YAML

• YAML Ain't Markup Language
  • https://yaml.org/
  • https://yaml.org/spec/1.2.2/
    • 2021-10-01
• 参考
  • https://kubernetes.io/docs/reference/encodings/kyaml/
    • a safer and less ambiguous subset of YAML
    • Kubernetes v1.34+
    • 要求 {}, [] 和 双引号
    • 接近 JSON
    • kubectl get -o kyaml svc hostnames

# "1 2"
s0: 1
  2
# " 1 2"
s1: '
  1
  2'

# "1\n2\n"
a0: |
  1
  2
# "1\n2"
a1: |-
  1
  2

# "1 2\n"
b0: >
  1
  2
# "1 2"
b1: >-
  1
  2
# "1\n2\n\n"
b2: >+
  1

  2
# "  1\n\n  2"
b3: >2-
    1

    2

.x: &x
  x: 1
  y: 1
# x 均 = 0
x0:
  x: 0
  <<: *x
x1:
  <<: *x
  x: 0

• 换行转空格 - >
• 保留换行 - |
• 默认结尾保留单换行
• 移除结尾换行 - -
• 保留结尾换行 - +
• 保留结尾换行 - -
• <<
  • https://yaml.org/type/merge.html
  • << : *CENTER
  • << : [ *CENTER, *BIG ]
• https://yaml-multiline.info/

---
!!omap
- a: 1
- b: 1

[
  ["a", 1],
  ["b", 1]
]