Deep dives on Cloud, DevOps, AI, and everything in between.
The final part: a practical troubleshooting reference for the certificate errors you actually hit — untrusted CA, hostname/SAN mismatch, expired certs, broken chains, the 502/503 backend re-encryption trap, and cert-manager issues.
Secure traffic into a Kubernetes cluster — Ingress routing, TLS termination at the controller, mutual TLS with client certificates, and automating cert issuance with cert-manager.
The real-world TLS topics tutorials skip: certificate file formats, revocation (CRL/OCSP/stapling), free automated certificates with Let's Encrypt and ACME, and HSTS.
Build a real corporate certificate chain with OpenSSL — root → intermediate → leaf — generate a CSR, handle Subject Alternative Names (and the extension-stripping gotcha), and trust your CA in the browser.
Certificate types, what a CSR is, the standard certificate workflow, and a hands-on: create a self-signed certificate with OpenSSL and enable TLS on nginx.
How the TLS handshake works — the classic RSA model and the modern TLS 1.2/1.3 reality with forward secrecy — plus TLS versions, cipher suites, and SNI.
What HTTPS is, what a certificate contains, how CAs create trust through signing, the root/intermediate chain, PKI, and the three certificate types (public, corporate, self-signed) compared.
Why plain HTTP is unsafe, and the cryptography foundations behind TLS: cryptography vs encryption, hashing, and symmetric vs asymmetric keys.
The engineers using AI the most aren't always getting better — the ones using it passively are getting duller. Here's the honest self-audit every DevOps engineer should run.
CNCF broke the news. This post answers the question everyone's actually asking: what do I do now?
A Saturday-night oncall. A cascading Redis failure. A bottom-up investigation. And the moment I realised that no amount of LLM magic replaces an engineer who truly understands the system.
AWS just shipped a DevOps agent that investigates incidents, fixes production bugs, and writes root-cause analysis — while you sleep. Here's what it means for your career.