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chin wooi Ng
Asked: 2024-10-08 12:12:22 +0800 CST

使用 Ansible 获取具有最多可用空间的 VMware 数据存储

  • 772

我正在尝试获取具有最多可用空间的 VMware 数据存储，然后使用它的 URL 在 Kubernetes 集群中创建存储类。

我正在使用模块获取信息vmware_datastore_info，如下所示：

--- 
- name: Gather info from ESXi datacenter
  hosts: localhost 
  gather_facts: false 
 
  tasks: 
  - name: Gather info from ESXi datastore 
    vmware_datastore_info: 
      hostname: '{{ vcenter_server }}' 
      username: '{{ username }}' 
      password: '{{ password }}' 
      datacenter_name: '{{ datacenter_name }}' 
      validate_certs: false 
    delegate_to: localhost 
    register: info 

  - debug: var=info.datastores

示例info.datastores结果

{
    "msg": [
        {
            "accessible": true,
            "capacity": 5156108238848,
            "datastore_cluster": "DDA_SPIT_013_002",
            "freeSpace": 5154511257600,
            "maintenanceMode": "normal",
            "multipleHostAccess": true,
            "name": "LIT013_078",
            "provisioned": 1596981248,
            "type": "VMFS",
            "uncommitted": 0,
            "url": "ds:///vmfs/volumes/64e55997-3946cc08-ce62-9440c96b1102/"
        },
        {
            "accessible": true,
            "capacity": 5156108238848,
            "datastore_cluster": "DDA_SPIT_013_002",
            "freeSpace": 5154341388288,
            "maintenanceMode": "normal",
            "multipleHostAccess": true,
            "name": "LIT013_075",
            "provisioned": 11265900544,
            "type": "VMFS",
            "uncommitted": 9499049984,
            "url": "ds:///vmfs/volumes/64e5595d-02d66360-bf73-9440c96b1102/"
        },
        {
            "accessible": true,
            "capacity": 5156108238848,
            "datastore_cluster": "DDA_SPIT_013_002",
            "freeSpace": 5154511257600,
            "maintenanceMode": "normal",
            "multipleHostAccess": true,
            "name": "LIT013_077",
            "provisioned": 1596981248,
            "type": "VMFS",
            "uncommitted": 0,
            "url": "ds:///vmfs/volumes/64e55986-d2d1286a-5c00-9440c96b1102/"
        },
        {
            "accessible": true,
            "capacity": 5156108238848,
            "datastore_cluster": "DDA_SPIT_013_002",
            "freeSpace": 5154079244288,
            "maintenanceMode": "normal",
            "multipleHostAccess": true,
            "name": "LIT013_067",
            "provisioned": 2943352832,
            "type": "VMFS",
            "uncommitted": 914358272,
            "url": "ds:///vmfs/volumes/60743b62-a519d76c-1d48-9440c96b1102/"
        },
        {
            "accessible": true,
            "capacity": 5156108238848,
            "datastore_cluster": "DDA_SPIT_013_002",
            "freeSpace": 5154511257600,
            "maintenanceMode": "normal",
            "multipleHostAccess": true,
            "name": "LIT013_074",
            "provisioned": 1596981248,
            "type": "VMFS",
            "uncommitted": 0,
            "url": "ds:///vmfs/volumes/64e5594a-07107de8-1823-9440c96b1102/"
        },
        {
            "accessible": true,
            "capacity": 5156108238848,
            "datastore_cluster": "DDA_SPIT_013_002",
            "freeSpace": 5154511257600,
            "maintenanceMode": "normal",
            "multipleHostAccess": true,
            "name": "LIT013_072",
            "provisioned": 1596981248,
            "type": "VMFS",
            "uncommitted": 0,
            "url": "ds:///vmfs/volumes/64e5591a-1ed49f04-2a09-9440c96b1102/"
        },
        {
            "accessible": true,
            "capacity": 5156108238848,
            "datastore_cluster": "DDA_SPIT_013_002",
            "freeSpace": 4399479914496,
            "maintenanceMode": "normal",
            "multipleHostAccess": true,
            "name": "LIT013_071",
            "provisioned": 1383218544640,
            "type": "VMFS",
            "uncommitted": 626590220288,
            "url": "ds:///vmfs/volumes/64e558fc-6a916ba4-82d3-9440c96b1102/"
        },
        {
            "accessible": true,
            "capacity": 5156108238848,
            "datastore_cluster": "CZCHO_SPIT_013_002",
            "freeSpace": 3060709457920,
            "maintenanceMode": "normal",
            "multipleHostAccess": true,
            "name": "LIT013_070",
            "provisioned": 2428559687680,
            "type": "VMFS",
            "uncommitted": 333160906752,
            "url": "ds:///vmfs/volumes/6346c446-6219e6bc-f0a7-9440c96b1102/"
        }
    ]
}

