Chris Collins
Open Source Way
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Past articles by Chris:
Monitor your home's temperature and humidity with Raspberry Pis and Prometheus
Instrument a Prometheus application with Python on Raspberry Pis to collect temperature sensor data. → Read More
Set up temperature sensors in your home with a Raspberry Pi
It's HOT! I suppose I can't complain too much about living in paradise, but when my wife and I moved to Hawaii last fall, I didn't really think too much about the weather. Don't get me wrong, the weather is lovely pretty much all the time, and we keep our windows open 24/7, but that means it is pretty warm in the house right now in the middle of summer. → Read More
What you need to know about security policies
A security policy is a set of permissions that govern access to a system, whether the system is an organization, a computer, a network, an application, a file, or any other resource. Security policies often start from the top down: Assume nobody can do anything, and then allow exceptions. → Read More
Run Prometheus at home in a container
Keep tabs on your home network by setting up a Prometheus container image. → Read More
How I build my personal website using containers with a Makefile
The make utility and its related Makefile have been used to build software for a long time. The Makefile defines a set of commands to run, and the make utility runs them. It is similar to a Dockerfile or Containerfile—a set of commands used to build container images. → Read More
Create a countdown clock with a Raspberry Pi
Start counting down the days to your next holiday with a Raspberry Pi and an ePaper display. → Read More
Troubleshoot WiFi problems with Go and a Raspberry Pi
Build a WiFi scanner for fun and—well, fun anyway! → Read More
Install a Kubernetes load balancer on your Raspberry Pi homelab with MetalLB
Assign real IPs from your home network to services running in your cluster and access them from other hosts on your network. → Read More
Manage your Kubernetes cluster with Lens
As more workloads are migrated to containerized environments, it becomes challenging to manage those larger numbers of containers and the connections between them and other systems. As the scale and complexity of a containerized environment increase past a human's ability to manage, container orchestration platforms such as Kubernetes become increasingly important. → Read More
Use this script to find a Raspberry Pi on your network
We've all been there. "I'm going to get this Raspberry Pi to try out. They look kinda cool." And then, like tribbles on an Enterprise, suddenly you have Kubernetes clusters and NFS servers and Tor proxies. Maybe even a hotel booking system! → Read More
Provision Kubernetes NFS clients on a Raspberry Pi homelab
Create dynamic persistent volumes on a Raspberry Pi Kubernetes cluster with the NFS-client provisioner. → Read More
Build a Kubernetes cluster with the Raspberry Pi
Kubernetes is an enterprise-grade container-orchestration system designed from the start to be cloud-native. It has grown to be the de-facto cloud container platform, continuing to expand as it has embraced new technologies, including container-native virtualization and serverless computing. → Read More
Add nodes to your private cloud using Cloud-init
Make adding machines to your private cloud at home similar to how the major cloud providers handle it. → Read More
Turn your Raspberry Pi homelab into a network filesystem
Add shared filesystems to your homelab with an NFS server. → Read More
Modify a disk image to create a Raspberry Pi-based homelab
Building a homelab can be a fun way to entertain yourself while learning new concepts and experimenting with new technologies. Thanks to the popularity of single-board computers (SBCs), led by the Raspberry Pi, it is easier than ever to build a multi-computer lab right from the comfort of your home. → Read More
How to manage Go projects with GVM
Manage Go environments, including installing multiple versions and managing modules, with Go Version Manager. → Read More
Working with Kubernetes Secrets and ConfigMaps
Kubernetes Secrets and ConfigMaps separate the configuration of individual container instances from the container image, reducing overhead and adding flexibility. → Read More
Creating a Source-to-Image build pipeline in OKD
S2I is an ideal way to build and compile Go applications in a repeatable way, and it just gets better when paired with OKD BuildConfigs. → Read More
Testing a Go-based S2I builder image
In the third article in this series on Source-to-Image for Golang applications, build your application image and take it out for a spin. → Read More
Designing a Source-to-Image build for a Go application
In my first article in this series about Source-to-Image (S2I), we examined the required files and discussed how the S2I standard works with any programming language, from Python to Ruby to Go. Now let's explore designing an S2I build specifically for a Go application. A disclaimer: I still like to call Go "Golang" even though it's not officially called that. → Read More