不可见的云set_fact从dict中的列表中添加项

Question

我正在尝试使用ansible hcloud模块。我需要用我创建的服务器的IP设置一个事实列表。

第一台服务器很容易，因为它总是只有一台：

创建空列表：

    - set_fact:
        ips: []

然后创建服务器并将服务器IP添加到列表中：

    - set_fact:
        ips:
          - "{{ ips + [ a3srv_fact.hcloud_server.ipv4_address ] }}"

下一个块有一个循环，因此寄存器给了我以下内容：

"hc_fact": {
    "changed": false,
    "msg": "All items completed",
    "results": [
        {
            "ansible_loop_var": "item",
            "changed": false,
            "failed": false,
            "hcloud_server": {
                "backup_window": "None",
                "datacenter": "nbg1-dc3",
                "id": "3083849",
                "image": "centos-7",
                "ipv4_address": "116.203.204.49",
                "ipv6": "2a01:4f8:c2c:ade4::/64",
                "labels": {},
                "location": "nbg1",
                "name": "a3hc1",
                "rescue_enabled": false,
                "server_type": "cx11",
                "status": "running"
            },
            "invocation": {
                "module_args": {
                    "api_token": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER",
                    "backups": false,
                    "datacenter": null,
                    "endpoint": "https://api.hetzner.cloud/v1",
                    "force_upgrade": false,
                    "id": null,
                    "image": "centos-7",
                    "labels": null,
                    "location": null,
                    "name": "a3hc1",
                    "server_type": "cx11",
                    "ssh_keys": null,
                    "state": "present",
                    "upgrade_disk": false,
                    "user_data": null,
                    "volumes": null
                }
            },
            "item": "hc1"
        },
        {
            "ansible_loop_var": "item",
            "changed": false,
            "failed": false,
            "hcloud_server": {
                "backup_window": "None",
                "datacenter": "nbg1-dc3",
                "id": "3083921",
                "image": "centos-7",
                "ipv4_address": "116.203.204.136",
                "ipv6": "2a01:4f8:c2c:ae25::/64",
                "labels": {},
                "location": "nbg1",
                "name": "a3hc2",
                "rescue_enabled": false,
                "server_type": "cx11",
                "status": "running"
            },
            "invocation": {
                "module_args": {
                    "api_token": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER",
                    "backups": false,
                    "datacenter": null,
                    "endpoint": "https://api.hetzner.cloud/v1",
                    "force_upgrade": false,
                    "id": null,
                    "image": "centos-7",
                    "labels": null,
                    "location": null,
                    "name": "a3hc2",
                    "server_type": "cx11",
                    "ssh_keys": null,
                    "state": "present",
                    "upgrade_disk": false,
                    "user_data": null,
                    "volumes": null
                }
            },
            "item": "hc2"
        }
    ]
}

结果块可以有一个或多个部分，有两个。

我需要将每个ipv4_address添加到现有的事实列表中。

我很确定有一个简单的方法使用yml语法，但我就是搞不懂。

Answer 1

使用json_query。以下任务

- set_fact:
    ips: "{{ ips|default([]) +
             hc_fact.results|
             json_query('[*].hcloud_server.ipv4_address')
             }}"

给出

"ips": [
    "116.203.204.49", 
    "116.203.204.136"
]