Question 1

Introduction to DevOps

DevOps Bootcamp Overview
What is DevOps?
Roles and Responsibilities of a DevOps Engineer
How DevOps fits in the whole Software Development lifecycle

Answer

AWS & Kubernetes

Answer

After having learnt the programming basics and now being able to write programs, you will learn how to use this Python knowledge for DevOps use cases. Cloud Automation - AWS & Python

Answer

As a continuation of the projects in all the previous modules, we will use Ansible to further automate and optimize DevOps processes. Ansible, next to Terraform is one of the most popular infrastructure as code and configuration management tools currently used in IT projects. Core Concepts and Syntax of Ansible

Question 2

Version Control with Git

Introduction to Version Control and Git

Full Git Tutorial:

Basic Concepts of Git
Setup git repository (remote and local)
Working with Git (git status, git commit, git add, git push)
Initialize Git project locally
Concept of Branches
Merge Requests
Deleting Branches
Avoiding Merge Commits (rebase)
Resolving Merge Conflicts
Don't track certain files (.gitignore)
Save work-in-progress changes (git stash)
Going back in history (git checkout)
Undoing commits (git revert, git reset)
Merging Branches

Git for DevOps

Question 3

Build & Package Manager Tools

What are Build Tools and Package Managers?
How to build an artifact?
How to run the application artifact?
How to publish the application artifact to artifact repository?
Build Tools for Java (gradle and maven examples)
Dependency Management in Software Development
Package Manager in JavaScript applications - Build and run applications in JS
Build Tools & Docker

Why Build Tools are relevant for DevOps Engineers?

Question 4

Cloud & Infrastructure as a Service Basics

Cloud & Infrastructure as a Service Concepts

Working with a cloud server:

Setup Server on DigitalOcean (Droplet)
Install Java on Cloud Server
Deploy and run an application on Cloud Server
Create a Linux User to login to Server (instead of using Root User)

Question 5

Artifact Repository Manager with Nexus

What is an Artifact Repository Manager?
Install and run Nexus on Cloud Server
Different Repository Types (proxy, hosted, etc.) explained
Different Repository Formats (maven, docker, npm, etc.) explained
Upload Jar File to Nexus (maven and gradle projects)
Nexus API and Repository URLs
Blob stores
Browsing Components - Components vs Assets
Cleanup Policies
Scheduled Tasks

Question 6

Containers with Docker

What is a Container?
Docker Components and architecture explained
Docker vs. Virtual Machine
Main Docker Commands
Debugging a Docker Container
Demo Project Overview - Docker in Practice (Nodejs App with MongoDB and MongoExpress UI)
Developing with Containers
Docker Compose - Running multiple services
Dockerfile - Building our own Docker Image
Private Docker Repository - Pushing our built Docker Image into a private Registry on AWS
Deploy containerized app
Docker Volumes - Persist data in Docker
Volumes Demo - Configure persistence for our demo project

Docker & Nexus

Create Docker Images Repository on Nexus
Push/Pull Docker Image from/to Nexus Repository Manager
Install Nexus with Docker
Configure insecure repositories in Docker Engine

Question 7

Build Automation - CI/CD with Jenkins

What is Build Automation? What is Jenkins?
Install Jenkins on cloud server (Docker vs Server install)
Jenkins plugins
Installing build tools in Jenkins
Jenkins Basics Demo
- Create Freestyle Job
- Configure Git Repository
- Run Tests and Build Java Application
Docker in Jenkins
- Make Docker commands available in Jenkins
- Build Docker Image
- Push to DockerHub Repo
- Push to Nexus Repo
Jenkins Pipeline (Use Cases)
Create a simple Pipeline Job
Full Jenkinsfile Syntax Demo
Create a full Pipeline Job
- Build Java App
- Build Docker Image
- Push to private DockerHub
Create a Multi-Branch Pipeline Job
Credentials in Jenkins
Jenkins Shared Library
WebHooks - Trigger Jenkins Jobs automatically
Versioning Application in Continuous Deployment
- Concepts of Versioning in Software Development
- Increment Application version from Jenkins Pipeline
- Set new Docker Image version from Jenkins Pipeline
- Commit Version Bump from Jenkins Pipeline

