On Thu, 26 Mar 2020 20:02:47 +0100
Vladimir Botka <vbo...@gmail.com> wrote:

> 
> The playbook below
> 
> - name: test with json_query 1/2
>   hosts: localhost
>   vars:
>     domain_definition:
>       - name: server11
>         cluster: cluster1
>         port: '8080'
>       - name: server12
>         cluster: cluster2
>         port: '8090'
>       - name: server21
>         cluster: cluster3
>         port: '9080'
>       - name: server22
>         cluster: cluster4
>         port: '9090'
>   tasks:
>     - debug:
>         msg: "{{ domain_definition| 
>                  json_query('[?name==`server21`].port') }}"
> 
> gives
> 
>     "msg": [
>         "9080"
>     ]
> 
> HTH,
> 
>       -vlado

"selectattr" below gives the same result

    - debug:
        msg: "{{ domain_definition| 
                 selectattr('name', 'regex', '^server21$')|
                 map(attribute= 'port')|
                 list }}"

HTH,

        -vlado

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