Nixos vs kubernetes Sources: Difference between channels? xLICENSE · GitHub Diffing source-paths. It supports various orchestrators like Kubernetes, Docker I’ve set up a couple of Kubernetes clusters with firewall interfaces like ufw, iptables, nftables, etc. The VM stack, which includes the bits to run Kubernetes. Response to Flakes; Light weight nodes by LXC/Incus On NixOS is is easy to set up Kubernetes by a single line of config: services. Firstly, remove your swap filesystem. Kubernetes is not intended to run with swap. 09. Currently there are no actively developed nix tools for managing cluster state and I think it would be good to either start a new tool or pickup one This article will show you how to setup Kubernetes on your local NixOS machine and perform some common tasks such as starting containers and routing traffic to your running containers. pluginsDir and picks up the plugins correctly. masterAddress = I'm currently deploying a bare metal kubernetes cluster using Talos and it's amazing. To show how Nix could be used to manage Kubernetes, Rosso set up a virtual machine disc image populated with Kubernetes, containerd, and kubeadm, and then spun up three instances. roles = ["master" "node"]; This installs both the master and node components on the local system and therefore creates a nice little working local kubernetes "cluster". everything you need installed before you run the Kubernetes I am trying to run kubernetes on nixos in a single node mode. Here is an interesting angle on kubernetes’ complexity via an asessment of its essential vs. Check helm plugin list to verify for helm. Jaeger Python Java Node. NixOS enables declarative node management and HA k8s cluster building. ️ Elasticsearch instance graciously provided by Bonsai. NixOS vs Talos: What are the differences? On the other hand, Talos is detailed as "A modern Linux distribution for Kubernetes". Kubernetes and OpenShift. on. In the process of debugging this & trying to make I posted this question already yesterday in the discord, but didn’t receive a response so far. Recently, I set up the first cluster running on NixOS. I’m curious, do you use nixOS in your homelab for Kubernetes? This idea is growing in my head ;) Share Sort by: Best. I have added the following to my configuration. I haven’t found these facts in one place, so I’m posting them here. js Golang +6 more. Talos tightly integrates with Kubernetes, and is not meant to Since the merge of kubernetes: 1. I’ve been looking at Nix · direnv/direnv Wiki · GitHub and also working through the Nix Pills | Nix & NixOS so I’m slowly getting a foothold. Not sure. 03 in particular, before we get too close to March 2020. I had kind installed before, since that’s what I knew before @azazel75 pointed me to k3d, which is supposed to be much more lightweight than kind. New Here helmfile-wrapped reads kubernetes-helm-wrapped. scope Kubernetes on nixOS using k3s (Part 2) June 5th, 2020. So far I am aware of a few others who are using either k8s or k3s on nix and I think it would be useful to create a centralized place to discuss issues and ideas. Additional information regarding the Nix package manager and the Nixpkgs project can be found in respectively the Nix manual and the Nixpkgs . Thank you! ️ I can do this, which actually starts a cluster. Fullstack software engeneer in javascript, python, c, nix and more, with experiences in We run all of our prod clusters on Ubuntu, it's ultimately about what the operator is comfortable with. I know NixOS for Kubernetes . While I have successfully used k8s in the past, the gluttony that shines all over it does not make me the biggest fan. For example with the NixOS module, all you need is services. I tried enabling kubernetes with services. nix: services. In this case, that purpose is Kubernetes. Wrong channel selected! Please select one of the channels above! Please help us improve the search by reporting issues. Tech Brand Mgr, Office of CTO at Uber · Dec 4, 2018 | 44 upvotes · 12. Just the memory consumption of cert-manager (effectively used every 3 months) or the number of lines the prometheus helm chart generates covers me with disbelief. How Uber developed the open source, end-to-end distributed tracing Jaeger, now a CNCF project: This manual describes how to install, use and extend NixOS, a Linux distribution based on the purely functional package management system Nix, that is composed using modules and packages defined in the Nixpkgs project. Discussion Hello homelabers ! I’m actually using Debian in my homelab, and at work. I cannot enable the NixOS-managed firewall without the cluster becoming unreachable. See https://github. Linux and macOS put Unix in the hands of almost every developer in the world by providing beautiful user interfaces, but Ken Thompson and Dennis Ritchie built Unix First, Sorry for the late response 😛 I currently do not use NixOS as OS for Kubernetes simply because I do not host anything more than a local Kind cluster, yet would be freaking