kubernetes - 从 kubernetes yaml 定义中的文件创建配置映射时 |+ 和 |- 之间有什么区别？

Question

我遇到过 2 种从 kubernetes 中的文件创建配置映射的语法。

第一个 ;

apiVersion: v1
data:
  file1.yaml: |+
    parameter1=value1
kind: ConfigMap
metadata:
  name: my-configmap

第二个 ;

apiVersion: v1
data:
  file1.yaml: | -
    parameter1=value1
kind: ConfigMap
metadata:
  name: my-configmap

|+ 和 |- 有什么区别？

Answer 1

这是block chomping indicator .

直接引用链接:

The chomping indicator controls what should happen with newlines at the end of the string. The default, clip, puts a single newline at the end of the string. To remove all newlines, strip them by putting a minus sign (-) after the style indicator. Both clip and strip ignore how many newlines are actually at the end of the block; to keep them all put a plus sign (+) after the style indicator.

这意味着对于:

apiVersion: v1
data:
  file1.yaml: |-
    parameter1=value1


kind: ConfigMap
metadata:
  name: my-configmap

file1.yaml 将具有以下值:

parameter1=value1

为了:

apiVersion: v1
data:
  file1.yaml: |+
    parameter1=value1


kind: ConfigMap
metadata:
  name: my-configmap

file1.yaml 将具有以下值:

parameter1=value1 # line break
# line break
# line break