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Kubernetes 文档的这一部分包含教程。一个教程展示了如何完成一个比单个[任务](zh/docs/tasks/)更大的目标。 Kubernetes 文档的这一部分包含教程。一个教程展示了如何完成一个比单个[任务](/zh/docs/tasks/)更大的目标。
通常一个教程有几个部分,每个部分都有一系列步骤。在浏览每个教程之前, 通常一个教程有几个部分,每个部分都有一系列步骤。在浏览每个教程之前,
您可能希望将[标准化术语表](zh/docs/reference/glossary/)页面添加到书签,供以后参考。 您可能希望将[标准化术语表](/zh/docs/reference/glossary/)页面添加到书签,供以后参考。
<!-- <!--
This section of the Kubernetes documentation contains tutorials. This section of the Kubernetes documentation contains tutorials.
A tutorial shows how to accomplish a goal that is larger than a single A tutorial shows how to accomplish a goal that is larger than a single
[task](zh/docs/tasks/). Typically a tutorial has several sections, [task](/docs/tasks/). Typically a tutorial has several sections,
each of which has a sequence of steps. each of which has a sequence of steps.
Before walking through each tutorial, you may want to bookmark the Before walking through each tutorial, you may want to bookmark the
[Standardized Glossary](zh/docs/reference/glossary/) page for later references. [Standardized Glossary](/docs/reference/glossary/) page for later references.
--> -->
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@ -39,10 +39,10 @@ Before walking through each tutorial, you may want to bookmark the
## Basics ## Basics
--> -->
* [Kubernetes 基础知识](zh/docs/tutorials/Kubernetes-Basics/)是一个深入的交互式教程,帮助您理解 Kubernetes 系统,并尝试一些基本的 Kubernetes 特性。 * [Kubernetes 基础知识](/zh/docs/tutorials/Kubernetes-Basics/)是一个深入的交互式教程,帮助您理解 Kubernetes 系统,并尝试一些基本的 Kubernetes 特性。
<!-- <!--
* [Kubernetes Basics](zh/docs/tutorials/kubernetes-basics/) is an in-depth interactive tutorial that helps you understand the Kubernetes system and try out some basic Kubernetes features. * [Kubernetes Basics](/docs/tutorials/kubernetes-basics/) is an in-depth interactive tutorial that helps you understand the Kubernetes system and try out some basic Kubernetes features.
--> -->
* [使用 Kubernetes (Udacity) 的可伸缩微服务](https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615) * [使用 Kubernetes (Udacity) 的可伸缩微服务](https://www.udacity.com/course/scalable-microservices-with-kubernetes--ud615)
@ -57,10 +57,10 @@ Before walking through each tutorial, you may want to bookmark the
* [Introduction to Kubernetes (edX)](https://www.edx.org/course/introduction-kubernetes-linuxfoundationx-lfs158x#) * [Introduction to Kubernetes (edX)](https://www.edx.org/course/introduction-kubernetes-linuxfoundationx-lfs158x#)
--> -->
* [你好 Minikube](zh/docs/tutorials/hello-minikube/) * [你好 Minikube](/zh/docs/tutorials/hello-minikube/)
<!-- <!--
* [Hello Minikube](zh/docs/tutorials/hello-minikube/) * [Hello Minikube]/docs/tutorials/hello-minikube/)
--> -->
## 配置 ## 配置
@ -69,10 +69,10 @@ Before walking through each tutorial, you may want to bookmark the
## Configuration ## Configuration
--> -->
* [使用一个 ConfigMap 配置 Redis](zh/docs/tutorials/configuration/configure-redis-using-configmap/) * [使用一个 ConfigMap 配置 Redis](/zh/docs/tutorials/configuration/configure-redis-using-configmap/)
<!-- <!--
* [Configuring Redis Using a ConfigMap](zh/docs/tutorials/configuration/configure-redis-using-configmap/) * [Configuring Redis Using a ConfigMap](/docs/tutorials/configuration/configure-redis-using-configmap/)
--> -->
## 无状态应用程序 ## 无状态应用程序
@ -81,16 +81,16 @@ Before walking through each tutorial, you may want to bookmark the
## Stateless Applications ## Stateless Applications
--> -->
* [公开外部 IP 地址访问集群中的应用程序](zh/docs/tutorials/stateless-application/expose-external-ip-address/) * [公开外部 IP 地址访问集群中的应用程序](/zh/docs/tutorials/stateless-application/expose-external-ip-address/)
<!-- <!--
* [Exposing an External IP Address to Access an Application in a Cluster](zh/docs/tutorials/stateless-application/expose-external-ip-address/) * [Exposing an External IP Address to Access an Application in a Cluster](/docs/tutorials/stateless-application/expose-external-ip-address/)
--> -->
* [示例:使用 Redis 部署 PHP 留言板应用程序](zh/docs/tutorials/stateless-application/guestbook/) * [示例:使用 Redis 部署 PHP 留言板应用程序](/zh/docs/tutorials/stateless-application/guestbook/)
<!-- <!--
* [Example: Deploying PHP Guestbook application with Redis](zh/docs/tutorials/stateless-application/guestbook/) * [Example: Deploying PHP Guestbook application with Redis](/docs/tutorials/stateless-application/guestbook/)
--> -->
## 有状态应用程序 ## 有状态应用程序
@ -99,28 +99,28 @@ Before walking through each tutorial, you may want to bookmark the
## Stateful Applications ## Stateful Applications
--> -->
* [StatefulSet 基础](zh/docs/tutorials/stateful-application/basic-stateful-set/) * [StatefulSet 基础](/zh/docs/tutorials/stateful-application/basic-stateful-set/)
<!-- <!--
* [StatefulSet Basics](zh/docs/tutorials/stateful-application/basic-stateful-set/) * [StatefulSet Basics](/docs/tutorials/stateful-application/basic-stateful-set/)
--> -->
* [示例WordPress 和 MySQL 使用持久卷](zh/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/) * [示例WordPress 和 MySQL 使用持久卷](/zh/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/)
<!-- <!--
* [Example: WordPress and MySQL with Persistent Volumes](zh/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/) * [Example: WordPress and MySQL with Persistent Volumes](/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/)
--> -->
* [示例:使用有状态集部署 Cassandra](zh/docs/tutorials/stateful-application/cassandra/) * [示例:使用有状态集部署 Cassandra](/zh/docs/tutorials/stateful-application/cassandra/)
<!-- <!--
* [Example: Deploying Cassandra with Stateful Sets](zh/docs/tutorials/stateful-application/cassandra/) * [Example: Deploying Cassandra with Stateful Sets](/docs/tutorials/stateful-application/cassandra/)
--> -->
* [运行 ZooKeeperCP 分布式系统](zh/docs/tutorials/stateful-application/zookeeper/) * [运行 ZooKeeperCP 分布式系统](/zh/docs/tutorials/stateful-application/zookeeper/)
<!-- <!--
* [Running ZooKeeper, A CP Distributed System](zh/docs/tutorials/stateful-application/zookeeper/) * [Running ZooKeeper, A CP Distributed System](/docs/tutorials/stateful-application/zookeeper/)
--> -->
## CI/CD 管道 ## CI/CD 管道
@ -155,33 +155,33 @@ Before walking through each tutorial, you may want to bookmark the
## 集群 ## 集群
* [AppArmor](zh/docs/tutorials/clusters/apparmor/) * [AppArmor](/zh/docs/tutorials/clusters/apparmor/)
<!-- <!--
## Clusters ## Clusters
* [AppArmor](zh/docs/tutorials/clusters/apparmor/) * [AppArmor](/docs/tutorials/clusters/apparmor/)
--> -->
## 服务 ## 服务
* [使用源 IP](zh/docs/tutorials/services/source-ip/) * [使用源 IP](/zh/docs/tutorials/services/source-ip/)
<!-- <!--
## Services ## Services
* [Using Source IP](zh/docs/tutorials/services/source-ip/) * [Using Source IP](/docs/tutorials/services/source-ip/)
--> -->
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如果您想编写教程,请参阅[使用页面模板](zh/docs/home/contribute/page-templates/) 如果您想编写教程,请参阅[使用页面模板](/zh/docs/home/contribute/page-templates/)
以获取有关教程页面类型和教程模板的信息。 以获取有关教程页面类型和教程模板的信息。
<!-- <!--
If you would like to write a tutorial, see If you would like to write a tutorial, see
[Using Page Templates](zh/docs/home/contribute/page-templates/) [Using Page Templates](/docs/home/contribute/page-templates/)
for information about the tutorial page type and the tutorial template. for information about the tutorial page type and the tutorial template.
--> -->

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nodes. There are lots of ways to setup the profiles though, such as: --> nodes. There are lots of ways to setup the profiles though, such as: -->
Kubernetes 目前不提供任何本地机制来将 AppArmor 配置文件加载到节点上。有很多方法可以设置配置文件,例如: Kubernetes 目前不提供任何本地机制来将 AppArmor 配置文件加载到节点上。有很多方法可以设置配置文件,例如:
<!-- * Through a [DaemonSet](/zh/docs/concepts/workloads/controllers/daemonset/) that runs a Pod on each node to <!-- * Through a [DaemonSet](/docs/concepts/workloads/controllers/daemonset/) that runs a Pod on each node to
ensure the correct profiles are loaded. An example implementation can be found ensure the correct profiles are loaded. An example implementation can be found
[here](https://git.k8s.io/kubernetes/test/images/apparmor-loader). [here](https://git.k8s.io/kubernetes/test/images/apparmor-loader).
