- hosts: localhost
gather_facts: yes
vars:
top_level:
Fedora:
key: value
tasks:
- debug:
msg: "{{ top_level[ansible_distribution]['key'] }}"
On Thu, Jun 25, 2020 at 3:22 PM Willem Bos <[email protected]> wrote:
>
> Hi Martin,
>
> Thanks for your quick response, really appreciate it. I hope you don't mind
> an additional question: the vars section actually is one level deeper:
>
> vars:
> sshd:
> CentOS:
> ciphers: "a,b"
> hostkeys:
> - "ssh_host_key"
> - "ssh_rsa_host_key"
>
> How do I add this to:
> {% for hostkey in lookup('vars', ansible_distribution)['hostkeys'] %}
> {{ hostkey }}
> {% endfor %}
>
> I tried ['sshd']lookup('vars', ansible_distribution)['hostkeys'] and a few
> variants, but they all fail.
>
> Sorry for being such a noob, but accessing vars/lists/dicts/etc. always gives
> me major headaches :-)
>
> Regards,
> Willem.
>
>
>
>
>
> On Thursday, June 25, 2020 at 2:19:03 PM UTC+2, Martin Krizek wrote:
>>
>> Sorry, I misread your example and missed that the variable you want to
>> look up is a dictionary and that you want to access a key within that
>> dictionary. In that case you need to look up just the var and access
>> the key on the result of the lookup:
>>
>> - hosts: localhost
>> gather_facts: yes
>> vars:
>> Fedora:
>> key: value
>> tasks:
>> - debug:
>> msg: "{{ lookup('vars', ansible_distribution)['key'] }}"
>>
>> On Thu, Jun 25, 2020 at 1:47 PM Willem Bos <[email protected]> wrote:
>> >
>> > Hi Martin,
>> >
>> > Thanks, but I'm not sure varnames is useful to me.
>> >
>> > I know what the variable is called, but don't know how to construct it
>> > programmatically (as the Ansible manual calls it). Taking the example code
>> > from the documentation results in an empty list:
>> >
>> > ...
>> > - debug:
>> > msg: "{{ lookup('varnames', ansible_distribution + '.hostkeys') }}"
>> > ...
>> > TASK [debug] *******
>> > ok: [localhost] => {
>> > "msg": []
>> > }
>> > ...
>> >
>> > Regards,
>> > Willem.
>> >
>> >
>> > On Wednesday, June 24, 2020 at 2:39:52 PM UTC+2, Martin Krizek wrote:
>> >>
>> >> You can use the varnames lookup to get variable names that match given
>> >> pattern:
>> >> https://docs.ansible.com/ansible/latest/plugins/lookup/varnames.html
>> >>
>> >> On Wed, Jun 24, 2020 at 12:33 PM Willem Bos <[email protected]> wrote:
>> >> >
>> >> > Hi,
>> >> >
>> >> > The playbook below should generate a file with the content:
>> >> > a,b
>> >> > ssh_host_key
>> >> > ssh_rsa_host_key
>> >> >
>> >> > However, the way I construct the variable names results in either
>> >> > syntax/templating errors or 'variable name does not exists'.
>> >> >
>> >> > ---
>> >> > - hosts: localhost
>> >> > connection: local
>> >> >
>> >> > vars:
>> >> > CentOS:
>> >> > ciphers: "a,b"
>> >> > hostkeys:
>> >> > - "ssh_host_key"
>> >> > - "ssh_rsa_host_key"
>> >> > tasks:
>> >> > - copy:
>> >> > dest: "{{ playbook_dir }}/test.out"
>> >> > content: |
>> >> >
>> >> > # This works:
>> >> > {{ CentOS.ciphers }}
>> >> >
>> >> > # This results in 'No variable found with this name':
>> >> > {# Ciphers {{ lookup('vars', ansible_distribution + '.ciphers')
>> >> > }}
>> >> >
>> >> > # Templating errors:
>> >> > {% for hostkey in {{ lookup('vars', ansible_distribution +
>> >> > '.hostkeys') }} %}
>> >> > {{ hostkey }}
>> >> > {% endfor %}
>> >> >
>> >> > # Templating errors:
>> >> > {% for hostkey in {{
>> >> > hostvars[inventory_hostname][ansible_distribution + '.hostkeys'] }} %}
>> >> > {{ hostkey }}
>> >> > {% endfor %}
>> >> >
>> >> >
>> >> > What is the proper way to 'assemble' the variable names? Or is there a
>> >> > better way of doing this?
>> >> >
>> >> > Regards,
>> >> > Willem.
>> >> >
>> >> > --
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>> >> > https://groups.google.com/d/msgid/ansible-project/76b24a20-1c5b-46ea-a197-f1c390fcd0f7o%40googlegroups.com.
>> >>
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>>
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