Introduction to DevOps: It is the practice of operations and development in the software lifecycle from design through the development process to production support. This set of practice that seeks to reduce the gap between software development and operations for the process of developing apps, deploy and test them. It focuses on automating and monitoring all steps of software construction, from integration, testing, releasing to deployment and infrastructure management. The Objective of DevOps is to build shorter development cycles, increased deployment frequency, more dependable releases, in alignment with the business results.
CAMS Model: It is DevOps core value that stands for,
DevOps is a culture and business problem. In an early IT organization, the two major teams are development where they are engaged with creating the features and operations where they are engaged with maintaining stability. Changing these teams underlying behaviors and assumptions is how you can change in your company’s culture. This brings us ‘A’ for automation in CAMS.
Automation is a critical part of the DevOps journey. Once you understand the culture, you can create the fabric of automation to control your system and applications. Automation is the accelerator that’s going to get you all the other benefits of DevOps. If you prioritize automation as the primary approach to the problem, this brings you the ‘M’ in CAMS. It stands for measurement. Metrics tell you what’s happening and the changes made have improved anything. DevOps strongly advises you to measure key metrics across the organization. It helps you engage the team in the overall goal. It can be shared internally to the team or externally to the customers that bring ‘S’ in CAMS. Sharing ideas and problems increase the collaboration, which drives Kaizen, the Japanese word that means ‘discrete continuous improvement’.
There are 3 ways you can bring the DevOps values and bringing them to life are,
- System Thinking,
- Amplifying Feedback Loops
- Culture of Continuous Experimentation and Learning
System thinking tells that what we should to focus on the overall outcome of the entire pipeline in our value chain. Use system thinking as guidance when defining success metrics and evaluating the outcome of changes. The second way is, amplifying the feedback loops is all about creating, shortening the parts of the organization that is in the flow of value chain. It is simply a process that takes its own output into consideration when deciding what to do next. The effective feedback loops are key to product development, software development, and operations. The third way is to create a work culture of continuous experimentation. You should open to learning new things and actively trying them to see what works, and what doesn’t work. Engaging in continuous practice is required to master the skills and tools that are part of your portfolio.
Success Criteria: DevOps is all about continuous improvement. The Basic DevOps automation is not enough to drive DevOps success. It is to improve the flow of work to value stream in order deliver value to the customer. The success criteria for DevOps are depended on the company. The core things are the organizational structure that allows you to enact the change to fit, evaluate the outcome and repeat. So, embracing the change is a must. The most important skill is the ability to improve. The enterprise organization must think about these 5 criteria for DevOps success,
- Value Stream Visibility
- Business Value
- Configuration as Code
Visibility: First thing is to make the work visible. The goal of every software development company is to deliver value to the customer. The lack of visibility causes misalignment, longer development cycles, rework etc.,
Business Value: The next thing is using the common currency for value across the enterprise. It means different parts of the enterprise using the different currency to measure the work that is being delivered to the end user. For ex, the business team uses proposal items and features. The development and operation teams use releases, versions, and artifacts to the end users. In order to use a common currency, the most effective way is code commit which are work items to whatever the business value you want to use. It is a common currency for both the business and user story.
Measurement: The tools to buy for DevOps initiative offers some measurement that we need to measure the value across the pool of value stream. It is from the time to get the idea to portfolio items that get created and delivered. Once you set the baseline, you can see how the change affects the process. Measuring the process in the basis of different value stream allows areas of opportunity and bottlenecks of the problem. So, it is important to start with lean metrics. Those are,
- Cycle Time – It is how long that takes for value to make a full trip across the value stream
- Efficiency – It is the Touch time Vs Wait time. It means time to work on a project to simply sitting on the environment
- Batch Items – It means how many work items or defects in the given software groups. Decreasing the batch size allows reducing
Code Configuration: It is more important in DevOps engagement and everyone should capitalize. You need to leverage the business investment in version control practices that follow, get the flow, strategy, the way to build the production application across the entire infrastructure. It is not only the code for a production application. It will change the functionality to core components. The ultimate goal is to version everything in the software development process. So, when you have an error, it is not necessary to rollback, because we are versioned the code.
Compliance: This is the process of ensuring the deliverable elements of the software development process in compliance. This is used to takes place after the software development is done. Once the development and testing are done, when we prior handed over to production, it is hand over to the compliance team. This practice generates unnecessary risk and wastes. This must be incorporated into the value stream.
In the modern DevOps platform allows you to build all of the activities in the software development process.
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