Articles

Application containerization

Application containerization thumbnail
Let's imagine a developer building an application on his computer and that this application is meant to be deployed on a different machine (production environment). In order to execute properly, this application requires multiple libraries, binaries and packages. For example, a Python program requires the Python interpreter as well as all the imported Python modules.
DevOpsDockerTutorials

APIs: Why and how

APIs: Why and how thumbnail
From a simplistic point of view, software can be seen as a combination of operations performed on data. Data comes in, gets processed through a series of functions and some result comes out.
WebTutorials

Wireless motion sensor

Wireless motion sensor thumbnail
This is a wireless motion sensor that runs on rechargeable batteries. It can be deployed anywhere and sends a signal using an NRF24L01 wirless module whenever it detects motion.
ElectronicsProjectsArduino

Creating a private docker registry for Kubernetes

A docker registry can be run easily using as a docker container using docker itself.
DevOpsKubernetesDocker

Bash check if environment variable is set

When writing bash scripts, it is sometimes necessary to check if an environment bariable is set.
Bash

Securing an ingress with basic auth

This article describes how to use basic auth to protect an ingress in Kuberentes. It it <a href="https://kubernetes.github.io/ingress-nginx/examples/auth/basic/" rel="noopener noreferrer nofollow">based on this page</a>.
TutorialsSecurityKubernetes

Reducing GitLab memory consumption

The memory consumption of GitLab can be reduced slightly by turning prometheus monitoring off:
GitLab

Microk8s manage SSL certificates DNS entries

Microk8s provides settings to add a custom domain to its DNS settings. This article presents how to do so.
KubernetesMicrok8s

Generic Kubernetes manifest for web application deployment

Deployment name, container registry and service port are externalized, making this manifest general-purpose
KubernetesDevOps

Passing variables to Kubernetes manifest

When using kubectl apply, environment variables in Kubernetes manifests are not parsed. For this to happen, the envsubst command can be used.
KubernetesCI/CDDevOps