如何使用Jmespath过滤以相似字符串键开头的多个键名？

Question

我有下面的 json，我想从中过滤所有以键 macaddress_ 开头的所有 mac 地址，使用 jmespath 如何实现？

{
  "facts_hash": {
    "macaddress_em1": "44:a8:42:27:c7:ba",
    "netmask_em1": "255.255.255.0",
    "mtu_em1": "1500",
    "macaddress_em2": "44:a8:42:27:c7:bb",
    "mtu_em2": "1500",
    "macaddress_em3": "44:a8:42:27:c7:bc",
    "mtu_em3": "1500",
    "macaddress_em4": "44:a8:42:27:c7:bd",
    "mtu_em4": "1500",

  }
}

谢谢

Answer 1

可以 select 匹配键并提取值，而不是 json_query。例如

    - debug:
        msg: "{{ my_keys|
                 map('extract', facts_hash)|
                 list }}"
      vars:
        my_keys: "{{ facts_hash.keys()|
                     select('match', '^macaddress_(.*)$')|
                     list }}"

给予

    "msg": [
        "44:a8:42:27:c7:ba",
        "44:a8:42:27:c7:bb",
        "44:a8:42:27:c7:bc",
        "44:a8:42:27:c7:bd"
    ]

如何使用Jmespath过滤以相似字符串键开头的多个键名？

How to filter multiple key name start with similar string key using Jmespath?

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jmespath