DevOps Tutorial: A Comprehensive Guide for Beginners

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Have you ever thought of how in today’s fast-paced and competitive software development landscape, organizations are able to deliver high-quality products faster and more efficiently? Well, that is when DevOps comes into the picture. If you are new to DevOps and want to learn more about it, you have come to the right place. DevOps, as the name suggests, is the combination of two things- Development and Operations. My DevOps tutorial for beginners will help you understand how it can streamline software development processes. In this DevOps tutorial for beginners, I will cover all the key concepts, practices, and tools that are associated with DevOps.

Introduction to DevOps — Agile Software Development

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What Is DevOps?

DevOps is a set of practices that combines software development (Dev) and IT operations (Ops) to enhance collaboration, communication, and efficiency within an organization. Basically, it aims to bridge the gap between development teams (which are responsible for creating and updating software) and operation teams (which are responsible for maintaining and deploying software in production environments).

Key principles and practices of DevOps include:

Continuous Integration (CI).
Infrastructure as Code (IaC).
Monitoring and Logging.
Continuous Delivery.
Collaboration and Communication.
Continuous Delivery.
DevSecOps.
Agile and Lean Practices.

Learn more about why DevOps is important in this DevOps tutorial for beginners.

Why DevOps?

Earlier, there were two models being used- the Waterfall Model and the Agile method, before DevOps came into action.Let’s have a look to understand these Methods deeply.

1. Waterfall Method-

We know how the problems are faced in the traditional Waterfall model, which, as the name suggests, follows a sequential and linear approach. It has various phases and the output of one phase works as the input of the next phase. And if any mistake occurs in the flow of work, it cannot be diverted toward the previous state thus the whole process has to repeat itself. Interaction with the customer is zero.

The phases are-

Requirement
Design
ImplementationVerification
Maintenance

The drawbacks of this method are-

The previous stage cannot be changed.
Not recommended for large-sized projects.
High risk of customer dissatisfaction.
Lack of early feedback.
Limited collaboration and communication.

2. Agile Model-

To resolve the waterfall model issues, a new method was used known as the Agile method. Under this, the whole development plan gets split into multiple iterations. It includes the interaction with the customers, but still, the issues evolved in the Agile model too. The problem is when the development team alters the code for better productivity and sends it to the Operations team, there are chances of delay in the feedback from the operations team.

Each iteration includes the following stages-

Requirement
Design
Development
Release

The drawbacks of this method are-

Lack of Upfront Design.
Resource constraints.
Lack of predictability.
Continuous planning and re-prioritization.

Henceforth, to eliminate this delay, DevOps works as the solution. It allows the Development team and the Operations team to work together and interact directly. This thing further avoids delays, fixes bugs, and delivers quality data on time. DevOps allows continuous connection between both teams, from the deployment of the code to the testing of it. DevOps provides uninterrupted monitoring and immediate feedback, which in turn gives the best results. Look at the image below for a better understanding.

Scroll down to learn more about DevOps tools in this DevOps tutorial for beginners.

DevOps Tools:

In order to support various aspects of the DevOps lifecycle, various tools are used. Learn about some commonly used DevOps tools in this DevOps tutorial:

1. Version Control Tool-

Git: A distributed version control system for tracking changes in code repositories.

2. Continuous Integration (CI)/ Continuous Deployment (CD) Tools-

Jenkins: It is used for building, testing, and deploying software.
CircleCI: A cloud-based CI/CD platform for automating the software development process.
Travis CI: A hosted CI service that integrates with GitHub repositories.
GitLab CI/CD: It is an integrated CI/CD tool that is part of the GitLab platform.

3. Containerization Tools-

Docker: A platform that allows you to package applications and their dependencies into containers for easy deployment and scalability.
Kubernetes: It automates scaling, deployment, and management of containerized applications.

4. Configuration Management Tools-

Puppet:Used for automating the management of infrastructure and applications.
Ansible: Tool for configuration management, deployment, and orchestration.
Chef: For defining and managing infrastructure as code.

