WireGuard is a very good alternative to OpenVPN. I’ve been using OpenVPN for more than 10 years now and I was happy until I understood how slow it can be on low energy devices like EdgeRouter. To give you an idea, on my Fiber Home connection (200Mbps), I’m limited to 18Mbps. With OpenVPN, I’m reaching the maximum CPU usage on the EdgeRouter. I’ve heard of WireGuard about a year now and it was time for me to test this interresting alternative.

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I’ve a Ubiquiti EdgeRouter PoE since several years now and really like it. Fanless, small, running on Debian (unfortunately not really up to date) and powerful. However I recently had issues with the disk. Simply dead and obviously a reboot didn’t repaired it. I’ve been searching solutions on the official forum to replace the disk and I was surprised about the fact it runs on a simple USB stick. I decided to replace it with a Kingston one:

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Bye bye Mediawiki

After more than 10 years using my beloved Mediawiki (wiki.deimos.fr), I decided to convert it into static html files and stop using Mediawiki :(. Why? Because maintaining a Mediawiki is a pain when you’re using a lot of extensions. In addition, I’m not using Mediawiki anymore at work, not really following the evolution, don’t want to keep maintaining php/mariadb/nginx and upgrading Mediawiki configuration can be complex as well. I really love markdown solutions generating static files like Hugo and I already did it whith my previous Wordpress.

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I’m an amateur photographer and I’m using an Olympus E-M1 Mark II camera. I take photos in RAW mode to be able. For those who know me, my computer is running on Linux and I’m using Geeqie to display RAW picture. It’s a very fast and powerful solution to display them. In addition of displaying them quickly, it enhances the look and I really appreciate the rendering. Here is the original image (the first one) and the redered one by Geeqie (the second one):

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Long time since my last post. This one is not very technical post, but it’s a nice to have solution if you use grep usually. Are not you fed up to type vim and search the line after a grep command ? If yes, this post is for you. First of all, you may know that an alternative more user friendly to grep exist, called ag (perf comparison). I really like ag and grep, but something make me loose my time since several years and I’m pretty sure it’s your case too.

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Some of you may not be familiar with the terms “Rolling upgrade” or “Rolling restart”. This is the action of upgrading or restarting a cluster without service interruption (alias zero downtime). In most cases, this is done node by node, but in fact it depends of the technology you’re managing and the number of active nodes in your cluster. At Nousmotards we have several Java Spring Boot applications running. Restarting one application can take up to 1 min.

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As I wanted to upgrade it and because it has been asked several time, I upgraded the consul-template Ansible role to manage official binaries (and upgrades). Here are the new vars: consul_template_version:'0.11.0'consul_template_arch:'linux_amd64'consul_template_http_src:"https://github.com/hashicorp/consul-template/releases/download/v{{consul_template_version}}/consul_template_{{consul_template_version}}_{{consul_template_arch}}.zip" You can of course find the role to Ansible Galaxy: https://galaxy.ansible.com/deimosfr/consul-template/ I hope you’ll enjoy this new version :-)

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Pierre Mavro / Deimosfr


MySocialApp Co-Founder  •  Staff SRE Lead at Criteo

Paris - France