https://jawr.github.io/jl-lu/tags/nixos/Recent content in nixos on jawrHugo -- gohugo.ioen-gb© {year}Thu, 04 Mar 2021 09:49:21 +0900https://jawr.github.io/jl-lu/blog/nixos-and-kubernetes-woes/Thu, 04 Mar 2021 09:49:21 +0900https://jawr.github.io/jl-lu/blog/nixos-and-kubernetes-woes/After my recent fiddling with k8s, I decided to try out k3s which offers a slimmed down version of kubernetes. I also decided to take the plunge and push up my virtual experimenting and place it in to the cloud, using the lovely Hetzner nixops plugin . Routing Hell By far the most frustrating issue I encountered revolved around routing. Inter communication between the nodes is unencrypted by default (when using flannel) and so I wanted to link all nodes and pod via wireguard.https://jawr.github.io/jl-lu/blog/nixos-wireguard-and-modules/Tue, 16 Feb 2021 17:29:58 +0900https://jawr.github.io/jl-lu/blog/nixos-wireguard-and-modules/Refactoring In my previous post I attacked the kubernetes configuration using only one module, the rest created relied on functions. It didn’t feel idiomatic and when trying to add wireguard, the cracks started to appear. It felt like I was fighting with the language. After some wonderful duck debugging with the excellent community on IRC, I decided to refactor what I had in to modules. Modules The NixOS wiki has an excellent article on modules, but the gist is that a module is a set that has the following syntax:https://jawr.github.io/jl-lu/blog/nixos-starting-a-kubernetes-cluster/Mon, 08 Feb 2021 23:11:33 +0900https://jawr.github.io/jl-lu/blog/nixos-starting-a-kubernetes-cluster/Too many Buzzwords Lately I have been porting a project from a systemd service to a fully fledged, cutting edge, Docker on kubernetes setup. The main reason for this has been $reason. Initially I was using minikube which uses VirtualBox to create a ready made cluster which is perfect to learn with. Searching for a home After doing some research and deciding that a hosted solution was far too expensive for my needs, I started to entertain the idea of running my own cluster and to kubernet all my existing services and projects in to one giant auto healing, auto scaling ball of cool.https://jawr.github.io/jl-lu/blog/nixos-cloud-init/Fri, 22 Jan 2021 12:55:09 +0900https://jawr.github.io/jl-lu/blog/nixos-cloud-init/But there’s no image?! When starting a new instance up on scaleway there is no option to select NixOS, but using the cloud init hook you are able to boot up an instance. After a few moments you can login using your predefined SSH keys which have been initialised, along with the hostname and SSH serrvice, in /etc/nixos/configuration.nix: { ... }: { imports = [ ./hardware-configuration.nix ./host.nix ]; boot.cleanTmpDir = true; networking.