diff --git a/content/zh-cn/docs/tasks/administer-cluster/dns-custom-nameservers.md b/content/zh-cn/docs/tasks/administer-cluster/dns-custom-nameservers.md
index 883324ab11..22930e0a24 100644
--- a/content/zh-cn/docs/tasks/administer-cluster/dns-custom-nameservers.md
+++ b/content/zh-cn/docs/tasks/administer-cluster/dns-custom-nameservers.md
@@ -18,55 +18,50 @@ This page explains how to configure your DNS
 {{< glossary_tooltip text="Pod(s)" term_id="pod" >}} and customize the
 DNS resolution process in your cluster.
 -->
-本页说明如何配置 DNS {{< glossary_tooltip text="Pod(s)" term_id="pod" >}}，以及定制集群中 DNS 解析过程。
+本页说明如何配置 DNS {{< glossary_tooltip text="Pod" term_id="pod" >}}，以及定制集群中 DNS 解析过程。
 
 ## {{% heading "prerequisites" %}}
 
-{{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
+{{< include "task-tutorial-prereqs.md" >}}
 
 <!-- 
 Your cluster must be running the CoreDNS add-on.
-[Migrating to CoreDNS](/docs/tasks/administer-cluster/coredns/#migrating-to-coredns)
-explains how to use `kubeadm` to migrate from `kube-dns`.
 -->
 你的集群必须运行 CoreDNS 插件。
-文档[迁移到 CoreDNS](/zh-cn/docs/tasks/administer-cluster/coredns/#migrating-to-coredns)
-解释了如何使用 `kubeadm` 从 `kube-dns` 迁移到 CoreDNS。
+
+{{% version-check %}}
 
 <!-- steps -->
 
 <!-- 
-## Introduction 
+## Introduction
 
 DNS is a built-in Kubernetes service launched automatically
-using the addon manager
-[cluster add-on](http://releases.k8s.io/master/cluster/addons/README.md). 
+using the _addon manager_ [cluster add-on](http://releases.k8s.io/master/cluster/addons/README.md).
 -->
-## 介绍
+## 介绍   {#introduction}
 
-DNS 是使用[集群插件](http://releases.k8s.io/master/cluster/addons/README.md)
-管理器自动启动的内置的 Kubernetes 服务。
-
-<!-- 
-As of Kubernetes v1.12, CoreDNS is the recommended DNS Server, replacing kube-dns.  If your cluster
-originally used kube-dns, you may still have `kube-dns` deployed rather than CoreDNS.
--->
-从 Kubernetes v1.12 开始，CoreDNS 是推荐的 DNS 服务器，取代了 kube-dns。 如果
-你的集群原来使用 kube-dns，你可能部署的仍然是 `kube-dns` 而不是 CoreDNS。
+DNS 是使用 **插件管理器**
+[集群插件](http://releases.k8s.io/master/cluster/addons/README.md)自动启动的 Kubernetes 内置服务。
 
+{{< note >}}
 <!--
 The CoreDNS Service is named `kube-dns` in the `metadata.name` field.  
-This is so that there is greater interoperability with workloads that relied on the legacy `kube-dns` Service name to resolve addresses internal to the cluster. Using a Service named `kube-dns` abstracts away the implementation detail of which DNS provider is running behind that common name.
+The intent is to ensure greater interoperability with workloads that relied on
+the legacy `kube-dns` Service name to resolve addresses internal to the cluster.
+Using a Service named `kube-dns` abstracts away the implementation detail of
+which DNS provider is running behind that common name.
 -->
-{{< note >}}
 CoreDNS 服务在其 `metadata.name` 字段被命名为 `kube-dns`。
 这是为了能够与依靠传统 `kube-dns` 服务名称来解析集群内部地址的工作负载具有更好的互操作性。
 使用 `kube-dns` 作为服务名称可以抽离共有名称之后运行的是哪个 DNS 提供程序这一实现细节。
 {{< /note >}}
 
