DevOps_Intro.txt

DevOps Cloud Expert Training Programme!

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Start Date : 13th July 2024
Time : 10AM - 2PM IST
Weekends
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Day 1: 13th July 2024
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	Introduction to DevOps Cloud Expert Training Programme!
	Modules 
	Topics 
	
	Open Source DevOps Tools
	
	Cloud Computing 
	
		AWS 
		AZURE 
		GCP
		
	Lab Access :::
	
	
	
	Module 1 : DevOps Specialist :::
	
	Scripting :::
	
		shell/Python/Groovy/Yaml
		
		
	DevOps ::::
	
		What is DevOps ????
		
		
	SDLC - Software Development Lifecycle 
	
	Software :::
	
		Types of Software Application ::
		
			Web Applications			--> 
			
			Mobile Applications
			
			Desktops Applications
			
			System Applications
			
			Embedded Applications
			
			
	SDLC - Software Development Lifecycle :

	
		Requirement Analysis 
		
		Documented/Design
		
		Code/Develop 
		
		Testing 
		
		Implementation to Production 
		
		Maintain/Monitor the Applications/Infra-Structure
		
	
	Waterfall-Model ::
		
		- Is based on the Tightly Coupled Applications
			i.e., All the the functions/modules are created, tested and implemented as a whole application.
		- It strictly follows the Linear/Top-Down Approach
	
	
		Desktops Applications :: 
		
			Billing-System for Super-Markets 
			
				--> Stock Maintainence 		--> module/function
				--> Purchase 
				--> Billing 
				--> Reports
				--> Payment --> CASH Payment method 
								CARD Payment Mode 
			
				
		Core Project :
				
			Requirement Analysis 	---> 10 Months  
			
			Documented/Design
			
			Code/Develop 			--> 5th Month
			
			Testing 
			
			Implementation to Production 
			
			Maintain/Monitor the Applications/Infra-Structure			
		

		Enhancement Project :	CARD Payment Mode 

			Requirement Analysis 	---> 10 Months  
			
			Documented/Design
			
			Code/Develop 			--> 5th Month
			
			Testing 
			
			Implementation to Production 
			
			Maintain/Monitor the Applications/Infra-Structure
			
			
		
		
	AGILE Methodologies ::::


		Here, the Application is developes as an individual Module 

		Desktops Applications :: 
		
			Billing-System for Super-Markets 
			
				--> Stock Maintainence 		--> module/function
				--> Purchase 
				--> Billing 
				--> Reports
				--> Payment --> CASH Payment method 
								CARD Payment Mode 	

		Requirement Analysis 
		
		Documented/Design
		
		Code/Develop 
		
		Testing 
		
		Implementation to Production 
		
		Maintain/Monitor the Applications/Infra-Structure
		
		
		Module/Function/Iteration :
		
		Iteration1 : Stock Maintainence

			Requirement Analysis 			
			Documented/Design			
			Code/Develop 			
			Testing 			
			Implemented for further Testing

		Iteration2 : Purchase

			Requirement Analysis 			
			Documented/Design			
			Code/Develop 			
			Testing 			
			Implemented for further Testing
			
		Iteration3 : Billing

			Requirement Analysis 			
			Documented/Design			
			Code/Develop 			
			Testing 			
			Implemented for further Testing 


		Iteration-nth : CARD Payment		developer 1

			Requirement Analysis 			
			Documented/Design			
			Code/Develop 			
			Testing 			
			Implemented for further Testing
			
			
			
				-> Using Agile Methodologies;
				
					We can achieve :
					
						Continuous Development
						
						Continuous Integration 
						
						Continuous Testing 
						
						Continuous Delivery 
						
							- It is used to release the product to production environment with proper approval. 
							- For any production release, manual approval is required in AGILE Methodologies.
							
						
					We cannot achieve :
					
						Continuous Deployment 

						
	DevOps :::::
	
		DevOps is a software development strategy, which is used promote collaboration between the teams like Development Team and Operations Team to achieve Continuous Development, Continuous Integration, Continuous Testing, Continuous Delivery, Continuous Deployment and Continuous Monitoring in more automation fashion.
		
	How to Implement DevOps ?
	
		Banking Customer :
		
		- Detailed DevOps Assessment 
		
			--> Assessment Report ::::
			
			
		Teams involved in the overall SDLC Process ::

		DevOps Team :
		
			- Infra-Structure Management Team 
			- Application Development Team   	- Core 
			- Testing Team 
			- Release Management Team 
			- Production Support / Monitoring Team
			- Security Team
			
			
		Environments :::
		
			Non-Prod Environments							=====>				Production Environments
			
				Dev Environment
				Build Environment
				Test Environments
					QA  - Quality Assurance Testing 
					UAT - User Acceptance Testing			----->					Production Server(s)
					
		
		DevOps Stages :::
		
			Continuous Development :::
			
				-> It is capability of the development team to continuously develop the code and improve the Developers' productivity.
				
