# kubectl diff

> 将实际版本与拟应用的版本进行比较

---

LLMS index: [llms.txt](/llms.txt)

---

<!--
title: kubectl diff
content_type: tool-reference
weight: 30
auto_generated: true
no_list: true
description: >-
  Diff the live version against a would-be applied version
-->

## 简介

<!--
Diff configurations specified by file name or stdin between the current online configuration, and the configuration as it would be if applied.

 The output is always YAML.

 KUBECTL_EXTERNAL_DIFF environment variable can be used to select your own diff command. Users can use external commands with params too, example: KUBECTL_EXTERNAL_DIFF="colordiff -N -u"
-->
对比当前在线配置与通过文件名或标准输入所指定的配置之间的差异，并显示如果应用配置后将会如何变化。

输出始终是 YAML。

`KUBECTL_EXTERNAL_DIFF` 环境变量可用于选择你自己的 diff 命令。
用户也可以使用带参数的外部命令，例如：

```env
KUBECTL_EXTERNAL_DIFF="colordiff -N -u"
```

<!--
By default, the "diff" command available in your path will be run with the "-u" (unified diff) and "-N" (treat absent files as empty) options.

 Exit status: 0 No differences were found. 1 Differences were found. &gt;1 Kubectl or diff failed with an error.

 Note: KUBECTL_EXTERNAL_DIFF, if used, is expected to follow that convention.
-->
默认情况下，路径中可用的 "diff" 命令在运行时会附带 "-u"（统一差异）和 "-N"（将缺失的文件视为空）选项。

退出状态：0 表示未发现差异。1 表示发现差异。>1 表示 kubectl 或 diff 发生错误。

注意：如果使用 `KUBECTL_EXTERNAL_DIFF`，则需要遵循该约定。

```shell
kubectl diff -f FILENAME
```

## 示例

<!--
```
# Diff resources included in pod.json
kubectl diff -f pod.json

# Diff file read from stdin
cat service.yaml | kubectl diff -f -
```
-->
```shell
# 对比 pod.json 中包含的资源
kubectl diff -f pod.json

# 对比从标准输入读取到的文件
cat service.yaml | kubectl diff -f -
```

## 选项

<table style="width: 100%; table-layout: fixed;">
<colgroup>
<col span="1" style="width: 10px;" />
<col span="1" />
</colgroup>
<tbody>

<tr>
<td colspan="2">--concurrency int&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值：1</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Number of objects to process in parallel when diffing against the live version. Larger number = faster, but more memory, I/O and CPU over that shorter period of time.
-->
在与当前版本进行差异比较时并行处理的对象的数量。
数量越多，速度越快，但在短时间内会消耗更多的内存、I/O 和 CPU 等资源。
</p>
</td>
</tr>

<tr>
<td colspan="2">--field-manager string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："kubectl-client-side-apply"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Name of the manager used to track field ownership.
-->
用于跟踪字段属主关系的管理器的名称。
</p>
</td>
</tr>

<tr>
<td colspan="2">-f, --filename strings</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Filename, directory, or URL to files contains the configuration to diff
-->
包含 diff 操作所用配置的文件名、目录或指向文件的 URL。
</p>
</td>
</tr>

<tr>
<td colspan="2">--force-conflicts</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
If true, server-side apply will force the changes against conflicts.
-->
如果为 true，服务器端应用将基于冲突强制进行更改。
</p>
</td>
</tr>

<tr>
<td colspan="2">-h, --help</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
help for diff
-->
diff 操作的帮助命令。
</p>
</td>
</tr>

<tr>
<td colspan="2">-k, --kustomize string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Process the kustomization directory. This flag can't be used together with -f or -R.
-->
处理 kustomization 目录。此标志不能与 -f 或 -R 一起使用。
</p>
</td>
</tr>

<tr>
<td colspan="2">--prune</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Include resources that would be deleted by pruning. Can be used with -l and default shows all resources would be pruned
-->
包含将通过裁剪操作被删除的资源。可以与 -l 一起使用，默认显示所有将被裁剪的资源。
</p>
</td>
</tr>

<tr>
<td colspan="2">--prune-allowlist strings</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Overwrite the default allowlist with &lt;group/version/kind&gt; for --prune
-->
使用 &lt;group/version/kind&gt; 覆写默认的允许列表以执行 --prune 操作。
</p>
</td>
</tr>

