Practical guides on Docker, Kubernetes, CI/CD, cloud platforms, and Infrastructure as Code.
How KubeBlocks turns Postgres, MySQL, Redis, and MongoDB into first-class, self-healing Kubernetes resources - and why StatefulSets alone were never enough.
A practical introduction to networking fundamentals: IP addresses, DNS, ports, and how they all fit together in a DevOps context.
A practical introduction to Git: the mental model behind commits and branches, and the everyday commands that make it click.
A practical, no-fluff introduction to Linux for DevOps: the filesystem, permissions, processes, and the everyday commands you'll actually use.
Guessing CPU and memory requests wastes money either way: too low and pods get throttled or killed, too high and you are paying for capacity nobody uses. Here is how VPA and Goldilocks fix that.
Security bolted on at the end of a pipeline catches problems too late. Here is what shifting security left actually means, and which tools cover each stage from code to runtime.
No agents to install, just SSH and Python. Here is how Ansible playbooks, inventory, and roles actually work, and why idempotency is the property that makes it all safe to rerun.
Horizontal Pod Autoscaling works great for stateless apps and terribly for databases. Here is what actually works: read replicas, connection pooling, and knowing what not to automate.
Three tools, each doing one job well: Prometheus collects metrics, Alertmanager decides who to notify, Grafana shows you what happened. Here is how they fit together.
Writing raw Kubernetes YAML for every environment gets old fast. Helm packages it into reusable, versioned charts. Here is how the templating, values, and release model actually work.
Running a database on Kubernetes means solving storage first. Here is how Longhorn provides replicated, snapshot-able block storage, and where it fits for stateful workloads.
GitOps flips the usual CI/CD deploy step on its head - instead of a pipeline pushing to your cluster, a controller inside the cluster pulls from Git. Here’s how Flux does it.
GitLab CI/CD has its own vocabulary and quirks beyond generic CI/CD concepts - runners, DAG pipelines, environments. Here’s what actually matters when you’re building real pipelines.
You don’t need to be a DBA to run Postgres in production - just to understand connection pooling, backups, replication, and two SQL habits that save you the most pain.
A curated set of DevOps interview questions spanning containers, orchestration, CI/CD, cloud, and IaC, with clear, concise answers to help you prepare.
They’re often mentioned in the same breath, but Terraform and Ansible solve different problems. Here’s exactly where each one fits.
All three major clouds can run almost any workload. The real differences show up in pricing models, managed services, and ecosystem fit. Here’s how to actually choose.
Manual deployments don’t scale and don’t stay reliable. Here’s how CI/CD pipelines work, and how to build a simple one from scratch.
Docker gets your app into a container. Kubernetes is what runs that container reliably at scale. Here are the core building blocks explained clearly.
A practical, no-fluff introduction to Docker: what containers actually are, why they matter for DevOps, and how to build and run your first image.
Real scenario-based DevOps questions, hands-on practice, and clear explanations for every answer.