如何从ansible输出中过滤掉特定行

Question

我在运行我的 ansible-playbook 从 playbook 输出中过滤掉 IP 地址时遇到问题。这是我的代码

- hosts: myhost
  tasks:
    - name: Gather all VMs from a specific folder
      community.vmware.vmware_vm_info:
        hostname: myhost.com
        username: local
        password: mypass
        folder: "/VMFStorage/vm/"
        validate_certs: False
      delegate_to: localhost
      register: vm_info
    - debug:
        var: vm_info

代码的输出

ok: [myhost] => {
    "vm_info": {
        "changed": false,
        "failed": false,
        "virtual_machines": [
            {
                "attributes": {},
                "cluster": "Storage",
                "datacenter": "VMFStorage",
                "esxi_hostname": "161.92.211.24",
                "folder": "/VMFStorage/vm/",
                "guest_fullname": "Red Hat Enterprise Linux 8 (64-bit)",
                "guest_name": "RHEL Machine",
                "ip_address": "192.168.1.47",
                "mac_address": [
                    "00:50:56:a3:b1:e9"
                ],
                "moid": "vm-22949",
                "power_state": "poweredOn",
                "tags": [],
                "uuid": "4223f3fa-eeae-6a96-6af5-d68dc94199f3",
                "vm_network": {
                    "00:50:56:a3:b1:e9": {
                        "ipv4": [
                            "192.168.1.47"
                        ],
                        "ipv6": [
                            "fe80::250:56ff:fea3:b1e9"
                        ]
                    }
                }
            },
            {
                "attributes": {},
                "cluster": "Storage",
                "datacenter": "VMFStorage",
                "esxi_hostname": "161.92.211.22",
                "folder": "/VMFStorage/vm/",
                "guest_fullname": "Red Hat Enterprise Linux 8 (64-bit)",
                "guest_name": "Machine2",
                "ip_address": "192.168.1.29",
                "mac_address": [
                    "00:50:56:a3:b3:6d"
                ],
                "moid": "vm-21360",
                "power_state": "poweredOff",
                "tags": [],
                "uuid": "42239cd1-69ec-ff5d-a557-85d0bc8c9edc",
                "vm_network": {
                    "00:50:56:a3:b3:6d": {
                        "ipv4": [],
                        "ipv6": []
                    }
                }
            },

所需的输出是捕获 Machine1 来宾名称的 IP 地址并打印该输出

192.168.1.29

我尝试了很多可能性，但找不到合适的解决方案任何帮助将不胜感激

更新

- hosts: myhost
  tasks:
    - name: Gather all VMs from a specific folder
      community.vmware.vmware_vm_info:
        hostname: myhost.com
        username: local
        password: mypass
        folder: "/VMFStorage/vm/"
        validate_certs: False
      delegate_to: localhost
      register: vm_info
    - set_fact:
        ip: "{{ vm_info.virtual_machines|
                selectattr('guest_name', 'eq', 'AlmaLinuxBUILD-Machine')|
                map(attribute='ip_address')|first }}"
    - debug:
        var: ip

Answer 1

试试这个.. 如果你只想要 machine1 ip_address.

    - debug:
        msg: "{{ vm_info.virtual_machines[1].ip_address }}"

试试这个..如果你只想要所有 VM ip_addresses.

    - debug:
        msg: "{{ vm_info.virtual_machines[*].ip_address }}"

Answer 2

有很多选择。例如，

Select 首先从列表中提取字典并提取属性

    - debug:
        var: ip
      vars:
        ip: "{{ vm_info.virtual_machines|
                selectattr('guest_name', 'eq', 'Machine2')|
                map(attribute='ip_address')|first }}"

给予

  ip: 192.168.1.29

如果您更喜欢json_query，下面的任务会给出相同的结果

    - debug:
        var: ip
      vars:
        ip: "{{ vm_info.virtual_machines|
                json_query('[?guest_name==`Machine2`].ip_address')|first }}"

如果列表中有很多项目需要引用，请先创建字典，例如

    - debug:
        var: name_ip
      vars:
        name_ip: "{{ vm_info.virtual_machines|
                     items2dict(key_name='guest_name', 
                                value_name='ip_address') }}"

给予

  name_ip:
    Machine2: 192.168.1.29
    RHEL Machine: 192.168.1.47

然后，使用这个字典来获取客人的IP。下面的任务也给出了相同的结果

    - debug:
        var: ip
      vars:
        ip: "{{ name_ip['Machine2'] }}"

问：“如何在同一个剧本的其他地方使用ip变量？”

答：有many options。比如放入set_facts（优先级19）

    - set_facts:
        ip: "{{ name_ip['Machine2'] }}"
    - debug:
        var: ip

如何从ansible输出中过滤掉特定行

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