35 articles tagged with ""docker""
After years of 'just push the image manually', I finally wired up a proper AWS ECR pipeline with GitHub Actions. Build, scan, tag, push, deploy - all automated. Here's the setup I wish I had from day one.
Your pod keeps getting OOMKilled and you have no idea why? After being paged at 3am three times in one week, I finally learned how Kubernetes resource requests and limits actually work — and how to set them without guessing.
Your pod keeps getting OOMKilled at 3am and you have no idea why? After getting paged one too many times, I learned that setting proper CPU and memory limits is the difference between a stable cluster and a production dumpster fire.
Everyone says 'don't use docker-compose in production, use Kubernetes.' After running it in prod for 3 years without incident, I'd like to respectfully disagree — for the right use case.
Liveness and readiness probes are Kubernetes superpowers — until you misconfigure them and watch your app restart itself into oblivion. Here's how to get them right.
Every time you push code and wait 8 minutes for Docker to rebuild from scratch, a kitten cries. Learn how Docker layer caching actually works - and the one ordering mistake that's killing your CI/CD pipeline.
After spending 3 hours debugging why my API container couldn't reach my database container (they were on different networks), I learned Docker networking the hard way. Here's everything you need to know to never waste an afternoon like that again.
That one microservice eating all your CPU? Yeah, it's taking down everything else too. Here's how Kubernetes resource limits save your cluster from itself.
Your Docker builds are slow because you're doing it wrong. Here's how layer caching actually works — and how to make your CI builds go from 10 minutes to 90 seconds.
No resource limits in Kubernetes? One memory leak will take down your entire cluster. I learned this the hard way at 2 AM. Here's how to set requests and limits so your pods play nice with each other.
Your CI pipeline takes 12 minutes to build a Docker image. 11 of those minutes are installing the same npm packages you installed yesterday. Let's fix that with Docker layer caching.
Your app is mysteriously crashing in production, random pods are getting killed, and nobody knows why. After surviving several Kubernetes cluster meltdowns, I learned that forgetting resource limits is like inviting a black hole to your birthday party.
Running Node.js on port 3000 directly? PHP-FPM on 9000? Docker taught me the hard way that exposing raw app ports is the fastest way to get hacked, slowed down, and humiliated. Let Nginx handle the front door.
After shipping a buggy release that took down 100% of users at once, I learned canary deployments the hard way. Here's how to roll out features to 5% of traffic first so your disasters only affect 5% of users.
Your cluster looked fine at 9 AM, then at 2 PM everything went down. No code changes. No deploys. Just one rogue pod that ate all the memory and took everything else with it. Here's how to set resource limits and never experience that panic again.
Your pod is OOMKilled at 3 AM and you have no idea why. After getting paged one too many times, I learned the hard truth about Kubernetes resource limits and requests — and why ignoring them is basically leaving a buffet open for your worst-behaved microservice.
One greedy pod. No resource limits. A cluster brought to its knees at 2 AM. Sound familiar? Here's everything I learned the hard way about Kubernetes requests and limits — and why skipping them is playing Russian roulette with production.
Your Kubernetes pod is running but returning 500 errors to every user — and K8s has no idea. After running production clusters that randomly served disaster to 1 in 3 users, I learned that liveness, readiness, and startup probes are not optional extras. Here's everything you need to know.
Your Kubernetes pods are crashing silently and users are getting 502 errors. After running dozens of production clusters, I learned that misconfigured health probes are the silent killer - here's how to fix them!
Forgot to set resource limits and your whole cluster crashed because one rogue pod ate all the CPU? Been there. Here's the definitive guide to Kubernetes requests and limits so your cluster stays healthy and your pager stays silent.
After countless deployments watching CI pipelines crawl, I finally learned what Docker's layer cache actually is — and how one misplaced COPY instruction was costing us 8 minutes on every single push. Here's how to stop throwing money at slow builds.
Your pods keep dying with OOMKilled and you have no idea why? After surviving countless 3 AM pages from Kubernetes eating my apps alive, I figured out the exact resource limits strategy that keeps pods happy — and your pager silent.
Your Kubernetes pod is 'Running' but returning 503s to every user? After debugging countless production incidents, I learned that liveness, readiness, and startup probes are the difference between real health and a zombie pod that just looks alive.
Your pod is running fine in staging, then dies mysteriously in production. No logs, no warning, just 'OOMKilled'. After getting paged at 3 AM one too many times, here's everything you need to know about Kubernetes resource limits and requests.
Your pods keep getting OOMKilled and you have no idea why? After watching production nodes melt down at 3 AM, I learned the hard way that Kubernetes resource requests and limits are not optional - they're survival gear.
After drowning in Kubernetes YAML for months, I discovered ECS — Amazon's managed container service that lets you run Docker in production without needing a PhD in distributed systems. Here's everything I learned the hard way!
Your pods keep getting OOMKilled and nodes go NotReady at the worst possible moment? After debugging too many production meltdowns, I learned that resource requests and limits aren't optional - they're survival skills.
Your pod randomly dies at 2 AM and you have no idea why? After getting paged at 3 AM more times than I care to admit, I finally learned how Kubernetes resource requests and limits work - and why getting them wrong will destroy your cluster (and your sleep).
After spending an entire afternoon convinced my app was broken, I discovered the real culprit: I was trying to connect containers using localhost like a complete amateur. Docker networking is deceptively simple once you stop fighting it.
After countless deployments where my 'perfectly fine' Docker containers crashed in production, I finally learned what separates a dev Dockerfile from a production-hardened one. Spoiler: it's not just adding HEALTHCHECK at the end.
After 7 years of production deployments, I've been rate-limited by Docker Hub during critical deploys way too many times. Here's how I escaped Docker Hub jail and cut our registry costs by 80%!
After 7 years deploying production apps, I finally bit the bullet and learned Kubernetes. Turns out it's not as scary as the YAML makes it look. Here's what I wish someone had told me before I spent 3 days debugging a typo in my deployment config!
Your Docker image is 2GB and takes 10 minutes to deploy? After countless production deployments, I learned that multi-stage builds can shrink images by 90% - here's how to stop shipping garbage to production!
After 7 years of production deployments, I finally learned: Docker Compose isn't just for deployment - it's the secret weapon for local dev environments that don't suck!
Think throwing your app in a container makes it secure? Think again! Let's talk about Docker security holes that'll keep you up at night - and how to fix them.