Facts 變數查詢

1. ansible 使用 setup 模組可以列出 ansible_facts 變數，增加 filter=.. 參數可以過濾變數。

   ceuser@deyu:~/ansible_pb$ ansible dev -m setup -a "filter=ansible_hostname"
   kvm11 | SUCCESS => {
       "ansible_facts": {
           "ansible_hostname": "kvm11",
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": false
   }
   

2. 過濾 ansible_mem* 跟記憶體有關的 ansible_facts 變數，得知總記憶體大小的變數為 ansible_memory_mb.real.total 或 ansible_memtotal_mb。

   ceuser@deyu:~/ansible_pb$ ansible dev -m setup -a "filter=ansible_mem*"
   kvm11 | SUCCESS => {
       "ansible_facts": {
           "ansible_memfree_mb": 1114,
           "ansible_memory_mb": {
               "nocache": {
                   "free": 1453,
                   "used": 252
               },
               "real": {
                   "free": 1114,
                   "total": 1705,
                   "used": 591
               },
               "swap": {
                   "cached": 0,
                   "free": 95,
                   "total": 95,
                   "used": 0
               }
           },
           "ansible_memtotal_mb": 1705,
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": false
   }
   

3. 查詢 bios 相關變數，版本變數為 ansible_bios_version。

   ceuser@deyu:~/ansible_pb$ ansible dev -m setup -a "filter=ansible_bios_*"
   kvm11 | SUCCESS => {
       "ansible_facts": {
           "ansible_bios_date": "04/01/2014",
           "ansible_bios_vendor": "SeaBIOS",
           "ansible_bios_version": "1.16.3-7.el10.alma.1",
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": false
   }
   

4. 查詢 ansible_devices 變數，vda 大小變數為 ansible_devices.vda.size。

   ceuser@deyu:~/ansible_pb$ ansible dev -m setup -a "filter=ansible_devices"
   kvm11 | SUCCESS => {
       "ansible_facts": {
           "ansible_devices": {
               "dm-0": {
                   "holders": [],
                   "host": "",
                   "links": {
                       "ids": [
                           "dm-name-vg_kvm11-root",
                           "dm-uuid-LVM-Vt5X...........Cay9sC5iT"
                       ],
                       "labels": [],
                       "masters": [],
                       "uuids": [
                           "b56f6615-6b57-4274-b59f-58ac3ecb2414"
                       ]
                   },
                   "model": null,
                   "partitions": {},
                   "removable": "0",
                   "rotational": "1",
                   "sas_address": null,
                   "sas_device_handle": null,
                   "scheduler_mode": "",
                   "sectors": "6963200",
                   "sectorsize": "512",
                   "size": "3.32 GB",
                   "support_discard": "512",
                   "vendor": null,
                   "virtual": 1
               },
               "dm-1": {
                   "holders": [],
                   "host": "",
                   "links": {
                       "ids": [
                           "dm-name-vg_kvm11-swap",
                           "dm-uuid-LVM-Vt5X..............."
                       ],
                       "labels": [],
                       "masters": [],
                       "uuids": [
                           "23ace372-4bf3-4bf8-ad8b-d7a76616e459"
                       ]
                   },
                   "model": null,
                   "partitions": {},
                   "removable": "0",
                   "rotational": "1",
                   "sas_address": null,
                   "sas_device_handle": null,
                   "scheduler_mode": "",
                   "sectors": "196608",
                   "sectorsize": "512",
                   "size": "96.00 MB",
                   "support_discard": "512",
                   "vendor": null,
                   "virtual": 1
               },
               "dm-2": {
                   "holders": [],
                   "host": "",
                   "links": {
                       "ids": [
                           "dm-name-fieldwork-test",
                           "dm-uuid-LVM-n8Y................"
                       ],
                       "labels": [],
                       "masters": [],
                       "uuids": [
                           "b1b267cc-0814-4d80-98b0-3f3e7b62dcc7"
                       ]
                   },
                   "model": null,
                   "partitions": {},
                   "removable": "0",
                   "rotational": "1",
                   "sas_address": null,
                   "sas_device_handle": null,
                   "scheduler_mode": "",
                   "sectors": "409600",
                   "sectorsize": "512",
                   "size": "200.00 MB",
                   "support_discard": "512",
                   "vendor": null,
                   "virtual": 1
               },
               "vda": {
                   "holders": [],
                   "host": "",
                   "links": {
                       "ids": [],
                       "labels": [],
                       "masters": [],
                       "uuids": []
                   },
                   "model": null,
                   "partitions": {
                       "vda1": {
                           "holders": [],
                           "links": {
                               "ids": [],
                               "labels": [],
                               "masters": [],
                               "uuids": []
                           },
                           "sectors": "2048",
                           "sectorsize": 512,
                           "size": "1.00 MB",
                           "start": "2048",
                           "uuid": null
                       },
                       "vda2": {
                           "holders": [],
                           "links": {
                               "ids": [],
                               "labels": [],
                               "masters": [],
                               "uuids": [
                                   "0af452ba-dcea-4255-8d81-1d48b7f82d8c"
                               ]
                           },
                           "sectors": "819200",
                           "sectorsize": 512,
                           "size": "400.00 MB",
                           "start": "4096",
                           "uuid": "0af452ba-dcea-4255-8d81-1d48b7f82d8c"
                       },
                       "vda3": {
                           "holders": [
                               "vg_kvm11-swap",
                               "vg_kvm11-root"
                           ],
                           "links": {
                               "ids": [
                                   "lvm-pv-uuid-El2CWJ-3Y............."
                               ],
                               "labels": [],
                               "masters": [
                                   "dm-0",
                                   "dm-1"
                               ],
                               "uuids": []
                           },
                           "sectors": "7168000",
                           "sectorsize": 512,
                           "size": "3.42 GB",
                           "start": "823296",
                           "uuid": null
                       },
                       "vda4": {
                           "holders": [
                               "fieldwork-test"
                           ],
                           "links": {
                               "ids": [
                                   "lvm-pv-uuid-kDnlEs-N9..........."
                               ],
                               "labels": [],
                               "masters": [
                                   "dm-2"
                               ],
                               "uuids": []
                           },
                           "sectors": "614400",
                           "sectorsize": 512,
                           "size": "300.00 MB",
                           "start": "7991296",
                           "uuid": null
                       }
                   },
                   "removable": "0",
                   "rotational": "1",
                   "sas_address": null,
                   "sas_device_handle": null,
                   "scheduler_mode": "mq-deadline",
                   "sectors": "12582912",
                   "sectorsize": "512",
                   "size": "6.00 GB",
                   "support_discard": "512",
                   "vendor": "0x1af4",
                   "virtual": 1
               },
               "vdb": {
                   "holders": [],
                   "host": "",
                   "links": {
                       "ids": [],
                       "labels": [],
                       "masters": [],
                       "uuids": []
                   },
                   "model": null,
                   "partitions": {},
                   "removable": "0",
                   "rotational": "1",
                   "sas_address": null,
                   "sas_device_handle": null,
                   "scheduler_mode": "mq-deadline",
                   "sectors": "3145728",
                   "sectorsize": "512",
                   "size": "1.50 GB",
                   "support_discard": "512",
                   "vendor": "0x1af4",
                   "virtual": 1
               }
           },
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": false
   }