I think there's an typo here. There's an extra 't' in list_of_servers: "{{
tarr|flatten }}" should be
list_of_servers: "{{ arr|flatten }}"
On Tue, Jul 12, 2022, 14:24 Softmax23 <maximefouach...@gmail.com> wrote:
> When i do
> arr: "{{ servers|dict2items|
> groupby('value')|
> map(attribute=1)|
> map('map', attribute='key')|
> list }}"
> list_of_servers: "{{ tarr|flatten }}"
> tasks:
> - debug:
> var: arr
>
> the result , no data.
>
> TASK [debug]
> ******************************************************************************************************************************
> ok: [localhost] => {
> "arr": "[<generator object do_map at 0x7f1c51cac4a0>, <generator
> object do_map at 0x7f1c51cac9e0>,
> <generator object do_map at 0x7f1c51caca50>]"
> }
>
>
>
> On Tuesday, July 12, 2022 at 11:59:52 AM UTC+2 vbo...@gmail.com wrote:
>
>> On Tue, 12 Jul 2022 02:18:57 -0700 (PDT)
>> Softmax23 <maximef...@gmail.com> wrote:
>>
>> For example, the playbook below
>>
>> shell> cat pb.yml
>> - hosts: localhost
>> vars:
>> servers:
>> srv01: a
>> srv02: a
>> srv03: a
>> srv04: b
>> srv05: b
>> srv06: b
>> srv07: c
>> srv08: c
>> srv09: c
>> arr: "{{ servers|dict2items|
>> groupby('value')|
>> map(attribute=1)|
>> map('map', attribute='key')|
>> list }}"
>> list_of_servers: "{{ tarr|flatten }}"
>> tasks:
>> - set_fact:
>> tarr: "{{ tarr|d(arr.0)|zip(item)|map('flatten') }}"
>> loop: "{{ arr[1:] }}"
>> - debug:
>> var: list_of_servers[:5]|to_yaml
>>
>> 1) Creates the matrix
>>
>> arr:
>> - [srv01, srv02, srv03]
>> - [srv04, srv05, srv06]
>> - [srv07, srv08, srv09]
>>
>> 2) Transpose the matrix
>>
>> tarr:
>> - [srv01, srv04, srv07]
>> - [srv02, srv05, srv08]
>> - [srv03, srv06, srv09]
>>
>> 3) Get the slice
>>
>> list_of_servers[:5]: [srv01, srv04, srv07, srv02, srv05]
>>
>> --
>> Vladimir Botka
>>
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