<tr>
<td colspan="2">-R, --recursive</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Process the directory used in -f, --filename recursively. Useful when you want to manage related manifests organized within the same directory.
-->
以递归方式处理以 -f 或 --filename 指定的目录。当你希望管理在同一目录中组织的相关清单时，这很有用。
</p>
</td>
</tr>

<tr>
<td colspan="2">-l, --selector string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Selector (label query) to filter on, supports '=', '==', '!=', 'in', 'notin'.(e.g. -l key1=value1,key2=value2,key3 in (value3)). Matching objects must satisfy all of the specified label constraints.
-->
过滤所用的选择算符（标签查询），支持 '='、'=='、'!='、'in' 和 'notin'。
（例如 <code>-l key1=value1,key2=value2,key3 in (value3)</code>）。
匹配的对象必须满足所有指定的标签约束。
</p>
</td>
</tr>

<tr>
<td colspan="2">--server-side</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
If true, apply runs in the server instead of the client.
-->
如果为 true，应用操作将在服务器上运行，而不是在客户端运行。
</p>
</td>
</tr>

<tr>
<td colspan="2">--show-managed-fields</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
If true, include managed fields in the diff.
-->
如果为 true，则在 diff 中包含托管的字段。
</p>
</td>
</tr>

<tr>
<td colspan="2">--show-secrets</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
If true, do not mask secret values in the diff.
-->
如果为 true ，则不要在 diff 中屏蔽 Secret 值。
</p>
</td>
</tr>

</tbody>
</table>

## 继承于父命令的选项

<table style="width: 100%; table-layout: fixed;">
<colgroup>
<col span="1" style="width: 10px;" />
<col span="1" />
</colgroup>
<tbody>

<tr>
<td colspan="2">--as string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Username to impersonate for the operation. User could be a regular user or a service account in a namespace.
-->
操作所用的伪装用户名。用户可以是常规用户或命名空间中的服务账号。
</p>
</td>
</tr>

<tr>
<td colspan="2">--as-group strings</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Group to impersonate for the operation, this flag can be repeated to specify multiple groups.
-->
操作所用的伪装用户组，此标志可以被重复设置以指定多个组。
</p>
</td>
</tr>

<tr>
<td colspan="2">--as-uid string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
UID to impersonate for the operation.
-->
操作所用的伪装 UID。
</p></td>
</tr>

<tr>
<td colspan="2">--as-user-extra strings</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--  
User extras to impersonate for the operation, this flag can be repeated to specify multiple values for the same key.
--> 
用户额外信息，用于伪装操作，此标志可以重复使用，为同一个键指定多个值。
</p>
</td>
</tr>

<tr>
<td colspan="2">--cache-dir string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："$HOME/.kube/cache"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Default cache directory
-->
默认缓存目录。
</p></td>
</tr>

<tr>
<td colspan="2">--certificate-authority string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Path to a cert file for the certificate authority
-->
证书机构的证书文件的路径。
</p>
</td>
</tr>

<tr>
<td colspan="2">--client-certificate string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Path to a client certificate file for TLS
-->
TLS 客户端证书文件的路径。
</p>
</td>
</tr>

<tr>
<td colspan="2">--client-key string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Path to a client key file for TLS
-->
TLS 客户端密钥文件的路径。
</p>
</td>
</tr>

<tr>
<td colspan="2">--cluster string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
The name of the kubeconfig cluster to use
-->
要使用的 kubeconfig 中的集群名称。
</p>
</td>
</tr>

<tr>
<td colspan="2">--context string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
The name of the kubeconfig context to use
-->
要使用的 kubeconfig 上下文的名称。
</p>
</td>
</tr>

<tr>
<td colspan="2">--disable-compression</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
If true, opt-out of response compression for all requests to the server
-->
如果为 true，则对服务器所有请求的响应不再压缩。
</p>
</td>
</tr>

<tr>
<td colspan="2">--insecure-skip-tls-verify</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure
-->
如果为 true，则不检查服务器证书的有效性。这将使你的 HTTPS 连接不安全。
</p>
</td>
</tr>

<tr>
<td colspan="2">--kubeconfig string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Path to the kubeconfig file to use for CLI requests.
-->
CLI 请求要使用的 kubeconfig 文件的路径。
</p>
</td>
</tr>

<tr>
<td colspan="2">--kuberc string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Path to the kuberc file to use for preferences. This can be disabled by exporting KUBECTL_KUBERC=false feature gate or turning off the feature KUBERC=off.
-->
用于偏好设置的 kuberc 文件的路径。可以通过导出 KUBECTL_KUBERC=false
特性门控或关闭 KUBERC=off 特性门控来禁用此功能。
</p>
</td>
</tr>

