Remote administration

1. Introduction of DevOps

• What is DevOps? Acronym Dev+Ops?
• History of DevOps
• Overview of DevOps tools
• End-to-End DevOps workflow
• Who can learn DevOps?
• Importance & goals of DevOps Practices in real-time
• SDLC models, Agile and DevOps
• Opportunities, Trends and Future of DevOps
• Overview of Version Control, Build and Deployment Process, Continuous Integration and Deployment, Configuration management, Containerization, Virtualization & Cloud platform. etc..
• Roles of Cloud platforms in DevOps
• Roles and Responsibilities of DevOps Resource

2. Git & Github Version Control System

Version Control System Overview

• Introduction to version control systems (VCS)
• Different version control systems in the market
• Evolution of VCS
• Roles and goals of VCS in Source code management & DevOps
• Principles & features of Version Control Systems
• What is Git & Github? Differences!
• Roles and Responsibilities of DevOps Engineer in Git & Github

Git

• Git Basics & Architecture
• Git’s unique features in Source code management
• End-to-End Git Work-flow. A bird’s eye view
• Git Vs SVN Vs Other commercial VCS
• Git Command Line & GUI
• On-premise Vs Hosted Git Solutions
• Overview of GitHub, GitLab, Bitbucket. etc..
• Test your knowledge! Git Jargons. How much you can talk?
• Git Installation, Uninstallation, Upgradation on Linux
• Setting up Mandatory configurations & best practices
• ‘$git config’ command to setup User, Email, Editor and Credentials
• What is Source, Stage and Local repository.
• Git Revision Structure – SHA, User, Email, Commit Message and other metadata
• Git internals. How Git generates SHA value? What is this checksum code & data integrity all about?
• Significance of Staging Index. Skipping the staging. Best practices.

Git command line with most frequently used options in real-time

# Check the history of a file

• $ git log –author/–grep/–since/–until/–oneline/–grep  etc.

# How do you get diff of your changes?

• $ git diff          $ git diff –staged                   $ git diff sha..sha

# Removing a file in Git

• $ git rm
• – Is deletion permanent? Best practices.
• – Resurrect a deleted file

# Renaming a file in Git

• $ git mv command
• – Verify history after file rename

# Show more details about a change

• $ git show

# Undoing the changes

• – Revert a change from Source Area
• – Revert a change from staging area
• – Revert a committed change

$ Git pull & fetch commands

• – Difference between pull and fetch
• – Difference between clone and pull
• – Pull and Fetch best practices
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Branching and Merging

• What is a branch? When and Why do we create a new branch
• Importance of master branch & stable code
• Branching Strategies/Models – Pros and Cons
• Switching branches for parallel development
• Merging from one branch to another. Best practices

3. Jenkins

Jenkins & CI/CD Process

• What is Continuous Integration (CI), Continuous Delivery (CD), Continuous Deployment (CD)
• Difference between CI and CD
• End-to-End CI & CD Pipeline concepts
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Jenkins installation and setup

• Jenkins Installation and Configuration in Production
• Tomcat and JDK installation. Setting up environment variables.
• Exploring Jenkins Dashboard UI
• Git, Maven and & Build tools Installations & integration
• Different types of Jenkins Jobs. Freestyle, Pipeline, multi-configuration projects
• Creating Jenkins Pipeline jobs and understanding all project options
• Configuring automated Builds for WAR package creation
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Jenkins Administration

• Jenkins global configurations and administration settings
• Build tools configuration in Manage Jenkins
• Jenkins job build steps, triggers and post build actions
• Setting up System notifications for users
• Email configuration for sending CI/CD notifications
• Jenkins backup mechanisms and restoration policies
• Jenkins migration and upgradation
• Setting up Security for Jenkins
• Matrix based and Project based security
• Jenkins authorizations to Dev.
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Jenkins pipeline

• Advantages of build pipelines
• Creating pipeline projects using GUI
• Manual/GUI pipeline Vs scripted pipeline
• Groovy scripts DSL and syntax
• Creating Parameterized build jobs

Jenkins Plugins & CLI

• Introduction to Plugins. What is a plugin?
• Plugins Installation, Un-installation and upgrade
• Different ways of plugin installation and management
• Finding suitable plugins and interpreting plugins documentation for real-time scenarios
• Use cases and applying Jenkins CLI for real-time scenarios
• Explore Jenkins CLI options

Distributed Builds & Master/Slave concept

• When do we implement distributed builds?
• Setting master and slave nodes. Best practices
• Running builds in parallel on distributed environment
• Setting up and using SSH agents, cloud agents
• Load balancing and fine tuning builds and deployments using master and slave
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4. Docker

Introduction to Containerization  & Docker

• Basics of Virtu
• Difference between Virtual machine (VM), Physical machine and Docker container
• What is containerization?
• What is Docker
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Docker Installation in Production