5. Infrastructure as Code (IaC) Tools-

Terraform: It allows you to manage and define infrastructure resources.
AWS CloudFormation: A service provided by AWS (Amazon Web Series) for providing and managing AWS resources using templates.

6. Monitoring and Logging Tools-

Prometheus: Used for collecting and analyzing metrics.
Grafana: A data visualization and monitoring tool that works with various data sources, including Prometheus.
ELK Stack (Elasticsearch, Logstash, Kibana): It is a combination of tools for log management and analysis.

These are the DevOps tools covered in this DevOps tutorial for beginners.

DevOps Architecture:

Have a look at the DevOps phases in this DevOps tutorial.

1. Plan–

The requirements like cost and time are discussed in this phase, which gives a brief idea to everyone about the project.

2. Code–

Here, the code is written as per the client’s requirements. And further, the code gets split into small codes called units to receive a clear code picture.

3. Build–

The unit building is done while going through this stage.

4. Test–

The units get tested in this stage for hassle-free results.

5. Integrate–

Jenkins tool is used in this for code integration. It creates to one connection between development and operation teams.

6. Deploy–

The code gets deployed while going through this phase. The tools used for deployment are AWS and Docker.

7. Operate–

Operations are executed on the code in this stage. Tools used are Kubernetes and Open Shift.

8. Monitor–

The Application monitoring gets processed in this phase. Tools used are Nagios and Elastic Stack.

Applications of DevOps:

Let’s learn about some of the applications of DevOps in this DevOps tutorial:

1. HP-

When testing the software this company faced problems. There used to be manual testing to detect the bugs and if any bugs were found, then it used to take around one week to fix the issues. Henceforth, to resolve this problem, they started using CI and CD pipelines.

2. United Airlines–

This company started using DevOps for testing and changed its previous method of testing.

3. Amazon and Netflix–

To control a large amount of traffic, this company started adopting DevOps.

4. Adobe–

The issues faced by this company were about the monolithic architecture. For that, they switched to CI/CD pipelines for end-to-end communication.

DevOps Advantages and Disadvantages:

Let’s have a look at some advantages and disadvantages of DevOps in this DevOps tutorial.

1. Advantages-

Improved Collaboration.
Continuous software delivery.
Faster time to market.
Scalability and Flexibility.
Increased stability and reliability.
Enhanced customer satisfaction.

2. Disadvantages-

Complexity.
Steep learning curve.
Security concerns.
Increased dependency on automation.
DevOps is not cheap.

Future Scope of DevOps:

The future of DevOps is promising and it will definitely continue to evolve as organizations have recognized the benefits of adopting DevOps practices. The scope of DevOps is wide-ranging and holds significant potential for many industries. Let’s scroll through this DevOps tutorial and learn about some of the industries in which the DevOps future is bright.

IT Industry.
Telecommunication.
Healthcare.
Hospitality.
Banking.
Insurance.
Manufacturing.
Inventory Management.

Conclusion:

Hence, while concluding this DevOps tutorial, I would say that DevOps is a powerful and high-demand approach that enables organizations to deliver high-quality software at a rapid pace. By embracing collaboration, automation, and continuous delivery, teams can achieve greater agility, efficiency, and customer satisfaction. If you want to kickstart your career and wish to get into a rewarding profession don’t hesitate to join DevOps Course by Henry Harvin to become a pro in it.

FAQs:

Q1. Can I learn DevOps as a beginner?

Ans. Yes, anyone can learn DevOps from scratch.

Q2. Does DevOps include Coding?

Ans. Yes, DevOps includes coding so as to be sure about producing high-quality data.

Q3.Which is the Best Institute to start a career in DevOps?

Ans. Get enrolled in Henry Harvin’s DevOps Course and experience the difference

Q4. What is the Future Scope of DevOps in India?

Ans. The future scope of DevOps in India is promising, driven by the increasing adoption of DevOps practices.

5. How stressful is it to work as a DevOps professional?

Ans: DevOps engineers experience more stress than the average IT professional. The research indicates that DevOps experience the highest stress levels due to a perception that their abilities are inadequate for their roles.