How a Solo Engineer Runs a Full‑Stack SaaS on Kubernetes
This article details how a single‑person startup leverages Kubernetes on AWS EKS to handle load balancing, automatic DNS, TLS, autoscaling, monitoring, alerting, secret management, and CI/CD for a Django‑based SaaS, illustrating practical configurations, code snippets, and infrastructure‑as‑code patterns.
Infrastructure Overview
The SaaS runs on AWS EKS with all services containerised in a single cluster. The stack consists of a Django monolith, PostgreSQL (app DB), ClickHouse (analytics), Redis (caching), Celery workers + beat (background jobs), and a Next.js container for static pages. Terraform provisions cloud resources (VPC, RDS, EKS, S3, IAM) and Kubernetes manifests are stored in a monorepo.
Ingress, DNS, TLS and CDN
Traffic enters via ingress-nginx with Cloudflare external‑DNS integration. Example Ingress manifest:
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
namespace: example
name: example-api
annotations:
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Liangxu Linux
Liangxu, a self‑taught IT professional now working as a Linux development engineer at a Fortune 500 multinational, shares extensive Linux knowledge—fundamentals, applications, tools, plus Git, databases, Raspberry Pi, etc. (Reply “Linux” to receive essential resources.)
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