DevOps Tutorial

Topics Covered

The topics covered in this DevOps tutorial are:

• What is DevOps?
• Best DevOps Tools to Learn and Master
• Kubernetes vs. Docker
• How to Become a DevOps Engineer?
• Top DevOps Interview Questions and Answers

Why Learn DevOps?

DevOps is the approach of software development wherein the team of development collaborates with the operational department. In almost every stage of software development, one should keep three elements in mind, viz, automation, continuous delivery, and site reliability. 

Following are the benefits of DevOps that will be covered in this DevOps tutorial:

• It has brought innovative changes in the culture of software development. As the entire team participates in the developmental process, they aim for the common goal.
• With continuous integration, there is a reduction in the manual processes involved in testing and development.
• It enhances the chance of working with the renowned team of DevOps, which further boosts one's interpersonal relationships.
• With the changing trends in the IT sector, the demand for skilled and professional DevOps experts is increasing. 

Applications of DevOps

DevOps is not only for the operators and the developers. Instead, it is for administrators like test engineers, project managers, and others for several segments of administrators. Its several practices allow the organization to provide more reliable and faster updates to the customers. The DevOps' core aspect revolves around the Agile, which was a significant influencer of its creation. 

Following are some of the best practices of DevOps that you should know:

Microservices: Microservice architecture is the design approach that builds a single app as a package of small services. Each service in the application communicates through a well-defined interface. It uses a lightweight mechanism, usually, HTTP-oriented API. 

• Infrastructure as Code: It is the practice in which software development techniques and codes create and manage infrastructure. The system administrators and developers interact through API-driven models of cloud. Instead of setting and configuring them manually, they interact with the infrastructure programmatically. 
• Monitoring and Logging: Any organization inspects logs and metrics to see how the infrastructure and application's performance impacts the end-user experience. Active monitoring is very crucial to make sure that services are available 24/7 without any disruptions. 
• Continuous Integration: It prompts continuous code testing and merging. The main aim is to find the bugs and defects early and improve them without wasting much time. It further reduces the time taken to release and validate new updates on software. 
• Communication and Collaboration: One of the key goals of DevOps is better communication and collaboration. The tooling and automation of the software delivery process bring the workforce under one goal of development and operation. It speeds up the communication between departments. Their teamwork allows for efficient completion of any task.

Use of DevOps in Networking: The principles of DevOps are gaining popularity in managing networking services. With the help of configuration tools, vendor hardware and deployment modes, configuration, and automation of network functions and devices have become easier. 

DevOps in Data Science: Companies are continually working to become agile. Hence, many of them are switching to DevOps for deploying codes speedily and efficiently. As it uses the holistic approach, it successfully deploys the model of data science into production. Moreover, it provides a perfect path for faster implementations.

DevOps in Testing: As per a recent survey of RightScale, various companies have chosen DevOps. To achieve speed and agility, it is essential to automate the entire process of testing and configuration.

The entire functioning of the DevOps relies on the "Agile Manifesto." However, the core of the proficient strategy is known as 'DevOps Trinity' which is:

• People and Culture: While adopting DevOps, it eliminates the silo mentality between the teams. Instead, they work for the common goal. Their only objective is to obtain quality software.
• Practices and Processes: Both DevOps and Agile go hand in hand. Hence, with the adoption of Scrum, Agile, plus automation or Kanban, organizations streamline the processes in repeatable ways. 
• Tools and Technologies: DevOps is an unsustainable model without the proper tools and technology. It enables the entire process of development and operation while making it easier.

Who Should Learn DevOps?

As per the survey released by InformationWeek, DevOps will be in high demand with minor chances of slowing down. Hence, the market demand for DevOps' qualified professionals is boosting. With the basic knowledge of different programming languages and fundamentals of Linux and specific DevOps tools, one can apply for higher posts.

With vigorous training and high-end qualification, one can apply as a DevOps engineer. Check out the DevOps tutorial to know about the courses for beginners, intermediate and advanced learners.

