Ansible: when: inventory_hostname in {{ groups['group'] }} does not work with dynamic inventory
I created https://github.com/eparis/ansible-inventory-bug to show exactly what I mean with a clean reproducer which anyone can run locally. It has both a 'dynamic' inventory and a static inventory.
(For 'dynamic' it really is just catting in some json, but it shows the problem clearly)
With a static inventory file when: inventory_hostname in {{ groups['group'] }} works just fine. But with dynamic inventory it fails with what looks like some python localization/string handling mess...
eparis
All 3 comments
So just did a lot of experimenting and found
Works:
when: inventory_hostname in groups['group']
Fails:
when: inventory_hostname in {{ groups['group'] }}
So it is the extra set of {{ }} that causes the problem. Although I don't know why it works for static but not for dynamic.
eparis
on 24 Jun 2015
You should not use {{ }} in when (we should actually make this an error), the reason that the static/dynamic works a bit differently here seems to be because of the type of object returned in the end, list vs unicode string.
bcoca
on 27 Jun 2015
closing as per above
bcoca
on 23 Jan 2017
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Most helpful comment
So just did a lot of experimenting and found
Works:
when: inventory_hostname in groups['group']Fails:
when: inventory_hostname in {{ groups['group'] }}So it is the extra set of {{ }} that causes the problem. Although I don't know why it works for static but not for dynamic.