Ansible - 無法列印自定義事實的值

這是與 vmware 對話的角色的劇本部分。

我正在嘗試設置一個接收虛擬機名稱的自定義事實**（target_vm） 。**

但是當我使用調試模組列印它的值時，它似乎是空的。

它表明set_fact設置正確，因為調試輸出顯示**{“ansible_facts”: {“target_vm”: “TESTVM”}**。

我還做了一個 Fail 任務，它顯示是否設置了 target_vm 事實。

這是劇本

- delegate_to: localhost
 become: no
 delegate_facts: yes
 vars:
   vc_hostname: 'vcenter.bio.local'
   vc_username: 'bio.local\ansible'
   vc_password: "{{ v_pass }}"
   vm_uuid: '4217200F-46D2-C9FD-E7FD-768D21B327E8' | lower
 block:
   - name: Gather only registered virtual machines
     vmware_vm_info:
       hostname: '{{ vc_hostname }}'
       username: '{{ vc_username }}'
       password: '{{ vc_password }}'
       validate_certs: False
       vm_type: vm
     delegate_to: localhost
     register: virtual_info
     no_log: true

 - name: Get VM name from UUID
   set_fact:
     target_vm: "{{ my_item.guest_name }}"
   loop: "{{ virtual_info.virtual_machines }}"
   when: my_item.uuid == vm_uuid
   loop_control:
     loop_var: my_item
   delegate_to: localhost
   delegate_facts: True
 
 - name: Verify interface name is set
   fail:
     msg: "Could not determine target_vm name!"
   when: target_vm is not defined
 
 - name: Print Output
   debug:
     msg: "The VM name is: {{ target_vm }}"

這是輸出

TASK [vmwaretaks : Get VM name from UUID] ***************************************************************************************
ok: [testvm] => (item={'guest_name': 'TESTVM', 'guest_fullname': 'Red Hat Enterprise Linux 6 (64-bit)', 'power_state': 'poweredOn', 'ip_address': '192.168.54.32', 'mac_address': ['00:32:52:97:e9:c8'], 'uuid': '4217200f-46d2-c9fd-e7fd-768d21b327e8', 'vm_network': {'00:32:52:97:e9:c8': {'ipv4': ['192.168.54.32'], 'ipv6': ['fe80::250:56ff:fe97:d4c3']}}, 'esxi_hostname': 'b3j15esx05.bio.local', 'cluster': 'JAS-Lab-DEP', 'attributes': {}, 'tags': []}) => {"ansible_facts": {"target_vm": "TESTVM"}, "ansible_loop_var": "my_item", "changed": false, "my_item": {"attributes": {}, "cluster": "JAS-Lab-DEP", "esxi_hostname": "b3j15esx05.bio.local", "guest_fullname": "Red Hat Enterprise Linux 6 (64-bit)", "guest_name": "TESTVM", "ip_address": "192.168.54.32", "mac_address": ["00:32:52:97:e9:c8"], "power_state": "poweredOn", "tags": [], "uuid": "4217200f-46d2-c9fd-e7fd-768d21b327e8", "vm_network": {"00:32:52:97:e9:c8": {"ipv4": ["192.168.54.32"], "ipv6": ["fe80::250:56ff:fe97:d4c3"]}}}}

TASK [vmwaretaks : Verify interface name is set] ********************************************************************************
fatal: [testvm]: FAILED! => {"changed": false, "msg": "Could not determine target_vm name!"}

PLAY RECAP **********************************************************************************************************************
testvm              : ok=13   changed=0    unreachable=0    failed=1    skipped=2    rescued=0    ignored=0

你有delegate_facts: True任務set_fact，所以你正在為 localhost 設置變數。然後，您嘗試在未設置它的播放主機的上下文中訪問它。

您必須決定要設置它的位置。如果 localhost 正確，則需要通過 hostvars ( hostvars['localhost']['testvm']) 訪問；如果不是，則需要刪除delegate_facts.

引用自：https://serverfault.com/questions/1078814