使用Ansible从多个citrix管理程序vm获取IP地址列表

如何解决使用Ansible从多个citrix管理程序vm获取IP地址列表

我正在使用ansible和xenserver_guest_info模块从citrix虚拟机管理程序服务器上的多个虚拟机创建IP地址列表。目前，我只想打印ip列表，但是将这些ip存储在ansible列表中会更好。我计划遍历此ip列表，并使用ansible在所有这些vm上运行命令。

这是我目前的剧本。它将循环遍历xenserver模块返回的字典输出，尝试提取ip地址。：

- name: Manage VMs
  connection: local
  hosts: localhost

  # Hypervisor server info from vars file
  vars_files:
    - xen_vars.yml

  tasks:

  - name: Gather facts
    xenserver_guest_info:
      hostname: "{{ xen_address}}"
      username: "{{ admin_username }}"
      password: "{{ admin_password }}"
      name: "{{ item }}"
    loop: "{{ xen_machines }}"
    register: facts

  # - name: Get IP's of VM's

  - debug:
      msg: "{{item.instance.networks}}" 
    loop: "{{facts.results}}"

给定服务器上两个虚拟机的列表，它将产生以下输出：

PLAY [Manage VMs] **************************************************************

TASK [Gathering Facts] *********************************************************
ok: [localhost]

TASK [Gather facts] ************************************************************
ok: [localhost] => (item=Ubuntu 20)
ok: [localhost] => (item=Ubuntu 20 2)

TASK [debug] *******************************************************************
ok: [localhost] => (item={'Failed': False,'changed': False,'instance': {'state': 'poweredoff','name': 'Ubuntu 20','name_desc': '','uuid': 'cf5db672-67cf-7e8c-6951-f5959ab62e26','is_template': False,'folder': '','hardware': {'num_cpus': 1,'num_cpu_cores_per_socket': 1,'memory_mb': 1024},'disks': [{'size': 21474836480,'name': 'Ubuntu 20 0','name_desc': 'Created by template provisioner','sr': 'Local storage','sr_uuid': 'd7bb817b-281e-fd9c-33a3-54db8935d596','os_device': 'xvda','vbd_userdevice': '0'}],'cdrom': {'type': 'iso','iso_name': 'ubuntu-20.04.1-desktop-amd64.iso'},'networks': [{'name': 'Pool-wide network associated with eth0','mac': 'a2:07:be:29:5f:ad','vif_device': '0','mtu': '1500','ip': '','prefix': '','netmask': '','gateway': '','ip6': [],'prefix6': '','gateway6': ''}],'home_server': 'citrix-mwyqyqaa','domid': '-1','platform': {'timeoffset': '0','videoram': '8','hpet': 'true','secureboot': 'false','device-model': 'qemu-upstream-compat','apic': 'true','device_id': '0001','vga': 'std','nx': 'true','pae': 'true','viridian': 'false','acpi': '1'},'other_config': {'base_template_name': 'Ubuntu Focal Fossa 20.04','import_task': 'OpaqueRef:3b6061a0-a204-4ed4-be20-842a359a70fa','mac_seed': 'f6ae87b5-2f00-0717-559e-8b624fe92f35','install-methods': 'cdrom,nfs,http,ftp','linux_template': 'true'},'xenstore_data': {'vm-data': '','vm-data/mmio-hole-size': '268435456'},'customization_agent': 'custom'},'invocation': {'module_args': {'hostname': '192.168.0.187','username': 'root','password': 'VALUE_SPECIFIED_IN_NO_LOG_ParaMETER','validate_certs': True,'uuid': None}},'item': 'Ubuntu 20','ansible_loop_var': 'item'}) => {
    "msg": [
        {
            "gateway": "","gateway6": "","ip": "192.168.0.2","ip6": [],"mac": "a2:07:be:29:5f:ad","mtu": "1500","name": "Pool-wide network associated with eth0","netmask": "","prefix": "","prefix6": "","vif_device": "0"
        }
    ]
}
ok: [localhost] => (item={'Failed': False,'name': 'Ubuntu 20 2','uuid': 'b087832e-81f1-c091-1363-8b8ba8442c8e','mac': 'e6:cd:ca:ff:c3:e0','mac_seed': '3c56a628-0f68-34f9-fe98-4bf2214a5891','item': 'Ubuntu 20 2',"ip": "192.168.0.3","mac": "e6:cd:ca:ff:c3:e0","vif_device": "0"
        }
    ]
}

PLAY RECAP *********************************************************************
localhost                  : ok=3    changed=0    unreachable=0    Failed=0    skipped=0    rescued=0    ignored=0 

我尝试仅访问ip，但是由于它存储在列表中，因此无法正常工作。

再次我的最终目标是让ansible吐出ip列表，如下所示：

192.168.0.2
192.168.0.3

或者甚至更好地将它们存储在ansible列表中以备后用。任何帮助将不胜感激。

解决方法

如果您唯一真正的问题是IP在列表中，并且您知道（由于配置VM的方式）该列表始终只有一个条目，则只需在列表中获取第一项即可。列表：

item.instance.networks[0].ip

如果您想使用这些IP地址在VM上做一些Ansible工作，建议您使用add_host为剧本中的第二部剧本建立一个新的清单：

- name: Manage VMs
  connection: local
  hosts: localhost

  # Hypervisor server info from vars file
  vars_files:
    - xen_vars.yml

  tasks:

  - name: Gather facts
    xenserver_guest_info:
      hostname: "{{ xen_address}}"
      username: "{{ admin_username }}"
      password: "{{ admin_password }}"
      name: "{{ item }}"
    loop: "{{ xen_machines }}"
    register: facts

  # - name: Get IP's of VM's

  - debug:
      msg: "{{item.instance.networks[0].ip}}" 
    loop: "{{facts.results}}"

  - name: Build inventory of VMs
    add_host:
      name: "{{ item.instance.networks[0].ip }}"
      groups: vms
      # You can add other variables per-host here if you want
    loop: "{{ xen_machines }}"
    loop_control:
      label: "{{ item.instance.name }}"

- name: Do stuff directly to the VMs
  hosts: vms  # This is the group you just created
  connection: ssh

  tasks:
    - debug:
        msg: "{{ Hello from a VM }}"

,

以下任务

    - set_fact:
        ips: "{{ facts.results|
                 json_query('[].instance.networks[].ip') }}"
    - debug:
        var: ips

应该给予

  ips:
  - 192.168.0.2
  - 192.168.0.3