How to manage and scale apps with Kubernetes

DevOps world is experiencing a transformative change. Microservices pattern is becoming increasingly popular and container technology has had an enormous impact in this field as it allows you to package your app in a single binary and then deploy it across different environments so that it can “work everywhere”. And this brings us to Kubernetes — a groundbreaking technology, a standard platform for orchestrating containers. Its biggest value lies in its ability to manage apps built of many containers in different deployment environments. 

In its core, Kubernetes is a complex technology. And things get even more complex once you start deploying Kubernetes at scale. While organisations are embracing this technology, there are number of challenges that are usually not easily detected from the start which may lead to consequences such high costs, failures and cluster usability. When deplpying apps in Kubernetes, you should consider a few important aspects such as the methodology and the DevOps tools you will use as well as the best practices you can leverage to achieve best results. 

In this blog, we will provide a clear overview of the key benefits of Kubernetes and then reflect on the best practices to consider and the approach you should take to manage and scale apps with Kubernetes with ease. 

Top 5 benefits of Kubernetes 

The following are some of the key benefits Kubernetes brings when managing your microservices architecture. 

Container navigation savings 

From smaller to large companies, everyone keeps using Kubernetes services as they significantly save on their automated manual processes and ecosystem management. When clusters are configured, apps perform well and with minimal downtime. Overall, Kubernetes enable efficient workflows, and minimal process repetition. 

Increased DevOps efficiency 

Container integration makes development, deployment and testing simpler. This is why developers should deploy Kubernetes as early as possible as it will allow them to test code early in the process and prevent any mistakes that can have an adverse impact on the entire process. 

Deploying workloads in multicloud environments 

Thanks to Kubernetes, workloads can now exist in a single cloud or can be spread across multiple services. One of the most important benefits of Kubernetes is that they allow simple and fast migration of containerized apps across any cloud provider’s private or public Cloud. For instance, all major Cloud providers including AWS, Microsoft Azure, IBM Cloud enable easy integration with Kubernetes platform. 

App stability in the Cloud 

Kubernetes allow you to run your containerized apps with ease and update your software without downtime. Another great thing about Kubernetes is that it provides self-healing capabilities and will replace the container once it falls. 

Less chance of vendor lock-in

Containers contain only the features necessary for the application to work, which makes them smaller, more portable and faster. They are flexible on various types of infrastructure and can work with any type of container which allows you to grow without having to restructure your infrastructure. This is not the case with other orchestrators which can result in lock-in.

Managing and and scaling apps with Kubernetes 

The best way to manage your apps with Kubernetes is to take a unique, holistic approach. You need to make several critical decisions including:

  • Which tools and technologies you want to use
  • How will you integrate the selected tools 
  • What stakeholders you will include in the process (operators, developers, project managers)

To deliver success, here are the best practices you need to follow when managing Kubernetes:

Application monitoring 

To know when to scale, you need to keep monitoring your app. If the number of users keeps rising, and the app is slowly responding, it means it is time for you to scale. Also, make sure you keep your memory usage below 70%. If your application uses more memory than this, you will probably have to scale. 

Auto-scaling with Cloud providers

Majority of Cloud providers offer some sort of autoscaling functionality allowing you to automate your scaling process. These systems use various metrics that provide insights into the state of the app and help you determine when is the right time to start and stop new instances. 

User enablement 

Deployment powered by Kubernetes should meet developers’ needs — it provides them with the autonomy and enables them to perform tasks on their own and solve bugs more easily. However, once the app starts scaling, challenges may occur. This is where automated tools can help you implement certain policies across your organisation. Whatever strategy you choose, the most important thing is to keep the user experience at higher level allowing them to access data when they need it. 

Security 

Once the scale of the deployment starts increasing security becomes paramount. Threats can come from various angles, such as forgotten credentials or some private service that was made public by accident. One way to avoid this is to always lock your cluster down. Also, performing regular audits enables you to identify vulnerabilities on time. Automated tools can bring additional value here allowing you to detect emerging threats in real time and. Finally, providing training and increasing developers’ awareness can help mitigate risk of cybersecurity threats and increase defense. 

Consistent workloads 

Using standard tools and consistent workflows will help you identify challenges much more easily and quickly. Also, using standardized templates can help developers restore the cluster to the desired specification. Finally, to maintain consistency, you should make sure you perform the same processes each time you create a cluster and that they are documented so everyone could have an access to the documents and perform their tasks in the same way, consistently. 

Managing the complexity of Kubernetes with Deployflow 

Containerazation and Kubernetes enable powerful solutions when it comes to app development. DevOps experts with a deep knowledge of Kubernetes can help unlock new levels of scalability and drive agility and efficiency. By using expert resources and a variety of deployment options, you can have a successful Kubernetes journey. Deployflow experts are here by your side, ready to help you reach new heights and evolve at every step of your journey. 


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maya.budinski

Published on January 3, 2024