* At node initialization time, using your node initialization scripts (e.g. Salt, Ansible, etc.) or * At node initialization time, using your node initialization scripts (e.g. Salt, Ansible, etc.) or
@ -430,7 +430,7 @@ Kubernetes 目前不提供任何本地机制来将 AppArmor 配置文件加载
<!-- The scheduler is not aware of which profiles are loaded onto which node, so the full set of profiles <!-- The scheduler is not aware of which profiles are loaded onto which node, so the full set of profiles
must be loaded onto every node. An alternative approach is to add a node label for each profile (or must be loaded onto every node. An alternative approach is to add a node label for each profile (or
class of profiles) on the node, and use a class of profiles) on the node, and use a
[node selector](/zh/docs/concepts/configuration/assign-pod-node/) to ensure the Pod is run on a [node selector](/docs/concepts/configuration/assign-pod-node/) to ensure the Pod is run on a
node with the required profile. --> node with the required profile. -->
调度程序不知道哪些配置文件加载到哪个节点上,因此必须将全套配置文件加载到每个节点上。另一种方法是为节点上的每个配置文件(或配置文件类)添加节点标签,并使用[节点选择器](/zh/docs/concepts/configuration/assign pod node/)确保 Pod 在具有所需配置文件的节点上运行。 调度程序不知道哪些配置文件加载到哪个节点上,因此必须将全套配置文件加载到每个节点上。另一种方法是为节点上的每个配置文件(或配置文件类)添加节点标签,并使用[节点选择器](/zh/docs/concepts/configuration/assign pod node/)确保 Pod 在具有所需配置文件的节点上运行。

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<!-- <!--
This page provides a real world example of how to configure Redis using a ConfigMap and builds upon the [Configure Containers Using a ConfigMap](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/) task. This page provides a real world example of how to configure Redis using a ConfigMap and builds upon the [Configure Containers Using a ConfigMap](/docs/tasks/configure-pod-container/configure-pod-configmap/) task.
--> -->
这篇文档基于[使用 ConfigMap 来配置 Containers](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/) 这个任务,提供了一个使用 ConfigMap 来配置 Redis 的真实案例。 这篇文档基于[使用 ConfigMap 来配置 Containers](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/) 这个任务,提供了一个使用 ConfigMap 来配置 Redis 的真实案例。
@ -40,7 +40,7 @@ This page provides a real world example of how to configure Redis using a Config
* {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}} * {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
<!-- <!--
* The example shown on this page works with `kubectl` 1.14 and above. * The example shown on this page works with `kubectl` 1.14 and above.
* Understand [Configure Containers Using a ConfigMap](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/). * Understand [Configure Containers Using a ConfigMap](/docs/tasks/configure-pod-container/configure-pod-configmap/).
--> -->
* 此页面上显示的示例适用于 `kubectl` 1.14和在其以上的版本。 * 此页面上显示的示例适用于 `kubectl` 1.14和在其以上的版本。
* 理解[使用ConfigMap来配置Containers](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/)。 * 理解[使用ConfigMap来配置Containers](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/)。
@ -156,7 +156,7 @@ kubectl delete pod redis
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<!-- <!--
* Learn more about [ConfigMaps](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/). * Learn more about [ConfigMaps](/docs/tasks/configure-pod-container/configure-pod-configmap/).
--> -->
* 了解有关 [ConfigMaps](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/)的更多信息。 * 了解有关 [ConfigMaps](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/)的更多信息。

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<!-- <!--
This tutorial shows you how to run a simple Hello World Node.js app This tutorial shows you how to run a simple Hello World Node.js app
on Kubernetes using [Minikube](zh/docs/setup/learning-environment/minikube) and Katacoda. on Kubernetes using [Minikube](/docs/setup/learning-environment/minikube) and Katacoda.
Katacoda provides a free, in-browser Kubernetes environment. Katacoda provides a free, in-browser Kubernetes environment.
--> -->
本教程向您展示如何使用 [Minikube](zh/docs/setup/learning-environment/minikube) 和 Katacoda 在 Kubernetes 上运行一个简单的 “Hello World” Node.js 应用程序。Katacoda 提供免费的浏览器内 Kubernetes 环境。 本教程向您展示如何使用 [Minikube](/zh/docs/setup/learning-environment/minikube) 和 Katacoda 在 Kubernetes 上运行一个简单的 “Hello World” Node.js 应用程序。Katacoda 提供免费的浏览器内 Kubernetes 环境。
{{< note >}} {{< note >}}
<!-- <!--
You can also follow this tutorial if you've installed [Minikube locally](zh/docs/tasks/tools/install-minikube/). You can also follow this tutorial if you've installed [Minikube locally](/docs/tasks/tools/install-minikube/).
--> -->
如果您已在本地安装 [Minikube](zh/docs/tasks/tools/install-minikube/),也可以按照本教程操作。 如果您已在本地安装 [Minikube](/zh/docs/tasks/tools/install-minikube/),也可以按照本教程操作。
{{< /note >}} {{< /note >}}
@ -117,17 +117,17 @@ For more information on the `docker build` command, read the [Docker documentati
## Create a Deployment ## Create a Deployment
A Kubernetes [*Pod*](zh/docs/concepts/workloads/pods/pod/) is a group of one or more Containers, A Kubernetes [*Pod*](/docs/concepts/workloads/pods/pod/) is a group of one or more Containers,
tied together for the purposes of administration and networking. The Pod in this tied together for the purposes of administration and networking. The Pod in this
tutorial has only one Container. A Kubernetes tutorial has only one Container. A Kubernetes
[*Deployment*](zh/docs/concepts/workloads/controllers/deployment/) checks on the health of your [*Deployment*](/docs/concepts/workloads/controllers/deployment/) checks on the health of your
Pod and restarts the Pod's Container if it terminates. Deployments are the Pod and restarts the Pod's Container if it terminates. Deployments are the
recommended way to manage the creation and scaling of Pods. recommended way to manage the creation and scaling of Pods.
--> -->
## 创建 Deployment ## 创建 Deployment
Kubernetes [*Pod*](zh/docs/concepts/workloads/pods/pod/) 是由一个或多个为了管理和联网而绑定在一起的容器构成的组。本教程中的 Pod 只有一个容器。Kubernetes [*Deployment*](zh/docs/concepts/workloads/controllers/deployment/) 检查 Pod 的健康状况,并在 Pod 中的容器终止的情况下重新启动新的容器。Deployment 是管理 Pod 创建和扩展的推荐方法。 Kubernetes [*Pod*](/zh/docs/concepts/workloads/pods/pod/) 是由一个或多个为了管理和联网而绑定在一起的容器构成的组。本教程中的 Pod 只有一个容器。Kubernetes [*Deployment*](/zh/docs/concepts/workloads/controllers/deployment/) 检查 Pod 的健康状况,并在 Pod 中的容器终止的情况下重新启动新的容器。Deployment 是管理 Pod 创建和扩展的推荐方法。
<!-- <!--
1. Use the `kubectl create` command to create a Deployment that manages a Pod. The 1. Use the `kubectl create` command to create a Deployment that manages a Pod. The
@ -203,9 +203,9 @@ Pod runs a Container based on the provided Docker image.
``` ```
<!-- <!--
{{< note >}}For more information about `kubectl`commands, see the [kubectl overview](zh/docs/user-guide/kubectl-overview/).{{< /note >}} {{< note >}}For more information about `kubectl`commands, see the [kubectl overview](/docs/user-guide/kubectl-overview/).{{< /note >}}
--> -->
{{< note >}}有关 kubectl 命令的更多信息,请参阅 [kubectl 概述](zh/docs/user-guide/kubectl-overview/)。{{< /note >}} {{< note >}}有关 kubectl 命令的更多信息,请参阅 [kubectl 概述](/zh/docs/user-guide/kubectl-overview/)。{{< /note >}}
<!-- <!--
## Create a Service ## Create a Service
@ -213,12 +213,12 @@ Pod runs a Container based on the provided Docker image.
By default, the Pod is only accessible by its internal IP address within the By default, the Pod is only accessible by its internal IP address within the
Kubernetes cluster. To make the `hello-node` Container accessible from outside the Kubernetes cluster. To make the `hello-node` Container accessible from outside the
Kubernetes virtual network, you have to expose the Pod as a Kubernetes virtual network, you have to expose the Pod as a
Kubernetes [*Service*](zh/docs/concepts/services-networking/service/). Kubernetes [*Service*](/docs/concepts/services-networking/service/).
--> -->
## 创建 Service ## 创建 Service
默认情况下Pod 只能通过 Kubernetes 集群中的内部 IP 地址访问。要使得 `hello-node` 容器可以从 Kubernetes 虚拟网络的外部访问,您必须将 Pod 暴露为 Kubernetes [*Service*](zh/docs/concepts/services-networking/service/)。 默认情况下Pod 只能通过 Kubernetes 集群中的内部 IP 地址访问。要使得 `hello-node` 容器可以从 Kubernetes 虚拟网络的外部访问,您必须将 Pod 暴露为 Kubernetes [*Service*](/zh/docs/concepts/services-networking/service/)。
<!-- <!--
1. Expose the Pod to the public internet using the `kubectl expose` command: 1. Expose the Pod to the public internet using the `kubectl expose` command:
@ -447,12 +447,12 @@ minikube delete
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<!-- <!--
* Learn more about [Deployment objects](zh/docs/concepts/workloads/controllers/deployment/). * Learn more about [Deployment objects](/docs/concepts/workloads/controllers/deployment/).
* Learn more about [Deploying applications](zh/docs/tasks/run-application/run-stateless-application-deployment/). * Learn more about [Deploying applications](/docs/tasks/run-application/run-stateless-application-deployment/).
* Learn more about [Service objects](zh/docs/concepts/services-networking/service/). * Learn more about [Service objects](/docs/concepts/services-networking/service/).