Question 8

AWS Services

Introduction to Amazon Web Services
Identity & Access Management (IAM) - User, Groups and Permissions
Regions and Availability Zones
Virtual Private Cloud (VPC) - Your Private Network
- Subnets
- Security Groups
- Internet Gateway
- Route Table
- CIDR Blocks
Introduction to Elastic Compute Cloud (EC2)
- Create an EC2 Instance
- Run Webapplication on EC2 using Docker
AWS Command Line Tool
- Install and configure AWS CLI
- Create EC2
- Create Security Group
- Create key-pair
- Create IAM user with permissions

AWS & Jenkins - Continuous Deployment with Jenkins to AWS EC2

Automate deploying from Jenkins Pipeline to EC2 Intance
- using docker run
- using docker-compose
Real-life example of dynamically setting new image version in docker-compose
SSH agent plugin and SSH credential type in Jenkins

Question 9

Container Orchestration with Kubernetes

Introduction to Kubernetes
Understand the main Kubernetes Components
- Node, Pod, Service, Ingress, ConfigMap, Secret, Volume, Deployment, StatefulSet
Kubernetes Architecture
Minikube and kubectl - Local Setup
Main Kubectl Commands - K8s CLI
- Create and debug Pod in a Minicluster
Kubernetes YAML Configuration File
- Create and Configure Deployment and Service Component
Demo Project: MongoDB and MongoExpress
Organizing your components with K8s Namespaces
Kubernetes Service Types
Making your App accessible from outside with Kubernetes Ingress
Persisting Data in Kubernetes with Volumes
- Persistent Volume
- Persistent Volume Claim
- Storage Class
ConfigMap and Secret Kubernetes Volume Types
Deploying Stateful Apps with StatefulSet
Deploying Kubernetes cluster on a Managed Kubernetes Service (K8s on Cloud)
Helm - Package Manager of Kubernetes
Helm Demo: Install a Stateful Application on Kubernetes using Helm
Demo: Deploy App from Private Docker Registry
Extending the Kubernetes API with Operator
Prometheus Operator Demo with Helm: Setup Prometheus Monitoring in K8s
Secure your cluster - Authorization with Role Based Access Control (RBAC)

Microservices in Kubernetes

Introduction to Microservices
Demo project: Deploy Microservices Application
Production & Security Best Practices
Demo project: Create common Helm Chart for Microservices
Demo project: Deploy Microservices with helmfile

Question 10

Kubernetes on AWS - EKS

AWS Container Services: Overview (ECR, ECS, EKS, Fargate)
Create an EKS cluster with AWS Management Console (UI)
- Create cluster VPC
- Create cluster Roles
- Use Cloudformation Stack
- EC2 Worker Nodes
- Fargate Profile
- Configure Austoscaler
- Configure kube context to connect to the cluster
Create an EKS cluster with eksctl (the easy way)

AWS & Kubernetes & Jenkins & Docker - CI/CD

Configure kubectl inside Jenkins
Configure kube context in Jenkins
Install aws-iam-authenticator in Jenkins
Complete Jenkins Pipeline - Deploy to EKS - using kubectl
Complete Jenkins Pipeline - Build and push docker image to ECR and deploy to EKS
Complete Jenkins Pipeline - Deploy to LKE using Kubernetes CLI plugin and kubeconfig file

Question 11

Infrastructure as Code with Terraform

What is Terraform? How it works
Architecture
Providers
Resources & Data Sources
Variables & Output Values
Environment variables in Terraform
Terraform commands
Terraform State
Provisioners
Modules
Remote State

Terraform & AWS

Create Security Group
Create VPC
Create Subnet
Create Route Table
Create Internet Gateway
Create key-pair
Provision EC2 server
Modularize the demo project

Terraform & AWS & Kubernetes

Use existing modules from Terraform Registry
Create VPC
Provision EKS cluster

Terraform & AWS & Jenkins - complete CI/CD

Configure Terraform in Jenkins
Automate provisioning EC2 instance from Jenkins pipeline and deploy the application with docker-compose

Question 12

Programming with Python

Introduction to Python: What is Python and why to learn Python as a DevOps engineer?
Installation and Setup Local Development Environment
Write our first Python program
Python IDE vs simple File Editor
Strings and Number Data Types
Variables
Encapsulate Logic with Functions
Accepting User Input
Conditionals (if / else) and Boolean Data Type
Error Handling with Try / Except
While Loops
Lists and For Loops
Comments in Python
Sets
Built-In Functions
Dictionary Data Type
Modularize your project with Modules
Project: Countdown App
Packages, PyPI and pip
Project: Automation with Python (Working with Spreadsheets)
Object Oriented Programming: Classes and Objects
Project: API Request to GitLab