 <!--
-If you are running CoreDNS as a Deployment, it will typically be exposed as a Kubernetes Service with a static IP address.
-The kubelet passes DNS resolver information to each container with the `-cluster-dns=<dns-service-ip>` flag.
+If you are running CoreDNS as a Deployment, it will typically be exposed as
+a Kubernetes Service with a static IP address.
+The kubelet passes DNS resolver information to each container with the
+`--cluster-dns=<dns-service-ip>` flag.
 -->
 如果你在使用 Deployment 运行 CoreDNS，则该 Deployment 通常会向外暴露为一个具有
 静态 IP 地址 Kubernetes 服务。
@@ -74,43 +69,44 @@ kubelet 使用 `--cluster-dns=<DNS 服务 IP>` 标志将 DNS 解析器的信息
 
 <!-- 
 DNS names also need domains. You configure the local domain in the kubelet
-with the flag `-cluster-domain=<default-local-domain>`. 
+with the flag `--cluster-domain=<default-local-domain>`.
 -->
-DNS 名称也需要域名。 你可在 kubelet 中使用 `--cluster-domain=<默认本地域名>`
+DNS 名称也需要域名。你可在 kubelet 中使用 `--cluster-domain=<默认本地域名>`
 标志配置本地域名。
 
 <!-- 
-The DNS server supports forward lookups (A and AAAA records), port lookups (SRV records), reverse IP address lookups (PTR records),
-and more. For more information, see [DNS for Services and Pods](/docs/concepts/services-networking/dns-pod-service/).
+The DNS server supports forward lookups (A and AAAA records), port lookups (SRV records),
+reverse IP address lookups (PTR records), and more. For more information, see
+[DNS for Services and Pods](/docs/concepts/services-networking/dns-pod-service/).
 -->
 DNS 服务器支持正向查找（A 和 AAAA 记录）、端口发现（SRV 记录）、反向 IP 地址发现（PTR 记录）等。
-更多信息，请参见[Pod 和 服务的 DNS](/zh-cn/docs/concepts/services-networking/dns-pod-service/)。
+更多信息，请参见 [Service 与 Pod 的 DNS](/zh-cn/docs/concepts/services-networking/dns-pod-service/)。
 
 <!-- 
-If a Pod's `dnsPolicy` is set to "`default`", it inherits the name resolution
+If a Pod's `dnsPolicy` is set to `default`, it inherits the name resolution
 configuration from the node that the Pod runs on. The Pod's DNS resolution
 should behave the same as the node.
-But see [Known issues](/docs/tasks/administer-cluster/dns-debugging-resolution/#known-issues). 
+But see [Known issues](/docs/tasks/administer-cluster/dns-debugging-resolution/#known-issues).
 -->
-如果 Pod 的 `dnsPolicy` 设置为 "`default`"，则它将从 Pod 运行所在节点继承名称解析配置。
+如果 Pod 的 `dnsPolicy` 设置为 `default`，则它将从 Pod 运行所在节点继承名称解析配置。
 Pod 的 DNS 解析行为应该与节点相同。
 但请参阅[已知问题](/zh-cn/docs/tasks/administer-cluster/dns-debugging-resolution/#known-issues)。
 
 <!-- 
 If you don't want this, or if you want a different DNS config for pods, you can
-use the kubelet's `-resolv-conf` flag.  Set this flag to "" to prevent Pods from
+use the kubelet's `--resolv-conf` flag.  Set this flag to "" to prevent Pods from
 inheriting DNS. Set it to a valid file path to specify a file other than
-`/etc/resolv.conf` for DNS inheritance. 
+`/etc/resolv.conf` for DNS inheritance.
 -->
-如果你不想这样做，或者想要为 Pod 使用其他 DNS 配置，则可以
-使用 kubelet 的 `--resolv-conf` 标志。 将此标志设置为 "" 可以避免 Pod 继承 DNS。
+如果你不想这样做，或者想要为 Pod 使用其他 DNS 配置，则可以使用 kubelet 的
+`--resolv-conf` 标志。将此标志设置为 "" 可以避免 Pod 继承 DNS。
 将其设置为有别于 `/etc/resolv.conf` 的有效文件路径可以设定 DNS 继承不同的配置。
 
