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Script for converting Ansible dynamic inventory to static files. It's not perfect, but it'll get you 90% of the way there.
#!/usr/bin/env python
# Converts Ansible dynamic inventory sources to static files
# Input is received via stdin from the dynamic inventory file
# ex:
# ec2.py --list | ansible-dynamic-inventory-converter.py
import json
import os
import sys
import pyaml
def add_vars(_type, _id, variables):
assert _type == "group" or _type == "host"
dir_name = "./%s_vars" % _type
if not os.path.isdir(dir_name):
os.mkdir(dir_name)
with open('%s/%s' % (dir_name, _id), 'a') as fh:
fh.write(pyaml.dump(variables))
def add_host_vars(host, variables):
add_vars('host', host, variables)
def add_group_vars(group, variables):
add_vars('group', group, variables)
def main():
raw_json = sys.stdin.read()
inventory = json.loads(raw_json)
inventory_filename = "./hosts"
with open(inventory_filename, 'a') as fh:
for group in inventory:
if group == "_meta":
for host, variables in inventory[group]["hostvars"].iteritems():
add_host_vars(host, variables)
if "vars" in inventory[group]:
add_group_vars(group, inventory[group]["vars"])
if "hosts" in inventory[group]:
fh.write("[%s]\n" % group)
for host in inventory[group]["hosts"]:
fh.write("%s\n" % host)
fh.write("\n")
if "children" in inventory[group]:
fh.write("[%s:children]\n" % group)
for child in inventory[group]["children"]:
fh.write("%s\n" % child)
fh.write("\n")
if __name__ == '__main__':
main()
@sudoer

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sudoer commented May 13, 2016

I ended up just dumping the inventory to a plain text file, and then making a 1-line executable bash script that just does cat inventory.txt. Since the script is executable, Ansible expects the inventory in dynamic JSON format, and it "just works". I suppose I'm just turning my plain text file into a "static dynamic inventory". Thanks for sharing this script, which was enough to get the creative juices flowing.

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