Vegards Blog

Vegards Nerderier og andre innlegg

Kategori: Networking

  • A tiny peek into the world of ZigBee.

    I have a bunch of hue lights and some hue dimmers at home. Because I was cheap and didn’t want to buy too many dimmers, I decided to make each 4-button dimmer into 4 one-button dimmers, with the functions press for toggle and hold for dim up and then turn to dim down when max…

  • Kubernetes DR Part 2: Building infrastructure applicationsets for my clusters.

    Having installed a new cluster including getting ArgoCD to run, it’s time to think about deploying some applications. From earlier, I have simple applications that are very much tailored to running on my already existing cluster: Setting up a DR cluster, I need to make my DR cluster creating similar applications with some properties changed.…

  • The road to enterprise at home: A DR-test!

    I’ve had some issues with my kubernetes-node, basically a few random crashes. A bit inconvenient as it’s summer-time. As I am writing this, I am at our cabin and the kubernetes-node is down. But wait a minute? Doesn’t the blog run on kubernetes? Yes, it does. But I do have backup. A while back, I…

  • Summing it up! Setting up a web site in 10 minutes.

    During the previous months, I have created a lot of infrastructure in Kubernetes. This is stuff that just makes things work if I just configure things correctly. So, I thought I should just go and deploy a simple service, Supermario, that lives on https://github.com/GuopingJia/k8s-games/tree/main/super-mario I like to run a all my things in a namespace,…

  • Kubernetes for geeks: Creating your own Kubernetes Operator

    ,As I promised in Kubernetes tip of the day – external-dns, here is the writeup of my automations of firewall openings. As the methods of configuration, and features of, firewalls are more varied than DNS, I quickly realized that this needed to be something built explicitly for Unifi. I had a brief look at The…

  • BGP part three – eBGP between a VPS and on-prem

    In my last blog post, I described setting up a VPN tunnel between my home network and the VPS. This is thus the prerequisites for this post, I have a working VPN connection with point-to-point-connections You also need to make sure that firewall rules doesn’t block the traffic, in particular we need port 179 for…

  • BGP part two – A VPN connection to the cloud.

    As promised in my last blog post, here is part two of my BGP series. I’ve decided to split it into two, one covering the VPN, and another one covering the BGP end of it. So this one isn’t actually about BGP, it is about IPSEC. I am running services at home – but that…

  • My Unifi Gateway just learned to do BGP!

    …and I was like a kid on christmas eve! Just couldn’t want to get my hands on it to play. BGP is a much used routing protocol on internet. A routing protocol is basically when network components starts talking to each others, announcing «hey, I know how to reach 192.168.250.16! And the other router will…

  • Kubernetes at Home: Internal and external services

    Disclaimer: Separating at a hardware level will always be better. But my home lab consists of exactly one server, so I focus on what I can do in software in Kubernetes. So far, I have configured all my services to be exposed to the internet, no matter if they are for external or internal consumption.…

  • Kubernetes@Home – what do you do if your ISP changes your IP addresses?

    In my last blog post I described external-DNS, which is a way to have Kubernetes create and update DNS entries for its services. But as I mentioned, it got me thinking a bit on ways to extend this concept to handle other external aspects of my Kubernetes environment. My ISP is in total control over…