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]
> <javascript:>> 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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>
> >>
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