38 articles tagged with ""kubernetes""
After accidentally taking down production during a 'quick' deployment, I learned that Kubernetes offers powerful deployment strategies — Rolling, Blue/Green, and Canary — that let you ship code without praying to the uptime gods.
Your app crashes silently, Kubernetes keeps routing traffic to it anyway, and users see 502 errors for 5 minutes before anyone notices. Sound familiar? Liveness, Readiness, and Startup probes exist to prevent exactly this disaster - here's how to use them right.
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.
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.
After years of ssh-ing into servers and running kubectl apply like a caveman, I discovered GitOps and Argo CD. Now my Git repo IS my deployment pipeline, and I haven't manually touched a cluster in months. Here's how it works!
Your cluster is a buffet, not an all-you-can-eat contest. Learn how to set resource requests and limits before your pods go full Cookie Monster on your nodes.
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.
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 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.
Tired of running kubectl apply and praying nothing explodes? After migrating teams to GitOps, I learned that ArgoCD turns your Git repo into a deployment control plane - here's how to stop deploying manually and start deploying confidently!
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!
Still SSHing into your cluster at 2 AM to scale up pods during traffic spikes? After getting paged one too many times, I set up Kubernetes Horizontal Pod Autoscaling — and now my cluster handles Black Friday traffic while I sleep like a baby.
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.
If you're managing Kubernetes apps by duplicating YAML files across environments, I have both bad news and great news. Bad news: you're doing it wrong. Great news: Helm exists, and it will change your life.
By default every pod in your cluster can talk to every other pod. That's basically leaving every door in your office unlocked. After running production Kubernetes clusters I learned that NetworkPolicy is the firewall you absolutely need but nobody tells you about!
Your app gets a traffic spike, your pods fall over, and you're frantically SSH-ing into servers at 3 AM. After painful on-call incidents, I learned that Kubernetes HPA can auto-scale your pods in under 30 seconds - here's how to set it up properly!
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.
Discovered a team committing base64-encoded database passwords directly to their Git repo and calling it 'secure'. Kubernetes Secrets are not as safe as you think — here's how to actually protect sensitive data in your cluster.
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.
After years of SSHing into production servers to 'quickly fix' things and creating configuration drift nightmares, I discovered GitOps. ArgoCD made our cluster self-healing. Here's everything I wish I knew before losing two Fridays to manual kubectl apply sessions.
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.
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.
I once managed three Kubernetes environments by maintaining three near-identical YAML folders. Dev, staging, prod — different by exactly three lines each. Then I discovered Helm and felt simultaneously enlightened and deeply ashamed of my past self.
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 7 years deploying to production Kubernetes clusters, I've seen developers treat ConfigMaps like password managers. Here's why your 'secrets' aren't secret at all - and how to actually protect them!
After countless deployments where I wondered 'wait, which version is running in prod?', I discovered GitOps - where Git isn't just your code repository, it's your deployment control center. Here's why treating Git as your single source of truth changed everything!
After 7 years of production deployments and one very public GitHub leak that cost us $3,000 in AWS charges, I learned that managing secrets isn't optional - it's survival. Here's how to stop hardcoding passwords like it's 2005!
After 7 years of production deployments and countless 3 AM incidents, I learned that health checks aren't optional - they're the difference between 'my app is down' and 'my app auto-heals itself.' Here's how to stop shooting yourself in the foot!
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!
After 7 years of production deployments, I learned the hard way: if you can't see what's happening in your K8s cluster, you're one outage away from disaster. Here's how to actually monitor Kubernetes without drowning in metrics!
Still showing 'Site under maintenance' during deploys? After 7 years of production deployments, here's how I went from scary Friday night releases to confident anytime deploys - without downtime!