Each cluster also has a master (control plane) that manages the nodes and pods (more on pods below) of the cluster. A cluster is made up of nodes that run containerized applications. When you deploy Kubernetes, you are managing a cluster. Understanding their relationship in supporting container-delivered applications will help clarify the value of Kubernetes to enterprises. In this article, we’ll focus on the highest-level constructs of Kubernetes: clusters, nodes, and pods. How Kubernetes clusters, nodes, and pods work togetherĪs with many new technologies, Kubernetes comes with its own vocabulary. DevOps teams can focus on building container-delivered applications while Kubernetes manages a whole range of other tasks. Kubernetes simplifies the deployment and operation of containerized applications by introducing an abstraction layer on a group of hosts. Backed by major players such as Google, AWS, Microsoft, IBM, Cisco, and Intel, Kubernetes is the flagship project of the Cloud Native Computing Foundation and is now the de facto standard for container orchestration. Originally developed by Google as the Borg project, Kubernetes is an open-source container orchestration platform that automates the deployment, management, and scaling of containerized applications. Enter Kubernetes (sometimes short-handed as “K8s”-there are eight letters between the “K” and the “s” of “Kubernetes”). For this reason, a new approach to container management and orchestration is required. Containers are ephemeral and blur the once-solid lines between application and infrastructure. What is Kubernetes?įor all their benefits, containers also introduce unprecedented complexity. Containers essentially eradicate the “works on my machine” problem inherent with monolithic applications. This gives DevOps teams peace of mind knowing that the application they’re building and supporting will run properly in any environment-whether a virtual machine, bare metal, or the cloud.
Containers enable developers to package up an application with all of its required parts and ship it out as one standard, lightweight, secure package.
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