Raymii.org

One of my all time favorite calculators is the [HP 16C] (https://en.wikipedia.org/wiki/HP-16C).

The emulation space is going crazy, after my previous [post on Windows booting on DEC Alpha es40 emulator](/s/blog/Run_Windows_2000_for_Dec_Alpha_on_a_new_es40_fork.html), there is now another huge breakthrough in the emulation of other non-x86 CPU emulat…

As you might know, I'm involved a bit in the [OpenVMS](/s/tags/openvms.html) community and the [Alpha emulation side via AXPBox](/s/blog/AXPBox-version-1.0.0-released.html).

I've got a [long](/s/articles/Get_Started_With_The_Nitrokey_HSM.html) [history](/s/tags/hsm.html) [with](/s/tags/yubikey.html) [hardware security modules](/s/articles/Nitrokey_HSM_web_cluster.html), both professionally and for fun.

Ansible recently stopped working on one of my older servers.

Proxmox VE is a virtualization platform, like VMWare, but open source, based on Debian.

I recently found a Navman Bike 1000 in a thrift store for EUR 10.

In this post, we'll walk through a fully declarative, Kubernetes-native setup for running a highly available MQTT broker using Eclipse Mosquitto.

I'm pleased to announce the next version of Leaf Node Monitoring, the simple and easy to use open source site and server monitoring tool.

For almost 5 years I've been using the `mqtt-data-logger` [python script](https://github.com/RaymiiOrg/mqtt-data-logger) to log all MQTT communication.

As of the 18th of February, OpenVMS, known for its stability and high-availability, 47 years old and ported to 4 different CPU architecture, has a package manager!

I'm using the Headlamp dashboard for my [high-available local kubernetes cluster](/s/tutorials/High_Available_k3s_kubernetes_cluster_with_keepalived_galera_and_longhorn.html) because I find that to be faster, more clear and useful than the full blown Kube…

This is the result of my first attempt at learning KiCad during the Christmas break.

You probably recognise this situation.

Sherlock Holmes tackles a modern computing dilemma involving a missing system call.

I recently faced a challenging issue with an application that wasn't shutting down correctly, either segfaulting or terminating without an active exception.

Since [DECWindows / CDE](/s/blog/OpenVMS_x86_E9.2-3_fixes_CDE_and_adds_Guest_Console.html) now works on OpenVMS x86 (from 9.2-3 onwards) there is much fun stuff to do.

I'm a big fan of OpenVMS.

This guide shows you how to use Role-based access control (RBAC) to create a user account that only has rights for one specific namespace.

If you have [set up a Self Signed Root CA](/s/tutorials/Self_signed_Root_CA_in_Kubernetes_with_k3s_cert-manager_and_traefik.html) for your local Kubernetes Cluster and have trusted the Root Certificate, you are at risk if the key is compromised.

Now that I'm learning Kubernetes for a few weeks, I'm finally at the point where I was 20 years ago with regular boring old tech, being able to [host multiple domains](/s/tutorials/Kubernetes_k3s_Ingress_for_different_domains_like_virtual_hosts.html), [pa…

The `openssl x509` command can be used to get information from a certificate.

Now that I have a [high-available local kubernetes cluster](/s/tutorials/High_Available_k3s_kubernetes_cluster_with_keepalived_galera_and_longhorn.html) and am [experimenting with deploying apps](/s/snippets/Using_nodeSelector_to_deploy_a_Kubernetes_Helm_…

I'm pleased to announce the next version of Leaf Node Monitoring, the simple and easy to use open source site and server monitoring tool.

My [k3s cluster](/s/tutorials/My_First_Kubernetes_k3s_cluster_on_3_Orange_Pi_Zero_3s_including_k8s_dashboard_hello-node_and_failover.html) runs on Orange Pi Zero 3 small board computers, with a 1.5 GHz Allwinner H618 Quad-Core Cortex-A53 ARM64 CPU.

Now that I have a [high-available local kubernetes cluster](/s/tutorials/High_Available_k3s_kubernetes_cluster_with_keepalived_galera_and_longhorn.html) it's time to learn not just managing the cluster but actually deploying some services on there.

After my [first adventure with Kubernetes](/s/tutorials/My_First_Kubernetes_k3s_cluster_on_3_Orange_Pi_Zero_3s_including_k8s_dashboard_hello-node_and_failover.html), getting started with k3s on my small 3 node ARM cluster that [boots via PXE / NFS](/s/tut…

I've been working as an embedded C++ developer for over 5 years now so my sysadmin / devops skills are becoming a bit rusty.

Because I wanted to experiment with Kubernetes I bought a few cheap SBC's and a Power over Ethernet switch to run `k3s`.

I'm pleased to announce the next version of Leaf Node Monitoring, the simple and easy to use open source site and server monitoring tool.

Recently I was gifted a T65 rotary telephone.

Adding [properties to QObject based classes](https://web.archive.org/web/20240529180113/https://doc.qt.io/qt-6/properties.html) is cumbersome.

I recently had to setup a Windows development environment with Qt 5.15.

The [Atgames Legends Pinball Micro](https://web.archive.org/web/20240123213954/https://www.atgames.us/products/legends-pinball-micro) is a small virtual pinball cabinet for around USD 350.

Which Root Certificates should you trust?

The [YouLess](https://youless.nl/home.html) is a device that can help you monitor energy usage.

Recently I got an email from Google regarding the API level of [Leaf Node Monitoring](https://leafnode.nl), my open source monitoring app for Windows, Linux and Android.

Qt has no `Circle` built in to QML as a basic type, as for example the `Rectangle` or the `Button` control.

This is a static site, meaning that no server-side processing occurs.

I like to tinker with old hardware.

This guide shows you how to run `Vi` without an operating system, bare metal.

This article shows you how to install HAProxy on OpenVMS 9.2 for x86.

OpenVMS on x86 is now available for hobbyists!

OpenVMS on x86 is now available for hobbyists!

OpenVMS on x86 is now available for hobbyists!

OpenVMS x86 is now available for (most) hobbyists!

A small site update this time, just to let you know that I've added a cookie consent popup to this static site.

During a recent code review I found a hard to spot bug, a misplaced parenthesis in an `if` statement.

I've seen many C++ code bases where there was the concept of a service locator.

Recently a few of my Ubuntu 20.04 and Debian 11 servers failed to run an `apt update` because it insisted that the HTTPS certificate for a repository could not be validated, while `curl` on the same system had no issues connecting.