<tr>
<td colspan="2">--match-server-version</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Require server version to match client version
-->
要求服务器版本与客户端版本匹配。
</p>
</td>
</tr>

<tr>
<td colspan="2">-n, --namespace string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
If present, the namespace scope for this CLI request
-->
如果存在，则是此 CLI 请求的命名空间范围。
</p>
</td>
</tr>

<tr>
<td colspan="2">--password string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Password for basic authentication to the API server
-->
向 API 服务器进行基本身份认证所用的密码。
</p>
</td>
</tr>

<tr>
<td colspan="2">--profile string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："none"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Name of profile to capture. One of (none|cpu|heap|goroutine|threadcreate|block|mutex|trace)
-->
要记录的性能分析信息。可选值为（none|cpu|heap|goroutine|threadcreate|block|mutex|trace）。
</p>
</td>
</tr>

<tr>
<td colspan="2">--profile-output string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："profile.pprof"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Name of the file to write the profile to
-->
性能分析信息要写入的目标文件的名称。
</p>
</td>
</tr>

<tr>
<td colspan="2">--request-timeout string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："0"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
The length of time to wait before giving up on a single server request. Non-zero values should contain a corresponding time unit (e.g. 1s, 2m, 3h). A value of zero means don't timeout requests.
-->
在放弃某个服务器请求之前等待的时长。非零值应包含相应的时间单位（例如 1s、2m、3h）。
值为零表示请求不会超时。
</p>
</td>
</tr>

<tr>
<td colspan="2">-s, --server string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
The address and port of the Kubernetes API server
-->
Kubernetes API 服务器的地址和端口。
</p>
</td>
</tr>

<tr>
<td colspan="2">--storage-driver-buffer-duration duration&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值：1m0s</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Writes in the storage driver will be buffered for this duration, and committed to the non memory backends as a single transaction
-->
对存储驱动的写入操作将被缓存的时长；缓存的操作会作为一个事务提交给非内存后端。
</p>
</td>
</tr>

<tr>
<td colspan="2">--storage-driver-db string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："cadvisor"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
database name
-->
数据库名称。
</p>
</td>
</tr>

<tr>
<td colspan="2">--storage-driver-host string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："localhost:8086"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
database host:port
-->
数据库 host:port
</p>
</td>
</tr>

<tr>
<td colspan="2">--storage-driver-password string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："root"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
database password
-->
数据库密码。
</p>
</td>
</tr>

<tr>
<td colspan="2">--storage-driver-secure</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
use secure connection with database
-->
使用与数据库的安全连接。
</p>
</td>
</tr>

<tr>
<td colspan="2">--storage-driver-table string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："stats"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
table name
-->
表名。
</p>
</td>
</tr>

<tr>
<td colspan="2">--storage-driver-user string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<!--Default:-->默认值："root"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
database username
-->
数据库用户名。
</p>
</td>
</tr>

<tr>
<td colspan="2">--tls-server-name string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Server name to use for server certificate validation. If it is not provided, the hostname used to contact the server is used
-->
服务器证书验证所用的服务器名称。如果未提供，则使用与服务器通信所用的主机名。
</p>
</td>
</tr>

<tr>
<td colspan="2">--token string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Bearer token for authentication to the API server
-->
向 API 服务器进行身份认证的持有者令牌。
</p>
</td>
</tr>

<tr>
<td colspan="2">--user string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
The name of the kubeconfig user to use
-->
要使用的 kubeconfig 用户的名称。
</p>
</td>
</tr>

<tr>
<td colspan="2">--username string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Username for basic authentication to the API server
-->
向 API 服务器进行基本身份认证时所用的用户名。
</p>
</td>
</tr>

<tr>
<td colspan="2">--version version[=true]</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
--version, --version=raw prints version information and quits; --version=vX.Y.Z... sets the reported version
-->
--version, --version=raw 打印版本信息并退出；--version=vX.Y.Z... 设置报告的版本。
</p>
</td>
</tr>

<tr>
<td colspan="2">--warnings-as-errors</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;">
<p>
<!--
Treat warnings received from the server as errors and exit with a non-zero exit code
-->
将从服务器收到的警告视为错误，并以非零退出码退出。
</p>
</td>
</tr>

</tbody>
</table>

## 另请参见

<!--
* [kubectl](../kubectl/)	 - kubectl controls the Kubernetes cluster manager
-->
* [kubectl](../kubectl/) - kubectl 控制 Kubernetes 集群管理器
