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[Punit Jain]

Hi,

I have a fact as below:

"dns_parsed": [

    "10.4.3.2"

]

and another fact as:

"actual_config": {

    "dns": {

        "domains": ['test.com'],

        "servers": []

      }

 }

I want to update actual_config to make it:

"actual_config": {

    "dns": {

        "domains": ['test.com'],

        "servers": ["10.4.3.2"]

      }

 }

my playbook part to accomplish this:

- name: merge dns data

  set_fact:

    actual_config: "{{ actual_config.dns.servers | union(dns_parsed) }}"

- debug:

  var=actual_config

however it removes all other keys from actual_config.

"actual_config": [

      "10.4.3.2"

]

Any clue how to make it work ? 

Thanks and Regards,

Punit

    

[Dick Visser]

You’re setting a dict to one of its own keys - I think that doesn’t work or at least results in nothing. But the union of that and dns_parsed will be the dns_parsed.

You could look into the ‘combine’ filter to overwrite a specific key. 

Dick

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[Dick Visser]

On Thu, 20 Jun 2019 at 12:14, Dick Visser <dick....@geant.org> wrote:
>
> You’re setting a dict to one of its own keys - I think that doesn’t work or at least results in nothing. But the union of that and dns_parsed will be the dns_parsed.
>
> You could look into the ‘combine’ filter to overwrite a specific key.

My first assumption was wrong. But the combine filter is the way,
you'd have to use the recursive option and create the containing dict,
like this:


- set_fact:
actual_config: "{{ actual_config | combine({'dns': {
'servers': dns_parsed }}, recursive=True) }}"

Dick

[Punit Jain]

Thanks Dick works !!!

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