 ## CoreDNS
 
 <!-- 
-CoreDNS is a general-purpose authoritative DNS server that can serve as cluster DNS, complying with the [dns specifications]
-(https://github.com/kubernetes/dns/blob/master/docs/specification.md). 
+CoreDNS is a general-purpose authoritative DNS server that can serve as cluster DNS,
+complying with the [DNS specifications](https://github.com/kubernetes/dns/blob/master/docs/specification.md).
 -->
 CoreDNS 是通用的权威 DNS 服务器，可以用作集群 DNS，符合
 [DNS 规范](https://github.com/kubernetes/dns/blob/master/docs/specification.md)。
@@ -118,20 +114,24 @@ CoreDNS 是通用的权威 DNS 服务器，可以用作集群 DNS，符合
 <!-- 
 ### CoreDNS ConfigMap options 
 
-CoreDNS is a DNS server that is modular and pluggable, and each plugin adds new functionality to CoreDNS. 
-This can be configured by maintaining a [Corefile](https://coredns.io/2017/07/23/corefile-explained/), which is the CoreDNS
-configuration file. A cluster administrator can modify the ConfigMap for the CoreDNS Corefile to change how service discovery works.  
+CoreDNS is a DNS server that is modular and pluggable, with plugins adding new functionalities.
+The CoreDNS server can be configured by maintaining a [Corefile](https://coredns.io/2017/07/23/corefile-explained/),
+which is the CoreDNS configuration file. As a cluster administrator, you can modify the
+{{< glossary_tooltip text="ConfigMap" term_id="configmap" >}} for the CoreDNS Corefile to
+change how DNS service discovery behaves for that cluster.
 -->
 ### CoreDNS ConfigMap 选项  {#coredns-configmap-options}
 
 CoreDNS 是模块化且可插拔的 DNS 服务器，每个插件都为 CoreDNS 添加了新功能。
 可以通过维护 [Corefile](https://coredns.io/2017/07/23/corefile-explained/)，即 CoreDNS 配置文件，
-来定制其行为。 集群管理员可以修改 CoreDNS Corefile 的 ConfigMap，以更改服务发现的工作方式。
+来配置 CoreDNS 服务器。作为一个集群管理员，你可以修改 CoreDNS Corefile 的
+{{< glossary_tooltip text="ConfigMap" term_id="configmap" >}}，
+以更改 DNS 服务发现针对该集群的工作方式。
 
