DevOps Learning Guide

All things DevOps: processes, best practices, guides and more!

DNS

What is DNS?

Understanding how DNS works

The dig command in Linux

Authoritative vs Recursive DNS Servers: What's the Difference?

DNS Records

Subdomain Delegation

Version Control / Git

Learn Git

Git Branching Strategies

Oh Shit, git! : How to fix mistakes

AWS

Easy Amazon EC2 Instance Comparison

Azure

https://docs.microsoft.com/en-us/azure/cloud-adoption-framework/

Docker

Containerisation Explained

App Containerisation and comparisaon to VMs

Best Practices for writing Dockerfiles

Linux

An introduction to Linux filesystems

Understanding Linux filesystems: ext4 and beyond

An A-Z index of the Linux command line

Understanding /etc/hosts file in Linux

Security

Hardening your HTTP response headers

Restful APIs

Best Practices for Designing a Pragmatic RESTful API

Recommended Tools

CICD:

• TeamCity (CI)
• Octopus Deploy (CD)
• Bitbucket Pipelines
• GitHub Actions

IDE's

• Visual Studio Code
• Atom
• Sublime Text

Git GUIs

• Fork
• Source Tree

RESTful Clients

• Postman

Security Testing

• SSL Labs: SSL Server Testing
• CISOfy/Lynis: Compliance testing (ISO27001/PCI/HIPAA)

Package Managers

• Pip: Python package manager
• npm : Node Package Manager
• Composer: Dependency Manager for PHP
• Homebrew: Package Manager for OSX

Database Clients

• DBeaver: Universal Database Tool
• HeidiSQL: Tools for MySQL and its Forks

Testing

• Sitediff: Site difference
• K6: Load Testing
• WebPageTest: Performance Testing

Site optimisations:

• Tinyjpg: WebP, JPEG and PNG compression
• SVG Converter: Image to SVG format

IaC:

• tflint: Terraform linter
• cfn-format: Cloudformation formatter
• cfn-lint: Cloudformation linter

DNS:

• Dig
• Nslookup

Network:

• Mmap
• traceroute
• tcpdump
• iptables
• netstat

Web Servers:

• NGINX
• Apache

Protocols:

• SFTP
• FTP
• SSH
• SCP
• VNC
• RDP