Different certification programs allow one to choose between different paths in one's DevOps career. There is a bundle of courses available which trains you to pursue a compelling career in DevOps. Different websites offer different training sessions and specialized courses. 

Whatever your choice, it is crucial to approach a certified institute. Some popular courses offered by almost all websites and institutes of DevOps include DevOps certification and training courses and many more.

Prerequisites

• For a beginner, basic knowledge of programming and a certification course in DevOps is a basic requisite. However, check our DevOps Tutorial to know more.
• For the intermediate level, the candidate should know about the DevOps tools and the understanding of cloud platforms like AWS and Microsoft Azure.
• For the advanced level, the certification program centers around the structured learning path suggested by industry experts. They discuss real-life case studies that involve planning, development, operation, and monitoring of the software. 

The DevOps tutorial will also guide you about the significant courses you can enroll in fast track your DevOps career.

DevOps Tutorial: Table of Contents

1. What is DevOps: DevOps Core, Working, and Uses explained

DevOps represents an era of a dynamic shift in the IT culture, which has brought the developmental and operational team together. Generally, it is the combination of philosophies and tools that improves the team's capabilities of producing results at a higher efficacy.

The core of the DevOps revolves around the Agile practices. Moreover, it has even engaged the best ESM or Enterprise Systems management. The typical process engaged in the DevOps approach is automation and Agile methodologies. It is for software developers, operators, and several segments of system administrators who aim to procure efficient and high-quality results. For in-depth understanding, read our 'DevOps tutorial.'

2. Best DevOps Tools to Learn and Master

Bridging the gap between the traditional development and operational teams, DevOps use an Agile methodology that amalgamates the two teams and prompts them to work in collaboration.

The efficient DevOps tools like Ansible, Docker, Puppet, Chef, Git, Spunk, Nagios, and Jenkins alike make the automation task easygoing.

The two biggest parts of DevOps are automation and continuity. It is the organizational needs that determine which tool is best for the particular software development. In this DevOps tutorial, you will know about the advanced tools and technology that seamlessly make organizational processes.

3. Kubernetes vs. Docker: Know the Major Differences

Being in touch with new and innovative technology is quite challenging for companies. The DevOps engineer's major role is to remain in touch with such tools that surround new technology. 

The two major tools of DevOps are Kubernetes and Docker. Both are open-source container tools and have basic differences in their setting and operation.

The list of differences is classified into different headings like the concept, networking, GUI, installation, load balancing, container setup, scalability and autoscaling, logging and monitoring, rolling updates and rollbacks, and many more.

One question that pops our mind is, which is better? Well, it depends upon the organizational requirements.

4. How to Become a DevOps Engineer: Roles, Responsibilities, and Skills Required

In any company, the development team creates a product while the operational team maintains and manages it. DevOps is the platform that ensures collaboration of the development and operation team of the organization.

DevOps Engineer is an IT professional who has a deep understanding of the entire lifecycle of software development. They research and analyze why the organization needs a shift in the model and the need for software creation. The salary of the engineers depends upon their certification and experience.

5. Most Popular DevOps Interview Questions and Answers

In the entire journey of obtaining a prolific position in DevOps career, the toughest part is to crack the interview questions and answers. Our list of 80+ questions will help you crack it with flying colors.

In this DevOps Tutorial, you will come across basic questions that the interviewer asks and consists of technical questions relating to tools, DevOps processes, relevant technology, and many more.

Start Learning Now

The first lesson of this DevOps tutorial will clear all the queries related to DevOps. Since its evolution in 2009, DevOps have brought a remarkable change in the IT sector. Organizations take keen care to deliver quality and high-end results to the users. With the better collaboration of the development and operation team, it tends to finish the projects easily and quickly. Similarly, dive deep into the basic tools and advanced learning through the consequent tutorials. So start learning devops tutorial and ensure successful completion of entire projects with the prolific collaboration of development and operation team.