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DevOps Tutorials

DevOps Tutorials For Beginners

DevOps Video Tutorials | Learn DevOps in 3 Hours | Must Watch it!

Our DevOps tutorial introduces the reader informally to the basic concepts and features of DevOps Technology. We hope these DevOps Tutorials are useful and will help you to get the best job in the industry. These DevOps Tutorials are prepared by DevOps Professionals based on MNC Companies’ expectations. Stay tuned we will update New DevOps Tutorials Frequently. If you want to learn Practical DevOps Training then please go through this DevOps Training in ChennaiDevOps Training in Bangalore, and DevOps Training in Pune.

Besant Technologies supports the students by providing DevOps Tutorials for job placements and job purposes. DevOps is the leading important course in the present situation because of more job openings and the high salary pay. We provide the DevOps online training also for all students around the world through the Gangboard medium. These DevOps Tutorials were prepared by our institute experienced trainers.

These tutorials are for intermediate to somewhat advanced DevOps professionals, but even if you are just a beginner or fresher you should be able to understand the tutorials by examples and explanations here we give.

What is DevOps? Introduction to DevOps:

DevOps became a buzzword today and many people and organizations are using it often. Internet and Software have revolutionized the world and its industries such as entertainment, shopping, banking, etc. Those days are gone when Software rarely supported a business; today it has become an essential component of every part of a business. Using Softwares like online services or applications, Companies interact with their customers. They even use software to maximize operational efficiencies by transforming every component of the value chain, such as communications, logistics, and operations. Likewise, physical goods companies transformed how they design, build, and deliver products using industrial automation throughout the 20th century, companies in today’s world must transform how they develop and deliver software.

The main aim of the DevOps is to create High-quality software, more rapidly and with more reliability while causing greater collaboration and communication between Development and  IT Operations team by removing the barriers between the two. In some companies, both development and operation works are handled by engineers. With the help of DevOps, the two teams work together to optimize both the productivity of developers and the reliability of operations. Before understanding what exactly DevOps is?, Let us first understand why DevOps came into existence.

Before the DevOps, the traditional waterfall model was used.

Waterfall Model:

Let us check how software is developed in a traditional way using a Waterfall Model.DevOps Waterfall Model

First, the complete requirement is gathered and SRS is developed. This system is designed and planned using the SRS. In the third step, Implementation of the system takes place. Then the system is tested and its quality is assured;  finally, the system is deployed to the end-users, and regular maintenance of the system is done.

Waterfall Model Challenges:

The Waterfall model worked very well for several years; however, it had some challenges. Let us see those challenges:devops tutorial - waterfall model challenges

There were majorly two challenges from a Developers point of view:

  • After Development, there will be a huge waiting time for code deployment.
  • As the development and deployment time was high, the Pressure of work on old, pending and new code was high.

Like Developers, Operations was also not completely satisfied. There were four major challenges they faced:

  • It was challenging to maintain 100% uptime of the production environment.
  • Tools that are used to automate infrastructure management are not effective.
  • The number of servers to be monitored continuously to increase and hence creates the complexity.
  • It was tough to diagnose and provide feedback on the product.

Probable Solutions To Address The Challenges Faced With Waterfall Model:

From a Developers point of view:

  • A system that enables code deployment in such a way that there should not be any delay or wait time.
  • A system where the work takes place on the current code itself means development sprints are well planned and short.

From an Operations point of view:

  • The system should be up and have at least 99% uptime.
  • Systems and Tools are there in place for easy administration.
  • Effective monitoring and feedbacks systems should be established.
  • Better Collaboration between Development & Operations team.

Now it is the right time for us to know what is DevOps and how it overcomes these challenges.

What is DevOps?

DevOps is a term that is made by merging the two words 1) Development 2) Operations. Both the team has distinctive responsibilities in the Application release management cycle. It is more related to collaboration, communication, feedback between different stakeholders such as testers, developers, infrastructure teams, deployment teams, configuration management teams, etc. DevOps combine developers and operations teams to improve collaboration and productivity.

In case of DevOps, a single group of Engineers such as system admins, developers, Testers, QA’s, etc. turn into DevOps Engineers and take the responsibility of the Application (Software) right from requirement gathering to development, to testing, to infrastructure deployment, to application deployment and finally gathering and monitoring feedback from the end-users, then again implementing the changes. This process never ends, it is in the form of a cycle and the logo of DevOps is designed in the same way that is infinity, what could have been a better symbol than this to symbolize DevOps?Let us see how DevOps addresses challenges that are faced by Development and Operations.

The below table shows how DevOps takes care of the Dev Challenges.

Dev Challenges DevOps Solutions
Waiting time for deploying a code Continuous Integration guarantees that there will be a quick deployment of code, faster testing, and speedy feedback mechanism. Thus, there will be no time delay in deploying code and therefore the developer focuses on building the current code.
The pressure of work on pending, old and new code

The below table shows how DevOps takes care of Ops Challenges.

Ops Challenges DevOps Solutions
Troublesome to maintain uptime of the production environment. Virtualization/Containerization makes sure that there is a simulated environment created to run the application because containers offer good reliability for service uptime.
Tools that are used to automate infrastructure management are not effective. Configuration management helps you build and execute configuration plans, constantly provision the system, and actively handling their infrastructure.
The number of servers to be monitored continuously to increase and creates complexity. Continuous MonitoringFeedbacks system and effective monitoring are achieved through Nagios. Therefore, effective administration is confirmed.
Difficult to diagnose and provide feedback on the product.

However, one question is still being circulated in your mind that how to implement DevOps. To actualize and expedite DevOps process instead of culturally accepting it, one also requires different DevOps tools such as Docker, Puppet, AWS, Jenkins, Selenium, Chef, GIT, etc to get automation at various stages which helps in getting Continuous Development, Continuous Integration, Continuous Testing, Continuous Deployment, Continuous Monitoring to deliver a quality software to the customer very quickly.

DevOps Lifecycle can be mainly categorized into the below DevOps Stages:

  • Continuous Development
  • Continuous Integration
  • Continuous Testing
  • Continuous Monitoring H
  • Virtualization and Containerization

These stages are considered as the building blocks to get DevOps as a whole.

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