20 lines
737 B
Markdown
20 lines
737 B
Markdown
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---
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title: Controller
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id: controller
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date: 2018-04-12
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full_link: /docs/admin/kube-controller-manager/
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short_description: >
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A control loop that watches the shared state of the cluster through the apiserver and makes changes attempting to move the current state towards the desired state.
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aka:
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tags:
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- architecture
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- fundamental
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---
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A control loop that watches the shared state of the cluster through the {{< glossary_tooltip text="apiserver" term_id="kube-apiserver" >}} and makes changes attempting to move the current state towards the desired state.
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<!--more-->
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Examples of controllers that ship with Kubernetes today are the replication controller, endpoints controller, namespace controller, and serviceaccounts controller.
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