DevOps – The Definitive Guide with Principles & Benefits

DevOps

Explore DevOps with its definition, history, principles, benefits, lifecycle, and difference with the old process. Learn about DevOps Engineer & his skills.

DevOps is a culture that promotes a healthy alliance between the operations team and the development team. The main objective of this culture is to build, test, and release the software faster and more reliable. This allows the organizations of the companies to serve the customer better and compete better in the market. The terms DevOps was formed by combining towards – development and operations, and this signifies that there is a cultural shift that unites the development team and operation teams. So, in simple terms, one can define DevOps as an alignment of development and its operations with better communication and collaboration.

Intending to innovate new software faster, more efficient, and deliver higher values to business and customers, the DevOps culture unites agile, continuous delivery, and git.

In this article, you will learn-

History of DevOps

We can trace the history of DevOps back to sometime between 2007 and 2008. People widely believe that the DevOps movement was started in this was the period. It was a time when its operations and software development communities united and complained about a fatal abnormality in the Information Technology Industry.

They collectively fought against the traditional software development model. In these conventional software development model, the developers and IT professionals had separate departmental leadership and separate key performance indicators by which the management team made a judgment on them. They also worked on different floors and sometimes even in different buildings. The developers and IT professionals often found themselves standing against each other in terms of objectives. Ultimately, all these resulted in delayed delivery and even unhappy customers.

All these led to the development of a culture known as DevOps culture, where both the developers and IT professionals collaborated to produce a better product more efficiently.

Principles Of DevOps Culture

Principles of DevOps culture

The six principles, which are essential while adopting DevOps, are as follows –

  1. The DevOps team must take the decisions which are beneficial to the customer, and for that, they should continually invest in products and services.
  2. The DevOps team should provide performance support and maintenance to the product until they are withdrawn from the market. This increases the level of responsibility e am on the team members as well as the quality of products developed.
  3. The DevOps culture mainly focuses on continually improving the product, or the design to minimize wastage as much as possible. It continuously accelerates the improvement of the product or services being offered.
  4. In DevOps culture, everything is automated. Automation is a necessary principle of the DevOps process. Apart from being applicable for software development, it is also vital for the entire infrastructure landscape.
  5. In a DevOps culture, roles like developer, designer, and tested are already defined. All the team members have to do is to work together as one team with complete cooperation with each other.
  6. DevOps team has to monitor and test almost every procedure to make the final product error-free and highly popular among the customers in the market.

Benefits of using DevOps culture

Benefits Of Using DevOps Culture

Before DevOps, the development and operation teams used to work in complete isolation. Here, testing and deployment work completely isolated activities, and they were done only after design-build. Hence the user consumes a lot of time. These are some of the problems solved by the DevOps operation.

Following are some popular benefits of DevOps operation –

  1. The most significant reason for the success of the DevOps team is its collaboration and increased transparency among the team members. The development team and its operations team combine to work together to develop better software. They have massive respect for each other and a common goal – to deliver an excellent product to the customers.
  2. During new releases, the DevOps operation significantly lowers the failure rates of the product. This is because of increased transparency and accountability among all the team members. Before DevOps, feelings like, “not our responsibility” were more prevalent.
  3. The DevOps culture reduces the time to market up to 50% through streamlined software delivery. And since speed is everything, DevOps are are primarily preferred in delivering software faster. The team starts practicing DevOps and release the products more frequently and with higher quality and stability.
  4. The DevOps operation ensures improved cost-efficiency in Software Development Life Cycle processes, something which is an aspiration for every management team of IT companies.

DevOps lifecycle

DevOps Lifecycle

DevOps is an in-depth integration of development and operation. Understanding DevOps is not possible without knowing the DevOps cycle.

  1. Development: In this DevOps stage, the continuous development of software takes place. In this space, the whole development process is broken down into small development cycles. This helps the DevOps team to accelerate the software development and delivery process.
  2. Testing: In the new piece of code, the quality assurance team uses tools like selenium to identify and fix bugs.
  3. Integration: New functionality is integrated into this stage, with the pre-existing court, and after that, testing takes place. Continuous integration and testing make ongoing development possible in the DevOps cycle.
  4. Deployment: the deployment process takes place regularly in this phase. It is performed in a way that any changes made any time in the court will not affect the working of a high traffic website.
  5. Monitoring: in this phase, the operation team takes care of inappropriate system behavior or bugs, which can be discovered in Production.