 <!-- 
-In Kubernetes, CoreDNS is installed with the following default Corefile configuration. 
+In Kubernetes, CoreDNS is installed with the following default Corefile configuration:
 -->
-在 Kubernetes 中，CoreDNS 安装时使用如下默认 Corefile 配置。
+在 Kubernetes 中，CoreDNS 安装时使用如下默认 Corefile 配置：
 
 ```yaml
 apiVersion: v1
@@ -148,9 +148,9 @@ data:
         }
         ready
         kubernetes cluster.local in-addr.arpa ip6.arpa {
-           pods insecure
-           fallthrough in-addr.arpa ip6.arpa
-           ttl 30
+            pods insecure
+            fallthrough in-addr.arpa ip6.arpa
+            ttl 30
         }
         prometheus :9153
         forward . /etc/resolv.conf
@@ -159,100 +159,122 @@ data:
         reload
         loadbalance
     }
-``` 
+```
 
 <!-- 
-The Corefile configuration includes the following [plugins](https://coredns.io/plugins/) of CoreDNS: 
+The Corefile configuration includes the following [plugins](https://coredns.io/plugins/) of CoreDNS:
 -->
 Corefile 配置包括以下 CoreDNS [插件](https://coredns.io/plugins/)：
 
 <!-- 
 * [errors](https://coredns.io/plugins/errors/): Errors are logged to stdout.
-* [health](https://coredns.io/plugins/health/): Health of CoreDNS is reported to http://localhost:8080/health.
-* [kubernetes](https://coredns.io/plugins/kubernetes/): CoreDNS will reply to DNS queries based on IP of the services and pods of Kubernetes. You can find more details [here](https://coredns.io/plugins/kubernetes/).  
+* [health](https://coredns.io/plugins/health/): Health of CoreDNS is reported to
+  `http://localhost:8080/health`. In this extended syntax `lameduck` will make theuprocess
+  unhealthy then wait for 5 seconds before the process is shut down.
+* [ready](https://coredns.io/plugins/ready/): An HTTP endpoint on port 8181 will return 200 OK,
+  when all plugins that are able to signal readiness have done so.
+* [kubernetes](https://coredns.io/plugins/kubernetes/): CoreDNS will reply to DNS queries
+  based on IP of the Services and Pods. You can find [more details](https://coredns.io/plugins/kubernetes/)
+  about this plugin on the CoreDNS website.
+  - `ttl` allows you to set a custom TTL for responses. The default is 5 seconds.
+    The minimum TTL allowed is 0 seconds, and the maximum is capped at 3600 seconds.
+    Setting TTL to 0 will prevent records from being cached.  
 -->
 * [errors](https://coredns.io/plugins/errors/)：错误记录到标准输出。
-* [health](https://coredns.io/plugins/health/)：在 http://localhost:8080/health 处提供 CoreDNS 的健康报告。
-* [ready](https://coredns.io/plugins/ready/)：在端口 8181 上提供的一个 HTTP 末端，当所有能够
-  表达自身就绪的插件都已就绪时，在此末端返回 200 OK。
-* [kubernetes](https://coredns.io/plugins/kubernetes/)：CoreDNS 将基于 Kubernetes 的服务和 Pod 的
-  IP 答复 DNS 查询。你可以在 CoreDNS 网站阅读[更多细节](https://coredns.io/plugins/kubernetes/)。
-  你可以使用 `ttl` 来定制响应的 TTL。默认值是 5 秒钟。TTL 的最小值可以是 0 秒钟，
-  最大值为 3600 秒。将 TTL 设置为 0 可以禁止对 DNS 记录进行缓存。
