"Knowledge is powerful, be careful how you use it!"

A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools, and more.

📔  What is it?

This repository is a collection of various materials and tools that I use every day in my work. It contains a lot of useful information gathered in one piece. It is an invaluable source of knowledge for me that I often look back on.

🚻  For whom?

For everyone, really. Here everyone can find their favourite tastes. But to be perfectly honest, it is aimed towards System and Network administrators, DevOps, Pentesters, and Security Researchers.

ℹ️  Contributing

If you find something which doesn't make sense, or something doesn't seem right, please make a pull request and please add valid and well-reasoned explanations about your changes or comments.

A few simple rules for this project:

• inviting and…

An updated and organized reading list for illustrating the patterns of scalable, reliable, and performant large-scale systems. Concepts are explained in the articles of prominent engineers and credible references. Case studies are taken from battle-tested systems that serve millions to billions of users.

If your system goes slow

Understand your problems: scalability problem (fast for a single user but slow under heavy load) or performance problem (slow for a single user) by reviewing some design principles and checking how scalability and performance problems are solved at tech companies. The section of intelligence are created for those who work with data and machine learning at big (data) and deep (learning) scale.

If your system goes down

"Even if you lose all one day, you can build all over again if you retain your calm!" - Thuan Pham, former CTO of Uber. So, keep calm and mind the availability and stability matters!

Awesome Cloud Native Trainings

It started as a post in Medium where I was collecting all the free trainings with and without certificates that were released for different companies supporting Cloud Native Computing Foundations Projects and Kubernetes.

Whether you are studying for a Kubernetes Certification or powering your career as DevOps Engineer / SRE, this set of trainings could prepare you well to face many Cloud Native applications challenges

Trainings with Certifications

Cockroach Labs

• Introduction to Serverless Databases and CockroachDB Serverless - Course + Certificate

IBM Coginitive Class

• Docker Essentials - Course + Badge
• Building Cloud Native and Multi Cloud Applications - Course + Certification

Harness

• Harness Chaos Engineering Practitioner - Course + Certificate

Ambassador Labs

• Summer of Kubernetes - Labs + Challenges + Prizes

Nirmata

• Kyverno Fundamentals - Introduction Course + Certification

IBM

• Build Smart on Kubernetes - Labs + Credly Badge

Tetrate Academy

• Envoy Fundamentals - Course +…

ℹ️  This repo contains questions and exercises on various technical topics, sometimes related to DevOps and SRE

📊  There are currently 2402 exercises and questions

📚  To learn more about DevOps and SRE, check the resources in devops-resources repository

⚠️  You can use these for preparing for an interview but most of the questions and exercises don't represent an actual interview. Please read FAQ page for more details

🛑  If you are interested in pursuing a career as DevOps engineer, learning some of the concepts mentioned here would be useful, but you should know it's not about learning all the topics and technologies mentioned in this repository

📝  You can add more exercises by submitting pull requests :) Read about contribution guidelines here

DevOps	CI/CD	Git	Ansible	Network	Linux
Software Development	Python	Go	Shell Scripting	Kubernetes	Prometheus
Cloud	AWS	Azure	Google Cloud Platform	OpenStack	Security
Operating System	Monitoring	Elastic	Virtualization

Fast-Kubernetes

This repo covers Kubernetes objects' and components' details (Kubectl, Pod, Deployment, Service, ConfigMap, Volume, PV, PVC, Daemonset, Secret, Affinity, Taint-Toleration, Helm, etc.) fastly, and possible example usage scenarios (HowTo: Hands-on LAB) in a nutshell. Possible usage scenarios are aimed to update over time.

Prerequisite

• Have a knowledge of Container Technology (Docker). You can learn it from here => Fast-Docker

Keywords: Containerization, Kubernetes, Kubectl, Pod, Deployment, Service, ConfigMap, ReplicaSet, Volume, Cheatsheet.

Note: K8s objects and objects feature can be updated/changed in time. While creating this repo, the version of K8s is v1.22.3.

Quick Look (HowTo): Scenarios - Hands-on LAB

• LAB: K8s Creating Pod - Imperative Way
• LAB: K8s Creating Pod - Declarative Way (With File) - Environment Variable
• LAB: K8s Multicontainer - Sidecar - Emptydir Volume - Port-Forwarding
• LAB: K8s Deployment - Scale Up/Down - Bash Connection - Port Forwarding
• LAB: K8s Rollout - Rollback
• LAB: K8s Service Implementations (ClusterIp,…

How they SRE

A curated collection of publicly available resources on how technology and tech-savvy organizations around the world practice Site Reliability Engineering (SRE)

Introduction

How They SRE is a curated knowledge repository of best practices, tools, techniques, and culture of SRE adopted by the leading technology or tech-savvy organizations.

