What is Kubernetes?
Kubernetes is an open source orchestration system for Docker containers.
It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions. Using the concepts of "labels" and "pods", it groups the containers which make up an application into logical units for easy management and discovery.
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Said about Kubernetes as an alternative
EvenNode allows running applications in the cloud such as Kubernetes does. EvenNode however simplifies deployment, metrics, log collection, permissions, etc.