151 posts tagged with "DevOps"

Your container exits immediately with code 1. Or it starts but the application is unreachable. Or it runs for an hour and then OOMs. Docker gives you powerful debugging tools, but most people only know docker logs. Here is the full toolkit for diagnosing container problems.

You can write perfect YAML manifests, but if you cannot navigate a cluster quickly with kubectl, you will drown during an incident. This post is your combat reference — 40 commands organized by category, each with real examples you can run right now. Bookmark this one.

Still typing passwords every time you SSH into a server? Still memorizing IP addresses? Still copying files with scp one server at a time? SSH is the most used tool in a DevOps engineer's arsenal, yet most people only use 10% of its power. Let's change that.

Terraform's HCL is not a general-purpose programming language, but it is far more powerful than a static config file. You can conditionally create resources, loop over lists and maps, generate repeated blocks dynamically, and build complex data transformations — all without leaving your .tf files. These expressions are what turn a one-off configuration into a reusable platform.

You have built a Node.js API and need it running in production — with SSL, auto-scaling, and zero-downtime deployments. You could spend a week setting up VMs, load balancers, and reverse proxies. Or you could use Azure App Service and deploy in under 5 minutes. Here is the fast path.

Your Git log reads like a diary written by someone having a breakdown: "fix stuff", "WIP", "please work", "final final v2", "asdfjkl". If your future self (or your teammates) cannot understand what happened from reading git log --oneline, you are doing version control wrong.