Directory structure for huge ansible inventory file -

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our ansible inventory file getting bigger , bigger day day. wanted modularize directories , file. example. 

[webservers] foo.example.com bar.example.com  [dbservers] one.example.com two.example.com three.example.com

this can converted 

|--production |  |--webservers |  |  |--webservers |  |--dbservers |  |  |--dbservers

where webservers file;

[webservers] foo.example.com bar.example.com

and dbservers file;

[dbservers] one.example.com two.example.com three.example.com

for simple inventory file works fine. problem comes when create group of groups.

like 

[webservers] foo.example.com bar.example.com  [dbservers] one.example.com two.example.com three.example.com  [master:children] webservers dbservers

i cant imagine directory structure , it. can please guide me right tutorial. thanks

ansible supports "dynamic inventories" can read more in here: http://docs.ansible.com/ansible/developing_inventory.html

what it:

simple script (python, ruby, shell etc) produces json in specific format.

how can benefit it:

create folder structure best reflects needs, , place servers config in there. create simple executable file read files , output result.

example:

inventory.py:

#!/usr/bin/python  import yaml import json  web = yaml.load(open('web.yml', 'r'))  inventory = { '_meta': { 'hostvars': {} } }  # individual server configuration server, properties in web['servers'].iteritems():   inventory['_meta']['hostvars'][server] = {}   inventory['_meta']['hostvars'][server]['ansible_ssh_host'] = properties['ip']  # magic group servers inventory['all'] = {} inventory['all']['hosts'] = web['servers'].keys()  # groups of servers if 'groups' in web:   group, properties in web['groups'].iteritems():     inventory[group] = {}     inventory[group]['hosts'] = web['groups'][group]  print json.dumps(inventory, indent=2)
web.yml 
--- servers:   foo:     ip: 192.168.42.10   bar:     ip: 192.168.42.20  groups:   webservers:   - foo   dbservers:   - bar

then call playbook usuall , same result if use standart ini file.


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