zx-trans: add controller.md (#11197)

* zx-trans: add controller.md

zx-trans: add controller.md

* Update controller.md

content/zh/docs/reference/glossary/controller.md

@@ -0,0 +1,40 @@
+---
+title: 控制器
+id: controller
+date: 2018-04-12
+full_link: /docs/admin/kube-controller-manager/
+short_description: >
+  控制器通过 apiserver 监控集群的公共状态，并致力于将当前状态转变为期望的状态。
+
+aka: 
+tags:
+- architecture
+- fundamental
+---
+
+<!--
+---
+title: Controller
+id: controller
+date: 2018-04-12
+full_link: /docs/admin/kube-controller-manager/
+short_description: >
+  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.
+
+aka: 
+tags:
+- architecture
+- fundamental
+---
+-->
+
+ 控制器通过 {{< glossary_tooltip text="apiserver" term_id="kube-apiserver" >}} 监控集群的公共状态，并致力于将当前状态转变为期望的状态。
+
+<!--more--> 
+
+<!--
+Examples of controllers that ship with Kubernetes today are the replication controller, endpoints controller, namespace controller, and serviceaccounts controller.
+-->
+
+Kubernetes 当前提供的部分控制器例子包括：副本控制器（replication controller）、端点控制器（endpoints controller）、命名空间控制器（namespace controller）、服务账号控制器（serviceaccounts controller）。
+