Re: [ansible-project] Retrieving items from a dictionary

[harry devine]

Thank you Vladimir!  I had already gotten the selectattr piece working but
the length check was the missing piece.  All good now.

Thanks,
Harry

On Wed, Sep 27, 2023, 3:32 PM Vladimir Botka  wrote:

> Map the attribute
>
>   dn: "{{ ansible_mounts|
>   selectattr('device', 'contains', 'nas-server.example.com')|
>   map(attribute='device') }}"
>
> If you want to skip empty lists test the length
>
>   - debug:
>   var: dn
> when: dn|length > 0
>
> --
> Vladimir Botka
>

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Re: [ansible-project] Retrieving items from a dictionary

[Vladimir Botka]

Map the attribute

  dn: "{{ ansible_mounts|
  selectattr('device', 'contains', 'nas-server.example.com')|
  map(attribute='device') }}"

If you want to skip empty lists test the length

  - debug:
  var: dn
when: dn|length > 0

-- 
Vladimir Botka

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[ansible-project] Retrieving items from a dictionary

[lift...@gmail.com]

I am trying to look at our server  mounts and only show those that have a 
specific mount available.  The playbook is as follows:

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

  tasks:


  - name: Get mount points
ansible.builtin.set_fact:
  device_names: "{{ ansible_mounts | selectattr('device', 'contains', 
'nas-server.example.com') | list }}"

  - name: List servers with those mount points
ansible.builtin.debug:
  msg: "{{ device_names }}"

I have 2 small issues with the output:
1) The device_names shows everything about that mount and I only want to 
show the device attribute;
2) Hosts that do not have the mount present show up in my debug list with 
an empty string.  I'd like to not show them at all if possible.

ok: [server1.example.com] => {
"msg": [
{
"block_available": 26201799211,
"block_size": 4096,
"block_total": 36234081792,
"block_used": 10032282581,
"device": "nas-server.example.com:/projects",
"fstype": "fuse.glusterfs",
"inode_available": 14493376449,
"inode_total": 14495510592,
"inode_used": 2134143,
"mount": "/projects",
"options": 
"rw,nodev,relatime,user_id=0,group_id=0,allow_other,max_read=131072",
"size_available": 107322569568256,
"size_total": 148414799020032,
"uuid": "N/A"
}
]
}
ok: [server2.example.com] => {
"msg": []
}

Thanks for any help,
Harry

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