• Docker supported platforms
• Docker prerequisites in production and commands to verify the same
• Docker Installation & Uninstallation in production
• Configuring Docker to be executed without sudo

Getting Started with Docker containers

• Creating first container
• Cgroup & Namespace Kernel features for containers
• Root file system, networking and processes isolation.
• Docker image concepts. Shipping the application code with dependencies
• Difference between Docker Image and Container
• Creating any flavor of Linux containers on any linux host
• Creating Linux containers on Windows. Concepts involved

Container management commands

• Shutdown Docker container
• Listing all containers in host
• Listing only running containers
• Listing last few number of containers
• Inspecting docker container information
• Listing last created container
• Creating a container with our own name
• Renaming a container
• Deleting one, all, stopped and running containers
• Starting, stopping and restarting containers from host
• Attaching to a running container
• Keyboard shortcuts
• Inspecting container processes from host
• Stopping the container gracefully and forcibly
• Find more about a container. Understanding container inspect JSON format
• Creating and Pushing a running container in daemon mode
• Creating demonized containers
• Pushing container in sleep mode
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Allocating Memory, CPU & Disk space to containers

• Verifying resource utilization and usage statistics – stats command
• Allocating Memory
• Allocating CPU
• Allocating Disk space
• Updating computing constraints on a running container
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Docker Volumes

• Docker Volume creation
• Inspecting Volumes
• Mounting Docker volume to containers
• Read-only volume
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Docker Images

• Understand more about Docker images – real-time use cases in DevOps
• Advantages of Docker images in application deployments
• Docker Image creation techniques
• Dockerfile instructions and usage
• Solving ‘Works in my machine problem’ with Docker Images
• Restoring environments with Docker images
• Auto scaling environments using Images
• Setting up dev environments with images. Docker Advantage!
• Creating and setting up account in Docker-hub

Project:1 – creating custom Docker image for Nginx web application

Project:2 – Creating custom Docker image for our own web application

Jenkins CI/CD Pipeline integration with Docker

• Creating disposable environments using Docker images
• Integrating Docker with Jenkins CI/CD Pipeline
• Writing deployment scripts for provisioning environments with images
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5. Ansible

Overview of Configuration Management with Ansible

• What is a configuration Management tool. What is Ansible?
• How Ansible Works
• What is Infrastructure as a code
• About some important Ansible Terminology
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Ansible Deployment

Ansible Architecture

Pre-Requisites for controller Node

• Test Environment Setup
• Installation and configuration
• Ansible Configuration file

Pre-Requisites for Managed Node

• Ansible Inventory
• Ansible Communication
• Communication checks with password Authentication
• Communication with key-Based Authentication
• Ansible Architecture
• Overriding the Default HOSTS File
• The Default System Ansible.Cfg File
• Overriding the Default Roles Path
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Ad-hoc Execution with Ansible

Why use ad-hoc commands? Syntax of ad-hoc commands

• Use cases for ad-hoc tasks
• Copying and Executing Modules:
• Running first Ansible commands
• Rebooting servers
• Managing files,Managing packages
• Managing users and groups
• Managing services
• Gathering facts
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Working with Playbooks

what is configuration, deployment, and orchestration

• YAML Structure, Playbook structure
• Ansible playbooks – quick start
• Playbook syntax checks
• Variables in Ansible
• Ansible Sections – target, tasks, handlers

Patterns: targeting hosts and groups

• Defining Variables in Ansible Code, Use Cases
• Debug the console logs
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Conditional loops and Handlers

• What is Conditionals in Ansible
• What are Loops in Ansible
• Handlers in Ansible
• Ansible Vaults- Introduction and Importance of vaults in Ansible
• Vault – commands and usage in playbooks
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Ansible Roles and Ansible Tower

• Introduction on Ansible Roles
• Role directory structure
• storing and finding roles
• Using roles
• Running a role multiple times in one playbook
• Include and Dependency Management
• Passing different parameters
• Introduction on ansible tower
• Tower installation and Tower Dashboard
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6. K8s

• Welcome & Introduction
• From Monolith to Microservices
• Container Orchestration (swarm / Kubernetes)
• Installation and Architecture of Kubernetes
• Kubeadm, kubelet kubectl
• Kubernetes Building Blocks
• Services
• Deploying a Stand-Alone Application
• Kubernetes Volume Management
• ConfigMaps and Secrets
• Ingress
• Advanced Topics
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7. Teraform

• Understand infrastructure as code (IaC) concepts
• Understand Terraform’s purpose (vs other IaC)
• Understand Terraform basics
• Use the Terraform CLI
• Interact with Terraform modules
• Navigate Terraform workflow
• Implement and maintain state
• Read, generate, and modify configuration
• Understand Terraform Cloud and Enterprise capabilities