DevOps

What is DevOps?

DevOps is collaboration between Development, Testing and Operations Team. In Simple words it is all about Tools & Automation.To deploy the code into any environments like Dev or Prod in faster and automated way, Devops is the best choice to do. The word ‘DevOps’ is a combination of two words Dev+Ops which means ‘development’ and ‘operations.

DevOps helps us to increases the speed of delivering applications and services. It will help the companies to serve their customers better and strongly in the market.

Devopers + Testings + IT Operations

In this tutorial, we are going to learn the below concepts. For shortcuts click in the below links.

What is DevOps?
What is DevOps Lifecycle?
Why do we need DevOps?
How to use DevOps?
When to adopt DevOps?
When not to use DevOps?
What is DevOps Work Flow?
How is DevOps different from Agile?
What are DevOps Principles?
What are DevOps Tools?

What is DevOps Lifecycle?

DevOps is integration between development and operations. Understanding Complete DevOps is difficult without knowing DevOps lifecycle.

Here is explanation about the Continuous DevOps life-cycle:

1. Development

In this DevOps stage the development of software takes place constantly. In this phase, the entire development process is separated into small development cycles. This benefits DevOps team to speed up software development and delivery process.

2. Testing

QA team use tools like Selenium to identify and fix bugs in piece of code.

3. Integration

In this stage, new functionality is integrated with the code, and testing takes place. Continuous development is only possible due to continuous integration & testing.

4. Deployment

In this phase, the deployment process takes place continuously. It is performed in such a manner that any changes made any time in the code, shouldn’t affect the functioning of high traffic website.

5. Monitoring

In this phase, operation team will take care of the inappropriate system behavior or bugs which are found in production.

Why do we need DevOps?

DevOps help developer, testers and IT Operation to develop and deliver the project in faster way. Coding & operation teams have their separate timelines and are not in synch causing further delays. Before DevOps, the development and operation team worked in isolation way.

Testing and Deployment works activities in isolation way after design-build, so they consumed more time than actual build. Without using DevOps, team members need to spend more time in testing, deploying, and designing instead of building the project on time. Manual code deployment leads to human errors in any env like Dev or Prod. DevOps will help every team to check the status of the project. Every team can participate and work together.

How to use DevOps ?

DevOps works or allows Agile methodology to implement CICD (Continuous Integration and Continuous Delivery). This helps them to launch project faster into the market.

Other Important reasons are:

Reproducibility: Version Control is easy in DevOps, it can help developer to restore earlier version anytime.

Predictability: DevOps makes low failure cases of new releases

Maintainability: Hectic Work can be easily avoided when new release crashing or trouble the current system.

Time Save: DevOps reduces time up to 50% through streamlined software delivery.

Greater Quality: DevOps helps developers to improve quality of application development.

Less Risk: DevOps also helps in security aspects at software delivery lifecycle. It will helps to reduction the defects.

Resiliency: The state of the application software system will be more stable, secure, and changes are auditable.

Cost Efficiency: DevOps helps in offering less cost efficiency in the software development process this aspiration of IT company’s management.

Big Code to Less code: DevOps help us Breaking larger code base into small pieces, as devops follows agile programming method.

When to use DevOps?

DevOps will be used for large distributed applications like eCommerce web sites or applications hosted on a cloud platform.

When not to use DevOps?

There are critical applications in market like bank, military, power and other sensitive data sites. Such applications need strict access controls on the production environment, a detailed change management policy, access control policy to the data centers.

What is DevOps Work Flow?

Workflows provide the sequence in which input is provided. It also tells about actions are performed, and output is generated for an operations process.

How is DevOps different from Agile?

Communication between Customer, Developer and Operation in IT process.

Agile fills the gaps in Customer and Developer communications

DevOps fills the gaps between Developer and IT Operations communications

What are DevOps Principles ?

Here, are 6 important principles to work with DevOps:

1. Customer-Centric: DevOps team must take customer-centric action for that they should constantly invest in products and services.

2. End-To-End Responsibility: The DevOps team should provide performance support until they become end-of-life.

3. Continuous Improvement: DevOps culture focuses on continuous improvement to minimize waste. DevOps continuously speeds up the improvement of product or services offered.

4. Automate Everything: Automation is a vital principle of DevOps process. DevOps is not only for the software development but also for the complete infrastructure landscape.

5. Work As a Team: In the DevOps culture role of the developer, and tester ,IT Operation are already defined. All they needed to do is work as one team with complete.

6. Monitor and Test Everything: It is important for DevOps team to have a robust monitoring & testing procedures.

What are DevOps Tools?

The difficulty faced in large DevOps Team that maintain large huge IT infrastructure can be classified briefly into six different categories.

Infrastructure Automation

Configuration Management

Deployment Automation

Performance Management

Log Management

Monitoring.

Infrastructure Automation

Amazon Web Services (AWS): Being cloud service you do not need to be physically present in the data center. Also, they are easy to scale on-demand.

Configuration Management

Ansible/Chef: It is a useful DevOps tool for achieving speed, scale, and consistency. It can be used to ease out complex tasks and perform configuration management. With this tool, DevOps team can avoid making changes across ten thousand servers. Instead, they need to make changes in one place which is automatically reflected in other servers.

Deployment Automation

Jenkins: This tool facilitates continuous integration and testing. It helps to integrate project changes more easily by quickly finding issues as soon as a built is deployed.

Log Management

Splunk: This is a tool solves the issues like aggregating, storing, and analyzing all logs in one place.

Performance Management

App Dynamic: It is DevOps tool which offers real-time performance monitoring. The data collected by this tool helps developers to debug when issues occur.

Monitoring

Nagios: It is also important to make sure people are notified when infrastructure and related services go down. Nagios is one such tool for this purpose which helps DevOps teams to find and correct problems.