Question 13

Automation with Python

Introduction to Boto (AWS Library for Python)
Install Boto3 and connect to AWS
Getting familiar with Boto Library
- Automate creating VPC and Subnets
Terraform vs Python - understand the differences and when to use which tool

Automation Tasks around EC2 Instance:

Health Check: Automatically check the status of EC2 Instances
Scheduler: Write a scheduled task that executes the status check in a specified interval automatically
Configure Server: Automate adding tags to EC2 Instances with the environment label

Automate getting cluster information from all EKS clusters in your AWS account

Automation Tasks around Data Backup & Restore

Backup EC2 Instances: Automate creating snapshots of EC2 Volumes
Cleanup Task: Write a cleanup script to automate cleanup of old EC2 snapshots
Restore EC2 Volume: Write a program to restore an EC2 volume with the backup snapshot and attach it to the EC2 Instance

Automation Tasks around Website Monitoring (without AWS)

Monitoring: Write a scheduled automation program that monitors the website's health
E-Mail Notification: Configure python program to automatically send an email every time the website or server is down
Recover: Restart the application and reboot the underlying remote server

Question 14

Configuration Management with Ansible

Introduction to Ansible
Install & Configure Ansible
Setup Managed Server to configure with Ansible
Ansible Inventory
Ansible ad-hoc Commands
Configure AWS EC2 server with Ansible
Managing Host Key Checking and SSH keys
Ansible Tasks, Play & Playbook
Ansible Modules
Ansible Collections & Ansible Galaxy
Ansible Variables - to make your Playbook customizable
Troubleshooting in Ansible
Conditionals
Privilege Escalation
Ansible Configuration - Default Inventory File

Learn most common Ansible modules with hands-on demos:

Project: Deploy Nodejs Application
Project: Deploy Nexus
Configure servers with different Linux distributions on AWS and Digital Ocean platforms

In these projects we will install tools on a server, configure applications, work with a file system, move static files between machines etc. Essentially you will learn how to map and translate shell scripts and commands into Ansible Playbooks to automate various common tasks in general. More Advanced Topics & Integrations with other Technologies

Dynamic Inventory for EC2 Servers
Ansible Roles - to make your Ansible content more reusable and modular for better maintenance
Project: Ansible & Terraform
Project: Run Docker applications
Project: Deploying Applications in Kubernetes
Project: Run Ansible from Jenkins Pipeline

So, you don't learn Ansible just as a standalone tool in this bootcamp, but rather integrated in different technologies, like Docker, K8s, Terraform, Jenkins, AWS and so on, in various real world use cases, as it builds on the previous modules in the bootcamp!

Question 15

Operating Systems & Linux Basics

Introduction to Operating Systems

What is an OS and how does it work?
Tasks of an OS
How an OS is constructed
How different OSs, like Unix, Linux, Windows and MacOS differ from each other

Virtualization

Introduction to Virtual Machine
Setup a Linux Virtual Machine

Package Manager - Installing Software

What is a Package Manager and what are Software Repositories?
Learn all the options of installing software on Linux and how it all actually works in the background:
- APT
- APT vs APT-GET
- SNAP
- Ubuntu Software Center
- YUM

Working with Vim Editor

What is Vim?
Learn most important Vim Commands to work with Vim efficiently

Users & Permissions

Linux Accounts
Users, Groups & Permissions
User Management in Practice
File Ownership & Permissions
Modifying Permissions

Linux File System Basic Linux Commands

Introduction to Command Line Interface
Learn all the essential Linux Commands like
- Directory Operations
- Navigating the Files System
- Work with the File System (Create folders, list files, rename, remove files etc.)
- Execute Commands as Superuser
- Pipes, Redirects, Less, Grep

Shell Scripting

Shell vs sh vs Bash
Write & execute a simple script
Learn how to write Bash Scripts
- Variables
- Conditional Statements
- Basic Operators
- Passing Arguments to a Script to make it customizable and reusable
- Read user input
- Repeating code with shell loops
- Functions

Environment Variables

What are environment variables and how to access them
Create, Delete and Persist Env Variables
Understand what the PATH env variables is

Networking

How computer networks work?
What is LAN, Switch, Router, Subnet, Firewall, Gateway
What is an IP address and port?
What is a DNS and how does DNS resolution work?
Useful Networking Commands

SSH - Secure Shell

What is SSH and how it works
SSH in Action:
- Create Remote Server on Cloud
- Generate SSH Key Pair
- Execute a bash script on a remote machine

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