cool to have Nix immutability alongside Kubernetes. now, we have some integration there already, but more specifically, i’d been wondering if it could be useful A recipe for a cluster of virtual machines managed by Terraform, running a highly-available Kubernetes cluster, deployed on NixOS using Colmena. The PKI bootstrapping process involves setting up a certificate authority (CA) daemon (cfssl) on the kubernetes master node. Best. Don’t hesitate to go and read these projects if you need more Yes, the NixOS and home-manager modules both set up containerd with nix-snapshotter without Kubernetes, see installation steps. Please correct me for any inaccuracies. we’ve had some NixOps tools out there, but i was wondering if it could be useful to combine Nix with one of the more mature existing tools out there, Kubernetes. cfssl generates a CA-cert for the cluster, and uses the CA-cert for signing K3s documentation is available at: https://github. Lack of proper dependency isolation/management. From the pods’ logs, it seems like all internal traffic is blocked, as well. Especially because there is a Terraform provider from siderolabs so you can automate the whole process :D Heard great things about Talos as well. Open comment sort options. I don’t recommend virtualisation. The hypervisor, which includes network stack configuration along with libvirt, qemu, and kvm. Top. roles = [ "master" "node" ];, but it looks like aarch64 is not supported (errors below). This article assumes you know basic Kubernetes hi there, i’d had this idea and wanted to bounce it off of others to check if it holds water. To a large extent, Linux is Linux and the containers running on that kernel will work the Use nixos to run your k8 cluster if you are insane (or have the $$$ for salaries) enough to run your own k8. Uber Technologies. Therefore I repost here with a slight reword: I just tried the “1 master + 1 node” approach from the Wiki, but without adding a second computer to the mix { services. What I need run some oci containers on 1-2 machines run multiple instances per I have various kubernetes clusters of different versions, some old enough that the current kubernetes kubectl will not work with them. 3 (with revert of module systemd dependencies) by johanot · Pull Request #67563 · NixOS/nixpkgs · GitHub we now at least have a stable kubernetes module (and package) for the When we started using Kubernetes at my day job a couple of years ago, we deselected kubeadm because at that time it Hello, I’m wondering if there’s a decided policy/plan around when the kubernetes packages are updated to the latest release version? I see a commit from a few days ago that updates the patch version, but there is also a new minor version available that is already on it’s own third patch release. This guide accompanies my 2023 Kubecon talk, Nix, Kubernetes, and the Pursuit of Reproducibility. Komplexity / Operational overhead Hello, This thread is to gather interest for Kubernetes on Nix. Conor Myhrvold. nix-snapshotter. It also has the limit that you have to containerise everything and isn’t really suited to managing local node setups (i. But with the following (and maybe more) painpoints resolved: Container images and registry is stateful and hard to maintain. In this article, we will explore the key differences between Docker and NixOS. Search. kubernetes. xz Differences between channels There are four classes of NixOS channels: nixos-xx. You can imagine Talos as a container image, in that it is immutable and built with a single purpose in mind. This is outdated! k3s is now packaged in nixpkgs! In part 1, you should have got k3s installed onto your nixos system. 11 unstable. Anyway, I’m looking to add k3s as a Nix I’ve managed to glean the following information about the various Nix channels. Kubernetes and OpenShift are powerful platforms for container orchestration, particularly in multi-node, In summary, Kubernetes is a container orchestration system designed for managing large-scale clusters of machines, while NixOS is a Linux distribution that focuses on functional system Nix to Deploy Kubernetes. systemd-run --scope --user kind create cluster Running as unit: run-rabf1207a1e7c478b9d077dd13535f895. However, in Some of the pros of this approach: It has the potential of reducing the number of NixOS options from currently ~145 to ~20, provided that each of the cluster components have I often hear that kubernetes is complex and that NixOS is simple. 14. nix file and setup direnv in that directory. However docker does fill a different niche as you say, and I continue to use it after transitioning due to microservices projects, multi tenancy between various clients and closer emulation of staging and production environments (even though nixos ceiling Docker and Kubernetes made containerization ubiquitous by simplifying build and orchestration, but modern containers trace their heritage to FreeBSD Jails released 20 years ago. kubernetes = { roles = ["master" "node"]; }; when I run nixos-rebuild, I do get kubectl executable and I notice that a Compare Kubernetes vs NixOS. Hi there! Today was the first time, that I had the need to try something out in a cluster. However, I ran into two errors: kubectl-commands are executed painfully slow; NixOS documentation and NixOS github repo are usually of great use when it comes to adding features to NixOS host. easyCerts. passthru. Likewise check helmfile init to Since the merge of kubernetes: 1. 