The real goal here is to perform an action only when at least one of
*inventory_hostname* groups from *group_names* matches one group from
another list of groups (in this example: ```git|local|ntopng```) .
This is defined within a *role*, so I cannot use the list ``` - hosts:```.
For instance, to print all hostname variables only when inventory_hostname
belong to at least one of git,local or ntopng groups,I tried this:
- name: Print all variables for "{{ inventory_hostname }}" system device
(except any role parameters)
debug:
var: hostvars[inventory_hostname]
when: group_names | map('regex_search', "^(git|local|ntopng)$") | list |
length > 0
It does not work as expected, because the length always returns the number
of groups within group_names. It seems that length considers a null element
as defined and counts it.
"is defined" does not work either for the same reason.
I cannot find a way to test if *at least one element of the search is not
null*.
Any suggestion?
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