无法通过sed更新K8s清单文件

Question

我有如下的YAML文件：

apiVersion: v1
items:
- apiVersion: v1
  kind: ServiceAccount
  metadata:
    creationTimestamp: 2019-03-20T23:17:42Z
    name: default
    namespace: dev4
    resourceVersion: "80999"
    selfLink: /api/v1/namespaces/dev4/serviceaccounts/default
    uid: 5c6e0d09-4b66-11e9-b4e3-0a779a87bb40
  secrets:
  - name: default-token-tl4dd
- apiVersion: v1
  kind: ServiceAccount
  metadata:
    annotations:
      kubectl.kubernetes.io/last-applied-configuration: |
        {"apiVersion":"v1","kind":"ServiceAccount","metadata":{"annotations":{},"name":"pod-labeler","namespace":"dev4"}}
    creationTimestamp: 2020-04-21T05:46:25Z
    name: pod-labeler
    namespace: dev4
    resourceVersion: "113455688"
    selfLink: /api/v1/namespaces/dev4/serviceaccounts/pod-labeler
    uid: 702dadda-8393-11ea-abd9-0a768ca51346
  secrets:
  - name: pod-labeler-token-6vgp7
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""

我正在使用sed更新要应用于集群的文件，我的sed命令如下：

sed -i \'/uid: \\|selfLink: \\|resourceVersion: \\|creationTimestamp: /d\' test1-serviceaccounts.yaml

但是，我得到的YAML文件如下所示：

apiVersion: v1
items:
- apiVersion: v1
  kind: ServiceAccount
  metadata:
    name: default
    namespace: dev4
  secrets:
  - name: default-token-tl4dd
- apiVersion: v1
  kind: ServiceAccount
  metadata:
    annotations:
      kubectl.kubernetes.io/last-applied-configuration: |
        {"apiVersion":"v1","kind":"ServiceAccount","metadata":{"annotations":{},"name":"pod-labeler","namespace":"dev4"}}
    name: pod-labeler
    namespace: dev4
  secrets:
  - name: pod-labeler-token-6vgp7
kind: List
metadata:

我应该如何修改我的sed表达式来去掉最后一行metadata:

注意:它应该删除最后一行。

我确实尝试了下面的sed命令，但它产生了一个错误：

已更新sed命令：

sed -i '/uid: \|selfLink: \|resourceVersion: \|creationTimestamp: /$ d' 128-res-test-black-dev4-serviceaccounts.yaml

执行上述命令时出错：

sed: -e expression #1, char 60: unknown command: `$'

目标文件应如下所示：

apiVersion: v1
items:
- apiVersion: v1
  kind: ServiceAccount
  metadata:
    name: default
    namespace: dev4
  secrets:
  - name: default-token-tl4dd
- apiVersion: v1
  kind: ServiceAccount
  metadata:
    annotations:
      kubectl.kubernetes.io/last-applied-configuration: |
        {"apiVersion":"v1","kind":"ServiceAccount","metadata":{"annotations":{},"name":"pod-labeler","namespace":"dev4"}}
    name: pod-labeler
    namespace: dev4
  secrets:
  - name: pod-labeler-token-6vgp7
kind: List

Answer 1

您真的应该尝试使用专用的yaml解析器，例如yq，但如果出于任何原因无法使用此类工具，您可以使用以下sed语句删除最后一行：

sed -rni '$!p' 28-res-test-black-dev4-serviceaccounts.yaml

不要打印输出(!p)的最后一行，而打印其他所有内容。

然后可以将其与现有sed命令集成：

sed -i '/uid: \|selfLink: \|resourceVersion: \|creationTimestamp: /$ d' 128-res-test-black-dev4-serviceaccounts.yaml && sed -rni '$!p' 28-res-test-black-dev4-serviceaccounts.yaml