7M views. Shared insights. oci-containers. yaml files / helm charts are painful. Welcome to my talk about running kubernetes on nixos, i'm Jaka Hudoklin and will talk about why nixos and kubernetes are a great combination. This project serves as an example of using the NixOS Kubernetes module in an advanced way, setting up a cluster that is highly-available on all levels Inspired by nixos-ha-cluster, I began to build. yy, the The NixOS on the nested K3s server container (if it exists) has the same admin user; Hosts are accessible by ssh ssh connections prohibit passwords and root logins (only ssh keys are allowed) the admin user has a password for sudo once an ssh connection is established; Kubernetes versions are shared All K3s-servers run the same NixOs version NixOS options; Flakes Experimental; Search more than 20 000 options. On other operating systems (Debian based), I was able to easily do this using k3s. NixOS vs. Docker is a popular platform for containerization and NixOS is a Linux distribution that employs a declarative approach to system configuration. containers since it only works with docker or I know that in the past, people brought up the discussion to have separate repos for K8S in Nix, see (nixos/kubernetes: extract module from nixpkgs into out-of-tree flake · Issue #115179 · NixOS/nixpkgs · GitHub) as a way to fast iterate and simplify nixpkgs abstraction, I do not know how successful they were but is another starting point to Unfortunately, NixOS doesn't have a good story yet for service management (Disnix isn't nearly as featureful as the Kubernetes scheduler and doesn't see nearly the same activity / community buy-in as Nix / NixOS) let alone ensuring that networked storage is re-attached to the particular node that runs the service in the same reliable manner We can do this with Kubernetes right now, but at the cost of a system that tends towards being hard to debug when things go wrong, and things can go very wrong. at. com/NixOS/nixpkgs/blob/master/nixos/modules/s My strong Now lets create VM images capable of running Kubernetes. Again, create a flake. e. 3 (with revert of module systemd dependencies) by johanot · Pull Request #67563 · NixOS/nixpkgs · GitHub we now at least have a stable kubernetes module (and package) for the 19. 15. Specifically, it seems I need to create a default. enable = true and it’ll configure containerd for you as well. roles = ["master" "node"]; services. Depending on how things play out, I can try to help at least with some K8S knowledge and single host (aka my laptop) tests. . It demonstrates how to use Nix(OS) for all layers of a server stack. accidental Kubernetes might be an excellent choice for many large-scale (really big), complex, and highly dynamic environments, Disnix offers a simpler, more controlled alternative that can I’m trying to summarize from my view In a nutshell: Disnix tries to achieve what kubernetes also does. 05 Deprecated 24. This time it will create a devShell with helm and helmfile and listed plugins available. Now it’s time to look ahead and discuss what we want for the future, 20. md This is nitpicking, but the similarity doesn't stop at dependency isolation - it is also deterministic provisioning which nixos does better. This part talks about running it as a service. NixOS environments are minimal, including only the necessary dependencies—ideal for ephemeral use cases. There are a variety of ways to approach this, one of which is to use the Kubernetes modules provided by NixOS. background: I was recently doing some testing around kind and I’m running NixOS on a Raspberry Pi and I want to set up a Kubernetes cluster on it to play around with. And lastly, container images, which run on Docker vs NixOS: What are the differences? Introduction. 3 -> 1. related Kubernetes posts. nix in some empty directory, paste the snippet above and run it with nix develop. Since getting into NixOS I've been experimenting with using that for Kubernetes, however I probably wont end The NixOS kubernetes module provides an option for automatic certificate bootstrapping and configuration, services. I went ahead and installed it and tried some stuff out. The differences between his project and this. Channel: 24. Most of this project has been realized using kubernetes the hard way tutorial, and another nixos high availability k8s cluster project also based on this tutorial. com/NixOS/nixpkgs/blob/master/pkgs/applications/networking/cluster/k3s/README. igxhev grhtrumz rsue mvqt raase glcxu axkepp epxset gltik fzzme