165 lines
4.6 KiB
Markdown
165 lines
4.6 KiB
Markdown
---
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reviewers:
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- eparis
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- pmorie
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title: 使用 ConfigMap 来配置 Redis
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content_template: templates/tutorial
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---
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{{% capture overview %}}
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<!--
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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](/docs/tasks/configure-pod-container/configure-pod-configmap/) task.
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-->
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这篇文档基于[使用 ConfigMap 来配置 Containers](/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。
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{{% /capture %}}
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{{% capture objectives %}}
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<!--
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* * Create a `kustomization.yaml` file containing:
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* a ConfigMap generator
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* a Pod resource config using the ConfigMap
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* Apply the directory by running `kubectl apply -k ./`
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* Verify that the configuration was correctly applied.
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-->
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* * 创建一个包含以下内容的 `kustomization.yaml` 文件：
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* 一个 ConfigMap 生成器
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* 一个使用 ConfigMap 的 Pod 资源配置
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* 使用 `kubectl apply -k ./` 应用整个路径的配置
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* 验证配置已经被正确应用。
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{{% /capture %}}
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{{% capture prerequisites %}}
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* {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
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<!--
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* The example shown on this page works with `kubectl` 1.14 and above.
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* Understand [Configure Containers Using a ConfigMap](/docs/tasks/configure-pod-container/configure-pod-configmap/).
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-->
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* 此页面上显示的示例适用于 `kubectl` 1.14和在其以上的版本。
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* 理解[使用ConfigMap来配置Containers](/docs/tasks/configure-pod-container/configure-pod-configmap/)。
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{{% /capture %}}
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{{% capture lessoncontent %}}
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<!--
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## Real World Example: Configuring Redis using a ConfigMap
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You can follow the steps below to configure a Redis cache using data stored in a ConfigMap.
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First create a `kustomization.yaml` containing a ConfigMap from the `redis-config` file:
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-->
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## 真实世界的案例：使用 ConfigMap 来配置 Redis
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按照下面的步骤，您可以使用ConfigMap中的数据来配置Redis缓存。
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1. 根据`docs/user-guide/configmap/redis/redis-config`来创建一个ConfigMap：
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{{< codenew file="pods/config/redis-config" >}}
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```shell
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curl -OL https://k8s.io/examples/pods/config/redis-config
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cat <<EOF >./kustomization.yaml
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configMapGenerator:
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- name: example-redis-config
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files:
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- redis-config
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EOF
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```
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<!--
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Add the pod resource config to the `kustomization.yaml`:
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-->
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将 pod 的资源配置添加到 `kustomization.yaml` 文件中：
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{{< codenew file="pods/config/redis-pod.yaml" >}}
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```shell
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curl -OL https://raw.githubusercontent.com/kubernetes/website/master/content/en/examples/pods/config/redis-pod.yaml
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cat <<EOF >>./kustomization.yaml
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resources:
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- redis-pod.yaml
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EOF
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```
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<!--
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Apply the kustomization directory to create both the ConfigMap and Pod objects:
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-->
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应用整个 kustomization 文件夹以创建 ConfigMap 和 Pod 对象：
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```shell
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kubectl apply -k .
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```
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<!--
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Examine the created objects by
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-->
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使用以下命令检查创建的对象
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```shell
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> kubectl get -k .
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NAME DATA AGE
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configmap/example-redis-config-dgh9dg555m 1 52s
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NAME READY STATUS RESTARTS AGE
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pod/redis 1/1 Running 0 52s
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```
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<!--
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In the example, the config volume is mounted at `/redis-master`.
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It uses `path` to add the `redis-config` key to a file named `redis.conf`.
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The file path for the redis config, therefore, is `/redis-master/redis.conf`.
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This is where the image will look for the config file for the redis master.
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-->
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在示例中，配置卷挂载在 `/redis-master` 下。
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它使用 `path` 将 `redis-config` 密钥添加到名为 `redis.conf` 的文件中。
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因此，redis配置的文件路径为 `/redis-master/redis.conf`。
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这是镜像将在其中查找 redis master 的配置文件的位置。
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<!--
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Use `kubectl exec` to enter the pod and run the `redis-cli` tool to verify that
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the configuration was correctly applied:
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-->
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使用 `kubectl exec` 进入 pod 并运行 `redis-cli` 工具来验证配置已正确应用：
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```shell
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kubectl exec -it redis redis-cli
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127.0.0.1:6379> CONFIG GET maxmemory
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1) "maxmemory"
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2) "2097152"
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127.0.0.1:6379> CONFIG GET maxmemory-policy
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1) "maxmemory-policy"
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2) "allkeys-lru"
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```
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<!--
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Delete the created pod:
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-->
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删除创建的 pod：
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```shell
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kubectl delete pod redis
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```
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{{% /capture %}}
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{{% capture whatsnext %}}
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<!--
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* Learn more about [ConfigMaps](/docs/tasks/configure-pod-container/configure-pod-configmap/).
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-->
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* 了解有关 [ConfigMaps](/docs/tasks/configure-pod-container/configure-pod-configmap/)的更多信息。
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{{% /capture %}}
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