I8T.run
A useful interview habit is to structure every answer in 3 parts:
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Definition: What is it?
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Behavior: How does it work?
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Practical example: How would you verify or use it?
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Production-ready alternatives: What are the enterprise-grade production-ready alternatives?
For example,
ClusterIP is a virtual IP assigned to a Kubernetes Service. It provides internal access to the Service and forward traffics to its backend endpoints. I can inspect it using:
kubectl get svcWhat is Kubernetes (K8s)?
It is an orchestration tool. In many books, you see they say it is a container orchestration tool. However, since the introduction of K8s in 20xx; the community worked to enhance K8s capabilities. As of writing this piece, we can use K8s to manage Virtual Machines (VMs) as well as Containers. Thus, it is not only a Container orchestrator, but also, a VM orchestrator as well.
What does orchestration mean?
It means we can use a tool to manage the lifecycle of our application. Yet, the tool runs our application, it also checks for errors, or failures in out application and as of error in our application, it can bring up a new replacement to our application. ??Also, it automates the future deployment of our application.
