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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
Bars showing a node 96 percent requested but 10 percent used, and a new Pod stuck Pending for insufficient CPU.
8 min
InfrastructureIntermediate

Why Your Kubernetes Cluster Is Full at 10% Utilisation

Why a Kubernetes cluster is full at 10% utilisation: the scheduler commits against requests, not usage, and that gap is where most overspend lives. Your dashboards and the scheduler are both right.

#Kubernetes#SRE

Neeraj Jha

179
Diagram: an ML lifecycle from data to train, evaluate, register, deploy and monitor, looping back to retrain on drift.
15 min
DevOpsIntermediate

From DevOps to MLOps and AIOps: What Actually Changes

MLOps and AIOps sound alike and are different jobs. What transfers from DevOps, the one assumption that breaks, and the failure modes worth learning before you need them — with examples.

#MLOps#AIOps#SRE

Neeraj Jha

181
Timeline of an incident: page, acknowledge, mitigate, resolve and review.
10 min
ObservabilityAdvanced

Your First Week On Call: An SRE Incident Response Guide

What to actually do, in order, when a page arrives at 2am for a service you did not write — establishing whether it is real, what changed, and when to escalate.

#SRE#Grafana#Prometheus

Neeraj Jha

212
Diagram: a Helm chart's Chart.yaml, values.yaml and templates rendered into plain Kubernetes YAML and installed as a release.
8 min
ContainersIntermediate

Helm Charts: Packaging Kubernetes Applications

Master Helm charts for Kubernetes — chart structure, values, templates, repositories, environment management, and deployment best practices.

#Kubernetes#Helm

Neeraj Jha

Updated

185

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A Bash script using set -euo pipefail, an ERR trap, a required argument and quoted expansions, each annotated.
9 min
ScriptingBeginner

Shell Scripting for DevOps: Essential Bash Automation

Learn essential Bash scripting for DevOps — variables, conditionals, loops, functions, error handling, cron jobs, and practical one-liners.

#Linux

Neeraj Jha

Updated

159
Diagram: an AWS VPC with an internet gateway, a public subnet holding a load balancer and NAT gateway, and a private subnet holding EC2 instances and RDS.
8 min
Cloud ComputingBeginner

AWS EC2 and VPC: Building Your First Cloud Infrastructure

Step-by-step guide to building your first AWS infrastructure — VPCs, subnets, security groups, EC2 instances, and networking fundamentals.

#AWS

Neeraj Jha

Updated

158
A five-step container hardening list beside a docker run command that drops capabilities and runs read-only.
10 min
SecurityAdvanced

Securing Docker Containers, in Order of What It Buys You

The same ten-item checklist, ordered by the threat each item actually closes — and honest about which three matter most and what none of them protect you from.

#Docker#Linux

Neeraj Jha

Updated

169
Diagram: an Ansible control node running a playbook over SSH against three web hosts from its inventory.
7 min
InfrastructureBeginner

Ansible for DevOps: Automating Server Configuration

Get started with Ansible for server automation — inventory, playbooks, roles, common modules, and best practices for DevOps workflows.

#Ansible#Linux

Neeraj Jha

157
Diagram: traffic from a client through an Ingress to a Service and on to three Pods, with the Service's cluster DNS name.
8 min
ContainersIntermediate

Understanding Kubernetes Networking: Services, Ingress, and DNS

Deep dive into Kubernetes networking — ClusterIP, NodePort, LoadBalancer, Ingress controllers, CoreDNS, and Network Policies explained with examples.

#Kubernetes#Nginx

Neeraj Jha

Updated

220