Kubernetes on iMil.net

NetBSD as a Kubernetes Pod

Mon, 23 Oct 2023 11:46:31 +0200

2025/01 Update https://github.com/NetBSDfr/smolBSD/tree/main/k8s

I had to do it.
So here’s how to run a NetBSD micro-vm as… a Kubernetes pod.

First thing is to modify the start script from the previous article in order to add Docker-style networking, i.e. port forwarding from the host to the micro-vm. This is done using the hostfwd flag in qemu’s -netdev parameter

#!/bin/sh

kernel=$1

img=${2:-"root.img"}

[ -n "$3" ] && drive2="-drive file=${3},if=virtio"

qemu-system-x86_64 -enable-kvm -m 256 \
        -kernel $kernel -append "console=com root=ld0a" \
        -serial mon:stdio -display none \
        -drive file=${img},if=virtio $drive2 \
        -netdev user,id=net0,hostfwd=tcp::8080-:80 -device virtio-net,netdev=net0

In the previous experience we mapped the kernel and the root image from the host using Docker’s -v parameter, and while it’s possible to map files from the host using a Kubernetes volume, we will bundle NetBSD these files into the Docker image to make things easier.
Please refer to mksmolnb documentation to learn how to produce a minimal nginx micro-vm.

Cleaner micro Kubernetes on OSX

Mon, 04 Feb 2019 15:41:17 +0000

While my main workstation is a Linux Mint machine, I occasionally use my OSX ${WORK} laptop for traveling and composing. I’m not really fond of the OS, but at least it’s an UNIX-like, and pkgin runs well with it ;)
When I’m “on the go”, I like to try things and play along with technologies I’m currently obsessed with, among them Kubernetes.
On OSX, the natural choice is to go with minikube, it’s kind of integrated and does the job well, but if you tried it already and also happen to run docker for OSX you might have found yourself struggling with versions and consistency between the two. Added to this that I wanted to have a fully functional Linux virtual machine, preferably Debian GNU/Linux, there was way too much inconsistencies and wasted disk and CPU space to come. So I dug by myself and found a clean and fast solution by spawning my own virtual machine using OSX native hypervisor, which runs Canonical’s microk8s, a nicely done snap package to install a fully working and modular Kubernetes cluster on a Linux machine.

Kubernetes under my desk

Tue, 16 Oct 2018 14:52:05 +0000

I’m diving into Kubernetes for a couple of months now. Discovering the possibilities and philosophy behind the hype definitely changed my mind. Yes, it is huge (in every sense ;) ) and it does change the way we, ex-sysops / ops / syasdmins do our work. Not tomorrow, not soon, now.

I’ve had my hands on various managed kubernetes clusters like GKE (Google Container Engine), EKS (AWS Elastic Container Service) or the more humble minikube but I’m not happy when I don’t understand what a technology is made of. So I googled and googled (yeah sorry Qwant and duckduckgo I needed actual answers), until I found >many >incredibly >useful resources.