Qiming
9bf026e951
There are many YAML manifests sneaking into the `zh/docs/` directory. These files should go to the `zh/examples` directory instead. Having these "garbage" files (not referenced anywhere) is creating confusion for the release meister when merging branches. For example, some YAML files found in the 'master' branch are no longer there in the release-1.16 branch. It is tedious, if possible at all, to solve all this kind of conflicts during a rebase. The PR cleanses the zh/docs directory for all dangling YAML files.
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2.1 KiB
title, content_template
| title | content_template |
|---|---|
| 为容器设置环境变量 | templates/task |
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本页将展示如何为kubernetes Pod下的容器设置环境变量。
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{{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
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为容器设置一个环境变量
创建Pod时，可以为其下的容器设置环境变量。通过配置文件的env或者envFrom 字段来设置环境变量。
本示例中，将创建一个只包含单个容器的Pod。Pod的配置文件中设置环境变量的名称为DEMO_GREETING，
其值为"Hello from the environment"。下面是Pod的配置文件内容:
{{< codenew file="pods/inject/envars.yaml" >}}
-
基于YAML文件创建一个Pod:
kubectl apply -f https://k8s.io/examples/pods/inject/envars.yaml -
获取一下当前正在运行的Pods信息:
kubectl get pods -l purpose=demonstrate-envars查询结果应为:
NAME READY STATUS RESTARTS AGE envar-demo 1/1 Running 0 9s -
进入该Pod下的容器并打开一个命令终端:
kubectl exec -it envar-demo -- /bin/bash -
在命令终端中通过执行
printenv打印出环境变量。root@envar-demo:/# printenv打印结果应为:
NODE_VERSION=4.4.2 EXAMPLE_SERVICE_PORT_8080_TCP_ADDR=10.3.245.237 HOSTNAME=envar-demo ... DEMO_GREETING=Hello from the environment -
通过键入
exit退出命令终端。
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- 有关环境变量的更多信息，请参阅这里。
- 有关如何通过环境变量来使用Secret，请参阅这里。
- 关于[EnvVarSource](/docs/api-reference/{{< param "version" >}}/#envvarsource-v1-core)资源的信息。
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