151 posts tagged with "DevOps"

It is 3 AM. Your phone buzzes with a PagerDuty alert: "CPU usage above 90%." You drag yourself out of bed, SSH into the server, and discover the CPU spike was caused by a log rotation cron job that runs every night. It resolved itself two minutes later. This happens three times a week. You start ignoring alerts. Then one night, the database actually fills up and takes down production. Nobody notices for 47 minutes because the team has learned to silence their phones.

You have a ClusterIP Service. You have a NodePort Service. You even have a LoadBalancer Service. But the moment you need path-based routing, virtual hosts, or TLS termination for multiple apps behind a single IP, Services alone fall apart. That is where Ingress takes over.

Server says disk full but you see 50% free — here's what's actually happening. Disk management is one of those skills you don't think about until a production server runs out of space at 2 AM. Let's make sure you're ready when that happens.

You have been writing Terraform for a while now. Your main.tf started at 50 lines, grew to 200, then 600, and now nobody wants to touch it. Worse, every new project copies the same VPC, subnet, and security group blocks with minor tweaks. Modules solve both problems: they let you package infrastructure into self-contained, versioned, shareable components — like functions in a programming language.

Imagine deploying code without provisioning a single server, without patching an OS, without worrying about scaling, and paying nothing when nobody's using it. That's Lambda. And once you build your first function, you'll wonder why you ever managed EC2 instances for simple workloads.

Your CI/CD pipeline deploys 15 times a day. It also has zero tests. Every deploy is a coin flip. You find out about bugs when customers tweet angry messages at your company. This is not DevOps — this is chaos with automation.