Update localization guidelines (#10485)
* Update localization guidelines for language labels
Continuing work
Continuing work
Continuing work
More work in progress
Add local OWNERS folders
Add an OWNERS file to Chinese
Remove shortcode for repos
Add Japanese
Alphabetize languages, change weights accordingly
More updates
Add Korean in Korean
Add English to languageName
Feedback from gochist
Move Chinese content from cn/ to zh/
Move OWNERS from cn/ to zh/
Resolve merge conflicts by updating from master
Add files back in to prep for resolution
After rebase on upstream/master, remove files
Review and update localization guidelines
Feedback from gochist, tnir, cstoku
Add a trailing newline to content/ja/OWNERS
Add a trailing newline to content/zh/OWNERS
Drop requirement for GH repo project
Clarify language about forks/branches
Edits and typos
Remove a shortcode specific to a multi-repo language setup
Update aliases and owners
Add explicit OWNERS for content/en
Migrate content from Chinese repo, update regex in config.toml
Remove untranslated strings
Add trailing newline to content/en/OWNERS
Add trailing newlines to OWNERS files
add Jaguar project description (#10433)
* add Jaguar project description
[Jaguar](https://gitlab.com/sdnlab/jaguar) is an open source solution for Kubernetes's network based on OpenDaylight.
Jaguar provides overlay network using vxlan and Jaguar CNIPlugin provides one IP address per pod.
* Minor newline tweak
blog post for azure vmss (#10538)
Add microk8s to pick-right-solution.md (#10542)
* Add microk8s to pick-right-solution.md
Microk8s is a single-command installation of upstream Kubernetes on any Linux and should be included in the list of local-machine solutions.
* capitalized Istio
Add microk8s to foundational.md (#10543)
* Add microk8s to foundational.md
Adding microk8s as credible and stable alternative to get started with Kubernetes on a local machine. This is especially attractive for those not wanting to incur the overhead of running a VM for a local cluster.
* Update foundational.md
Thank you for your suggestions! LMK if this works now?
* Rewrote first paragraph
And included a bullet list of features of microk8s
* Copyedit
fix typo (#10545)
Fix the kubectl subcommands links. (#10550)
Signed-off-by: William Zhang <warmchang@outlook.com>
Fix command issue (#10515)
Signed-off-by: mooncake <xcoder@tenxcloud.com>
remove imported community files per issue 10184 (#10501)
networking.md: Markdown fix (#10498)
Fix front matter, federation command-line tools (#10500)
Clean up glossary entry (#10399)
update slack link (#10536)
typo in StatefulSet docs (#10558)
fix discription about horizontal pod autoscale (#10557)
Remove redundant symbols (#10556)
Fix issue #10520 (#10554)
Signed-off-by: William Zhang <warmchang@outlook.com>
Update api-concepts.md (#10534)
Revert "Fix command issue (#10515)"
This reverts commit c02a7fb9f9.
Update memory-constraint-namespace.md (#10530)
update memory request to 100MiB corresponding the yaml content
Blog: Introducing Volume Snapshot Alpha for Kubernetes (#10562)
* blog post for azure vmss
* snapshot blog post
Resolve merge conflicts in OWNERS*
Minor typo fix (#10567)
Not sure what's supposed to be here, proposing removing it.
* Feedback from gochist
Tweaks to feedback
* Feedback from ClaudiaJKang
This commit is contained in:
Zach Corleissen
committed by
k8s-ci-robot
k8s-ci-robot
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approvers:
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- jessfraz
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title: Pod Preset
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content_template: templates/concept
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---
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{{% capture overview %}}
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本文提供了 PodPreset 的概述。 在 pod 创建时，用户可以使用 `podpreset` 对象将特定信息注入
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pod 中，这些信息可以包括 secret、 卷、卷挂载和环境变量。
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{{% /capture %}}
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{{< toc >}}
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{{% capture body %}}
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## 理解 Pod Preset
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`Pod Preset` 是一种 API 资源，在 pod 创建时，用户可以用它将额外的运行时需求信息注入 pod。
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使用[标签选择器（label selector）](/docs/concepts/overview/working-with-objects/labels/#label-selectors)来指定 Pod Preset 所适用的 pod。
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使用 Pod Preset 使得 pod 模板编写者不必显式地为每个 pod 设置信息。
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这样，使用特定服务的 pod 模板编写者不需要了解该服务的所有细节。
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了解更多的相关背景信息，请参考 [ PodPreset 设计提案](https://git.k8s.io/community/contributors/design-proposals/service-catalog/pod-preset.md)。
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## PodPreset 如何工作
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Kubernetes 提供了准入控制器 (`PodPreset`)，该控制器被启用时，会将 Pod Preset
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应用于接收到的 pod 创建请求中。
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当出现 pod 创建请求时，系统会执行以下操作：
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1. 检索所有可用 `PodPresets` 。
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1. 检查 `PodPreset` 的标签选择器与要创建的 pod 的标签是否匹配。
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1. 尝试合并 `PodPreset` 中定义的各种资源，并注入要创建的 pod。
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1. 发生错误时抛出事件，该事件记录了 pod 信息合并错误，同时在 _不注入_ `PodPreset` 信息的情况下创建 pod。
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1. 为改动的 pod spec 添加注解，来表明它被 `PodPreset` 所修改。 注解形如：
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`podpreset.admission.kubernetes.io/podpreset-<pod-preset name>": "<resource version>"`。
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一个 Pod 可能不与任何 Pod Preset 匹配，也可能匹配多个 Pod Preset。 同时，一个 `PodPreset`
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可能不应用于任何 Pod，也可能应用于多个 Pod。 当 `PodPreset` 应用于一个或多个 Pod 时，Kubernetes
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修改 pod spec。 对于 `Env`、 `EnvFrom` 和 `VolumeMounts` 的改动， Kubernetes 修改 pod
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中所有容器的规格，对于卷的改动，Kubernetes 修改 Pod spec。
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{{< note >}}
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**注意：** Pod Preset 能够在适当的时候修改 Pod spec 的 `spec.containers` 字段，
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但是不会应用于 `initContainers` 字段。
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{{< /note >}}
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### 为特定 Pod 禁用 Pod Preset
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在一些情况下，用户不希望 pod 被 pod preset 所改动，这时，用户可以在 pod spec 中添加形如
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`podpreset.admission.kubernetes.io/exclude: "true"` 的注解。
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## 启用 Pod Preset
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为了在集群中使用 Pod Preset，必须确保以下几点：
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1. 已启用 api 类型 `settings.k8s.io/v1alpha1/podpreset`。 这可以通过在 API 服务器的
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`--runtime-config` 配置项中包含 `settings.k8s.io/v1alpha1=true` 来实现。
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1. 已启用准入控制器 `PodPreset`。 启用的一种方式是在 API 服务器的 `--admission-control`
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配置项中包含 `PodPreset` 。
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1. 已经通过在相应的名字空间中创建 `PodPreset` 对象，定义了 Pod preset。
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{{% /capture %}}
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{{% capture whatsnext %}}
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* [使用 PodPreset 将信息注入 Pods](/docs/tasks/inject-data-application/podpreset/)
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{{% /capture %}}
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