				Role of the Developers :

					Create the source code 
					Build the source code ---> Compile the source code and create artifacts - Binaries (*.war/*.jar/*.exec/*.dll)
					Unit Testing 
					Promote the Change to Test Environments
					Notify the Testing Teams 
					
				Using DevOps Approach :::
				
					1. Create the source code
					2. Save the source code in the source code repository (github/Azure Repo)
					
					Using DevOps Automation :: 
					
						Build the source code ---> Compile the source code and create artifacts - Binaries (*.war/*.jar/*.exec/*.dll)
						Unit Testing 
						Promote the Change to Test Environments
						Notify the Testing Teams 	

				Tools ::
				
					IDEs - Integrate Development Environment - Eclipse based IDEs, Visual Studio Code, Visual Studio, Pycharm, Intellij
					GITHUB
			
			Continuous Integration :::
			
				-> It is capability of the development team to continuously integrate the change for further testing without impacting others' changes.
			
				Tools ::
				
					IDEs - Integrate Development Environment - Eclipse based IDEs, Visual Studio Code, Visual Studio, Pycharm, Intellij
					GITHUB	
					Jenkins, Ansible 
					Docker, Kubernetes
				
			Continuous Testing :::
			
				-> It is the capability of the Testing Team to continuously test the services covering all the test scenairos.
				
				Tools :
				
					Jenkins 
					TestNG/Selenium 
					
					
			
			Continuous Delivery/Deployment :::
			
				--> Both are related to Production Release.
				--> Both are used to release the changes to production environment
				
				Continuous Delivery ::
				
					- This expect the Manual Approval for production Release
					- This might lead to production downtime

					Eg.: 
					
						Core Banking / Insurance Applications 
						
						Create a Deployment/Release Window - 4Hrs - 6Hrs. 
							Production Implementation
							Manual Approval 
							--> v1.0 ==> v2.0
								fix the issue else revert 
				
				Continuous Deployment ::
				
					- This will never expect any manual approvals for production release.
					- This will never create any downtime during production Deployments.
					- The Continuous Deployment can be achieved only through the Micro-Service Based Application Architecture.
					
					Eg.: 
					
						facebook/google/amazon/netflix 					
				
					www.amazon.com 
					
					user_signup	- Micro-Service1 - developer1 - code_changes -- test, promote the changes for further testing(QA/UAT) -- Production Released
					user_signin - Micro-Service2
					search 
					Address_Update 
					Add_to_cart
					MakePayment
					Confirm_Order 
					Trace_order 
					
					Tools :
					
						Jenkins/Azure Pipelines/ 
						Ansible 
						Docker
						Kubernetes


			
			Continuous Monitoring ::: -	Production Support/Monitoring Team 
			
				Infra-Structure ::
					
					Production Server(s) 
					
						CPU Utilization			80% 
						
						Memory Utilization		80% 
					
						Network Traffic 		10000 users 	--> 50000 users 
						
					Monitoring Tools :
					
						Prometheus/Grafana/Nagios/Splunk/Dynatrace 
						AWS Cloud Watch 
						Azure Monitor 
						
				
				Application Monitoring ::
				
					Performance of the Applications 
					
						Database 
						Program Calls 
						
						AppDynamics/DataDog
			
			
			
		Infra-Structure Management::

			IAC Tools --> Infra-Structure As Code 
			
				- Server Provision/Creation Tools	-- Terraform/Cloudformation/ARM 
				
				- Configuration Management Tools	-- Ansible/Chef/Puppet
			
			
		
		Implementation ::
		
			On-premises Servers 
			
			On any Cloud platform - AWS/AZURE/GCP/
			
			
		DevOps Tools :
		
			Open-Source DevOps Tools 
			
				git/github/jenkins/docker/ansible/terraform/kubernetes/Prometheus/Grafana
				
			Managed Services : AWS/AZURE
			
				AWS : AWS Code-Commit/Code-Pipeline
				Azure : Azure DevOps Services 
			
	DevOps :::::
	
		DevOps is a software development strategy, which is used promote collaboration between the teams like Development Team and Operations Team to achieve Continuous Development, Continuous Integration, Continuous Testing, Continuous Delivery, Continuous Deployment and Continuous Monitoring in more automation fashion.		
		
		Types of Applications :::
		
			- Monolith Application Architecture
			
				- Is the Tightly Coupled Applications
				- All the the functions/modules are created, tested and implemented as a whole application
				- Leads to Downtime during production release 
			
			- Micro-Service Based Application Architecture
			
				- Is a Loosely Coupled Application
				- The Function/Modules are called as Micro-Service.
				- These micro-service can be independly developed, tested and implemented without any downtime

		
	Waterfall,AGILE,DevOps,DevSecOps,GitOps,SRE,AIOps,MLOps,...........	



	DevOps LifeCycle :::
	
		Developers 
		
			Coding 
			
			Commit the code to Repository(GITHUB)
			
			Build 
			
			Unit Testing 
			
			Promote the code to QA Environment
			
			QA Testing 
			
			Promote the Code to UAT Environment

			UAT Testing 
			
			Promote the Code to Prod Environment
			
			Prod Testing 
			
			Application will be LIVE 

			Production Monitoring 
			
			
	DevOps is all about Continuous Improvement 
	
		--> Key DevOps Factors ::
		
				- People 
				- Process 
				- Tool 
				
				
	
	Lab :::
	
		1. Cloud Platform :::
		
			AWS Cloud Platform - 12 Months - free tier Account 
				- Create Virtual Machines - Linux 
	
			
		2. GITHUB Account ::: ****

			Repository to manage Folders and Files 
			
		3. Create Dockerhub Account :::