--> -->
* 进一步了解 [Deployment 对象](zh/docs/concepts/workloads/controllers/deployment/)。 * 进一步了解 [Deployment 对象](/zh/docs/concepts/workloads/controllers/deployment/)。
* 学习更多关于 [部署应用](zh/docs/tasks/run-application/run-stateless-application-deployment/)。 * 学习更多关于 [部署应用](/zh/docs/tasks/run-application/run-stateless-application-deployment/)。
* 学习更多关于 [Service 对象](zh/docs/concepts/services-networking/service/)。 * 学习更多关于 [Service 对象](/zh/docs/concepts/services-networking/service/)。
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@ -24,8 +24,8 @@ Kubernetes 集群中运行的应用通过 Service 抽象来互相查找、通信
* [NAT](https://en.wikipedia.org/wiki/Network_address_translation): 网络地址转换 * [NAT](https://en.wikipedia.org/wiki/Network_address_translation): 网络地址转换
* [Source NAT](https://en.wikipedia.org/wiki/Network_address_translation#SNAT): 替换数据包的源 IP, 通常为节点的 IP * [Source NAT](https://en.wikipedia.org/wiki/Network_address_translation#SNAT): 替换数据包的源 IP, 通常为节点的 IP
* [Destination NAT](https://en.wikipedia.org/wiki/Network_address_translation#DNAT): 替换数据包的目的 IP, 通常为 Pod 的 IP * [Destination NAT](https://en.wikipedia.org/wiki/Network_address_translation#DNAT): 替换数据包的目的 IP, 通常为 Pod 的 IP
* [VIP](zh/docs/concepts/services-networking/service/#virtual-ips-and-service-proxies): 一个虚拟 IP, 例如分配给每个 Kubernetes Service 的 IP * [VIP](/zh/docs/concepts/services-networking/service/#virtual-ips-and-service-proxies): 一个虚拟 IP, 例如分配给每个 Kubernetes Service 的 IP
* [Kube-proxy](zh/docs/concepts/services-networking/service/#virtual-ips-and-service-proxies): 一个网络守护程序,在每个节点上协调 Service VIP 管理 * [Kube-proxy](/zh/docs/concepts/services-networking/service/#virtual-ips-and-service-proxies): 一个网络守护程序,在每个节点上协调 Service VIP 管理
## 准备工作 ## 准备工作
@ -59,7 +59,7 @@ deployment.apps/source-ip-app created
## Type=ClusterIP 类型 Services 的 Source IP ## Type=ClusterIP 类型 Services 的 Source IP
如果你的 kube-proxy 运行在 [iptables 模式](zh/docs/user-guide/services/#proxy-mode-iptables)下,从集群内部发送到 ClusterIP 的包永远不会进行源地址 NAT这从 Kubernetes 1.2 开始是默认选项。Kube-proxy 通过一个 `proxyMode` endpoint 暴露它的模式。 如果你的 kube-proxy 运行在 [iptables 模式](/zh/docs/user-guide/services/#proxy-mode-iptables)下,从集群内部发送到 ClusterIP 的包永远不会进行源地址 NAT这从 Kubernetes 1.2 开始是默认选项。Kube-proxy 通过一个 `proxyMode` endpoint 暴露它的模式。
```console ```console
kubectl get nodes kubectl get nodes
@ -136,7 +136,7 @@ command=GET
## Type=NodePort 类型 Services 的 Source IP ## Type=NodePort 类型 Services 的 Source IP
从 Kubernetes 1.5 开始,发送给类型为 [Type=NodePort](zh/docs/user-guide/services/#type-nodeport) Services 的数据包默认进行源地址 NAT。你可以通过创建一个 `NodePort` Service 来进行测试: 从 Kubernetes 1.5 开始,发送给类型为 [Type=NodePort](/zh/docs/user-guide/services/#type-nodeport) Services 的数据包默认进行源地址 NAT。你可以通过创建一个 `NodePort` Service 来进行测试:
```console ```console
kubectl expose deployment source-ip-app --name=nodeport --port=80 --target-port=8080 --type=NodePort kubectl expose deployment source-ip-app --name=nodeport --port=80 --target-port=8080 --type=NodePort
@ -189,7 +189,7 @@ client_address=10.240.0.3
``` ```
为了防止这种情况发生Kubernetes 提供了一个特性来保留客户端的源 IP 地址[(点击此处查看可用特性)](zh/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip)。设置 `service.spec.externalTrafficPolicy` 的值为 `Local`,请求就只会被代理到本地 endpoints 而不会被转发到其它节点。这样就保留了最初的源 IP 地址。如果没有本地 endpoints发送到这个节点的数据包将会被丢弃。这样在应用到数据包的任何包处理规则下你都能依赖这个正确的 source-ip 使数据包通过并到达 endpoint。 为了防止这种情况发生Kubernetes 提供了一个特性来保留客户端的源 IP 地址[(点击此处查看可用特性)](/zh/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip)。设置 `service.spec.externalTrafficPolicy` 的值为 `Local`,请求就只会被代理到本地 endpoints 而不会被转发到其它节点。这样就保留了最初的源 IP 地址。如果没有本地 endpoints发送到这个节点的数据包将会被丢弃。这样在应用到数据包的任何包处理规则下你都能依赖这个正确的 source-ip 使数据包通过并到达 endpoint。
设置 `service.spec.externalTrafficPolicy` 字段如下: 设置 `service.spec.externalTrafficPolicy` 字段如下:
@ -244,7 +244,7 @@ client_address=104.132.1.79
## Type=LoadBalancer 类型 Services 的 Source IP ## Type=LoadBalancer 类型 Services 的 Source IP
从Kubernetes1.5开始,发送给类型为 [Type=LoadBalancer](zh/docs/user-guide/services/#type-nodeport) Services 的数据包默认进行源地址 NAT这是因为所有处于 `Ready` 状态的可调度 Kubernetes 节点对于负载均衡的流量都是符合条件的。所以如果数据包到达一个没有 endpoint 的节点,系统将把这个包代理到*有* endpoint 的节点,并替换数据包的源 IP 为节点的 IP如前面章节所述 从Kubernetes1.5开始,发送给类型为 [Type=LoadBalancer](/zh/docs/user-guide/services/#type-nodeport) Services 的数据包默认进行源地址 NAT这是因为所有处于 `Ready` 状态的可调度 Kubernetes 节点对于负载均衡的流量都是符合条件的。所以如果数据包到达一个没有 endpoint 的节点,系统将把这个包代理到*有* endpoint 的节点,并替换数据包的源 IP 为节点的 IP如前面章节所述
你可以通过在一个 loadbalancer 上暴露这个 source-ip-app 来进行测试。 你可以通过在一个 loadbalancer 上暴露这个 source-ip-app 来进行测试。
@ -390,6 +390,6 @@ $ kubectl delete deployment source-ip-app
{{% capture whatsnext %}} {{% capture whatsnext %}}
* 学习更多关于 [通过 services 连接应用](zh/docs/concepts/services-networking/connect-applications-service/) * 学习更多关于 [通过 services 连接应用](/zh/docs/concepts/services-networking/connect-applications-service/)
* 学习更多关于 [负载均衡](zh/docs/user-guide/load-balancer) * 学习更多关于 [负载均衡](/zh/docs/user-guide/load-balancer)
{{% /capture %}} {{% /capture %}}

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@ -15,11 +15,11 @@ approvers:
<!-- <!--
This tutorial provides an introduction to managing applications with This tutorial provides an introduction to managing applications with
[StatefulSets](zh/docs/concepts/workloads/controllers/statefulset/). It [StatefulSets](/docs/concepts/workloads/controllers/statefulset/). It
demonstrates how to create, delete, scale, and update the Pods of StatefulSets. demonstrates how to create, delete, scale, and update the Pods of StatefulSets.
--> -->
本教程介绍如何了使用 [StatefulSets](zh/docs/concepts/abstractions/controllers/statefulsets/) 来管理应用。演示了如何创建、删除、扩容/缩容和更新 StatefulSets 的 Pods。 本教程介绍如何了使用 [StatefulSets](/zh/docs/concepts/abstractions/controllers/statefulsets/) 来管理应用。演示了如何创建、删除、扩容/缩容和更新 StatefulSets 的 Pods。
{{% /capture %}} {{% /capture %}}
@ -32,13 +32,13 @@ following Kubernetes concepts.
在开始本教程之前,你应该熟悉以下 Kubernetes 的概念: 在开始本教程之前,你应该熟悉以下 Kubernetes 的概念:
* [Pods](zh/docs/user-guide/pods/single-container/) * [Pods](/zh/docs/user-guide/pods/single-container/)
* [Cluster DNS](zh/docs/concepts/services-networking/dns-pod-service/) * [Cluster DNS](/zh/docs/concepts/services-networking/dns-pod-service/)
* [Headless Services](zh/docs/concepts/services-networking/service/#headless-services) * [Headless Services](/zh/docs/concepts/services-networking/service/#headless-services)
* [PersistentVolumes](zh/docs/concepts/storage/persistent-volumes/) * [PersistentVolumes](/zh/docs/concepts/storage/persistent-volumes/)
* [PersistentVolume Provisioning](https://github.com/kubernetes/examples/tree/{{< param "githubbranch" >}}/staging/persistent-volume-provisioning/) * [PersistentVolume Provisioning](https://github.com/kubernetes/examples/tree/{{< param "githubbranch" >}}/staging/persistent-volume-provisioning/)
* [StatefulSets](zh/docs/concepts/workloads/controllers/statefulset/) * [StatefulSets](/zh/docs/concepts/workloads/controllers/statefulset/)
* [kubectl CLI](zh/docs/user-guide/kubectl/) * [kubectl CLI](/zh/docs/user-guide/kubectl/)
<!-- <!--
This tutorial assumes that your cluster is configured to dynamically provision This tutorial assumes that your cluster is configured to dynamically provision
@ -87,7 +87,7 @@ StatefulSets 旨在与有状态的应用及分布式系统一起使用。然而
## 创建 StatefulSet ## 创建 StatefulSet
作为开始,使用如下示例创建一个 StatefulSet。它和 [StatefulSets](zh/docs/concepts/abstractions/controllers/statefulsets/) 概念中的示例相似。它创建了一个 [Headless Service](zh/docs/user-guide/services/#headless-services) `nginx` 用来发布 StatefulSet `web` 中的 Pod 的 IP 地址。 作为开始,使用如下示例创建一个 StatefulSet。它和 [StatefulSets](/zh/docs/concepts/abstractions/controllers/statefulsets/) 概念中的示例相似。它创建了一个 [Headless Service](/zh/docs/user-guide/services/#headless-services) `nginx` 用来发布 StatefulSet `web` 中的 Pod 的 IP 地址。
{{< codenew file="application/web/web.yaml" >}} {{< codenew file="application/web/web.yaml" >}}
@ -95,14 +95,14 @@ StatefulSets 旨在与有状态的应用及分布式系统一起使用。然而
Download the example above, and save it to a file named `web.yaml` Download the example above, and save it to a file named `web.yaml`
You will need to use two terminal windows. In the first terminal, use You will need to use two terminal windows. In the first terminal, use
[`kubectl get`](zh/docs/reference/generated/kubectl/kubectl-commands/#get) to watch the creation [`kubectl get`](/docs/reference/generated/kubectl/kubectl-commands/#get) to watch the creation
of the StatefulSet's Pods. of the StatefulSet's Pods.
