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Diagram: a Deployment owns a ReplicaSet that keeps three Pods running on nodes, with a Service selecting them by label.
Featured

Kubernetes 101: The One Idea, Then the Nouns

Kubernetes explained through the control loop under Pods, Deployments and Services, so you can predict what the cluster will do, not just name its parts. Most introductions stop at the nouns.

Neeraj Jha·7 min read
Diagram: a GitOps controller watches a Git repository, applies it to the cluster and reports drift.
6 min
DevOpsAdvanced

GitOps: The Modern Way to Manage Kubernetes Deployments

Learn GitOps principles and implement them with ArgoCD — automated Kubernetes deployments driven by Git pull requests.

#GitOps#Kubernetes#Helm

Neeraj Jha

505
Diagram: nginx terminating TLS for a client and proxying to three upstream application servers.
7 min
InfrastructureIntermediate

Nginx as a Reverse Proxy: The Config, and What Breaks

The six lines that proxy, the four headers most examples omit, and the three failures a reverse proxy actually produces — 502, 504 and the 499 nobody receives.

#Nginx#Linux#SRE

Neeraj Jha

529
Diagram: Prometheus scraping metrics from exporters and an app, feeding Grafana dashboards and Alertmanager.
7 min
MonitoringBeginner

Monitoring Your Infrastructure with Prometheus and Grafana

Set up a production-grade monitoring stack with Prometheus and Grafana — metrics collection, PromQL queries, alerting, and dashboards.

#Prometheus#Grafana#Docker

Neeraj Jha

Updated

489
Terminal showing ss, journalctl, df and du, ps and dmesg commands, ending with a kernel out-of-memory line.
7 min
DevOpsBeginner

Linux Commands Every DevOps Engineer Must Know

A practical reference of essential Linux commands for DevOps — file operations, text processing, networking, process management, and more.

#Linux#SRE

Neeraj Jha

Updated

485

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Diagram: a Terraform resource block going through plan and apply, with the state file read by plan and written by apply.
10 min
InfrastructureBeginner

Infrastructure as Code with Terraform: State, Modules and CI

Learn Infrastructure as Code with Terraform — from your first resource to production-ready modules, state management, and CI integration.

#Terraform#AWS#CI/CD

Neeraj Jha

Updated

418
Diagram: a git push starting a GitHub Actions workflow whose build, test and lint jobs feed package and then deploy.
8 min
CI/CDBeginner

Setting Up a CI/CD Pipeline with GitHub Actions

Build a complete CI/CD pipeline with GitHub Actions — from running tests on every PR to automated production deployments.

#GitHub Actions#CI/CD

Neeraj Jha

435
Diagram: a Deployment owns a ReplicaSet that keeps three Pods running on nodes, with a Service selecting them by label.
7 min
ContainersIntermediate

Kubernetes 101: The One Idea, Then the Nouns

Kubernetes explained through the control loop under Pods, Deployments and Services, so you can predict what the cluster will do, not just name its parts. Most introductions stop at the nouns.

#Kubernetes#Docker#Helm

Neeraj Jha

Updated

599