Lou Stack Base

A complete record of moving my side project’s backend from AWS EC2 + Docker Compose to GCP Cloud Run, including concept mapping between the two providers, Terraform layering design, federated identity trust boundaries, and every issue caught during code review

Mapping Concepts Between the Two Major Cloud Providers

Both are cloud providers, but their naming and layering differ. Getting the correspondences straight before the move prevents confusion later when configuring resources.

DevOps Learning Notes

After learning K8s core concepts with kind, switching to k3s with a local registry to make local practice closer to production deployment workflows. Also clarifying K8s network isolation mechanisms and why production doesn’t use kubectl set image.

Switching to a More Complete On-Machine Runtime

kind is sufficient for learning concepts, but has several areas far from production:

Operations learning notes

Following the previous post (Cluster, Pod, Deployment), this one covers stable network access, zero-downtime updates, restart-loop behavior, automatic replica scaling, and the troubleshooting workflow you reach for when things go wrong.

Prerequisite: a kind cluster already running a go-api Deployment (3 replicas).

Stable Network Entry Points

Why You Need a Stable Endpoint

Pod IPs are ephemeral — every rebuild gets a new one:

DevOps Learning Notes

Using kind to create a local K8s cluster, understanding Cluster, Node, Pod, and Deployment relationships from scratch, and the core mindset of K8s declarative management

Cluster Composition and Node Roles

A K8s cluster consists of two roles:

DevOps Learning Notes

Hands-on observation notes on Docker fundamentals

Running through several core Docker behaviors, including layer cache hit logic, the difference between container restart and rebuild, image size comparison, and how to verify cgroup resource limits

Legacy Builder vs BuildKit

Modern Docker uses BuildKit as the build engine. The legacy builder has been marked as deprecated.

DevOps learning notes.

This post clarifies Docker core concepts from first principles, including the relationship between image, layer, and container, multi-stage build, and why a container is a Linux process rather than magic.

Read-Only Build Template

An image is a read-only template used to create containers.