如何从 vmware_guest_disk_facts 获取字典条目

Question

我正在尝试获取特定硬盘的数据存储名称，但未能成功确定在列表中选择一个条目。

这个输出来自ansible模块"vmware_guest_disk_facts" 我将此输出保存到一个名为 "vm_info".

的变量中

   "guest_disk_facts": {
        "0": {
            "backing_filename": "stuffstuff",
            "capacity_in_kb": 106954752,
            "backing_eagerlyscrub": false,
            "backing_datastore": "WHAT I REALLY WANT",
            "backing_writethrough": false,
            "label": "Hard disk 1",
            "backing_type": "FlatVer2",
            "key": 2000,
            "capacity_in_bytes": 109521666048,
            "backing_thinprovisioned": false,
            "controller_key": 1000,
            "summary": "106,954,752 KB",
            "unit_number": 0,
            "backing_uuid": "info"
        },
        "1": {
            "backing_filename": "stuffstuff",
            "capacity_in_kb": 15728640,
            "backing_eagerlyscrub": false,
            "backing_datastore": "DON'T CARE OF ABOUT THIS ONE",
            "backing_writethrough": false,
            "label": "Hard disk 2",
            "backing_type": "FlatVer2",
            "key": 2001,
            "capacity_in_bytes": 16106127360,
            "backing_thinprovisioned": false,
            "controller_key": 1000,
            "summary": "15,728,640 KB",
            "unit_number": 1,
            "backing_uuid": "info"
        }

    - debug:
        msg: "{{ item.guest_disk_facts | json_query(query) }}"
      with_items: "{{ vm_info.results }}"
      vars:
        query: "guest_disk_facts.0.backing_datastore" #done w/ & w/o quotes around 0

我还尝试了以下查询，我觉得此时我已经用尽了所有选项。

    query: "guest_disk_facts.[0].backing_datastore"#done w/ & w/o quotes around 0

    query: "guest_disk_facts[0].backing_datastore" #done w/ & w/o quotes around 0

    query: "guest_disk_facts.*.backing_datastore" #will give me backing_datastore entries for both dictionaries in this case

我只想获取此词典列表中的一个条目 backing_datastore

消息："WHAT I REALLY WANT"

但到目前为止，我返回时出现以下错误：

预期：['quoted_identifier'、'unquoted_identifier'、'lbracket'、'lbrace']，得到：数字：第 17 列解析错误，标记“0”（ NUMBER），用于表达式

或

消息：“”

或

消息：[

"0",

]

Answer 1

下面的任务给出了"WHAT YOU REALLY WANT"

- debug:
    msg: "{{ guest_disk_facts['0'|quote].backing_datastore }}"

重点是引用引用的键。键“0”和“1”不是 valid variables，必须用引号引起来。

下面的循环

- debug:
    msg: "{{ guest_disk_facts[item|quote].backing_datastore }}"
  loop: "{{ guest_disk_facts.keys() }}"

给予

ok: [localhost] => (item=1) => 
  msg: DON'T CARE OF ABOUT THIS ONE
ok: [localhost] => (item=0) => 
  msg: WHAT I REALLY WANT

Answer 2

另一种方法 -

  - name: Get all disks from existing VM
    vmware_guest_disk_info:
      validate_certs: False
      hostname: '{{ vcenter_hostname }}'
      username: '{{ vcenter_username }}'
      password: '{{ vcenter_password }}'
      datacenter: Asia-Datacenter1
      name: VM_8046
    register: existing_disk

  - name: Get Backing datastore for desired disk id
    set_fact:
      disk_zero_datastore: "{{ item.value.backing_datastore }}"
    with_dict: "{{ existing_disk.guest_disk_info }}"
    when: item.key == '0'

  - debug:
      msg: "{{ disk_zero_datastore }}"
    when: disk_zero_datastore is defined

如何从 vmware_guest_disk_facts 获取字典条目

How to get entry of a dictionary from vmware_guest_disk_facts

vmware

json

yaml

ansible