Most software professionals have heard about DevOps. DevOps is not complete without knowing the DevOps Life cycle. This blog entry will provide some insight into the DevOps cycle.
This blog will provide you with a lot of information about the DevOps life cycle, which will be beneficial towards possible certification.
In this blog we will cover the following topics:
- Why DevOps?
- What is DevOps?
- What is DevOps Life cycle?
So let us start our discussion on this amazing topic.
Before we know what DevOps is, it is very important to know how DevOps came into existence. Before DevOps, we had the waterfall model and the agile model for software development. So let us have a look at the waterfall model.
The waterfall model can be defined as a steady process in the system or software development that follows a top-down approach. In this model, the steps were straightforward and linear. There are several phases in the waterfall model, including Requirement Definition, Software Design, Implementation, Testing, Deployment, and Maintenance.
When using the waterfall model, software development companies had to spend a lot of time getting their products right. Apart from this, there are many drawbacks to this model.
The Agile methodology emphasizes continuous development and testing during all stages of the project life cycle. Unlike the Waterfall model, both development and testing are alike. The adoption of agile practices improved development, but operations were left behind since they were not up to speed.
Developing and releasing software took longer because Operations Engineers and Developers did not collaborate. Companies realized they needed to improve team collaboration and speed up software development.
Hence, the DevOps approach was born. Continuous software delivery is now enabled by DevOps with less complex problems to fix and faster resolutions.
What is DevOps?
- Development and operations are two words that make up the term DevOps. Development, testing, deployment, and operations can be managed by a single team with DevOps.
- The purpose of DevOps is to shorten a system’s development life cycle while delivering features, fixes, and updates frequently in close alignment with the business objectives.
- DevOps is a software development approach that enables high-quality software to be developed more quickly and more reliably. The process consists of various stages such as continuous development, continuous integration, continuous testing, and continuous deployment.
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What is DevOps Life cycle?
In addition to continuous development, continuous integration, continuous testing, and continuous deployment, there are also various phases known as DevOps Life Cycle. Let us now examine each phase of the DevOps life cycle.
Continuous Development –
Software coding and planning are involved in this phase. During the planning phase, the vision for the project is decided and the code is developed.
Continuous Testing –
This is the stage where the developed software is continuously tested for bugs. Automation testing tools like Selenium, TestNG, JUnit, etc., are used for Continuous Testing. Multiple codebases can be thoroughly tested simultaneously by these tools, ensuring that the functionality is not flawed. The test environment can be simulated using Docker Containers in this phase.
Continuous Integration –
DevOps lifecycle begins with this stage. The practice involves the developers committing changes more frequently to the source code. Depending on the frequency, it may be daily or weekly. The process then builds every commit, so problems can be detected early if they are present. Coding involves not only compilation, but also code review, unit testing, and integration testing.
Continuous Deployment –
A code deployment to production servers occurs at this stage. A reliable deployment of the code on all servers is also essential. I would like to first try to understand a few things about Configuration management tools. Continuous Deployment (CD) can be achieved with this collection of tools.
Continuous Monitoring –
Continuous monitoring of the performance of your application is a very crucial part of the DevOps life cycle. It is here that information about how the software was used is recorded. To recognize the proper function of the application, this information is processed. During this phase, system errors such as low memory and unreachable servers are resolved.
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