--> -->
下载上面的例子并保存为文件 `web.yaml` 下载上面的例子并保存为文件 `web.yaml`
你需要使用两个终端窗口。在第一个终端中,使用 [`kubectl get`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#get) 来查看 StatefulSet 的 Pods 的创建情况。 你需要使用两个终端窗口。在第一个终端中,使用 [`kubectl get`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#get) 来查看 StatefulSet 的 Pods 的创建情况。
```shell ```shell
kubectl get pods -w -l app=nginx kubectl get pods -w -l app=nginx
@ -110,11 +110,11 @@ kubectl get pods -w -l app=nginx
<!-- <!--
In the second terminal, use In the second terminal, use
[`kubectl apply`](zh/docs/reference/generated/kubectl/kubectl-commands/#apply) to create the [`kubectl apply`](/docs/reference/generated/kubectl/kubectl-commands/#apply) to create the
Headless Service and StatefulSet defined in `web.yaml`. Headless Service and StatefulSet defined in `web.yaml`.
--> -->
在另一个终端中,使用 [`kubectl apply`](zh/docs/reference/generated/kubectl/kubectl-commands/#apply)来创建定义在 `web.yaml` 中的 Headless Service 和 StatefulSet。 在另一个终端中,使用 [`kubectl apply`](/zh/docs/reference/generated/kubectl/kubectl-commands/#apply)来创建定义在 `web.yaml` 中的 Headless Service 和 StatefulSet。
```shell ```shell
kubectl apply -f web.yaml kubectl apply -f web.yaml
@ -170,9 +170,9 @@ web-1 1/1 Running 0 18s
<!-- <!--
Notice that the `web-1` Pod is not launched until the `web-0` Pod is Notice that the `web-1` Pod is not launched until the `web-0` Pod is
[Running and Ready](zh/docs/user-guide/pod-states). [Running and Ready](/docs/user-guide/pod-states).
--> -->
请注意在 `web-0` Pod 处于 [Running和Ready](zh/docs/user-guide/pod-states) 状态后 `web-1` Pod 才会被启动。 请注意在 `web-0` Pod 处于 [Running和Ready](/zh/docs/user-guide/pod-states) 状态后 `web-1` Pod 才会被启动。
<!-- <!--
## Pods in a StatefulSet ## Pods in a StatefulSet
@ -205,7 +205,7 @@ web-1 1/1 Running 0 1m
``` ```
<!-- <!--
As mentioned in the [StatefulSets](zh/docs/concepts/workloads/controllers/statefulset/) As mentioned in the [StatefulSets](/docs/concepts/workloads/controllers/statefulset/)
concept, the Pods in a StatefulSet have a sticky, unique identity. This identity concept, the Pods in a StatefulSet have a sticky, unique identity. This identity
is based on a unique ordinal index that is assigned to each Pod by the is based on a unique ordinal index that is assigned to each Pod by the
StatefulSet controller. The Pods' names take the form StatefulSet controller. The Pods' names take the form
@ -215,15 +215,15 @@ replicas, it creates two Pods, `web-0` and `web-1`.
### Using Stable Network Identities ### Using Stable Network Identities
Each Pod has a stable hostname based on its ordinal index. Use Each Pod has a stable hostname based on its ordinal index. Use
[`kubectl exec`](zh/docs/reference/generated/kubectl/kubectl-commands/#exec) to execute the [`kubectl exec`](/docs/reference/generated/kubectl/kubectl-commands/#exec) to execute the
`hostname` command in each Pod. `hostname` command in each Pod.
--> -->
如同 [StatefulSets](zh/docs/concepts/abstractions/controllers/statefulsets/) 概念中所提到的StatefulSet 中的 Pod 拥有一个具有黏性的、独一无二的身份标志。这个标志基于 StatefulSet 控制器分配给每个 Pod 的唯一顺序索引。Pod 的名称的形式为`<statefulset name>-<ordinal index>`。`web`StatefulSet 拥有两个副本,所以它创建了两个 Pod`web-0`和`web-1`。 如同 [StatefulSets](/zh/docs/concepts/abstractions/controllers/statefulsets/) 概念中所提到的StatefulSet 中的 Pod 拥有一个具有黏性的、独一无二的身份标志。这个标志基于 StatefulSet 控制器分配给每个 Pod 的唯一顺序索引。Pod 的名称的形式为`<statefulset name>-<ordinal index>`。`web`StatefulSet 拥有两个副本,所以它创建了两个 Pod`web-0`和`web-1`。
### 使用稳定的网络身份标识 ### 使用稳定的网络身份标识
每个 Pod 都拥有一个基于其顺序索引的稳定的主机名。使用[`kubectl exec`](zh/docs/reference/generated/kubectl/kubectl-commands/#exec)在每个 Pod 中执行`hostname`。 每个 Pod 都拥有一个基于其顺序索引的稳定的主机名。使用[`kubectl exec`](/zh/docs/reference/generated/kubectl/kubectl-commands/#exec)在每个 Pod 中执行`hostname`。
```shell ```shell
for i in 0 1; do kubectl exec web-$i -- sh -c 'hostname'; done for i in 0 1; do kubectl exec web-$i -- sh -c 'hostname'; done
@ -232,13 +232,13 @@ web-1
``` ```
<!-- <!--
Use [`kubectl run`](zh/docs/reference/generated/kubectl/kubectl-commands/#run) to execute Use [`kubectl run`](/docs/reference/generated/kubectl/kubectl-commands/#run) to execute
a container that provides the `nslookup` command from the `dnsutils` package. a container that provides the `nslookup` command from the `dnsutils` package.
Using `nslookup` on the Pods' hostnames, you can examine their in-cluster DNS Using `nslookup` on the Pods' hostnames, you can examine their in-cluster DNS
addresses. addresses.
--> -->
使用 [`kubectl run`](zh/docs/reference/generated/kubectl/kubectl-commands/#run) 运行一个提供 `nslookup` 命令的容器,该命令来自于 `dnsutils` 包。通过对 Pod 的主机名执行 `nslookup`,你可以检查他们在集群内部的 DNS 地址。 使用 [`kubectl run`](/zh/docs/reference/generated/kubectl/kubectl-commands/#run) 运行一个提供 `nslookup` 命令的容器,该命令来自于 `dnsutils` 包。通过对 Pod 的主机名执行 `nslookup`,你可以检查他们在集群内部的 DNS 地址。
```shell ```shell
kubectl run -i --tty --image busybox:1.28 dns-test --restart=Never --rm kubectl run -i --tty --image busybox:1.28 dns-test --restart=Never --rm
@ -274,11 +274,11 @@ kubectl get pod -w -l app=nginx
``` ```
<!-- <!--
In a second terminal, use In a second terminal, use
[`kubectl delete`](zh/docs/reference/generated/kubectl/kubectl-commands/#delete) to delete all [`kubectl delete`](/docs/reference/generated/kubectl/kubectl-commands/#delete) to delete all
the Pods in the StatefulSet. the Pods in the StatefulSet.
--> -->
在另一个终端中使用 [`kubectl delete`](zh/docs/reference/generated/kubectl/kubectl-commands/#delete) 删除 StatefulSet 中所有的 Pod。 在另一个终端中使用 [`kubectl delete`](/zh/docs/reference/generated/kubectl/kubectl-commands/#delete) 删除 StatefulSet 中所有的 Pod。
```shell ```shell
kubectl delete pod -l app=nginx kubectl delete pod -l app=nginx
@ -382,7 +382,7 @@ www-web-1 Bound pvc-15c79307-b507-11e6-932f-42010a800002 1Gi RWO
<!-- <!--
The StatefulSet controller created two PersistentVolumeClaims that are The StatefulSet controller created two PersistentVolumeClaims that are
bound to two [PersistentVolumes](zh/docs/concepts/storage/persistent-volumes/). As the cluster used in this tutorial is configured to dynamically provision bound to two [PersistentVolumes](/docs/concepts/storage/persistent-volumes/). As the cluster used in this tutorial is configured to dynamically provision
PersistentVolumes, the PersistentVolumes were created and bound automatically. PersistentVolumes, the PersistentVolumes were created and bound automatically.
The NGINX webservers, by default, will serve an index file at The NGINX webservers, by default, will serve an index file at
@ -394,7 +394,7 @@ Write the Pods' hostnames to their `index.html` files and verify that the NGINX
webservers serve the hostnames. webservers serve the hostnames.