Differences between Old Processes and DevOps

Differences Between Old Processes And DevOps

Old Process DevOps
After receiving an order for new servers, the Development team begins their work on testing. And the Operations team works on general paperwork as required in the company to deploy the infrastructure. After receiving an order for new servers, the Development and Operations teams work collectively on the paperwork to set-up the new servers. This ends up, resulting in better visibility of the infrastructure requirement.
Projection about failover, data center locations, redundancy, and storage requirements are distorted as no inputs are accessible from developers who have in-depth knowledge of the application. Projection about redundancy, failover, disaster recovery, data center locations, and storage requirements are exact due to the inputs from the developers.
The operations team has no idea about the development of the Development team. The operations team develop a plan as per their perception. In DevOps, the Operations team is entirely aware of the progress the developers are making. Operations team communicate with developers and jointly develop a plan that caters to the IT and business requirements. They also take the help of advanced Application Performance Monitoring (APM) Tools.
Before go-live, the load testing crashes the software or product. And hence, the release is delayed. Before go-live, the load testing makes the application a bit slow. The development team quickly fixes the issues. The app is released on time.

Understanding the conditions for DevOps to work

When DevOps works

With DevOps, the team works to eliminate any latency that exists with the development and operations team, which can also mean that the team automats almost everything. The DevOps culture is all about continuous development, uninterrupted integration, constant testing, and continuous deployment. The objective is that the developer rites the court, defines the data, process off button, and the programming has to go through a series of tools at places it on the end product system, ready to run.

Since the growth of cloud computing, much of the interest is given in this arena. Since the cloud can use the centralized deployment of applications, developers can update the court almost any time they need to. So the days of version 1.0, 1.1, 2.0 are gone, and people consider it to be a positive step.

When DevOps Works

The software development project that can generally increase game speed and agility from DevOps should use that method. But it will be a bad idea to apply the DevOps culture to all the software development projects. One should at least try to keep himself away from using DevOps culture on the projects which are not directly related to software.

When DevOps does not work

In the case of some software development projects and most of the planning and system design projects, DevOps are generally highly unsuccessful. DevOps are nearly always a misfit for older systems like COBOL and ISAM. Systems like these do not work well with modern tools. When we apply DevOps, most of these old types of software systems quickly fail.

When DevOps Does Not Work

DevOps generally avoid in the case of planning and design. Walking to the design of a software system systematically without box iteration allows the architect to create a much more efficient design, and the model can be completed in less time as compared to DevOps culture. This is because the design of an application is not the building of the application; it is the process where the developing teams think how the application will be effectively implemented. Moreover, the design of the databases is the process of thinking about their relationship with the app and requirements. When the teams apply the DevOps principle to designing, then they are doing more automation of the design, instead of thinking about them. This results in the design that can be easy to change but is full of flaws.

Relationship of DevOps culture to other approaches

Agile

Both agile methodology and DevOps culture have supporting roles – standard DevOps practices like automatic build and test, continuous delivery, and constant integration originated in the agile world, which informally dates back to the 1990s and officially to 2001. DevOps generally address gaps between developers and their operations or infrastructure, whereas agile has to address the communication gap between customers and developers. At the same time, DevOps mainly focuses on using develop software, whether the designing of the concerned software is done with the help of agile or any other methodology.

Agile Model

Agile DevOps
Agile methodology stresses on breaking down barriers between developers and management. DevOps is about software deployment and operation teams.
The Agile Methodology addresses the gap between customer requirements and development teams. Addresses the crack between development and Operation team
Focuses more on functional and non-functional readiness It focuses on operational and business readiness.
Agile development pertains mainly to the way development is thought out by the company. DevOps focuses on deploying software in the most reliable and safest ways. These ways aren’t necessarily always the fastest.
Agile development puts a significant emphasis on training all team members to have varieties of similar and equal skills. So, when something goes wrong, any team member can get support from any member when the team leader is not present. DevOps likes to divide and win, spreading the skill set between the development and operation teams. It also maintains regular communication.
Agile development works on “sprints.” It signifies that the time table is much shorter (less than a month), and numerous features are to be created and released in that phase. DevOps performs well for consolidated deadlines and benchmarks with significant releases, rather than smaller and more frequent ones.

If you consider agile software development, it has an abundance to focus for the pre-production phases of the project. Agile best operates around the way teams are structured; how project scope is broken into iterations or sprints; how does the unit perform ceremonies; ability to do frequent business checkpoints, etc. All these help towards releasing more relevant and faster software packages. However, it doesn’t talk much about how to make public this software to Production and what happens next. DevOps takes this discussion to the next level, and it’s focus includes:

  • how to manage Post-production
  • does the team have enough monitoring and feedback to recognize issues early in Production
  • how much the software delivery process is automated – think Continuous Integration/Continuous Delivery – thus, there is less dependence on human intervention and more on tooling to support your delivery. “If you can automate it, why do it manually.”

