2013 1 min
ComputerzFixed: X won\'t start after update to Ubuntu 12.04.3I'm running a dual-screen set-up and need the proprietary drivers because the standard ones won't…René DohmenAugust 24, 2013 1 min
ComputerzDisable the powerbutton on Ubuntu 12.04In Debian or Ubuntu minimal disabling the power button is quite easy. Just remove the contents of…René DohmenAugust 16, 2013 1 min