Refractor _index.md (#14163)

content/en/docs/reference/glossary/applications.md

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+---
+title: Applications
+id: appplications
+date: 2019-05-12
+full_link:
+short_description: >
+  The layer where various containerized applications run.
+
+aka:
+tags:
+- fundamental
+---
+ The layer where various containerized applications run.

content/en/docs/reference/glossary/cluster-infrastructure.md

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+---
+title: Cluster Infrastructure
+id: cluster-infrastructure
+date: 2019-05-12
+full_link:
+short_description: >
+ The infrastructure layer provides and maintains VMs, networking, security groups and others.
+
+aka:
+tags:
+- operations
+---
+The infrastructure layer provides and maintains VMs, networking, security groups and others.

content/en/docs/reference/glossary/cluster-operations.md

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+---
+title: Cluster Operations
+id: cluster-operations
+date: 2019-05-12
+full_link:
+short_description: >
+ Activities such as upgrading the clusters, implementing security, storage, ingress, networking, logging and monitoring, and other operations involved in managing a Kubernetes cluster.
+
+aka:
+tags:
+- operations
+---
+ Activities such as upgrading the clusters, implementing security, storage, ingress, networking, logging and monitoring, and other operations involved in managing a Kubernetes cluster.

content/en/docs/reference/glossary/control-plane.md

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+---
+title: Control Plane
+id: control-plane
+date: 2019-05-12
+full_link:
+short_description: >
+  The container orchestration layer that exposes the API and interfaces to define, deploy, and manage the lifecycle of containers.
+
+aka:
+tags:
+- fundamental
+---
+ The container orchestration layer that exposes the API and interfaces to define, deploy, and manage the lifecycle of containers.

content/en/docs/reference/glossary/data-plane.md

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+---
+title: Data Plane
+id: data-plane
+date: 2019-05-12
+full_link:
+short_description: >
+  The layer that provides capacity such as CPU, memory, network, and storage so that the containers can run and connect to a network.
+
+aka:
+tags:
+- fundamental
+---
+ The layer that provides capacity such as CPU, memory, network, and storage so that the containers can run and connect to a network.