+* [health](https://coredns.io/plugins/health/)：在 `http://localhost:8080/health` 处提供 CoreDNS 的健康报告。
+  在这个扩展语法中，`lameduck` 会使此进程不健康，等待 5 秒后进程被关闭。
+* [ready](https://coredns.io/plugins/ready/)：在端口 8181 上提供的一个 HTTP 端点，
+  当所有能够表达自身就绪的插件都已就绪时，在此端点返回 200 OK。
+* [kubernetes](https://coredns.io/plugins/kubernetes/)：CoreDNS 将基于服务和 Pod 的 IP 来应答 DNS 查询。
+  你可以在 CoreDNS 网站找到有关此插件的[更多细节](https://coredns.io/plugins/kubernetes/)。
+
+  - 你可以使用 `ttl` 来定制响应的 TTL。默认值是 5 秒钟。TTL 的最小值可以是 0 秒钟，
+    最大值为 3600 秒。将 TTL 设置为 0 可以禁止对 DNS 记录进行缓存。
 
   <!-- 
-  The `pods insecure` option is provided for backward compatibility with kube-dns. You can use the
-  `pods verified` option, which returns an A record only if there exists a pod in same namespace
-  with matching IP. The `pods disabled` option can be used if you don't use pod records. 
+  - The `pods insecure` option is provided for backward compatibility with `kube-dns`.
+  - You can use the `pods verified` option, which returns an A record only if there exists a pod
+    in the same namespace with a matching IP.
+  - The `pods disabled` option can be used if you don't use pod records.
   -->
-  `pods insecure` 选项是为了与 kube-dns 向后兼容。你可以使用 `pods verified` 选项，该选项使得
-  仅在相同名称空间中存在具有匹配 IP 的 Pod 时才返回 A 记录。如果你不使用 Pod 记录，则可以使用
-  `pods disabled` 选项。
+
+  - `pods insecure` 选项是为了与 kube-dns 向后兼容。
+  - 你可以使用 `pods verified` 选项，该选项使得仅在相同名字空间中存在具有匹配 IP 的 Pod 时才返回 A 记录。
+  - 如果你不使用 Pod 记录，则可以使用 `pods disabled` 选项。
 
 <!-- 
-* [prometheus](https://coredns.io/plugins/prometheus/): Metrics of CoreDNS are available at http://localhost:9153/metrics in [Prometheus](https://prometheus.io/) format.
-* [forward](https://coredns.io/plugins/forward/): Any queries that are not within the cluster domain of Kubernetes will be forwarded to predefined resolvers (/etc/resolv.conf).
+* [prometheus](https://coredns.io/plugins/metrics/): Metrics of CoreDNS are available at
+  `http://localhost:9153/metrics` in the [Prometheus](https://prometheus.io/) format
+  (also known as OpenMetrics).
+* [forward](https://coredns.io/plugins/forward/): Any queries that are not within the Kubernetes
+  cluster domain are forwarded to predefined resolvers (/etc/resolv.conf).
 * [cache](https://coredns.io/plugins/cache/): This enables a frontend cache.
-* [loop](https://coredns.io/plugins/loop/): Detects simple forwarding loops and halts the CoreDNS process if a loop is found.
-* [reload](https://coredns.io/plugins/reload): Allows automatic reload of a changed Corefile. After you edit the ConfigMap configuration, allow two minutes for your changes to take effect.
-* [loadbalance](https://coredns.io/plugins/loadbalance): This is a round-robin DNS loadbalancer that randomizes the order of A, AAAA, and MX records in the answer. 
+* [loop](https://coredns.io/plugins/loop/): Detects simple forwarding loops and
+  halts the CoreDNS process if a loop is found.
