5 Things You Must Know Before Adopting K8s

adopting K8S

Yunqi Information : [Click to view more industry information] Here you can find first-hand cloud information in different industries. What are you waiting for, come! About the author Christopher Tozzi has reported on Linux, virtualization, containers, data storage, and related topics as a freelancer since 2008.
Yunqi Information : [ Click to view more industry information ]
Here you can find first-hand cloud information in different industries. What are you waiting for, come!

About the author | Christopher Tozzi has been covering Linux, virtualization, containers, data storage, and related topics as a freelancer since 2008.
Today, Kubernetes has become a popular container orchestration and scheduling tool, and many IT analysts have made in-depth recommendations on when enterprises should adopt Kubernetes. However, like all other software platforms, Kubernetes is not a one-size-fits-all panacea. I'm more inclined to think that people sometimes exaggerate the role of Kubernetes so much that they have the illusion that they can't leave Kubernetes, when in reality, Kubernetes is more complex than they really need.

To analyze how well people's real needs match up with Kubernetes, I analyzed 5 things enterprises must consider before adopting Kubernetes orchestration.
What is Kubernetes?
If you follow containers, you probably know that Kubernetes is an open source tool for container orchestration that automates important tasks such as starting containers, stopping them, and load balancing between different instances of the same container.
In short, the main purpose of Kubernetes is to minimize the amount of administrative work that engineers have to perform manually, and to help enterprises run complex containerized applications at scale by simplifying container operations.
Key elements in deciding whether to adopt Kubernetes
Based on the original intention of Kubernetes, if you like automation and hate manual repetitive tasks, then Kubernetes is undoubtedly an excellent choice for you.
This is an important premise for your decision to adopt Kubernetes, however, you cannot decide whether to adopt Kubernetes based on this "premise" alone. There are other important factors you need to consider and weigh before adopting Kubernetes.

1. adopting K8S.Kubernetes infrastructure scale

The size of your infrastructure is one of the key factors in determining whether Kubernetes will work well for you.
Kubernetes is designed to orchestrate containers distributed across really large environments, which often means enterprises should have dozens of host servers. Based on past implementation experience, if you have fewer than 50 servers in your infrastructure, you may not have enough resources to take advantage of Kubernetes' full benefits.

This is not to say that Kubernetes cannot run on smaller scale infrastructure. In fact, you can run Kubernetes on a single host if you want. However, since one of Kubernetes' R&D goals is to provide high availability by distributing containerized applications across a large number of clusters, if you only have a small number of servers, you won't get some of the value of Kubernetes.
Beyond that, given the complexity of setting up and maintaining Kubernetes, if your infrastructure is small enough to fully deliver on Kubernetes' promise of high availability, then perhaps you shouldn't invest too much time and effort in Kubernetes.
For smaller infrastructures, you can use simpler container orchestration tools, or use cloud-based container services such as AWS ECS with built-in orchestration.

2.adopting K8S. Kubernetes operating system environment

Kubernetes is primarily a Linux technology. Although Kubernetes can be used to manage containerized applications hosted on Windows servers, these applications run as so-called worker nodes within a cluster of Kubernetes servers. But the main server or master node hosting the Kubernetes core services must be Linux.
So if your store is Windows-centric, Kubernetes is not your best option. But you can choose Rancher to easily bring the benefits of Kubernetes to Windows with minimal complexity to use.

3.adopting K8S. Install and set up Kubernetes

Before deciding to adopt Kubernetes, you also need to evaluate the amount of work you can put into this project.
The vanilla open source version of Kubernetes lacks built-in applications and doesn't provide an installation that works with all default configurations. You need to invest a lot of time writing and tuning configuration files from scratch before your cluster is up and running. Therefore, the process of installing and configuring Kubernetes can be a daunting process that requires a lot of time and effort.
Some Kubernetes distributions provide interactive installer scripts that can help you automate much of the setup process. If you choose a Kubernetes distribution like Rancher, you can expect to easily configure and install within a day or two.
cloud provider solution such as Google Kubernetes Engine . In this case, you can choose to install and set up by yourself. But it's worth noting that your options may be limited when it comes to determining how to configure your Kubernetes environment.
You must be aware of the most critical point: don't underestimate the difficulty of configuring Kubernetes. Before you really want to go all-in on Kubernetes, make sure your effort is worth it. On the other hand, if you are unsure of how difficult it is to install and deploy Kubernetes on a production cluster for your enterprise, you can try using a lightweight Kubernetes distribution such as K3s to test and estimate how much effort it will take to configure and deploy Kubernetes in the future. set up.

4. adopting K8S.Kubernetes and declarative configuration management

Kubernetes takes a so-called declarative approach to configuration management, which means that you write your own configuration files to set up how your Kubernetes application should behave, and Kubernetes will automatically figure out how to bring your application into compliance.
Declarative configuration management is the opposite of imperative configuration management, where you configure each component of your application yourself and make it behave the way you want.
one of the reasons why Kubernetes is so powerful and scalable across many user instances . You can set a configuration once and apply it as many times as you want.
But what should you do if your configuration needs are constantly changing, or between different parts of your workload or environment? In this case, declarative configuration management becomes a hindrance, and you will find yourself constantly tweaking configuration files that you previously thought were "set and forget".
Therefore, before you choose to adopt Kubernetes, you need to consider the configuration needs of your application. Kubernetes is a good option only if the configuration you need is relatively generic and static.

5. adopting K8S.Kubernetes and multicloud

One of the main features of some Kubernetes distributions such as Rancher is that a single Kubernetes deployment can orchestrate multiple clusters, whether the clusters are on different public or private clouds . This capability makes Kubernetes an excellent tool to help control the complexity of multi-cloud architectures.
Kubernetes on multiple clouds makes a lot of sense when deploying containerized applications across multiple clouds and Kubernetes setup and configuration work well.
In this factor, you need to keep in mind that when considering whether and when to adopt Kubernetes, you should consider your current multi-cloud strategy and multi-cloud expansion plans.
Epilogue
Kubernetes is a fantastic tool that can yield tremendous value when set up correctly. However, it didn't reach killer app status because it couldn't deliver value across all user instances. Before you get caught up in the hype and decide you can't leave Kubernetes, soberly assess your needs and see if Kubernetes can actually help you run your applications more efficiently and reliably.

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