--> -->
StatefulSet 控制器创建了两个 PersistentVolumeClaims绑定到两个 [PersistentVolumes](zh/docs/concepts/storage/volumes/)。由于本教程使用的集群配置为动态提供 PersistentVolume所有的 PersistentVolume 都是自动创建和绑定的。 StatefulSet 控制器创建了两个 PersistentVolumeClaims绑定到两个 [PersistentVolumes](/zh/docs/concepts/storage/volumes/)。由于本教程使用的集群配置为动态提供 PersistentVolume所有的 PersistentVolume 都是自动创建和绑定的。
NGINX web 服务器默认会加载位于 `/usr/share/nginx/html/index.html` 的 index 文件。StatefulSets `spec` 中的 `volumeMounts` 字段保证了 `/usr/share/nginx/html` 文件夹由一个 PersistentVolume 支持。 NGINX web 服务器默认会加载位于 `/usr/share/nginx/html/index.html` 的 index 文件。StatefulSets `spec` 中的 `volumeMounts` 字段保证了 `/usr/share/nginx/html` 文件夹由一个 PersistentVolume 支持。
@ -491,8 +491,8 @@ mounted to the appropriate mount points.
## Scaling a StatefulSet ## Scaling a StatefulSet
Scaling a StatefulSet refers to increasing or decreasing the number of replicas. Scaling a StatefulSet refers to increasing or decreasing the number of replicas.
This is accomplished by updating the `replicas` field. You can use either This is accomplished by updating the `replicas` field. You can use either
[`kubectl scale`](zh/docs/reference/generated/kubectl/kubectl-commands/#scale) or [`kubectl scale`](/docs/reference/generated/kubectl/kubectl-commands/#scale) or
[`kubectl patch`](zh/docs/reference/generated/kubectl/kubectl-commands/#patch) to scale a StatefulSet. [`kubectl patch`](/docs/reference/generated/kubectl/kubectl-commands/#patch) to scale a StatefulSet.
### Scaling Up ### Scaling Up
@ -504,7 +504,7 @@ In one terminal window, watch the Pods in the StatefulSet.
## 扩容/缩容 StatefulSet ## 扩容/缩容 StatefulSet
扩容/缩容 StatefulSet 指增加或减少它的副本数。这通过更新 `replicas` 字段完成。你可以使用[`kubectl scale`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#scale) 或者[`kubectl patch`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#patch)来扩容/缩容一个 StatefulSet。 扩容/缩容 StatefulSet 指增加或减少它的副本数。这通过更新 `replicas` 字段完成。你可以使用[`kubectl scale`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#scale) 或者[`kubectl patch`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#patch)来扩容/缩容一个 StatefulSet。
### 扩容 ### 扩容
@ -1071,13 +1071,13 @@ kubectl get pods -w -l app=nginx
``` ```
<!-- <!--
Use [`kubectl delete`](zh/docs/reference/generated/kubectl/kubectl-commands/#delete) to delete the Use [`kubectl delete`](/docs/reference/generated/kubectl/kubectl-commands/#delete) to delete the
StatefulSet. Make sure to supply the `--cascade=false` parameter to the StatefulSet. Make sure to supply the `--cascade=false` parameter to the
command. This parameter tells Kubernetes to only delete the StatefulSet, and to command. This parameter tells Kubernetes to only delete the StatefulSet, and to
not delete any of its Pods. not delete any of its Pods.
--> -->
使用 [`kubectl delete`](zh/docs/reference/generated/kubectl/kubectl-commands/#delete) 删除 StatefulSet。请确保提供了 `--cascade=false` 参数给命令。这个参数告诉 Kubernetes 只删除 StatefulSet 而不要删除它的任何 Pod。 使用 [`kubectl delete`](/zh/docs/reference/generated/kubectl/kubectl-commands/#delete) 删除 StatefulSet。请确保提供了 `--cascade=false` 参数给命令。这个参数告诉 Kubernetes 只删除 StatefulSet 而不要删除它的任何 Pod。
```shell ```shell
kubectl delete statefulset web --cascade=false kubectl delete statefulset web --cascade=false

View File

@ -28,18 +28,18 @@ title: "Example: Deploying Cassandra with Stateful Sets"
本示例也使用了Kubernetes的一些核心组件 本示例也使用了Kubernetes的一些核心组件
- [_Pods_](zh/docs/user-guide/pods) - [_Pods_](/zh/docs/user-guide/pods)
- [ _Services_](zh/docs/user-guide/services) - [ _Services_](/zh/docs/user-guide/services)
- [_Replication Controllers_](zh/docs/user-guide/replication-controller) - [_Replication Controllers_](/zh/docs/user-guide/replication-controller)
- [_Stateful Sets_](zh/docs/concepts/workloads/controllers/statefulset/) - [_Stateful Sets_](/zh/docs/concepts/workloads/controllers/statefulset/)
- [_Daemon Sets_](zh/docs/admin/daemons) - [_Daemon Sets_](/zh/docs/admin/daemons)
## 准备工作 ## 准备工作
本示例假设你已经安装运行了一个 Kubernetes集群版本 >=1.2),并且还在某个路径下安装了 [`kubectl`](zh/docs/tasks/tools/install-kubectl/) 命令行工具。请查看 [getting started guides](zh/docs/getting-started-guides/) 获取关于你的平台的安装说明。 本示例假设你已经安装运行了一个 Kubernetes集群版本 >=1.2),并且还在某个路径下安装了 [`kubectl`](/zh/docs/tasks/tools/install-kubectl/) 命令行工具。请查看 [getting started guides](/zh/docs/getting-started-guides/) 获取关于你的平台的安装说明。
本示例还需要一些代码和配置文件。为了避免手动输入,你可以 `git clone` Kubernetes 源到你本地。 本示例还需要一些代码和配置文件。为了避免手动输入,你可以 `git clone` Kubernetes 源到你本地。
@ -133,7 +133,7 @@ kubectl delete daemonset cassandra
## 步骤 1创建 Cassandra Headless Service ## 步骤 1创建 Cassandra Headless Service
Kubernetes _[Service](zh/docs/user-guide/services)_ 描述一组执行同样任务的 [_Pod_](zh/docs/user-guide/pods)。在 Kubernetes 中,一个应用的原子调度单位是一个 Pod一个或多个_必须_调度到相同主机上的容器。 Kubernetes _[Service](/zh/docs/user-guide/services)_ 描述一组执行同样任务的 [_Pod_](/zh/docs/user-guide/pods)。在 Kubernetes 中,一个应用的原子调度单位是一个 Pod一个或多个_必须_调度到相同主机上的容器。
这个 Service 用于在 Kubernetes 集群内部进行 Cassandra 客户端和 Cassandra Pod 之间的 DNS 查找。 这个 Service 用于在 Kubernetes 集群内部进行 Cassandra 客户端和 Cassandra Pod 之间的 DNS 查找。
@ -354,7 +354,7 @@ $ kubectl exec cassandra-0 -- cqlsh -e 'desc keyspaces'
system_traces system_schema system_auth system system_distributed system_traces system_schema system_auth system system_distributed
``` ```
你需要使用 `kubectl edit` 来增加或减小 Cassandra StatefulSet 的大小。你可以在[文档](zh/docs/user-guide/kubectl/kubectl_edit) 中找到更多关于 `edit` 命令的信息。 你需要使用 `kubectl edit` 来增加或减小 Cassandra StatefulSet 的大小。你可以在[文档](/zh/docs/user-guide/kubectl/kubectl_edit) 中找到更多关于 `edit` 命令的信息。
使用以下命令编辑 StatefulSet。 使用以下命令编辑 StatefulSet。
@ -429,7 +429,7 @@ $ grace=$(kubectl get po cassandra-0 -o=jsonpath='{.spec.terminationGracePeriodS
## 步骤 5使用 Replication Controller 创建 Cassandra 节点 pod ## 步骤 5使用 Replication Controller 创建 Cassandra 节点 pod
Kubernetes _[Replication Controller](zh/docs/user-guide/replication-controller)_ 负责复制一个完全相同的 pod 集合。像 Service 一样,它具有一个 selector query用来识别它的集合成员。和 Service 不一样的是,它还具有一个期望的副本数,并且会通过创建或删除 Pod 来保证 Pod 的数量满足它期望的状态。 Kubernetes _[Replication Controller](/zh/docs/user-guide/replication-controller)_ 负责复制一个完全相同的 pod 集合。像 Service 一样,它具有一个 selector query用来识别它的集合成员。和 Service 不一样的是,它还具有一个期望的副本数,并且会通过创建或删除 Pod 来保证 Pod 的数量满足它期望的状态。
和我们刚才定义的 Service 一起Replication Controller 能够让我们轻松的构建一个复制的、可扩展的 Cassandra 集群。 和我们刚才定义的 Service 一起Replication Controller 能够让我们轻松的构建一个复制的、可扩展的 Cassandra 集群。
@ -639,7 +639,7 @@ $ kubectl delete rc cassandra
## 步骤 8使用 DaemonSet 替换 Replication Controller ## 步骤 8使用 DaemonSet 替换 Replication Controller
在 Kubernetes中[_DaemonSet_](zh/docs/admin/daemons) 能够将 pod 一对一的分布到 Kubernetes 节点上。和 _ReplicationController_ 相同的是它也有一个用于识别它的集合成员的 selector query。但和 _ReplicationController_ 不同的是,它拥有一个节点 selector用于限制基于模板的 pod 可以调度的节点。并且 pod 的复制不是基于一个设置的数量,而是为每一个节点分配一个 pod。 在 Kubernetes中[_DaemonSet_](/zh/docs/admin/daemons) 能够将 pod 一对一的分布到 Kubernetes 节点上。和 _ReplicationController_ 相同的是它也有一个用于识别它的集合成员的 selector query。但和 _ReplicationController_ 不同的是,它拥有一个节点 selector用于限制基于模板的 pod 可以调度的节点。并且 pod 的复制不是基于一个设置的数量,而是为每一个节点分配一个 pod。
示范用例当部署到云平台时预期情况是实例是短暂的并且随时可能终止。Cassandra 被搭建成为在各个节点间复制数据以便于实现数据冗余。这样的话,即使一个实例终止了,存储在它上面的数据却没有,并且集群会通过重新复制数据到其它运行节点来作为响应。 示范用例当部署到云平台时预期情况是实例是短暂的并且随时可能终止。Cassandra 被搭建成为在各个节点间复制数据以便于实现数据冗余。这样的话,即使一个实例终止了,存储在它上面的数据却没有,并且集群会通过重新复制数据到其它运行节点来作为响应。
@ -802,6 +802,6 @@ $ kubectl delete daemonset cassandra
查看本示例的 [image](https://github.com/kubernetes/examples/tree/master/cassandra/image) 目录,了解如何构建容器的 docker 镜像及其内容。 查看本示例的 [image](https://github.com/kubernetes/examples/tree/master/cassandra/image) 目录,了解如何构建容器的 docker 镜像及其内容。
