0. 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

1. Git & GitHub Intro (SEC-A)

• What is Version Control System?
• Introduction to version control systems (VCS)
• Different version control systems in the market
• Evolution of VCS
• Roles and features of VCS in Source code management in DevOps
• 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.
• Git Vs SVN Vs Other commercial VCS
• Git Command Line & GUI
• Overview of GitHub, GitLab, Bitbucket. etc.
• 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  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/restore 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, staging area
• - Revert a committed change
• $ Git pull & fetch commands
• - Difference between pull and fetch
• - Difference between clone and pull
• $ fork in GitHub and clone

Git & GitHub Branch (SEC-B)

• 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

Git & GitHub Adv. (SEC-C)

• Git stash                  : temporarily shelves (or stashes) changes
• Git Squash             : to combine multiple commits into one.
• Git Patch                 : text files that contain code and Git commit metadata
• Got Cherry pic       : enables arbitrary Git commits 
• Git Collaboration : different people can work on the same project together.

GitHub Action. (SEC-D)

• GitHub Actions is a CI approach to automate your build,
• test,
• and deployment pipeline

1. Ansible (SEC-A)

Overview of Configuration Management with Ansible

• What is a configuration Management tool. What is Ansible?
• How Ansible Works (ssh protocol)
• What is Infrastructure as a code (IAC)
• Ansible as CD tool
• About some important Ansible Terminology
• Ansible Architecture

Ansible Environment Setup

• Installation and configuration
• Ssh pass less connection from master to node
• Ansible Inventory
• Ansible Configuration file
• Ansible ad-hoc commands

Ansible 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
• When clause in Playbook

Ansible Vault

• What is vault in ansible
• Why use vault
• Advantages/Disadvantages of vault
• Lab

Conditional loops and Handlers

• What are 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

Ansible (SEC-B)

Dynamic inventory

• What is dynamic inventory
• Scenario based dynamic inventory
• How it will work

Ansible Performance tuning

• How to speed up your playbooks
• OR
• How to reduce execution time of playbook
• Ansible config file
• Ansible fork

Ansible Roles/ galaxy

• 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

Ansible High Availability (HA)

• Introduction on ansible tower
• Tower installation and Tower Dashboard

Ansible Miss.

• Ansible ssh password less when target is 1000 node
• Execute a shell script from playbook
• Create an ec2 by ansible (iac)

1. Jenkins as CI tools (SEC-A)

• Install and configure Jenkins
• Exploring Jenkins Dashboard UI
• 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
• CI/CD pipeline (free style)
• CD/CD pipeline (scripted & declarative)
• Jenkins file & variable
• e-mail notification from Jenkins
• Integrate sq, af/s3 to Jenkins

Jenkins (SEC-B)

• Jenkins HA config (Master/Slave)
• Jenkins security (using https)
• Matrix based and Project based security
• Jenkins PT
• Multi branch pipeline
• Custom home directory of Jenkins
• Install and configure Jenkins on docker container
• How and what to take backup of Jenkins and restore
• monitor Jenkins ci/cd and resource

1. Docker (SEC-A)

• Introduction & Architecture
• VM vs Container, Adv of container
• Installation and create & manage container
• Docker file & images
• Create image/container of custom app (python, java, NodeJS)
• Docker container in-depth:
•    > Layer
•    > Network (Ip, ping to container, google)
•    > Verifying resource utilization and usage statistics - stats command
•    > Allocating of resource (CPU, ram, Disk)
•    > Create a container with custom Ip
•    > Updating computing constraints on a running container
• Docker Volume creation, Inspecting Volumes
• Mounting Docker volume to containers
• Read-only volume

Docker (SEC-B)

• Reduce size of image (by docker file/Docker Slim)
• Container process management
• Docker composes
• TS and logs
• CI/CD projects using Docker as end point
• Another ci/cd with Docker using Jenkins variables

1. SonarQube

• What is sq ?
• Installation & configuration.
• Architecture of sq.
• SonarQube components.
• Check the code quality.
• SQ with CI(Jenkins).

1. Artifact

• What is AF
• AWS S3 as AF
• Integrate to Jenkins

1. Terraform (SEC-A)

• Concept and Advantages of Infrastructure as Code
• Installation, architecture of Terraform and manage provider
• Initialize a Terraform working directory, Describe Terraform workflow, validate a Terraform configuration
• Generate and review an execution plan for Terraform Execute changes to infrastructure with Terraform Destroy
• Terraform managed infrastructure
• Launch AWS S3 and modify the same
• Launch EC2 in AWS with key and security group and connect
• Launch AWS VPC, subnet, gateway, routing
• Launch ec2 and RDS on custom VPC

Terraform (SEC-B)

• Terraform state file (local/remote)
• Terraform variable, loop, for each loop, count, conditions
•  Terraform import (existing infra to terraform tfstate)
• Terraform taint and untaint
• Terraform Data source

1. Kubernetes (SEC-A)

•  Architecture
•  Installation:

1. Minikube
2. Kubeadm

•          iii.  kops

1. EKS

•  Attach / detach node
•  Deployment(nginx), replica set, service
•  pod in depth, AH, AS                                                    
•  Taint master/worker
•  Deployment (python/java/NodeJS)
•  Volume (PV, PVC; using AWS EBS, EFS)
•  RBAC, create k8s user

SEC-B:

• Service in depth (cip, np, lb, ingress)
• Backup cluster, etcd
• upgrade cluster (1.27 to 1.28)
• TS and Auto heel scale
• cicd. end point Kubernetes pod
• Helm chart
•    What is helm & helm chart?
•    Architecture of Helm chart
•    Advantages of Helm chart
•    Basic commands of Helm
•    Install helm and test
•    Install app(nginx) using helm chart
•    How to create my own Helm chart
•    From application (python/java/node js/…) to helm chart
•    Create helm chart from manifest (yaml)..helmify
•    Create local helm repo

SEC-C:

• Taint n Toleration; schedule (node selector/pod affinity)
• Node selector and Node affinity
• Resource quota, limit range, max limit (namespace wise or pod wise)
• White/black list in ingress controller
• HPA, ConfigMap, secret
• Upgrade plan (maxSurge)

SEC-D:

• Kubernetes upgrade policy
• maxSurge and maxUnavailable
• Configure Kubernetes for Rolling Update
• Advance Scheduling:
• Node Selector, Node Affinity, Pod Affinity/Anti Affinity, Taint and Toleration
• Kustomise
• Daemon set in Kubernetes
• TLS etcd/Api, kubeconfig file
• What Are Secrets in Kubernetes?
• Kubernetes service account, command n arguments

1. Prometheus, Grafana, Loki, promtail

• Download Prometheus and node exporter
• Install Prometheus node exporter
• Install and configure Prometheus
• Configure Prometheus for Grafana
• Check Prometheus metrics in Grafana Explore view
• Start building dashboards

1. GitOps:

• gitAction
• Argo CD install and configure with k8s
• Deployment on k8s:  git action as CI tool and argocd as cd tools