+* [reload](https://coredns.io/plugins/reload): Allows automatic reload of a changed Corefile.
+  After you edit the ConfigMap configuration, allow two minutes for your changes to take effect.
+* [loadbalance](https://coredns.io/plugins/loadbalance): This is a round-robin DNS loadbalancer
+  that randomizes the order of A, AAAA, and MX records in the answer.
 -->
 * [prometheus](https://coredns.io/plugins/prometheus/)：CoreDNS 的度量指标值以
-  [Prometheus](https://prometheus.io/) 格式在 http://localhost:9153/metrics 上提供。
-* [forward](https://coredns.io/plugins/forward/): 不在 Kubernetes 集群域内的任何查询都将转发到
-  预定义的解析器 (/etc/resolv.conf).
+  [Prometheus](https://prometheus.io/) 格式（也称为 OpenMetrics）在 `http://localhost:9153/metrics` 上提供。
+* [forward](https://coredns.io/plugins/forward/): 不在 Kubernetes 集群域内的任何查询都将转发到预定义的解析器 (/etc/resolv.conf)。
 * [cache](https://coredns.io/plugins/cache/)：启用前端缓存。
-* [loop](https://coredns.io/plugins/loop/)：检测到简单的转发环，如果发现死循环，则中止 CoreDNS 进程。
+* [loop](https://coredns.io/plugins/loop/)：检测简单的转发环，如果发现死循环，则中止 CoreDNS 进程。
 * [reload](https://coredns.io/plugins/reload)：允许自动重新加载已更改的 Corefile。
   编辑 ConfigMap 配置后，请等待两分钟，以使更改生效。
 * [loadbalance](https://coredns.io/plugins/loadbalance)：这是一个轮转式 DNS 负载均衡器，
   它在应答中随机分配 A、AAAA 和 MX 记录的顺序。
 
 <!-- 
-You can modify the default CoreDNS behavior by modifying the ConfigMap. 
+You can modify the default CoreDNS behavior by modifying the ConfigMap.
 -->
 你可以通过修改 ConfigMap 来更改默认的 CoreDNS 行为。
 
 <!-- 
-### Configuration of Stub-domain and upstream nameserver using CoreDNS 
+### Configuration of Stub-domain and upstream nameserver using CoreDNS
 
-CoreDNS has the ability to configure stubdomains and upstream nameservers using the [forward plugin](https://coredns.io/plugins/forward/).
+CoreDNS has the ability to configure stub-domains and upstream nameservers
+using the [forward plugin](https://coredns.io/plugins/forward/).
 -->
-### 使用 CoreDNS 配置存根域和上游域名服务器
+### 使用 CoreDNS 配置存根域和上游域名服务器   {#configuration-of-stub-domain-and-upstream-nameserver-using-coredns}
 
 CoreDNS 能够使用 [forward 插件](https://coredns.io/plugins/forward/)配置存根域和上游域名服务器。
 
 <!-- 
 #### Example
 
-If a cluster operator has a [Consul](https://www.consul.io/) domain server located at 10.150.0.1, and all Consul names have the suffix .consul.local. To configure it in CoreDNS, the cluster administrator creates the following stanza in the CoreDNS ConfigMap. 
+If a cluster operator has a [Consul](https://www.consul.io/) domain server located at "10.150.0.1",
+and all Consul names have the suffix ".consul.local". To configure it in CoreDNS,
+the cluster administrator creates the following stanza in the CoreDNS ConfigMap.
 -->
 #### 示例
 
-如果集群操作员在 10.150.0.1 处运行了 [Consul](https://www.consul.io/) 域服务器，
+如果集群操作员在 "10.150.0.1" 处运行了 [Consul](https://www.consul.io/) 域服务器，
 且所有 Consul 名称都带有后缀 `.consul.local`。要在 CoreDNS 中对其进行配置，
 集群管理员可以在 CoreDNS 的 ConfigMap 中创建加入以下字段。
 