你可能还注意到我们设置了一些 Cassandra 参数(`MAX_HEAP_SIZE`和`HEAP_NEWSIZE`),并且增加了关于 [namespace](zh/docs/user-guide/namespaces) 的信息。我们还告诉 Kubernetes 容器暴露了 `CQL``Thrift` API 端口。最后,我们告诉集群管理器我们需要 0.1 cpu0.1 核)。 你可能还注意到我们设置了一些 Cassandra 参数(`MAX_HEAP_SIZE`和`HEAP_NEWSIZE`),并且增加了关于 [namespace](/zh/docs/user-guide/namespaces) 的信息。我们还告诉 Kubernetes 容器暴露了 `CQL``Thrift` API 端口。最后,我们告诉集群管理器我们需要 0.1 cpu0.1 核)。
[!Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/cassandra/README.md?pixel)]() [!Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/cassandra/README.md?pixel)]()

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<!-- <!--
A [PersistentVolume](zh/docs/concepts/storage/persistent-volumes/)(PV)is a piece of storage in the cluster that has been manually provisioned by an administrator, or dynamically provisioned by Kubernetes using a [StorageClass](zh/docs/concepts/storage/storage-classes). A [PersistentVolumeClaim](zh/docs/concepts/storage/persistent-volumes/#persistentvolumeclaims)(PVC)is a request for storage by a user that can be fulfilled by a PV. PersistentVolumes and PersistentVolumeClaims are independent from Pod lifecycles and preserve data through restarting, rescheduling, and even deleting Pods. A [PersistentVolume](/docs/concepts/storage/persistent-volumes/)(PV)is a piece of storage in the cluster that has been manually provisioned by an administrator, or dynamically provisioned by Kubernetes using a [StorageClass](/docs/concepts/storage/storage-classes). A [PersistentVolumeClaim](/docs/concepts/storage/persistent-volumes/#persistentvolumeclaims)(PVC)is a request for storage by a user that can be fulfilled by a PV. PersistentVolumes and PersistentVolumeClaims are independent from Pod lifecycles and preserve data through restarting, rescheduling, and even deleting Pods.
--> -->
[PersistentVolume](zh/docs/concepts/storage/persistent-volumes/)PV是一块集群里由管理员手动提供或 kubernetes 通过 [StorageClass](zh/docs/concepts/storage/storage-classes) 动态创建的存储。 [PersistentVolume](/zh/docs/concepts/storage/persistent-volumes/)PV是一块集群里由管理员手动提供或 kubernetes 通过 [StorageClass](/zh/docs/concepts/storage/storage-classes) 动态创建的存储。
[PersistentVolumeClaim](zh/docs/concepts/storage/persistent-volumes/#persistentvolumeclaims)PVC是一个满足对 PV 存储需要的请求。PersistentVolumes 和 PersistentVolumeClaims 是独立于 Pod 生命周期而在 Pod 重启,重新调度甚至删除过程中保存数据。 [PersistentVolumeClaim](/zh/docs/concepts/storage/persistent-volumes/#persistentvolumeclaims)PVC是一个满足对 PV 存储需要的请求。PersistentVolumes 和 PersistentVolumeClaims 是独立于 Pod 生命周期而在 Pod 重启,重新调度甚至删除过程中保存数据。
{{< warning >}} {{< warning >}}
<!-- <!--
@ -146,12 +146,12 @@ If you are bringing up a cluster that needs to use the `hostPath` provisioner, t
### 创建 Secret 生成器 ### 创建 Secret 生成器
<!-- <!--
A [Secret](zh/docs/concepts/configuration/secret/) is an object that stores a piece of sensitive data like a password or key. Since 1.14, `kubectl` supports the management of Kubernetes objects using a kustomization file. You can create a Secret by generators in `kustomization.yaml`. A [Secret](/docs/concepts/configuration/secret/) is an object that stores a piece of sensitive data like a password or key. Since 1.14, `kubectl` supports the management of Kubernetes objects using a kustomization file. You can create a Secret by generators in `kustomization.yaml`.
Add a Secret generator in `kustomization.yaml` from the following command. You will need to replace `YOUR_PASSWORD` with the password you want to use. Add a Secret generator in `kustomization.yaml` from the following command. You will need to replace `YOUR_PASSWORD` with the password you want to use.
--> -->
A [Secret](zh/docs/concepts/configuration/secret/) 是存储诸如密码或密钥之类的敏感数据的对象。从 1.14 开始,`kubectl`支持使用 kustomization 文件管理 Kubernetes 对象。您可以通过`kustomization.yaml`中的生成器创建一个 Secret。 A [Secret](/zh/docs/concepts/configuration/secret/) 是存储诸如密码或密钥之类的敏感数据的对象。从 1.14 开始,`kubectl`支持使用 kustomization 文件管理 Kubernetes 对象。您可以通过`kustomization.yaml`中的生成器创建一个 Secret。
通过以下命令在`kustomization.yaml`中添加一个 Secret 生成器。您需要用您要使用的密码替换`YOUR_PASSWORD`。 通过以下命令在`kustomization.yaml`中添加一个 Secret 生成器。您需要用您要使用的密码替换`YOUR_PASSWORD`。
@ -453,24 +453,16 @@ Do not leave your WordPress installation on this page. If another user finds it,
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* Learn more about [Introspection and Debugging](zh/docs/tasks/debug-application-cluster/debug-application-introspection/) <!--
* Learn more about [Jobs](zh/docs/concepts/workloads/controllers/jobs-run-to-completion/) * Learn more about [Introspection and Debugging](/docs/tasks/debug-application-cluster/debug-application-introspection/)
* Learn more about [Port Forwarding](zh/docs/tasks/access-application-cluster/port-forward-access-application-cluster/) * Learn more about [Jobs](/docs/concepts/workloads/controllers/jobs-run-to-completion/)
* Learn how to [Get a Shell to a Container](zh/docs/tasks/debug-application-cluster/get-shell-running-container/) * Learn more about [Port Forwarding](/docs/tasks/access-application-cluster/port-forward-access-application-cluster/)
* Learn how to [Get a Shell to a Container](/docs/tasks/debug-application-cluster/get-shell-running-container/)
--> -->
1. 运行以下命令以删除您的 SecretDeploymentsServices 和 PersistentVolumeClaims
```shell * 了解更多关于 [Introspection and Debugging](/zh/docs/tasks/debug-application-cluster/debug-application-introspection/)
kubectl delete -k ./ * 了解更多关于 [Jobs](/zh/docs/concepts/workloads/controllers/jobs-run-to-completion/)
``` * 了解更多关于 [Port Forwarding](/zh/docs/tasks/access-application-cluster/port-forward-access-application-cluster/)
* 了解如何 [Get a Shell to a Container](/zh/docs/tasks/debug-application-cluster/get-shell-running-container/)
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* 了解更多关于 [Introspection and Debugging](zh/docs/tasks/debug-application-cluster/debug-application-introspection/)
* 了解更多关于 [Jobs](zh/docs/concepts/workloads/controllers/jobs-run-to-completion/)
* 了解更多关于 [Port Forwarding](zh/docs/tasks/access-application-cluster/port-forward-access-application-cluster/)
* 了解如何 [Get a Shell to a Container](zh/docs/tasks/debug-application-cluster/get-shell-running-container/)
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本教程展示了在 Kubernetes 上使用 [PodDisruptionBudgets](zh/docs/admin/disruptions/#specifying-a-poddisruptionbudget) 和 [PodAntiAffinity](zh/docs/user-guide/node-selection/#inter-pod-affinity-and-anti-affinity-beta-feature) 特性运行 [Apache Zookeeper](https://zookeeper.apache.org)。 本教程展示了在 Kubernetes 上使用 [PodDisruptionBudgets](/zh/docs/admin/disruptions/#specifying-a-poddisruptionbudget) 和 [PodAntiAffinity](/zh/docs/user-guide/node-selection/#inter-pod-affinity-and-anti-affinity-beta-feature) 特性运行 [Apache Zookeeper](https://zookeeper.apache.org)。
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在开始本教程前,你应该熟悉以下 Kubernetes 概念。 在开始本教程前,你应该熟悉以下 Kubernetes 概念。
* [Pods](zh/docs/user-guide/pods/single-container/) * [Pods](/zh/docs/user-guide/pods/single-container/)
* [Cluster DNS](zh/docs/concepts/services-networking/dns-pod-service/) * [Cluster DNS](/zh/docs/concepts/services-networking/dns-pod-service/)
* [Headless Services](zh/docs/concepts/services-networking/service/#headless-services) * [Headless Services](/zh/docs/concepts/services-networking/service/#headless-services)
* [PersistentVolumes](zh/docs/concepts/storage/volumes/) * [PersistentVolumes](/zh/docs/concepts/storage/volumes/)
