Better:
groups['web'] | default([]) | length
On Friday, September 16, 2022 at 6:50:22 AM UTC-4 Todd Lewis wrote:
> Can you add
> when: groups['web'] | length
> onto the "populate secret for use elsewhere" task?
>
> On Friday, September 16, 2022 at 5:34:37 AM UTC-4 [email protected] wrote:
>
>> Hi
>>
>> I have a playbook that contains several plays. One play is performing API
>> related tasks in AWS, so it's using the local connection and localhost. The
>> plays after that targets real hosts.
>> Pseudo code:
>>
>> - name: do API related work
>> hosts: localhost
>> connection: local
>> become: false
>> gather_facts: false
>> tags: api
>> tasks:
>> - name: populate secret for use elsewhere
>> community.aws.aws_secret:
>> name: foopass
>> secret: "{{ hostvars[groups['web'][0]].foopass }}"
>>
>> - name: deploy web servers
>> hosts: web
>> tasks:
>> - name: save secret
>> copy:
>> dest: foopass.txt
>> content: "{{ foopass }}"
>>
>>
>> This play works, but I don't know how to selectively run the API play if
>> there are no web servers in the play (as they might not exist yet).
>> If I try '-i localhost, --connection local', then the API task doesn't
>> find any hostvars for a 'web' host:
>>
>> TASK [populate secret for use elsewhere]
>> ***************************************************************************************************************
>> fatal: [localhost]: FAILED! =>
>> msg: '{{ hostvars[groups[''web''][0]].foopass }}: ''dict object'' has
>> no attribute ''web'''
>>
>> This seems to make sense. But how would I go about accessing those vars?
>> Is it possible at all to access variables for hosts that are NOT in the
>> current play?
>>
>> FYI the variable is not gathered (again, because the web host is not yet
>> there), it is defined in group_vars/web/main.yml - so it is there on disk.
>>
>> Thanks!
>>
>> Dick Visser
>>
>>
>>
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