 ```
 consul.local:53 {
-        errors
-        cache 30
-        forward . 10.150.0.1
-    }
+    errors
+    cache 30
+    forward . 10.150.0.1
+}
 ```
 
 <!-- 
-To explicitly force all non-cluster DNS lookups to go through a specific nameserver at 172.16.0.1, point the  `forward` to the nameserver instead of `/etc/resolv.conf` 
+To explicitly force all non-cluster DNS lookups to go through a specific nameserver at 172.16.0.1,
+point the `forward` to the nameserver instead of `/etc/resolv.conf` 
 -->
 要显式强制所有非集群 DNS 查找通过特定的域名服务器（位于 172.16.0.1），可将 `forward`
 指向该域名服务器，而不是 `/etc/resolv.conf`。
 
 ```
 forward .  172.16.0.1
-``` 
+```
 
 <!-- 
-The final ConfigMap along with the default `Corefile` configuration looks like: 
+The final ConfigMap along with the default `Corefile` configuration looks like:
 -->
 最终的包含默认的 `Corefile` 配置的 ConfigMap 如下所示：
 
@@ -285,119 +307,19 @@ data:
     }
 ```
 
-<!-- 
-The `kubeadm` supports automatic translation of the CoreDNS ConfigMap from the kube-dns ConfigMap.
--->
-工具 `kubeadm` 支持将 kube-dns ConfigMap 自动转换为 CoreDNS ConfigMap。
-
-<!--
-While kube-dns accepts an FQDN for stubdomain and nameserver (eg: ns.foo.com), CoreDNS does not support this feature. 
-During translation, all FQDN nameservers will be omitted from the CoreDNS config.*** 
--->
 {{< note >}}
-尽管 kube-dns 接受 FQDN（例如：ns.foo.com）作为存根域和名字服务器，CoreDNS 不支持此功能。
+<!--
+CoreDNS does not support FQDNs for stub-domains and nameservers (eg: "ns.foo.com").
+During translation, all FQDN nameservers will be omitted from the CoreDNS config.
+-->
+CoreDNS 不支持 FQDN 作为存根域和域名服务器（例如 "ns.foo.com"）。
 转换期间，CoreDNS 配置中将忽略所有的 FQDN 域名服务器。
 {{< /note >}}
 
-<!-- 
-## CoreDNS configuration equivalent to kube-dns
-
-CoreDNS supports the features of kube-dns and more.
-A ConfigMap created for kube-dns to support `StubDomains`and `upstreamNameservers` translates to the `proxy` plugin in CoreDNS.
-
-### Example
-
-This example ConfigMap for kube-dns specifies stubdomains and upstreamnameservers: 
--->
-## CoreDNS 配置等同于 kube-dns
-
-CoreDNS 不仅仅提供 kube-dns 的功能。
-为 kube-dns 创建的 ConfigMap 支持 `StubDomains` 和 `upstreamNameservers` 转换为 CoreDNS 中的 `forward` 插件。
-
-### 示例
-
-用于 kubedns 的此示例 ConfigMap 描述了 stubdomains 和 upstreamnameservers：
-
-```yaml
-apiVersion: v1
-data:
-  stubDomains: |
-    {"abc.com" : ["1.2.3.4"], "my.cluster.local" : ["2.3.4.5"]}
-  upstreamNameservers: |
-    ["8.8.8.8", "8.8.4.4"]
-kind: ConfigMap
-```
-
-<!-- 
-The equivalent configuration in CoreDNS creates a Corefile: 
--->
-CoreDNS 中的等效配置将创建一个 Corefile：
-
-* 针对 stubDomains:
-
-  ```yaml
-  abc.com:53 {
-       errors
-       cache 30
-       proxy . 1.2.3.4
-   }
-   my.cluster.local:53 {
-       errors
-       cache 30
-       proxy . 2.3.4.5
-   }
-   ```
-
-<!-- 
-The complete Corefile with the default plugins: 
--->
-带有默认插件的完整 Corefile：
-
-```
-.:53 {
-    errors
-    health
-    kubernetes cluster.local in-addr.arpa ip6.arpa {
-       pods insecure
-       fallthrough in-addr.arpa ip6.arpa
-    }
-    federation cluster.local {
-       foo foo.feddomain.com
-    }
-    prometheus :9153
-    forward .  8.8.8.8 8.8.4.4
-    cache 30
-}
-abc.com:53 {
-    errors
-    cache 30
-    forward . 1.2.3.4
-}
-my.cluster.local:53 {
-    errors
-    cache 30
-    forward . 2.3.4.5
-}
-```
-
-<!-- 
-## Migration to CoreDNS
-
-To migrate from kube-dns to CoreDNS, [a detailed blog](https://coredns.io/2018/05/21/migration-from-kube-dns-to-coredns/) is available to help users adapt CoreDNS in place of kube-dns.
-A cluster administrator can also migrate using [the deploy script](https://github.com/coredns/deployment/blob/master/kubernetes/deploy.sh).
-
--->
-## 迁移到 CoreDNS
-
-要从 kube-dns 迁移到 CoreDNS，[此博客](https://coredns.io/2018/05/21/migration-from-kube-dns-to-coredns/)
-提供了帮助用户将 kube-dns 替换为 CoreDNS。
-集群管理员还可以使用[部署脚本](https://github.com/coredns/deployment/blob/master/kubernetes/deploy.sh)
-进行迁移。
-
 ## {{% heading "whatsnext" %}}
 
 <!--
-- Read [Debugging DNS Resolution](/docs/tasks/administer-cluster/dns-debugging-resolution/).
+- Read [Debugging DNS Resolution](/docs/tasks/administer-cluster/dns-debugging-resolution/)
 -->
 - 阅读[调试 DNS 解析](/zh-cn/docs/tasks/administer-cluster/dns-debugging-resolution/)