📰 Dev.to · James Joyner

A surprising share of "the app is down" pages resolve to a name-resolution problem, not a broken...

When a service "can't connect," the app logs and the network rarely tell the same story. tcpdump...

Sometimes you genuinely want Docker Engine as the Kubernetes node runtime — a team standardized on...

This is the mainstream way to run Kubernetes "with Docker" on Ubuntu in 2026: containerd as the...

There's a delightfully literal answer to "Kubernetes with Docker": kind — Kubernetes IN Docker. Each...

minikube is the other "Kubernetes in Docker" option on Ubuntu, and with --driver=docker it runs the...

Amid all the noise about dockershim, one thing got lost: the everyday workflow of building an image...

If you've ever cat-ed a Terraform or OpenTofu state file, you already know the uncomfortable truth:...

I've migrated a few real environments from Terraform to OpenTofu now, and the good news is that a...

I've been running both Terraform and OpenTofu across production infra for a while now, and the number...

Every OpenTofu user hits the same wall of errors eventually, usually at the worst possible moment —...

Over the last while I've been cataloguing production DevOps errors — the exact strings that show up...

Every DevOps engineer has done this dance: you've got a chunk of YAML or a Terraform file that looks...

Your container died and docker ps -a shows something like Exited (137) 4 minutes ago. Nine times out...

Most of what people call "container security" is a short list of defaults you can set in an...

Most people meet Docker networking the same way I did: two containers that should be able to talk to...

A container's writable layer feels like a filesystem, and that's exactly the trap. Write a database...

"It works on my machine" is the oldest joke in software, and containers were supposed to kill it....

Docker is fantastic right up until it throws one of its greasy, context-free error messages at you...

A while back I inherited a service whose Docker image was 1.2GB. Pulls were slow, the CI cache was...

Most Dockerfiles work. That's the problem — "it builds and runs" hides a lot of quiet costs in...

Series #2 of Troubleshooting Kubernetes: every pod 1/1 Ready, dashboards green, users getting 500s. The readiness probe that lied — and how to write one that ca

A 2 a.m. Kubernetes war story — a Multi-Attach error on an RWO PersistentVolumeClaim took a service down. The real fix, and where devopsaitoolkit.com came from.

Docker and Kubernetes aren't competitors — one builds and runs containers, the other orchestrates them. Here's how to tell if you need an orchestrator yet.