* [PersistentVolume Provisioning](http://releases.k8s.io/{{< param "githubbranch" >}}/examples/persistent-volume-provisioning/) * [PersistentVolume Provisioning](http://releases.k8s.io/{{< param "githubbranch" >}}/examples/persistent-volume-provisioning/)
* [ConfigMaps](zh/docs/tasks/configure-pod-container/configure-pod-configmap/) * [ConfigMaps](/zh/docs/tasks/configure-pod-container/configure-pod-configmap/)
* [StatefulSets](zh/docs/concepts/abstractions/controllers/statefulsets/) * [StatefulSets](/zh/docs/concepts/abstractions/controllers/statefulsets/)
* [PodDisruptionBudgets](zh/docs/admin/disruptions/#specifying-a-poddisruptionbudget) * [PodDisruptionBudgets](/zh/docs/admin/disruptions/#specifying-a-poddisruptionbudget)
* [PodAntiAffinity](zh/docs/user-guide/node-selection/#inter-pod-affinity-and-anti-affinity-beta-feature) * [PodAntiAffinity](/zh/docs/user-guide/node-selection/#inter-pod-affinity-and-anti-affinity-beta-feature)
* [kubectl CLI](zh/docs/user-guide/kubectl) * [kubectl CLI](/zh/docs/user-guide/kubectl)
@ -69,14 +69,14 @@ ZooKeeper 在内存中保存它们的整个状态机,但是每个改变都被
下面的清单包含一个 下面的清单包含一个
[Headless Service](zh/docs/concepts/services-networking/service/#headless-services) [Headless Service](/zh/docs/concepts/services-networking/service/#headless-services)
一个 [Service](zh/docs/concepts/services-networking/service/) 一个 [Service](/zh/docs/concepts/services-networking/service/)
一个 [PodDisruptionBudget](zh/docs/concepts/workloads/pods/disruptions//#specifying-a-poddisruptionbudget) 一个 [PodDisruptionBudget](/zh/docs/concepts/workloads/pods/disruptions//#specifying-a-poddisruptionbudget)
和一个 [StatefulSet](zh/docs/concepts/workloads/controllers/statefulset/)。 和一个 [StatefulSet](/zh/docs/concepts/workloads/controllers/statefulset/)。
{{< codenew file="application/zookeeper/zookeeper.yaml" >}} {{< codenew file="application/zookeeper/zookeeper.yaml" >}}
打开一个命令行终端,使用 [`kubectl apply`](zh/docs/reference/generated/kubectl/kubectl-commands/#apply) 打开一个命令行终端,使用 [`kubectl apply`](/zh/docs/reference/generated/kubectl/kubectl-commands/#apply)
创建这个清单。 创建这个清单。
```shell ```shell
@ -92,7 +92,7 @@ poddisruptionbudget.policy/zk-pdb created
statefulset.apps/zk created statefulset.apps/zk created
``` ```
使用 [`kubectl get`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#get) 查看 StatefulSet 控制器创建的 Pods。 使用 [`kubectl get`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#get) 查看 StatefulSet 控制器创建的 Pods。
```shell ```shell
kubectl get pods -w -l app=zk kubectl get pods -w -l app=zk
@ -130,7 +130,7 @@ StatefulSet 控制器创建了3个 Pods每个 Pod 包含一个 [ZooKeeper 3.4
由于在匿名网络中没有用于选举 leader 的终止算法Zab 要求显式的进行成员关系配置,以执行 leader 选举。Ensemble 中的每个服务都需要具有一个独一无二的标识符,所有的服务均需要知道标识符的全集,并且每个标志都需要和一个网络地址相关联。 由于在匿名网络中没有用于选举 leader 的终止算法Zab 要求显式的进行成员关系配置,以执行 leader 选举。Ensemble 中的每个服务都需要具有一个独一无二的标识符,所有的服务均需要知道标识符的全集,并且每个标志都需要和一个网络地址相关联。
使用 [`kubectl exec`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#exec) 获取 `zk` StatefulSet 中 Pods 的主机名。 使用 [`kubectl exec`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#exec) 获取 `zk` StatefulSet 中 Pods 的主机名。
```shell ```shell
for i in 0 1 2; do kubectl exec zk-$i -- hostname; done for i in 0 1 2; do kubectl exec zk-$i -- hostname; done
@ -184,7 +184,7 @@ zk-2.zk-headless.default.svc.cluster.local
``` ```
[Kubernetes DNS](zh/docs/concepts/services-networking/dns-pod-service/) 中的 A 记录将 FQDNs 解析成为 Pods 的 IP 地址。如果 Pods 被调度,这个 A 记录将会使用 Pods 的新 IP 地址更新,但 A 记录的名称不会改变。 [Kubernetes DNS](/zh/docs/concepts/services-networking/dns-pod-service/) 中的 A 记录将 FQDNs 解析成为 Pods 的 IP 地址。如果 Pods 被调度,这个 A 记录将会使用 Pods 的新 IP 地址更新,但 A 记录的名称不会改变。
ZooKeeper 在一个名为 `zoo.cfg` 的文件中保存它的应用配置。使用 `kubectl exec``zk-0` Pod 中查看 `zoo.cfg` 文件的内容。 ZooKeeper 在一个名为 `zoo.cfg` 的文件中保存它的应用配置。使用 `kubectl exec``zk-0` Pod 中查看 `zoo.cfg` 文件的内容。
@ -320,7 +320,7 @@ numChildren = 0
如同在 [ZooKeeper 基础](#zookeeper-basics) 一节所提到的ZooKeeper 提交所有的条目到一个持久 WAL并周期性的将内存快照写入存储介质。对于使用一致性协议实现一个复制状态机的应用来说使用 WALs 提供持久化是一种常用的技术,对于普通的存储应用也是如此。 如同在 [ZooKeeper 基础](#zookeeper-basics) 一节所提到的ZooKeeper 提交所有的条目到一个持久 WAL并周期性的将内存快照写入存储介质。对于使用一致性协议实现一个复制状态机的应用来说使用 WALs 提供持久化是一种常用的技术,对于普通的存储应用也是如此。
使用 [`kubectl delete`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#delete) 删除 `zk` StatefulSet。 使用 [`kubectl delete`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#delete) 删除 `zk` StatefulSet。
```shell ```shell
kubectl delete statefulset zk kubectl delete statefulset zk
@ -641,7 +641,7 @@ log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} [myid:%X{myid}] - %-
这是在容器里安全记录日志的最简单的方法。由于应用的日志被写入标准输出Kubernetes 将会为你处理日志轮转。Kubernetes 还实现了一个智能保存策略,保证写入标准输出和标准错误流的应用日志不会耗尽本地存储媒介。 这是在容器里安全记录日志的最简单的方法。由于应用的日志被写入标准输出Kubernetes 将会为你处理日志轮转。Kubernetes 还实现了一个智能保存策略,保证写入标准输出和标准错误流的应用日志不会耗尽本地存储媒介。
使用 [`kubectl logs`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#logs) 从一个 Pod 中取回最后几行日志。 使用 [`kubectl logs`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#logs) 从一个 Pod 中取回最后几行日志。
```shell ```shell
kubectl logs zk-0 --tail 20 kubectl logs zk-0 --tail 20
@ -679,7 +679,7 @@ kubectl logs zk-0 --tail 20
### 配置非特权用户 ### 配置非特权用户
在容器中允许应用以特权用户运行这条最佳实践是值得商讨的。如果你的组织要求应用以非特权用户运行,你可以使用 [SecurityContext](zh/docs/tasks/configure-pod-container/security-context/) 控制运行容器入口点的用户。 在容器中允许应用以特权用户运行这条最佳实践是值得商讨的。如果你的组织要求应用以非特权用户运行,你可以使用 [SecurityContext](/zh/docs/tasks/configure-pod-container/security-context/) 控制运行容器入口点的用户。
`zk` StatefulSet 的 Pod 的 `template` 包含了一个 SecurityContext。 `zk` StatefulSet 的 Pod 的 `template` 包含了一个 SecurityContext。
@ -736,7 +736,7 @@ drwxr-sr-x 3 zookeeper zookeeper 4096 Dec 5 20:45 /var/lib/zookeeper/data
### 处理进程故障 ### 处理进程故障
[Restart Policies](zh/docs/user-guide/pod-states/#restartpolicy) 控制 Kubernetes 如何处理一个 Pod 中容器入口点的进程故障。对于 StatefulSet 中的 Pods 来说Always 是唯一合适的 RestartPolicy这也是默认值。你应该**绝不**覆盖 stateful 应用的默认策略。 [Restart Policies](/zh/docs/user-guide/pod-states/#restartpolicy) 控制 Kubernetes 如何处理一个 Pod 中容器入口点的进程故障。对于 StatefulSet 中的 Pods 来说Always 是唯一合适的 RestartPolicy这也是默认值。你应该**绝不**覆盖 stateful 应用的默认策略。
检查 `zk-0` Pod 中运行的 ZooKeeper 服务的进程树。 检查 `zk-0` Pod 中运行的 ZooKeeper 服务的进程树。
@ -947,7 +947,7 @@ kubectl get nodes
``` ```
使用 [`kubectl cordon`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#cordon) cordon 你的集群中除4个节点以外的所有节点。 使用 [`kubectl cordon`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#cordon) cordon 你的集群中除4个节点以外的所有节点。
```shell ```shell
kubectl cordon < node name > kubectl cordon < node name >
@ -987,7 +987,7 @@ kubernetes-minion-group-i4c4
``` ```
使用 [`kubectl drain`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#drain) 来 cordon 和 drain `zk-0` Pod 调度的节点。 使用 [`kubectl drain`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#drain) 来 cordon 和 drain `zk-0` Pod 调度的节点。
```shell ```shell
kubectl drain $(kubectl get pod zk-0 --template {{.spec.nodeName}}) --ignore-daemonsets --force --delete-local-data kubectl drain $(kubectl get pod zk-0 --template {{.spec.nodeName}}) --ignore-daemonsets --force --delete-local-data
@ -1102,7 +1102,7 @@ numChildren = 0
``` ```
使用 [`kubectl uncordon`](zh/docs/user-guide/kubectl/{{< param "version" >}}/#uncordon) 来取消对第一个节点的隔离。 使用 [`kubectl uncordon`](/zh/docs/user-guide/kubectl/{{< param "version" >}}/#uncordon) 来取消对第一个节点的隔离。
```shell ```shell
kubectl uncordon kubernetes-minion-group-pb41 kubectl uncordon kubernetes-minion-group-pb41

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@ -26,21 +26,21 @@ external IP address.
