Ansible：使用 ansible facts，如何根据存储控制器值获取磁盘设备，然后将该设备设置为变量

Question

上下文：我有一个系统，其中包含来自不同存储控制器的磁盘组合，因此每种类型的磁盘都有不同的用途。我是 ansible 的新手，边走边学。编写一个从每种类型的控制器获取磁盘的剧本，以便我可以设置它们。

例如。下面是 #'filter=ansible_devices*' 的示例输出 ... sdz 设备来自 SATA 控制器。在我的其他主机上，它可能并不总是 sdz.. 所以我想获取设备名称并将其存储在一个变量中，如果事实上该设备具有 "host": "SATA controller"。我在想也许我需要遍历 ansible_devices 字典，找到匹配的键 ("host": "SATA controller") 然后获取它的父字典，这将是设备。有没有办法做到这一点......或更简单的方法？ :)

"sdz": {
            "holders": [
                "mpathz"
            ],
            "host": "SATA controller: Intel Corporation C610/X99 series chipset 6-Port SATA Controller [AHCI mode] (rev 05)",
            "links": {
                "ids": [
                    "ata-SAMSUNG_MZ7GE960HMHP-00003_S1Y2NYAFC02269",
                    "wwn-0x50025388003aeb2a"
                ],
                "labels": [],
                "masters": [
                    "dm-19"
                ],
                "uuids": []
            },
            "model": "SAMSUNG MZ7GE960",
            "partitions": {},
            "removable": "0",
            "rotational": "0",
            "sas_address": null,
            "sas_device_handle": null,
            "scheduler_mode": "cfq",
            "sectors": "1875385008",
            "sectorsize": "512",
            "serial": "S1Y2NYAFC02269",
            "size": "894.25 GB",
            "support_discard": "512",
            "vendor": "ATA",
            "virtual": 1,
            "wwn": "0x50025388003aeb2a"

Answer 1

假设 ansible_devices 已经设置为变量

，剧本中的这个任务片段应该可以完成

 tasks:

    - name: get device name
      set_fact:
        device_name: "{{ item.key }}"
      no_log: True
      with_dict: "{{ ansible_devices }}"
      when: "item.value.host.startswith('SATA')"

    - name: show all values for selected device name
      debug: var=ansible_devices[device_name]

    - name: show only device name
      debug: var=device_name

set_fact 将获取您的设备名称。这两个调试语句将分别转储所有设备值和设备名称。

Answer 2

假设ansible.builtin.setup已完成，您可以使用此代码获取所有存储设备：

   - name: initialize empty list for devices
      set_fact:
        storage_devices: []
      no_log: true

    - name: get SATA and NVMe devices
      set_fact:
        storage_devices: "{{ storage_devices + [item.key] }}"
      no_log: true
      with_dict: "{{ ansible_devices }}"
      when: "item.value.host.startswith('SATA controller:') or
             item.value.host.startswith('Non-Volatile memory controller:')"

    - name: show all values for selected devices
      debug: msg="{{ ansible_devices[item] }}"
      loop: "{{ storage_devices }}"

    - name: show devices names
      debug: var=storage_devices

    - name: show first SATA or NVMe device in the list
      debug: var=storage_devices[0]

Ansible：使用 ansible facts，如何根据存储控制器值获取磁盘设备，然后将该设备设置为变量

Ansible: Using ansible facts, how can I get a disk device based on the storage controller value and then set the device as a variable

ansible

ansible-facts