Hi David,
Thank you very much for your response!
My understanding is that this solution requires that Ansible "visits" the
remote host to get the list of interfaces and their settings, including the
IPv4 address for each interface. For example, I would not be able to use it
to resolve "www.google.com" or any other arbitrary string, right?
Cheers,
/Sergey
On Monday, August 31, 2015 at 11:18:55 PM UTC-5, David Karban wrote:
>
> Hi Sergey,
>
> you can try something like:
> {% for host in groups['app_servers'] %}
> ACCEPT $FW int:{{ hostvars[host]['ansible_eth1']['ipv4']['address']
> }} tcp 80,443
> {% endfor %}
>
> Key think is hostvars variable.
>
> David Karban
> Linux server specialist/Specialista na správu linuxových serverů
> www.karban.eu
>
> 2015-09-01 6:04 GMT+02:00 Sergey Maslyakov <[email protected] <javascript:>
> >:
>
>> What is the right way to look up the IPv4 address (or addresses)
>> associated with a host name from global_vars?
>>
>> Here is the scenario. I use Postgres with Host-Based Authentication
>> (HBA). In order to configure HBA, I need to put* IP addresses* of the
>> permitted clients into the configuration file, but what I have as the input
>> are *host FQDNs* that I need to resolve somehow. What would be the best
>> way to do it in a Jinja2 template or within group_vars?
>>
>> I tried to use Python socket.gethostbyname() but I could not get the
>> syntax right.
>>
>> Granted, I can fall back to a shell script and templetize it outside of
>> Ansible/Jinja2 but I still hope to find a decent way to do it in Ansible.
>>
>>
>> Regards,
>> /Sergey
>>
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