我怎样才能datastores.url从这个结果中只得到一个？

ansible

2 个回答

  1. Best Answer

    最小示例剧本

    ---
- hosts: localhost
  become: false
  gather_facts: false

  vars:

    info:
      datastores: [
        {
            "freeSpace": 5154511257600,
            "name": "LIT013_078",
            "url": "ds:///vmfs/volumes/64e55997-3946cc08-ce62-9440c96b1102/"
        },
        {
            "freeSpace": 5154341388288,
            "name": "LIT013_075",
            "url": "ds:///vmfs/volumes/64e5595d-02d66360-bf73-9440c96b1102/"
        },
        {
            "freeSpace": 5154511257600,
            "name": "LIT013_077",
            "url": "ds:///vmfs/volumes/64e55986-d2d1286a-5c00-9440c96b1102/"
        },
        {
            "freeSpace": 5154079244288,
            "name": "LIT013_067",
            "url": "ds:///vmfs/volumes/60743b62-a519d76c-1d48-9440c96b1102/"
        },
        {
            "freeSpace": 5154511257600,
            "name": "LIT013_074",
            "url": "ds:///vmfs/volumes/64e5594a-07107de8-1823-9440c96b1102/"
        },
        {
            "freeSpace": 5154511257600,
            "name": "LIT013_072",
            "url": "ds:///vmfs/volumes/64e5591a-1ed49f04-2a09-9440c96b1102/"
        },
        {
            "freeSpace": 4399479914496,
            "name": "LIT013_071",
            "url": "ds:///vmfs/volumes/64e558fc-6a916ba4-82d3-9440c96b1102/"
        },
        {
            "freeSpace": 3060709457920,
            "name": "LIT013_070",
            "url": "ds:///vmfs/volumes/6346c446-6219e6bc-f0a7-9440c96b1102/"
        }
      ]

  tasks:

    - name: This is
      debug:
        msg: "{{ info.datastores | type_debug }}"

    - name: with elements of
      debug:
        msg: "{{ info.datastores | first | type_debug }}"

    展示

    TASK [This is] ***************
ok: [localhost] =>
  msg: list

TASK [with elements of] ******
ok: [localhost] =>
  msg: dict

    您有一个字典列表。因此，一种方法是简单地提取与多个字典列表中的最小/最大值相关的键，然后sort使用last最大值/元素。

        - name: and max entry
      debug:
        msg: "{{ info.datastores | sort(attribute='freeSpace') | last }}"

    和

    TASK [and max entry] *******************************************
ok: [localhost] =>
  msg:
    freeSpace: 5154511257600
    name: LIT013_072
    url: ds:///vmfs/volumes/64e5591a-1ed49f04-2a09-9440c96b1102/

    要获取 URL，仅使用示例

    "{{ (info.datastores | sort(attribute='freeSpace') | last).url }}"

    进一步阅读

    • 1

  2. 您可以max立即在字典列表上使用 Jinja 的过滤器。

    max处理字典时，你只需要提供你想要应用的属性：

    参数：

    • case_sensitive – 将大写和小写字符串视为不同的字符串。
    • 属性– 获取此属性最大值的对象。

    来源：max过滤器文档

    因此，对于您的具体用例：

    - name: Get the datastore URL with the most space
  ansible.builtin.debug:
    msg: "{{ (info.datastores | max(attribute='freeSpace')).url }}"

    其结果为：

    ok: [localhost] => 
  msg: ds:///vmfs/volumes/64e55997-3946cc08-ce62-9440c96b1102/
    • 0

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