Published inITNEXT·PinnedBuild an MS-DOS games emulator on KubernetesBuild your very own Kubernetes MS-DOS games emulator using js-dos JavaScript library and play retro games in your browser. TL;DR In this article we are going to explore how we could integrate js-dos JavaScript library in a custom Kubernetes solution that would allow us to expose MS-DOS games as Kubernetes services…Kubernetes14 min readKubernetes14 min read
Published inBetter Programming·PinnedKubernetes Observability Part 1: Events, Logs, and Integration With Slack, OpenAI, and GrafanaBuild a Kubernetes custom controller to watch Kubernetes Events and forward them to Grafana Loki using Promtail — TL;DR: Build a Kubernetes custom controller with Kubebuilder to watch Kubernetes Events, push them to Grafana Loki with Promtail, and visualize their data and metrics on a Grafana Dashboard. Introduction In this article series, we will explore a one-stop-shop Observability solution for Kubernetes, where a custom Controller does the following:Kubernetes10 min readKubernetes10 min read
PinnedKubernetes Logging with Grafana Loki & Promtail in under 10 minutesConsolidate all your Kubernetes logs in a intuitive Grafana dashboard. What is the goal? After completing this lab, we will have consolidated all the logs generated in our Kubernetes cluster in a tidy, neat, real-time dashboard in Grafana. What are we going to need? We are going to need a: Kubernetes cluster. Grafana installation. Grafana Loki installation. Promtail agent on…Kubernetes8 min readKubernetes8 min read
Pinnedrekuberate-io/sleepcycles: An automated way to reclaim your unused Kubernetes resourcesDefine sleep & wake up cycles for your Deployments, CronJobs, StatefulSets and HorizontalPodAutoscalers. TL;DR: Define sleep & wake up cycles for your Kubernetes resources. Automatically schedule to shutdown Deployments, CronJobs, StatefulSets and HorizontalPodAutoscalers that occupy resources in your cluster and wake them up only when you need them, reducing that…Kubernetes7 min readKubernetes7 min read
Published inITNEXT·Oct 21Kubernetes multi-cluster implementation in under 10 minutesBuild a mesh of Kubernetes clusters with Cilium ClusterMesh and KIND TL;DR After completing this lab, you will have a multiple-cluster Kubernetes environment running as containers in your local development machine. What do we need? It is strongly advised to run this lab on a Linux machine, my choice was Ubuntu, as Docker Desktop on…Kubernetes9 min readKubernetes9 min read
Jul 26Install Kubernetes 1.27 with Cilium on UbuntuStep by step installation of a Kubernetes 1.27 Cluster, with 3 workers and 1 master nodes, on Ubuntu with Kubeadm and Cilium as CNI What is the goal ? After completing all the steps below, you will have a Kubernetes 1.27 Cluster running on Ubuntu supported by Cilium as CNI. What do we need ? 4 virtual machines on the…Kubernetes8 min readKubernetes8 min read
Jul 2Solve Bluetooth problems on UbuntuSolve connectivity and discovery problems of Bluetooth dongles that use the Realtek RTL8761B chip. There is a documented bug on Ubuntu (Jammy, Kinetic and Lunar) concerning bluetooth dongles that make use of the Realtek RTL8761B chip that can really drive you nuts. …Ubuntu3 min readUbuntu3 min read
Jul 2Solve VirtualBox problems after upgrading to latest Linux kernel on Ubuntu 22.04Solve the “Kernel driver not installed (rc=-1908)” issue that blocks from starting virtual machines after a kernel upgrade One side-effect that I discover immediately after upgrading to the latest Linux kernel on my Ubuntu 22.04 (from 5.19 to 6.2) was a persistent error that was prohibiting me from starting any…Ubuntu3 min readUbuntu3 min read
Jun 6Configure path-based routing with Nginx Ingress ControllerExpose your homelab’s Kubernetes services to a public-facing domain with Nginx Ingress Controller and Nginx Proxy Manager as a reverse proxy. TL;DR: By using Nginx Ingress Controller and Nginx Proxy Manager, you can make your Kubernetes services in a homelab accessible through a public-facing domain. Nginx Ingress Controller acts as…Kubernetes Ingress11 min readKubernetes Ingress11 min read
May 10Kubernetes Observability Part 3: Events, Logs & integration with Slack, OpenAI and GrafanaBuild an interactive Slack message and investigate the root cause of a Kubernetes Events with the help of OpenAI Chat API. TL;DR: Make an interactive Slack message that communicates with the Kubernetes custom controller via WebSockets and prompt OpenAI API in order to provide solutions for Kubernetes Events. Introduction In this…Kubernetes10 min readKubernetes10 min read
