DevOps - Full Stack Quest Labs

Sealed Secrets on K3s (Vagrant/VirtualBox): A Practical, Step-by-Step Guide with Troubleshooting

In this tutorial you’ll deploy Bitnami Sealed Secrets on a three-node K3s cluster running in Vagrant/VirtualBox, generate the public key,[…]

In this tutorial you’ll manually install a minimal k3s Kubernetes cluster on three Ubuntu 22.04 VMs provisioned by Vagrant/VirtualBox. We’ll[…]

A clean, reproducible VirtualBox lab is the fastest way to learn Kubernetes the right way—by breaking things safely. In this[…]

Goal: have Argo CD manage our GitOps paths end-to-end and make the pipeline fully idempotent via Ansible. Today looked simple[…]

Today we closed the loop on TLS by exporting live Kubernetes resources (our ClusterIssuer, the Certificate, and the NGINX Ingress[…]

Today we finished the transition from a manually managed TLS secret to an automated, GitOps-friendly setup driven by cert-manager. Our[…]

Goal: Stop creating TLS secrets by hand and keep them encrypted in Git. Also enable k3s-master to push changes back[…]

Today we rolled out Bitnami Sealed Secrets to our k3s cluster using Helm, hit a snag with the kubeseal CLI[…]

In Day 11 we wired Argo CD to a private GitHub repository via SSH, validated connectivity from the argocd-repo-server pod,[…]

Goal: Install Argo CD via Helm, expose it through Traefik with mkcert TLS, and bootstrap a first GitOps Application that[…]