I used OpenShift, through the Red Hat Developer Sandbox, as the only hands-on environment for a 6-session course on cloud native and microservices architecture. The best part is how quickly people get started: a shared OpenShift cluster with its own namespace, the web console and the oc CLI, all free, from the browser, with nothing to install. Participants had a real cluster in the first session, not a simulation. Deploying from source or from an image, Services and Routes, ConfigMaps and Secrets, the Horizontal Pod Autoscaler, OpenShift Pipelines (Tekton) and Dev Spaces all worked in the sandbox. That meant I could link Kubernetes objects people already knew to the architectural reasons behind them. Building one application step by step, from a monolith to microservices with asynchronous messaging and GitOps-style delivery, worked well on this platform. Review collected by and hosted on G2.com.

The Developer Sandbox has limits you need to plan for. You can’t install operators, so OpenShift Service Mesh and AMQ could only be taught as concepts. You don’t get cluster-admin rights, so some NetworkPolicy exercises weren’t possible. Pods stop after 12 hours, and the 30-day trial is shorter than a course with weekly sessions. I worked around it by keeping every manifest in Git so the environment could be rebuilt in minutes. The full-control alternative, OpenShift Local, needs 4 cores, 16 GB of RAM and 35 GB of disk, which corporate laptops often can’t provide. Review collected by and hosted on G2.com.