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azk avatar Server

Ansible - can't refer to module parameter value

ph flag
azk

This is my playbook

---
- hosts: mytestserver
  become: true
  become_method: sudo
  gather_facts: true

  vars:
  # To get vgname and lvname from ansible_mounts's device 
    mt: "{{ MT }}" #Extravariable
    disp_pth: "{{ item['device'] }}"
    disp_tmp: "{{ disp_pth | basename }}"
    DISP: "{{ disp_tmp.split('-') }}"
    VGname: "{{ DISP.0 }}"
    LVname1: "{{ DISP.1 }}"
    DISPP2: "{{ DISP.3|default('') }}"
    LVname2: "{{ DISP.1 }}-{{ DISPP2 }}"
    LVname: "{{ LVname2 if (disp_tmp | regex_search('--')) else LVname1 }}"


  tasks:
    - name: Get filesystem values
      lvol:
        vg: "{{ VGname }}"
        lv: "{{ LVname }}"
      with_items: "{{ ansible_mounts }}"
      when: item.mount == MT
      register: myfs

    - debug:
        var: myfs

When I excecute it:

$ ansible-playbook -i proyects/Inventory/awx_hosts -l mytestserver getlvmfacts.yml -e MT=/DATA

I get the values:

PLAY [mytestserver] ******************************************************************************************************************************************************************************************************************

TASK [Gathering Facts] ******************************************************************************************************************************************************************************************************************
ok: [mytestserver]

TASK [Get filesystem values] ************************************************************************************************************************************************************************************************************
ok: [mytestserver] => (item={'block_used': 21620, 'uuid': '7fef92b8-8157-43d1-92b4-525a56fa33f8', 'size_total': 1056858112, 'block_total': 258022, 'mount': '/DATA', 'block_available': 236402, 'size_available': 968302592, 'fstype': 'ext4', 'inode_total': 65536, 'options': 'rw', 'device': '/dev/mapper/vgAPP-DATA', 'inode_used': 11, 'block_size': 4096, 'inode_available': 65525})

TASK [debug] ****************************************************************************************************************************************************************************************************************************
ok: [mytestserver] => {
    "myfs": {
        "changed": false,
        "msg": "All items completed",
        "results": [
            {
                "ansible_loop_var": "item",
                "changed": false,
                "item": {
                    "block_available": 414770,
                    "block_size": 4096,
                    "block_total": 516052,
                    "block_used": 101282,
                    "device": "/dev/mapper/vg00-lvol01",
                    "fstype": "ext3",
                    "inode_available": 124211,
                    "inode_total": 131072,
                    "inode_used": 6861,
                    "mount": "/",
                    "options": "rw",
                    "size_available": 1698897920,
                    "size_total": 2113748992,
                    "uuid": "7df9171b-c31f-434f-94c5-344d02775e89"
                },
                "skip_reason": "Conditional result was False",
                "skipped": true
            },
            {
                "ansible_loop_var": "item",
                "changed": false,
                "item": {
                    "block_available": 1037688,
                    "block_size": 4096,
                    "block_total": 1046016,
                    "block_used": 8328,
                    "device": "/dev/mapper/vgDATA-BASET--DATA1",
                    "fstype": "xfs",
                    "inode_available": 4194301,
                    "inode_total": 4194304,
                    "inode_used": 3,
                    "mount": "/BASET/DATA1",
                    "options": "rw",
                    "size_available": 4250370048,
                    "size_total": 4284481536,
                    "uuid": "91689e9b-552c-4f0e-b0ec-0d3d25154a72"
                },
                "skip_reason": "Conditional result was False",
                "skipped": true
            },
            {
                "ansible_loop_var": "item",
                "changed": false,
                "failed": false,
                "invocation": {
                    "module_args": {
                        "active": true,
                        "force": false,
                        "lv": "DATA",
                        "opts": null,
                        "pvs": null,
                        "resizefs": false,
                        "shrink": true,
                        "size": null,
                        "snapshot": null,
                        "state": "present",
                        "thinpool": null,
                        "vg": "vgAPP"
                    }
                },
                "item": {
                    "block_available": 236402,
                    "block_size": 4096,
                    "block_total": 258022,
                    "block_used": 21620,
                    "device": "/dev/mapper/vgAPP-DATA",
                    "fstype": "ext4",
                    "inode_available": 65525,
                    "inode_total": 65536,
                    "inode_used": 11,
                    "mount": "/DATA",
                    "options": "rw",
                    "size_available": 968302592,
                    "size_total": 1056858112,
                    "uuid": "7fef92b8-8157-43d1-92b4-525a56fa33f8"
                },
                "lv": "DATA",
                "size": 1024.0,
                "vg": "vgAPP"
            },
            {
                "ansible_loop_var": "item",
                "changed": false,
                "item": {
                    "block_available": 472667,
                    "block_size": 4096,
                    "block_total": 516052,
                    "block_used": 43385,
                    "device": "/dev/mapper/vg00-lvol07",
                    "fstype": "ext3",
                    "inode_available": 131061,
                    "inode_total": 131072,
                    "inode_used": 11,
                    "mount": "/tivoli",
                    "options": "rw",
                    "size_available": 1936044032,
                    "size_total": 2113748992,
                    "uuid": "2310d046-eaad-4419-a94b-197c2c56502c"
                },
                "skip_reason": "Conditional result was False",
                "skipped": true
            }
        ]
    }
}

To the end of the matched mount point (/DATA) there are three filesystems parameters:

"lv": "DATA",
"size": 1024.0,
"vg": "vgAPP"

The question is: How can I refer to this parameters?

I have tried using myfs.lv but don't work and varius more ways. I think this is because those aren't inside 'item'

Desired: using somthing like "myfs.lv" and get "DATA"

hope you can help. Thanks in advance!

184
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Score:1
flowerysong avatar Server
th flag
flowerysong

If you refer to the structure that debug outputs you can see that myfs.lv is clearly wrong, because the only keys at the top level are msg, changed, and results.

When you run a task in a loop, the results are stored as a list under the results key of the registered variable. To access that particular result, you would do something like myfs.results.2.lv.

Hardcoding an index like this is generally not what you want, though, so you should instead do something to select the result you want. (myfs.results | reject('skipped') | list | first).lv would retrieve lv for the first non-skipped result.

Or, of course, you could make this easier on yourself by not looping in the first task:

  tasks:
    - name: Get filesystem values
      lvol:
        vg: "{{ mount_dev_split.0 }}"
        lv: "{{ mount_dev_split.1 ~ lv_name_suffix }}"
      vars:
        mount_dev: "{{ (ansible_facts.mounts | selectattr('mount', 'equalto', MT) | list).0.device }}"
        mount_dev_split: "{{ (mount_dev | basename).split('-') }}"
        lv_name_suffix: "{{ ('-' ~ mount_dev_split.3 | default('')) if '--' in mount_dev else '' }}"
      register: myfs

    - debug:
        msg: "{{ myfs.lv }}"
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azk avatar
ph flag
azk
Well. First of all thank you very much!
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azk avatar
ph flag
azk
Well. First of all thank you very much! You made it much easier this way. I'm new to Ansible and there're elements I don't handle. I appreciate your help. Thanks again!
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