Day 63 of DevOps: Kubernetes namespace, two tiers, and a pre-seeded root SSH key

A DevOps engineer on day 63 of their challenge describes two tasks from the KodeKloud Engineer platform. The first asks for a Kubernetes namespace called iron-namespace-nautilus containing a frontend Deployment, a MariaDB Deployment, a ClusterIP Service for the database on port 3306, and a NodePort Service exposing the frontend on port 32678. The author notes that every object needs an explicit namespace in its metadata, and that the database is reachable only from inside the cluster because it lacks a Service type. The second task on the Azure side involved installing a root SSH key on a VM, where cloud-init had already written an entry to root's authorized_keys, so adding the key alone did not work. The post is a personal learning log and does not describe a production incident.