Thanks Karl, for your reply. Problem statement ::-

My job is to find out the hostname which belongs to hostclass ess, which in 
this case the answer is host002.

hostinfo:
  'host001':
    ip: 192.168.43.10
    hostclass: 'puppet'
  'host002':
    ip: 192.168.43.11
    hostclass: 'ess'
  'host003':
    ip: 192.168.43.21
    hostclass: 'mdb'


i got one solution from some friend in google ansible groups only, but i am 
unable to fit it my ansible playbook.


- debug:
    msg: "{{ hostinfo|dictsort|selectattr('1.hostclass', 'equalto', 
'ess')|first|first }}"


The playbook i am writing, which is wrong but i am not able to figure out 
how to fit the code in my playbook. Can anyone help me in modifying the 
code of mine.

---

- hosts: somehost
  gather_facts: no
  vars_files:
    file: sometext.yaml
    name: sometext

  - debug:
        msg: "{{ hostinfo|dictsort|selectattr('1.hostclass', 'equalto', 
'ess')|first|first }}


On Thursday, April 12, 2018 at 5:52:14 PM UTC+5:30, Karl Auer wrote:
>
> Can I suggest that you describe what you want to achieve. That is, 
> describe the end result that you are seeking.
>
> That is more likely to get a useful response.
>
> Regards, K.
>
>
> On Thu, Apr 12, 2018 at 9:58 PM, Bishwajit Samanta <
> bishwajits...@gmail.com <javascript:>> wrote:
>
>> Any one can suggest any idea please..
>>
>> On Thursday, April 12, 2018 at 8:21:32 AM UTC+5:30, Bishwajit Samanta 
>> wrote:
>>>
>>> Hi all,
>>>
>>> I am a beginner in ansible. If anyone can help me in finding the answer. 
>>> It would be great. My problem was finding a phrase in ansible which one of 
>>> the person have helped me. But unfortunately i am not able to fit the piece 
>>> of code in my playbook.
>>>
>>> hostinfo:
>>>   host001':
>>>     ip: 192.168.43.10
>>>     hostclass: 'puppet'
>>>   'host002':
>>>     ip: 192.168.43.11
>>>     hostclass: 'ess'
>>>   'host003':
>>>     ip: 192.168.43.21
>>>     hostclass: 'mdb'
>>>
>>> the code was::
>>>
>>> - debug: 
>>>   msg: "{{ hostinfo|dictsort|selectattr('1.hostclass', 'equalto', 
>>> 'ess')|first|first }}"
>>>
>>> Now i am writing the code as given below. I know in this piece of code i 
>>> am making mistakes. But since i am a beginner i am not able to understand 
>>> it. Can anyone help me?
>>>
>>> ---
>>> - hosts: test
>>>   gather_facts: no 
>>>
>>> - debug: 
>>>   msg: "{{ hostinfo|dictsort|selectattr('1.hostclass', 'equalto', 
>>> 'ess')|first|first }}"
>>>
>>> -- 
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>
>
> -- 
> Karl Auer
>
> Email  : ka...@2pisoftware.com <javascript:>
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