如何用yq v4.28.1在YAML数组指定元素后插入新对象？

可以实现这个需求，通过yq的insert结合index、select就能精准定位插入位置。

执行命令 #

假设你的YAML内容保存在input.yaml文件中，运行以下命令：

yq eval '.services |= insert((index(select(.name == "edgeview")) + 1), {"name": "new_element_name", "image": "new_element_image"})' input.yaml

命令说明 #

• .services：定位到目标数组节点
• index(select(.name == "edgeview"))：找到name为edgeview的元素在数组中的索引
• insert(pos, value)：在索引+1的位置（即目标元素的下一位）插入指定的新对象

输入YAML #

services:
  - name: newlogd
    image: NEWLOGD_TAG
    cgroupsPath: /eve/services/newlogd
    oomScoreAdj: -999
  - name: edgeview
    image: EDGEVIEW_TAG
    cgroupsPath: /eve/services/eve-edgeview
    oomScoreAdj: -800
  - name: debug
    image: DEBUG_TAG
    cgroupsPath: /eve/services/debug
    oomScoreAdj: -999
  - name: wwan
    image: WWAN_TAG
    cgroupsPath: /eve/services/wwan
    oomScoreAdj: -999

输出YAML #

services:
  - name: newlogd
    image: NEWLOGD_TAG
    cgroupsPath: /eve/services/newlogd
    oomScoreAdj: -999
  - name: edgeview
    image: EDGEVIEW_TAG
    cgroupsPath: /eve/services/eve-edgeview
    oomScoreAdj: -800
  - name: new_element_name
    image: new_element_image
  - name: debug
    image: DEBUG_TAG
    cgroupsPath: /eve/services/debug
    oomScoreAdj: -999
  - name: wwan
    image: WWAN_TAG
    cgroupsPath: /eve/services/wwan
    oomScoreAdj: -999

内容的提问来源于stack exchange，提问作者mishmashru