Position of a host inside an inventory group

[Alejandro Comisario]

Hi everyone, so happy to be here, this is my first post.

Here's what i need.

I have two groups:

[group_master]

host1

host2

host3

[group_slaves]

host4

host5

host6

i need to create a template that reflect a pair of "couples" like 

host1 and host4

host2 and host4

host3 and host6

for that i thought going through the group_master and then do something like this on the template.

possition_in_the_group = ANSIBLE_VARIABLE_THAT_DONT_KNOW_IF_EXISTS

master = {{ ansible_hostname }}

slave = {{ groups['group_slaves'][possition_in_the_group] }}

so, can i know through a simple variable and not having to jinja "script" to know it, the position of the host im running the task on, has in the group it belongs ?

thanks so much !

[Brian Coca]

i think you want:
groups['group_slaves'][groups['group_masters].index(inventory_hostname)]

supposing you are using hosts: group_masters, reverse it if you are
looping through slaves.

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--
Brian Coca

[Alejandro Comisario]

Brian, that's exactly what i needed !!

thanks so much !