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+---
+content_type: "reference"
+title: kubelet 配置目录合并
+weight: 50
+---
+<!--
+content_type: "reference"
+title: Kubelet Configuration Directory Merging
+weight: 50
+-->
+
+<!--
+When using the kubelet's `--config-dir` flag to specify a drop-in directory for
+configuration, there is some specific behavior on how different types are
+merged.
+
+Here are some examples of how different data types behave during configuration merging:
+-->
+当使用 kubelet 的 `--config-dir` 标志来指定存放配置的目录时，不同类型的配置会有一些特定的行为。
+
+以下是在配置合并过程中不同数据类型的一些行为示例：
+
+<!--
+### Structure Fields
+
+There are two types of structure fields in a YAML structure: singular (or a
+scalar type) and embedded (structures that contain scalar types).
+The configuration merging process handles the overriding of singular and embedded struct fields to create a resulting kubelet configuration.
+-->
+### 结构字段 {#structure-fields}
+
+在 YAML 结构中有两种结构字段：独立（标量类型）和嵌入式（此结构包含标量类型）。
+配置合并过程将处理独立构造字段和嵌入式构造字段的重载，以创建最终的 kubelet 配置。
+
+<!--
+For instance, you may want a baseline kubelet configuration for all nodes, but you may want to customize the `address` and `authorization` fields.
+This can be done as follows:
+
+Main kubelet configuration file contents:
+-->
+例如，你可能想要为所有节点设置一个基准 kubelet 配置，但希望自定义 `address` 和 `authorization` 字段。
+这种情况下，你可以按以下方式完成：
+
+kubelet 主配置文件内容：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+port: 20250
+authorization:
+ mode: Webhook
+ webhook:
+ cacheAuthorizedTTL: "5m"
+ cacheUnauthorizedTTL: "30s"
+serializeImagePulls: false
+address: "192.168.0.1"
+```
+
+<!--
+Contents of a file in `--config-dir` directory:
+-->
+`--config-dir` 目录中文件的内容：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+authorization:
+ mode: AlwaysAllow
+ webhook:
+ cacheAuthorizedTTL: "8m"
+ cacheUnauthorizedTTL: "45s"
+address: "192.168.0.8"
+```
+
+<!--
+The resulting configuration will be as follows:
+-->
+生成的配置如下所示：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+port: 20250
+serializeImagePulls: false
+authorization:
+ mode: AlwaysAllow
+ webhook:
+ cacheAuthorizedTTL: "8m"
+ cacheUnauthorizedTTL: "45s"
+address: "192.168.0.8"
+```
+
+<!--
+### Lists
+You can overide the slices/lists values of the kubelet configuration.
+However, the entire list gets overridden during the merging process.
+For example, you can override the `clusterDNS` list as follows:
+
+Main kubelet configuration file contents:
+-->
+### 列表 {#lists}
+
+你可以重载 kubelet 配置的切片/列表值。
+但在合并过程中整个列表将被重载。
+例如，你可以按以下方式重载 `clusterDNS` 列表：
+
+kubelet 主配置文件的内容：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+port: 20250
+serializeImagePulls: false
+clusterDNS:
+ - "192.168.0.9"
+ - "192.168.0.8"
+```
+
+<!--
+Contents of a file in `--config-dir` directory:
+-->
+`--config-dir` 目录中文件的内容：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+clusterDNS:
+ - "192.168.0.2"
+ - "192.168.0.3"
+ - "192.168.0.5"
+```
+
+<!--
+The resulting configuration will be as follows:
+-->
+生成的配置如下所示：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+port: 20250
+serializeImagePulls: false
+clusterDNS:
+ - "192.168.0.2"
+ - "192.168.0.3"
+ - "192.168.0.5"
+```
+
+<!--
+### Maps, including Nested Structures
+
+Individual fields in maps, regardless of their value types (boolean, string, etc.), can be selectively overridden.
+However, for `map[string][]string`, the entire list associated with a specific field gets overridden.
+Let's understand this better with an example, particularly on fields like `featureGates` and `staticPodURLHeader`:
+
+Main kubelet configuration file contents:
+-->
+### 含嵌套结构的映射 {#maps-including-nested-structures}
+
+映射中的各个字段（无论其值类型是布尔值、字符串等）都可以被选择性地重载。
+但对于 `map[string][]string` 类型来说，与特定字段关联的整个列表都将被重载。
+让我们通过一个例子更好地理解这一点，特别是 `featureGates` 和 `staticPodURLHeader` 这类字段：
+
+kubelet 主配置文件的内容：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+port: 20250
+serializeImagePulls: false
+featureGates:
+ AllAlpha: false
+ MemoryQoS: true
+staticPodURLHeader:
+ kubelet-api-support:
+ - "Authorization: 234APSDFA"
+ - "X-Custom-Header: 123"
+ custom-static-pod:
+ - "Authorization: 223EWRWER"
+ - "X-Custom-Header: 456"
+```
+
+<!--
+Contents of a file in `--config-dir` directory:
+-->
+`--config-dir` 目录中文件的内容：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+featureGates:
+ MemoryQoS: false
+ KubeletTracing: true
+ DynamicResourceAllocation: true
+staticPodURLHeader:
+ custom-static-pod:
+ - "Authorization: 223EWRWER"
+ - "X-Custom-Header: 345"
+```
+
+<!--
+The resulting configuration will be as follows:
+-->
+生成的配置如下所示：
+
+```yaml
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+port: 20250
+serializeImagePulls: false
+featureGates:
+ AllAlpha: false
+ MemoryQoS: false
+ KubeletTracing: true
+ DynamicResourceAllocation: true
+staticPodURLHeader:
+ kubelet-api-support:
+ - "Authorization: 234APSDFA"
+ - "X-Custom-Header: 123"
+ custom-static-pod:
+ - "Authorization: 223EWRWER"
+ - "X-Custom-Header: 345"
+```