If you are a keen follower of the trending technology news, you will realize that Kubernetes is almost everywhere. The thing is, the popularity of Kubernetes is ever increasing. In fact, most developers and DevOps teams feel that their development projects aren’t up to date if they are not using Kubernetes.
So, what is Kubernetes?
This is a planning tool for containerized apps, and it can be used to control traffic management and resource allocation for micro-services and cloud applications. Therefore, Kubernetes simplifies different aspects of managing service-oriented application frameworks. Together with continuous deployment (CD) and continuous integration (CI) tools, Kubernetes provides the foundation for scaling applications with lots of engineering effort.
When should you use Kubernetes?
If you want to optimize your IT costs
If your business is operating at a massive scale, using Kubernetes can help in drastically reducing your infrastructure costs. With Kubernetes, container-based architecture becomes practical, by bringing together applications optimally using your hardware and cloud investments.
Without Kubernetes, it’s very easy to over-provision your infrastructure to conventionally manage unanticipated spikes, or you had a challenge scale containerized applications manually. However, Kubernetes logically schedules and closely packs containers while putting into consideration the existing resources.
Also, you can use Kubernetes to automatically scale your applications to meet your business needs, and this can help you to free up your staff to handle other productive activities.
When migrating to the cloud
You can use Kubernetes if you want to have a seamless migration to the cloud, and perform various tasks like:
- Re-hosting – lifting and shifting an app
- Re-platforming – making a few changes to how the app runs
- Re-factoring – modify the entire application, as well as the services that support it to better suit the containerized environment.
Because Kubernetes runs consistently in all environments, both cloud, and on-premise, K8s provides a better, more seamless, and prescriptive path to migrate your applications from on-premise to your preferred cloud environment.
And, instead of dealing with all complexities and variations of the cloud environment, you can follow a more set path when:
- Migrating applications to Kubernetes on-premise – here, you focus more on re-platforming your applications to containers and packaging them under the Kubernetes tool.
- Moving to cloud-based Kubernetes instance – here, you have numerous options—running Kubernetes natively, or choosing a managed Kubernetes environment from different vendors.
- Now, once you migrate your application to the cloud, you can begin optimizing your app to the cloud environment, together with its services.
When looking to simplify DevOps and performance
When talking about Kubernetes, we shouldn’t ignore the deployment part. Today, no app can go live without a proper DevOps solution. However, you can use DevOps when you want to simplify everything. K8s is easy to manage, and it simplifies almost the entire process.
With this, you can easily reduce the friction between the operations and development teams, and make clear the separation of responsibility transparently.
With Kubernetes, you will also:
- Perform horizontal scaling – K8s can also scale automatically when you add physical resources
- Perform intelligent updates – changing a container will intelligently replace the older one. However, the pod will remain active until it finished serving all the pending requests.
- Eliminate the development caveat – you can deploy all containerizable apps with a single click, and this means you don’t have to learn new things.
For management of applications
Now, the conventional domineering way of managing software apps can be tricky, as it involved numerous steps. However, the Kubernetes platform has solved this challenge by allowing developers to individually manage apps, clusters, and containers, among other objects using JSON or YAML to declare the target state of the object.
Besides, K8s ensures that every object matches the desired state, continuously, but not at an individual point. Moreover, apart from ensuring predictability and consistency, the declarative model of Kubernetes makes it easier to automate both rollouts and rollbacks. And, because the target states can be defined with files that both humans and machines can understand, it becomes easier for admins to document the states of their desired systems.
Kubernetes is very powerful. However, that doesn’t mean it’s the best option for every app development project. Just like with any other piece of technology, K8s is designed to do a specific set of tasks. Therefore, if you are not having any challenges that Kubernetes can solve, it’s not worth the trouble to use K8s. The thing is, Kubernetes shouldn’t always get a space in your toolbox—especially when embarking on a new project. You should first use the available tools to create your app. Now, when it gets to the deployment and scaling stage, you will start thinking about orchestration, and this is where Kubernetes comes in as an orchestration tool.