Run Backstage with Keycloak SSO on Ubuntu (Without Docker, Minimal Changes)
The official Backstage docs are excellent and very complete. They also move fast: Docker images, Postgres, Kubernetes, and a lot […]
DevOps & Software Delivery
Engineering field notes
Practical DevOps, Infrastructure, and Platform Engineering Notes
Tested walkthroughs from real lab and production-style setups across Linux, cloud, Kubernetes, networking, security, observability, data platforms, IoT, Android, and self-hosted services.
Web Platforms & Applications
Understand Node.js, nvm, npm, npx, Yarn, and Corepack: Who Does What?
When you start working with modern JavaScript tooling, you immediately run into a bunch of names: Docs casually say things
Data Platforms & Analytics
How to Install PostgreSQL on Ubuntu 24.04 (Ubuntu Repo vs PostgreSQL Repo)
Ubuntu 24.04 ships PostgreSQL in its own repositories (PostgreSQL 16 at the time of writing). The PostgreSQL Global Development Group
IoT & Embedded Systems
Deploy ThingsBoard CE on a 3-Node Bare-Metal Kubernetes Cluster
This post shows how I deployed ThingsBoard Community Edition (microservices, hybrid DB) on my existing 3-node bare-metal Kubernetes cluster, using:
DevOps & Software Delivery
Run Dynamic Jenkins Agents on a Bare-Metal Kubernetes HA Cluster
In a previous post, I built a 3-node HA Kubernetes cluster on bare-metal Ubuntu 24.04 with: In this guide, I’ll
Containers & Kubernetes
Use External Ceph RBD as Dynamic Storage in Kubernetes
In previous posts, we: This post is the next step: use that same Ceph node as dynamic block storage for
Identity, Security & PKI
Enable HTTPS for Traefik on Bare-Metal Kubernetes with a Wildcard Let’s Encrypt Certificate (cert-manager + Cloudflare DNS-01)
In a previous post, We have a Kubernetes cluster that exposes HTTP for through Traefik and MetalLB. In this follow-up,
Containers & Kubernetes
Use Amazon EBS as Persistent Storage in a Self-Managed Kubernetes Cluster on EC2
This post extends and shows how to add Amazon EBS as persistent storage using the AWS EBS CSI driver. You’ll
Containers & Kubernetes
Build a 3-Node Self-Managed Kubernetes Cluster on AWS EC2
This guide shows how to build a 3-node Kubernetes cluster on AWS EC2 where: We do not use: Instead, we
Containers & Kubernetes
Build a 3-Node HA Kubernetes Cluster with kube-vip, MetalLB, and Traefik on Bare-Metal Ubuntu 24.04
This guide builds a 3-node Kubernetes cluster on bare-metal Ubuntu Server 24.04, where: Everything is done with kubeadm and containerd.