June 29, 2020

Apple! the world is not ready for ARM

Introduction Last week Apple announced its transition to ARM, err, Apple silicon. My first thought was: poor developers who work with Docker! They will now develop and test on an architecture that is - at most - exotic in the datacenters of the mainstream cloud-providers. Don’t get me wrong, I am not an Apple-hater: my day-job work-horse is a 2015 Macbook Pro, and I like it better than my work Windows laptop, also because it has an I7 Intel CPU that has aged well. Read more

June 28, 2020

Manage your home-network with an Azure DNS Zone

Introduction Azure DNS Zones is an inexpensive way to manage DNS records for your domains, even if you have dynamic IP. Back in the days, and before greedy Oracle took it over, dyndns.org used the (free) place to be if you had a dynamic IP and wanted to expose your home-network. Things have changed but fortunately offers like Azure DNS Zones are as inexpensive as a few Euro per month, and are easy to maintain with a little scripting. Read more

June 20, 2020

Grafana remote image renderer

Introduction Since the Grafana Image Renderer plug-in is not supported anymore from Grafana 7.0 some changes are required to switch to the remote image renderer, and run it as a docker container. This post goes into the details of setting-up a remote image renderer for Kubernetes, on amd64, arm/v7 and arm64. Multi-arch build The official git repo only supports linux/amd64 at this moment but there is an issue for arm-support. Read more

June 14, 2020

Building docker images for multiple architectures with docker buildx

Introduction In this previous post we have been exploring how to build docker images for multiple architectures. In this post we will look into streamlining this approach using docker buildx, both locally and in gitlab-ci. Step-by-step Enable buildx In order to use docker buildx you will need: A recent docker version; I am running 19.03.11 on linux enable the experimental features: export DOCKER_CLI_EXPERIMENTAL=enabled Running docker buildx should show you: Read more

May 3, 2020

Building docker images for multiple architectures

Introduction Since Kubernetes runs on the Raspberry PI I have been investigating ways to build my blog so that it can run on my x86 (Proxmox) as well as ARM Kubernetes cluster, composed of Raspberry PIs and an Nvidia Jetson Nano. This post will take you through my learnings of the taxonomy of architectures and platforms, as well as building docker images for multiple architectures. Architectures Well, I already knew that rpi has a different architecture than my Intel-based hardware, so let’s get into how these are named. Read more

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