<p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Imagine building an application to help with a restaurant business. The application will contain several different parts that handle the different processes that are involved in the business. For example, there will be billing and payment collection, order placement, customer database, and much more. While this is a great setup for an application, these many separate services can be hard to manage. This is where microservices in Kubernetes come in to organize the services more effectively</span></p><h2 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Microservices in Kubernetes: How do they work?</span></h2><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Before we learn more about microservices, let us take a look at what Kubernetes is. Kubernetes is an open-source platform that is used for managing containerized applications, by scaling, maintaining, and deploying containers. This is a great tool for DevOps as it simplifies complex and large-scale processes in a way that makes deployment quicker and more efficient. It also promotes independent yet collective functioning of different aspects of the same application, improving flexibility.</span></p><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">In the next section, we will take a look at how Kubernetes works and how microservices come into play in DevOps, especially with Kubernetes.</span></p><h3 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Understanding Containers in Kubernetes</span></h3><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Microservices is not something specific to Kubernetes. But it becomes easier to understand microservices when we know what containers are and what is containerization in Kubernetes. Understanding containers and how they work is crucial to understand how Kubernetes as a platform works. </span></p><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">A container is an individual package that contains an application and its essentials, including the code, its libraries, etc. The function of containers is to allow the functioning of applications in an isolated environment, whatever the infrastructure may be. Multiple containers can co-exist in a pod, and these structures make it easier to deploy and scale applications.</span></p><h3 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Understanding Microservices</span></h3><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Microservices is not something that is particular or specialized in Kubernetes. It is an architectural style that is highly becoming popular in software development and DevOps in the recent few years. Applying the microservices style in Kubernetes can be a great advantage as the containerization of applications is made more effective and manageable.</span></p><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">When it comes to applying microservices, it is done on the level of the containers. With microservices, an application is divided into manageable parts, and all of these parts are then effectively organized by Kubernetes. Consider the example given at the start of the article. That is an easy way to understand how microservices work.</span></p><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">While containerization is one way to implement microservices, there are a few other methods as well. These include deploying microservices on virtual machines and metal servers.</span></p><h2 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Managing Microservices in Kubernetes</span></h2><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Here are some ways in which you can manage microservices in Kubernetes efficiently to increase DevOps productivity.</span></p><h3 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Deploying Microservices</span></h3><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">The first step in this process is to create a Kubernetes Deployment for each microservice. As Kubernetes manages containerized applications, it effectively takes care of the replicas of microservices that need to be deployed across the system. Not only does Kubernetes monitor it continuously, but it also restarts a new microservice in case of a failure.</span></p><h3 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Monitoring Microservices</span></h3><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Monitoring involves collecting data and metrics from the microservices as well as the nodes. With the usage of specific tools, not only can you collect these data and read insights about the performance, but you can also visualize the data to get a better understanding of how the process works.</span></p><h2 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Salient Features of Microservices in Kubernetes</span></h2><ul><li><span style="font-family:Arial,sans-serif;"><strong>Enhancing Scalability:</strong> The wonder of microservices is that developers can focus on certain aspects of an application that need regular updates and upgrades instead of working on the entire application. Microservices are handy in this way because they improve scalability on a finer level, helping developers understand certain aspects of an application while not involving the other parts of it.</span></li><li><span style="font-family:Arial,sans-serif;"><strong>Compartmentalization:</strong> The best and most fundamental feature of microservices is compartmentalization. Multiple components of the same application function independently next to each other and can be connected if required. Kubernetes manages all these containers effectively to deliver a comprehensive working model.</span></li><li><span style="font-family:Arial,sans-serif;"><strong>Quick Modifications:</strong> As microservice codes are smaller, they are easy to update and modify. This gives more flexibility to alter microservices and their containers per the application's needs.</span></li></ul><h2 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Why Use Kubernetes for Microservices?</span></h2><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Since microservices is an architectural framework, different platforms can be used to apply the framework. Kubernetes is one of the best options to include microservices as it offers multiple benefits.</span></p><ul><li><span style="font-family:Arial,sans-serif;"><strong>Self-Healing:</strong> One of the best features of Kubernetes is that it can automatically detect and repair any issue found in any container. This makes it the perfect platform to facilitate microservices as it reduces downtime and helps in better management of the containers.</span></li><li><span style="font-family:Arial,sans-serif;"><strong>Increased Resilience:</strong> Based on the changes in the workload, Kubernetes can allocate and adjust the number of containers. The efficient load-balancing feature also helps constructively apply the microservices architecture.</span></li><li><span style="font-family:Arial,sans-serif;"><strong>Easily Portable: </strong>The reason why many businesses and organizations prefer Kubernetes for microservices is the high level of flexibility and portability that the platform offers. Since the containers can operate on both public and private clouds, businesses can migrate the services they need easily without disrupting workflow.</span></li><li><span style="font-family:Arial,sans-serif;"><strong>Automation:</strong> Kubernetes is preferred over other platforms as it seamlessly automates the entire process and workflow of managing containerized applications, regardless of the number of complex and simple containers the application is made of.</span></li></ul><h2 style="text-align:justify;"><span style="font-family:Arial,sans-serif;">The Bottom Line</span></h2><p style="text-align:justify;"><span style="font-family:Arial,sans-serif;">Kubernetes is a platform/tool used for managing containerized applications, and it is also an essential tool for improving DevOps processes in any organization or business. When used right, Kubernetes can be a powerful tool that helps you manage and deploy your microservices successfully. Since microservices is an architectural setup, Kubernetes can be the right tool to implement the setup and make the best out of containerized applications. Microservices in Kubernetes can offer multiple benefits, such as effective scalability, automatic regeneration, increased flexibility, and enhanced security. Since Kubernetes is also not platform-specific, this combination can be a great way for developers to develop and deploy applications quickly and efficiently.</span></p><p style="text-align:justify;"><span style="font-family:Arial, sans-serif;">Read More</span></p><p style="text-align:justify;"><a href="https://devopsden.io/article/troubleshoot-an-error-deploying-in-kubernetes-cluster">https://devopsden.io/article/troubleshoot-an-error-deploying-in-kubernetes-cluster</a></p><p style="text-align:justify;"><span style="font-family:Arial, sans-serif;">Follow us on</span></p><p style="text-align:justify;"><a href="https://www.linkedin.com/company/devopsden/">https://www.linkedin.com/company/devopsden/</a></p>
