Moin Memon

Infra & DevOps Handbook¶

A practical, source-backed field guide. Every topic follows the same six-part shape — Basics · Cheatsheet · Thumb Rules · Use Cases · Common Issues · Best Practices — so you always know where to look.

How to use this handbook

Use the search bar (top right, or press /) to jump to any command or concept. Toggle dark / light / system with the brightness icon in the header. Each page links to official documentation at the bottom — when in doubt, trust the source.

Foundations¶

Linux ¶

Shell, filesystem, permissions, processes, systemd, and the commands you actually use.

Networking ¶

OSI/TCP-IP, IP & subnetting, DNS, routing, firewalls, and troubleshooting.

Virtual Machines ¶

Hypervisors, VM lifecycle, snapshots, and when to choose a VM over a container.

Proxmox VE ¶

Clustering, storage, backups, LXC vs KVM on an open-source hypervisor.

Configuration Management¶

Chef ¶

Cookbooks, recipes, resources, and the pull-based config model.

Ansible ¶

Playbooks, roles, inventory, and agentless automation.

Containers & Orchestration¶

Docker ¶

Images, containers, Dockerfile, Compose, volumes, and networking.

Kubernetes ¶

Pods, Deployments, Services, config, scaling, and the control plane.

Helm Charts ¶

Templating, releases, values, and packaging Kubernetes apps.

Infrastructure as Code & Observability¶

Terraform ¶

HCL, state, modules, and providers for AWS, GCP, Azure, and Proxmox.

Prometheus ¶

Metrics, PromQL, exporters, alerting, and the pull model.

Grafana ¶

Dashboards and case studies across infra, project management, BI, and industry.

This handbook is maintained by Moin Memon. Content is distilled from official documentation and field experience; always validate against the linked official sources for your specific version.