--- title: How to Build a Production-Ready DevSecOps Platform from... description: A comprehensive, full-book tutorial for building a production-ready DevSecOps platform from scratch using a fintech transaction ledger as the vehicle. Starting... canonical: https://daily.dev/posts/how-to-build-a-production-ready-devsecops-platform-from-homelab-to-aws-full-book--cgyvwt6vx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to Build a Production-Ready DevSecOps Platform from Homelab to AWS [Full Book] | daily.dev og:description: A comprehensive, full-book tutorial for building a production-ready DevSecOps platform from scratch using a fintech transaction ledger as the vehicle. Starting... og:url: https://daily.dev/posts/how-to-build-a-production-ready-devsecops-platform-from-homelab-to-aws-full-book--cgyvwt6vx og:image: https://api.daily.dev/og/posts/CgYvWt6Vx.png og:image:alt: How to Build a Production-Ready DevSecOps Platform from Homelab to AWS [Full Book] og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How to Build a Production-Ready DevSecOps Platform from Homelab to AWS [Full Book] **[freeCodeCamp](https://daily.dev/sources/freecodecamp)** · 220 min read · 2 upvotes · 1 comments ## Summary A comprehensive, full-book tutorial for building a production-ready DevSecOps platform from scratch using a fintech transaction ledger as the vehicle. Starting from manual Kubernetes deployment on a local homelab (Multipass + MicroK8s), the guide progressively adds CI/CD with GitHub Actions, GitOps with ArgoCD, security scanning (Gitleaks, Semgrep, Trivy, Checkov), admission control with Kyverno, secrets management with Vault, runtime security with Falco, observability with Prometheus/Grafana/Loki, and finally migrates everything to AWS EKS. Each stage introduces a real operational problem before presenting the tool that solves it, building defense-in-depth one layer at a time. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How does Kyverno enforce that container images are signed with Cosign before deployment? Kyverno uses a require-signed-images ClusterPolicy with failurePolicy set to Fail, verifying image signatures against a Cosign public key embedded in the policy YAML. If an image lacks a valid signature from the trusted key, the pod is blocked at admission with a message like 'no signatures found', so it never gets created even if the image can be pulled from the registry. _Teams wiring Cosign into Kyverno admission control track implementation gotchas like this on daily.dev._ ### Why does a Kubernetes pod stay OutOfSync in ArgoCD after a manual kubectl edit? ArgoCD's selfHeal setting continuously compares the live cluster state to what is declared in the Git repository it watches, and reverts any manual change back to match Git within a few minutes. This means a manual kubectl set image or edit gets treated as drift and undone automatically, so the correct way to change a deployment is to commit the change to the Git-tracked infra repo instead of touching the cluster directly. _Developers debugging GitOps drift issues follow ArgoCD self-heal behavior and fixes on daily.dev._ ### What is the difference between HashiCorp Vault agent injection and Kubernetes Secrets for storing app credentials? Vault agent injection stores credentials centrally in Vault and only writes them to a pod's filesystem at container startup via a sidecar, rather than storing them as base64-encoded values in etcd-backed Kubernetes Secret objects checked into Git-adjacent manifests. Base64 encoding used in Kubernetes Secrets is trivially reversible, not encryption, so migrating to Vault removes plaintext-equivalent credentials from Git history and cluster storage entirely. _Engineers comparing Vault against native Kubernetes Secrets weigh trade-offs like these on daily.dev._ ## Community discussion Top comments from developers on daily.dev. **@ytachy** · 0 upvotes > Good lab. I intent to follow. Thank you! ## Similar posts on daily.dev - [Building a Production Style Kubernetes Platform on AWS with Amazon EKS](https://daily.dev/posts/building-a-production-style-kubernetes-platform-on-aws-with-amazon-eks-dh3yqcvc2) · Medium · 3 upvotes · 0 comments - [From OpenTofu to Argo CD: GitLab as your AWS control plane](https://daily.dev/posts/from-opentofu-to-argo-cd-gitlab-as-your-aws-control-plane-onnlhavdf) · GitLab · 3 upvotes · 0 comments - [Building a cloud native internal developer platform with Kubernetes, GitOps, and supply chain security](https://daily.dev/posts/building-a-cloud-native-internal-developer-platform-with-kubernetes-gitops-and-supply-chain-securi-gtwycp0j7) · CNCF · 7 upvotes · 1 comments - [The Pipeline That Thinks: Building an AI-Powered DevSecOps Pipeline on AWS EKS](https://daily.dev/posts/the-pipeline-that-thinks-building-an-ai-powered-devsecops-pipeline-on-aws-eks-kztltafof) · Cloud Native Now · 0 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#aws](https://daily.dev/tags/aws), [#kubernetes](https://daily.dev/tags/kubernetes), [#cicd](https://daily.dev/tags/cicd), [#devsecops](https://daily.dev/tags/devsecops) [View this post on daily.dev](https://daily.dev/posts/how-to-build-a-production-ready-devsecops-platform-from-homelab-to-aws-full-book--cgyvwt6vx) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How to Build a Production-Ready DevSecOps Platform from Homelab to AWS [Full Book]","url":"https://daily.dev/posts/how-to-build-a-production-ready-devsecops-platform-from-homelab-to-aws-full-book--cgyvwt6vx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-to-build-a-production-ready-devsecops-platform-from-homelab-to-aws-full-book--cgyvwt6vx"},"datePublished":"2026-07-27T21:32:40.212Z","dateModified":"2026-09-14T07:40:35.627Z","description":"A comprehensive, full-book tutorial for building a production-ready DevSecOps platform from scratch using a fintech transaction ledger as the vehicle. 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I intent to follow. Thank you!","datePublished":"2026-07-31T11:12:58.020Z","url":"https://daily.dev/posts/CgYvWt6Vx#c-lVRyS8h2S","author":{"@type":"Person","name":"Devy","url":"https://daily.dev/ytachy","image":"https://avatars.githubusercontent.com/u/69612646?v=4"}}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/how-to-build-a-production-ready-devsecops-platform-from-homelab-to-aws-full-book--cgyvwt6vx#faq","mainEntity":[{"@type":"Question","name":"How does Kyverno enforce that container images are signed with Cosign before deployment?","acceptedAnswer":{"@type":"Answer","text":"Kyverno uses a require-signed-images ClusterPolicy with failurePolicy set to Fail, verifying image signatures against a Cosign public key embedded in the policy YAML. If an image lacks a valid signature from the trusted key, the pod is blocked at admission with a message like 'no signatures found', so it never gets created even if the image can be pulled from the registry. 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