Get other group variables

[geoffre...@gmail.com]

Hello everyone !

I'm digging into Ansible capabilities a bit further, and I'm looking to implement with a beautiful manner the concept of VIP.
To do so, I implemented this variable in the group_vars of my inventory:

group_vars/firstcluster :

vips:
  - name: cluster1_vip
    ip : 1.2.3.4
  - name: cluster1.othervip
    ip : 1.2.3.5

group_vars/secondcluster :

vips:
  - name: cluster2_vip
    ip : 1.2.4.4
  - name: cluster2.othervip
    ip : 1.2.4.5

and in the inventory :

[firstcluster]
node10
node11

[secondcluster]
node20
node21

My question : if I want to set up a DNS server, that gathers all the VIP and associated names (without redundancy for esthetism) , how do I proceed ? In short : is it possible to get all group variables notwithstanding the hosts underneath ?

like :

{% for group in <THEMAGICVAR> %}
{% for vip in group.vips %}
{{ vip.name }}      IN A     {{ vip.ip }}
{% end for %}
{% end for %}

Thank you very much !

-- Geoff

[Brian Coca]

once the inventory is `compiled` there are not group vars, just host
vars, but you can get it by using any host in the group (as long as
you don't override them per host).

{% for group in <THEMAGICVAR> %}

{% for vip in hostvars[groups[group][0]]['vips'] %}

{{ vip.name }} IN A {{ vip.ip }}
{% end for %}
{% end for %}

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--
Brian Coca

[Mike Biancaniello]

You could also create a VIP list in 'all' and then reference them in the group_vars:

group_vars/all/vips:

all_vips:

  - name: cluster1_vip
    ip : 1.2.3.4

    otherattr: yes
  - name: cluster1_othervip
    ip : 1.2.3.5
    otherattr: yes
  - name: cluster2_vip
    ip : 1.2.4.4
    otherattr: yes
  - name: cluster2_othervip
    ip : 1.2.4.5
    otherattr: yes

group_vars/firstcluster:

vips:
  - cluster1_vip
  - cluster1_othervip

group_vars/secondcluster:

vips:
  - cluster2_vip
  - cluster2_othervip

templates/zone.j2

{% for vip in all_vips %}

{{ vip.name }}      IN A     {{ vip.ip }}
{% end for %}

templates/vips.j2

{% for vip_name in vips %}
{% for vip in all_vips|selectattr("name", "equalto", vip_name) %}
virtual server {{ vip.name }} {{ vip.ip }}
{% endfor %}{# vip #}
{% endfor %}{# vip_name #}