“All of these are extensions to Agile!”

Related Articles.

ArchOps

ArchOps is an extension of DevOps practice. It commences with software architecture artifacts, instead of starting from the source port, for operational deployment. ArchOps states that architectural models are first-class entities in software development, implementation, and operations.

TestOps

What DevOps is to software development, TestOps is to hardware development. A toolchain helps to link together the context of test operations and designs. In the case of hardware, the meaning of design is EDA tools and CAD department, whereas the purpose of the test is electronic measurement equipment like oscilloscopes and others.

Continuous delivery

Continuous delivery is an essential process of delivering the software or its updates to Production in smaller increments, making sure that the software can be released at any given time. So, we can also say that continuous delivery is like a pipeline or a life cycle of a code. Here the system which is freshly developed or updated by the software team is tested at different stages, both wire manual automatic tastes and passes both the manual and automatic stage gates and get into Production.

Both continuous delivery and DevOps have similar goals and open coexist, but there are noticeable differences between the two. Continuous delivery is generally focused on automatic processes in software delivery, whereas DevOps also focuses on the organizational change to support a great combination of many functions involved.

DevOps and continuous delivery e have a common background in the agile methodology and lean thinking – small and frequent changes with focused value to the end customer. What are the significant functions of continuous delivery is to focus on making sure that the software is always in a releasable state no matter what the time, throughout its life cycle. This makes it cheaper and risks free to deliver the software.

DataOps

DataOps is an automatic, process-oriented method, which is used by analytics and data teams to improve and cut down the cycle time of data analytics. In simple words, The application of continuous delivery and DevOps data analytics has been termed as DataOps. The main task of DataOpsis to integrate data integration, data engineering, data security, data quality, and data privacy with different operations. With the help of principles of agile development, DevOps, and statistical process control, DataOps uses lean development to improve the cycle time of digging up value from data analytics.

WinOps

WinOps is a term used to refer to the cultural movement of DevOps practices in a Microsoft centric view. It stresses the use of cloud, automation, and integrated development and information technology operations into one fluid method on the windows platform.

DevSecOps, shifting security left.

DevSecOps is an extension of DevOps to allow security practices to get integrated into the DevOps approach. The traditional centralized security model has to adopt a federated model that helps is the delivery team the ability to factor the right security controls into the DevOps practices.

Brief introduction about DevOps Engineer

DevOps helps development and operations teams to develop the collaboration process. A DevOps Engineer generally works with IT developers to aid better development, synchronization among operations, and testing the functions by automating and streamlining the integration and implementation processes.

Brief Introduction About DevOps Engineer

A DevOps Engineer has to manage the IT infrastructure as per the need of the supported software code that is dedicated to a hybrid multi-tenant environment. There is a requirement to have some resources to get the appropriate implementing model and also for approving and supervising the performance.

In DevOps culture, there is a need to have regular and incremental changes in the code versions so that proper testing and deployment are possible. It may not always be possible for DevOps Engineers to do the coding from scratch, but they should be aware of it.

There is a requirement for DevOps Engineers to join various elements of coding along with libraries and software development kits and put multiple components of SQL data management or messaging tools together for running the software release with the operating system and the creation infrastructure.

Significant Skills Required by a DevOps Engineer

  • Proficiency in Sysadmin
  • Should be able to deploy virtualization
  • Hands-on experience in network and storage
  • In-depth knowledge of coding
  • Excellent communication skills
  • Good understanding the automation tools
  • Good knowledge about the security aspects of the IT organization
  • Good knowledge of testing

Tools Used by a DevOps Engineer

  • Git and GitHub
  • Jenkins
  • Selenium
  • Kubernetes
  • Puppet
  • Docker
  • Nagios
  • Chef
  • AWS

The role of a DevOps Engineer is not just taking care of one particular task or taking up one accountability. He has to switch between numerous parts to do justice to the position. There is a need to have a variety of skillsets, like coding, integration, and testing. Responsibilities of the DevOps Engineer also comprise of solving the organizational troubles and improving the business process.

Edureka offers a detailed video course on DevOps. I have embedded their DevOps course video below.

I hope you find this guide useful. If so, do share it with others who are excited to explore DevOps and other topics that we publish here on our blog. If you have any questions related to this article, feel free to ask us in the comments section.

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