howieyuen
130 lines
5.0 KiB
Markdown
130 lines
5.0 KiB
Markdown
---
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title: 通过配置文件设置 Kubelet 参数
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content_type: task
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---
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<!--
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reviewers:
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- mtaufen
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- dawnchen
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title: Set Kubelet parameters via a config file
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content_type: task
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--->
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<!-- overview -->
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<!--
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A subset of the Kubelet's configuration parameters may be
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set via an on-disk config file, as a substitute for command-line flags.
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--->
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通过保存在硬盘的配置文件设置 kubelet 的部分配置参数，这可以作为命令行参数的替代。
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Providing parameters via a config file is the recommended approach because
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it simplifies node deployment and configuration management.
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--->
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建议通过配置文件的方式提供参数，因为这样可以简化节点部署和配置管理。
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<!-- steps -->
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<!--
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## Create the config file
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The subset of the Kubelet's configuration that can be configured via a file
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is defined by the
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[`KubeletConfiguration`](/docs/reference/config-api/kubelet-config.v1beta1/)
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struct.
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-->
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## 创建配置文件
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[`KubeletConfiguration`](/zh-cn/docs/reference/config-api/kubelet-config.v1beta1/) 结构体定义了可以通过文件配置的 Kubelet 配置子集，
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The configuration file must be a JSON or YAML representation of the parameters
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in this struct. Make sure the Kubelet has read permissions on the file.
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Here is an example of what this file might look like:
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-->
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配置文件必须是这个结构体中参数的 JSON 或 YAML 表现形式。
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确保 kubelet 可以读取该文件。
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下面是一个 Kubelet 配置文件示例：
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```
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apiVersion: kubelet.config.k8s.io/v1beta1
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kind: KubeletConfiguration
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address: "192.168.0.8",
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port: 20250,
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serializeImagePulls: false,
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evictionHard:
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memory.available: "200Mi"
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```
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<!--
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In the example, the Kubelet is configured to serve on IP address 192.168.0.8 and port 20250, pull images in parallel,
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and evict Pods when available memory drops below 200Mi.
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All other Kubelet configuration values are left at their built-in defaults, unless overridden
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by flags. Command line flags which target the same value as a config file will override that value.
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-->
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在这个示例中, Kubelet 被设置为在地址 192.168.0.8 端口 20250 上提供服务，以并行方式拖拽镜像，
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当可用内存低于 200Mi 时, kubelet 将会开始驱逐 Pods。
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没有声明的其余配置项都将使用默认值，除非使用命令行参数来重载。
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命令行中的参数将会覆盖配置文件中的对应值。
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<!--
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## Start a Kubelet process configured via the config file
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{{< note >}}
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If you use kubeadm to initialize your cluster, use the kubelet-config while creating your cluster with `kubeadmin init`.
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See [configuring kubelet using kubeadm](/docs/setup/production-environment/tools/kubeadm/kubelet-integration/) for details.
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{{< /note >}}
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Start the Kubelet with the `--config` flag set to the path of the Kubelet's config file.
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The Kubelet will then load its config from this file.
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--->
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## 启动通过配置文件配置的 Kubelet 进程
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{{< note >}}
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如果你使用 kubeadm 初始化你的集群，在使用 `kubeadmin init` 创建你的集群的时候请使用 kubelet-config。
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更多细节请阅读[使用 kubeadm 配置 kubelet](/zh-cn/docs/setup/production-environment/tools/kubeadm/kubelet-integration/)
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{{< /note >}}
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启动 Kubelet 需要将 `--config` 参数设置为 Kubelet 配置文件的路径。Kubelet 将从此文件加载其配置。
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<!--
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Note that command line flags which target the same value as a config file will override that value.
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This helps ensure backwards compatibility with the command-line API.
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-->
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请注意，命令行参数与配置文件有相同的值时，就会覆盖配置文件中的该值。
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这有助于确保命令行 API 的向后兼容性。
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<!--
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Note that relative file paths in the Kubelet config file are resolved relative to the
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location of the Kubelet config file, whereas relative paths in command line flags are resolved
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relative to the Kubelet's current working directory.
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-->
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请注意，kubelet 配置文件中的相对文件路径是相对于 kubelet 配置文件的位置解析的，
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而命令行参数中的相对路径是相对于 kubelet 的当前工作目录解析的。
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<!--
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Note that some default values differ between command-line flags and the Kubelet config file.
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If `--config` is provided and the values are not specified via the command line, the
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defaults for the `KubeletConfiguration` version apply.
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In the above example, this version is `kubelet.config.k8s.io/v1beta1`.
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--->
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请注意，命令行参数和 Kubelet 配置文件的某些默认值不同。
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如果设置了 `--config`，并且没有通过命令行指定值，则 `KubeletConfiguration`
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版本的默认值生效。在上面的例子中，version 是 `kubelet.config.k8s.io/v1beta1`。
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<!-- discussion -->
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## {{% heading "whatsnext" %}}
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<!--
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- Learn more about kubelet configuration by checking the
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[`KubeletConfiguration`](/docs/reference/config-api/kubelet-config.v1beta1/)
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reference.
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--->
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- 参阅 [`KubeletConfiguration`](/zh-cn/docs/reference/config-api/kubelet-config.v1beta1/)
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进一步学习 kubelet 的配置。
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