Many organizations regularly come forward and share their best practices, tools, techniques and offer an insight into engineering culture on various public platforms like engineering blogs, conferences & meetups. The content is curated from these avenues and shared in this repository.

Note to readers: This list refers to some of the articles, posts, videos, tools, and techniques published before 2015. Please use such material with caution as there may be recent advances in technology and practices which offer better alternatives and perspectives.

Topics

• Site Reliability Engineering
• Hiring and Building SRE teams
• SRE Culture
• DevOps
• Monitoring & Observability
• Alerting
• Incident Response…

Awesome Site Reliability Engineering

A curated list of awesome Site Reliability and Production Engineering resources.

What is Site Reliability Engineering?

"Fundamentally, it's what happens when you ask a software engineer to design an operations function." - Ben Treynor Sloss, VP Google Engineering, founder of Google SRE

Contributing

Please take a look at the contribution guidelines first Contributions are always welcome!

Contents

• Culture
• Education
• Books
• Hiring
• Reliability
• Monitoring & Observability & Alerting
• On-Call
• Post-Mortem
• Capacity Planning
• Service Level Agreement
• Performance
• Programming
• Misc Articles
• Real-time Messaging
• Blogs
• Newsletters
• Conferences & Meetups
• Twitter
• SRE Tools
• SRE Podcasts

Culture

• What is Site Reliability Engineering?
• Keys To SRE by Ben Treynor
• Google SRE Resources
• Notes from Production Engineering by Pedro Canahuati
• PostOps: Recovery from Operations
• Love DevOps? Wait 'till you meet SRE [video]
• How Google Does Planet-Scale Engineering for Planet-Scale Infra
• Site Reliability Engineering at Facebook
• A History of Site Reliability Engineering at Uber
• Case…

⭐

"A great Admin doesn't need to know everything, but they should be able to come up with amazing solutions to impossible projects." - cwheeler33 (ServerFault)

⭐

"My skills are making things work, not knowing a billion facts. [...] If I need to fix a system I’ll identify the problem, check the logs and look up the errors. If I need to implement a solution I’ll research the right solution, implement and document it, the later on only really have a general idea of how it works unless I interact with it frequently... it’s why it’s documented." - Sparcrypt (Reddit)

ℹ️  This project contains 284 test questions and answers that can be used as a test your knowledge or during an interview/exam for position such as Linux (*nix) System Administrator.

✔️  The answers are only examples and do not exhaust…

Awesome DevSecOps

Inspired by the awesome-* trend on GitHub. This is a collection of documents, presentations, videos, training materials, tools, services and general leadership that support the DevSecOps mission. These are the essential building blocks and tidbits that can help you to arrange for a DevSecOps experiment or to help you build out your own DevSecOps program.

This list will not be fully comprehensive and will change as DevSecOps matures. We intend for it to be an awesome list that grows and changes as the community learns and improves how DevSecOps is implemented and adopted. To be included in this list, the information, tools, vendors or initiative must provide for Free or Open Source capabilities that help with the DevSecOps mission. Links that lead to a commercial aspect are noted with a (P).

Table of Contents generated with DocToc

• Information
  • Guidelines
  • Presentations
  • Initiatives
  • Keeping Informed
  • Wardley Maps for Security
• Training
  • …

Hari Sekhon - DevOps Bash Tools

git.io/bash-tools

800+ DevOps Shell Scripts and Advanced Bash environment.

Fast, Advanced Systems Engineering, Automation, APIs, shorter CLIs, etc.

Heavily used in many GitHub repos, dozens of DockerHub builds (Dockerfiles) and 600+ CI builds.

Summary

• Scripts for many popular DevOps technologies, see Inventory below for more details
• Advanced configs for common tools like Git, vim, screen, tmux, PostgreSQL psql etc...
• CI configs for most major Continuous Integration products (see CI builds page)
• CI scripts for a drop-in framework of standard checks to run in all CI builds, CI detection, accounting for installation differences across CI environments, root vs user, virtualenvs etc.
• API scripts auto-handling authentication, tokens and other details to quickly query popular APIs with a few keystrokes just supplying the /path/endpoint
• Advanced Bash environment - .bashrc + .bash.d/*.sh - aliases, functions, colouring, dynamic Git &amp…

A curated collection of publicly available resources on how companies around the world practice DevOps

Introduction

How They DevOps is a curated knowledge repository on DevOps related topics - CI/CD

There are many ways to practice DevOps. Fortunately, many companies are willing to share how they do it. I believe there is much to learn from this documented use cases and published resources. The content you'll find in this repository is a list of such resources.

The reosurces are indexed by companies, technologies, years and DevOps related topics

Happy Learning!

Please note, that all the resources mentioned here are publicly available resources.

By Company