{{% capture prerequisites %}} {{% capture prerequisites %}}
<!-- <!--
* Install [kubectl](zh/docs/tasks/tools/install-kubectl/). * Install [kubectl](/docs/tasks/tools/install-kubectl/).
* Use a cloud provider like Google Kubernetes Engine or Amazon Web Services to * Use a cloud provider like Google Kubernetes Engine or Amazon Web Services to
create a Kubernetes cluster. This tutorial creates an create a Kubernetes cluster. This tutorial creates an
[external load balancer](zh/docs/tasks/access-application-cluster/create-external-load-balancer/), [external load balancer](/docs/tasks/access-application-cluster/create-external-load-balancer/),
which requires a cloud provider. which requires a cloud provider.
* Configure `kubectl` to communicate with your Kubernetes API server. For * Configure `kubectl` to communicate with your Kubernetes API server. For
instructions, see the documentation for your cloud provider. instructions, see the documentation for your cloud provider.
--> -->
* 安装 [kubectl](zh/docs/tasks/tools/install-kubectl/). * 安装 [kubectl](/zh/docs/tasks/tools/install-kubectl/).
* 使用 Google Kubernetes Engine 或 Amazon Web Services 等云供应商创建 Kubernetes 群集。 * 使用 Google Kubernetes Engine 或 Amazon Web Services 等云供应商创建 Kubernetes 群集。
本教程创建了一个[外部负载均衡器](zh/docs/tasks/access-application-cluster/create-external-load-balancer/),需要云供应商。 本教程创建了一个[外部负载均衡器](/zh/docs/tasks/access-application-cluster/create-external-load-balancer/),需要云供应商。
* 配置 `kubectl` 与 Kubernetes API 服务器通信。有关说明,请参阅云供应商文档。 * 配置 `kubectl` 与 Kubernetes API 服务器通信。有关说明,请参阅云供应商文档。
@ -79,16 +79,16 @@ external IP address.
<!-- <!--
The preceding command creates a The preceding command creates a
[Deployment](zh/docs/concepts/workloads/controllers/deployment/) [Deployment](/docs/concepts/workloads/controllers/deployment/)
object and an associated object and an associated
[ReplicaSet](zh/docs/concepts/workloads/controllers/replicaset/) [ReplicaSet](/docs/concepts/workloads/controllers/replicaset/)
object. The ReplicaSet has five object. The ReplicaSet has five
[Pods](zh/docs/concepts/workloads/pods/pod/), [Pods](/docs/concepts/workloads/pods/pod/),
each of which runs the Hello World application. each of which runs the Hello World application.
--> -->
前面的命令创建一个 [Deployment](zh/docs/concepts/workloads/controllers/deployment/) 前面的命令创建一个 [Deployment](/zh/docs/concepts/workloads/controllers/deployment/)
对象和一个关联的 [ReplicaSet](zh/docs/concepts/workloads/controllers/replicaset/)对象。 对象和一个关联的 [ReplicaSet](/zh/docs/concepts/workloads/controllers/replicaset/)对象。
ReplicaSet 有五个 [Pod](zh/docs/concepts/workloads/pods/pod/),每个都运行 Hello World 应用程序。 ReplicaSet 有五个 [Pod](/zh/docs/concepts/workloads/pods/pod/),每个都运行 Hello World 应用程序。
<!-- <!--
1. Display information about the Deployment: 1. Display information about the Deployment:
@ -249,9 +249,9 @@ the Hello World application, enter this command:
<!-- <!--
Learn more about Learn more about
[connecting applications with services](zh/docs/concepts/services-networking/connect-applications-service/). [connecting applications with services](/docs/concepts/services-networking/connect-applications-service/).
--> -->
了解更多关于[将应用程序与服务连接](zh/docs/concepts/services-networking/connect-applications-service/)。 了解更多关于[将应用程序与服务连接](/zh/docs/concepts/services-networking/connect-applications-service/)。
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@ -143,9 +143,9 @@ Replace POD-NAME with the name of your Pod.
### 创建 Redis 主节点的服务 ### 创建 Redis 主节点的服务
<!-- <!--
The guestbook applications needs to communicate to the Redis master to write its data. You need to apply a [Service](zh/docs/concepts/services-networking/service/) to proxy the traffic to the Redis master Pod. A Service defines a policy to access the Pods. The guestbook applications needs to communicate to the Redis master to write its data. You need to apply a [Service](/docs/concepts/services-networking/service/) to proxy the traffic to the Redis master Pod. A Service defines a policy to access the Pods.
--> -->
留言板应用程序需要往 Redis 主节点中写数据。因此,需要创建 [Service](zh/docs/concepts/services-networking/service/) 来代理 Redis 主节点 Pod 的流量。Service 定义了访问 Pod 的策略。 留言板应用程序需要往 Redis 主节点中写数据。因此,需要创建 [Service](/zh/docs/concepts/services-networking/service/) 来代理 Redis 主节点 Pod 的流量。Service 定义了访问 Pod 的策略。
{{< codenew file="application/guestbook/redis-master-service.yaml" >}} {{< codenew file="application/guestbook/redis-master-service.yaml" >}}
@ -349,10 +349,10 @@ The guestbook application has a web frontend serving the HTTP requests written i
### 创建前端服务 ### 创建前端服务
<!-- <!--
The `redis-slave` and `redis-master` Services you applied are only accessible within the container cluster because the default type for a Service is [ClusterIP](zh/docs/concepts/services-networking/service/#publishing-services---service-types). `ClusterIP` provides a single IP address for the set of Pods the Service is pointing to. This IP address is accessible only within the cluster. The `redis-slave` and `redis-master` Services you applied are only accessible within the container cluster because the default type for a Service is [ClusterIP](/docs/concepts/services-networking/service/#publishing-services---service-types). `ClusterIP` provides a single IP address for the set of Pods the Service is pointing to. This IP address is accessible only within the cluster.
--> -->
应用的 `redis-slave``redis-master` 服务只能在容器集群中访问,因为服务的默认类型是 应用的 `redis-slave``redis-master` 服务只能在容器集群中访问,因为服务的默认类型是
[ClusterIP](zh/docs/concepts/Services-networking/Service/#publishingservices-Service-types)。`ClusterIP` 为服务指向的 Pod 集提供一个 IP 地址。这个 IP 地址只能在集群中访问。 [ClusterIP](/zh/docs/concepts/Services-networking/Service/#publishingservices-Service-types)。`ClusterIP` 为服务指向的 Pod 集提供一个 IP 地址。这个 IP 地址只能在集群中访问。
<!-- <!--
If you want guests to be able to access your guestbook, you must configure the frontend Service to be externally visible, so a client can request the Service from outside the container cluster. Minikube can only expose Services through `NodePort`. If you want guests to be able to access your guestbook, you must configure the frontend Service to be externally visible, so a client can request the Service from outside the container cluster. Minikube can only expose Services through `NodePort`.
@ -607,16 +607,16 @@ Deleting the Deployments and Services also deletes any running Pods. Use labels
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<!-- <!--
* Complete the [Kubernetes Basics](zh/docs/tutorials/kubernetes-basics/) Interactive Tutorials * Complete the [Kubernetes Basics](/docs/tutorials/kubernetes-basics/) Interactive Tutorials
* Use Kubernetes to create a blog using [Persistent Volumes for MySQL and Wordpress](zh/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/#visit-your-new-wordpress-blog) * Use Kubernetes to create a blog using [Persistent Volumes for MySQL and Wordpress](/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/#visit-your-new-wordpress-blog)
* Read more about [connecting applications](zh/docs/concepts/services-networking/connect-applications-service/) * Read more about [connecting applications](/docs/concepts/services-networking/connect-applications-service/)
* Read more about [Managing Resources](zh/docs/concepts/cluster-administration/manage-deployment/#using-labels-effectively) * Read more about [Managing Resources](/docs/concepts/cluster-administration/manage-deployment/#using-labels-effectively)
--> -->
* 完成 [Kubernetes Basics](zh/docs/tutorials/kubernetes-basics/) 交互式教程 * 完成 [Kubernetes Basics](/zh/docs/tutorials/kubernetes-basics/) 交互式教程
* 使用 Kubernetes 创建一个博客,使用 [MySQL 和 Wordpress 的持久卷](zh/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/#visit-your-new-wordpress-blog) * 使用 Kubernetes 创建一个博客,使用 [MySQL 和 Wordpress 的持久卷](/zh/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/#visit-your-new-wordpress-blog)
* 阅读更多关于[连接应用程序](zh/docs/concepts/services-networking/connect-applications-service/) * 阅读更多关于[连接应用程序](/zh/docs/concepts/services-networking/connect-applications-service/)
* 阅读更多关于[管理资源](zh/docs/concepts/cluster-administration/manage-deployment/#using-labels-effectively) * 阅读更多关于[管理资源](/zh/docs/concepts/cluster-administration/manage-deployment/#using-labels-effectively)
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