Created
January 22, 2014 16:15
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#!/usr/bin/python | |
""" | |
Cobbler external inventory script | |
================================= | |
Ansible has a feature where instead of reading from /etc/ansible/hosts | |
as a text file, it can query external programs to obtain the list | |
of hosts, groups the hosts are in, and even variables to assign to each host. | |
To use this, copy this file over /etc/ansible/hosts and chmod +x the file. | |
This, more or less, allows you to keep one central database containing | |
info about all of your managed instances. | |
This script is an example of sourcing that data from Cobbler | |
(http://cobbler.github.com). With cobbler each --mgmt-class in cobbler | |
will correspond to a group in Ansible, and --ks-meta variables will be | |
passed down for use in templates or even in argument lines. | |
See http://ansible.github.com/api.html for more info | |
""" | |
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com> | |
# | |
# This file is part of Ansible, | |
# | |
# Ansible is free software: you can redistribute it and/or modify | |
# it under the terms of the GNU General Public License as published by | |
# the Free Software Foundation, either version 3 of the License, or | |
# (at your option) any later version. | |
# | |
# Ansible is distributed in the hope that it will be useful, | |
# but WITHOUT ANY WARRANTY; without even the implied warranty of | |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
# GNU General Public License for more details. | |
# | |
# You should have received a copy of the GNU General Public License | |
# along with Ansible. If not, see <http://www.gnu.org/licenses/>. | |
###################################################################### | |
import sys | |
import xmlrpclib | |
import shlex | |
from cobbler import utils | |
try: | |
import json | |
except: | |
import simplejson as json | |
# NOTE -- this file assumes Ansible is being accessed FROM the cobbler | |
# server, so it does not attempt to login with a username and password. | |
# this will be addressed in a future version of this script. | |
conn = xmlrpclib.Server(utils.local_get_cobbler_api_url(), allow_none=True) | |
################################################### | |
# executed with no parameters, return the list of | |
# all groups and hosts | |
if len(sys.argv) != 2 or sys.argv[1] not in ('--list','--host'): | |
print "Please specify --list or --host" | |
sys.exit(1) | |
if sys.argv[1] == '--list': | |
systems = conn.get_item_names('system') | |
groups = { 'ungrouped' : [] } | |
for system in systems: | |
data = conn.get_blended_data(None, system) | |
# Use the default hostname set for the host | |
dns_name = data["hostname"] | |
interfaces = data['interfaces'] | |
for (iname, ivalue) in interfaces.iteritems(): | |
if ivalue.get('management', False): | |
this_dns_name = ivalue.get("dns_name", "").strip() | |
if not this_dns_name: | |
this_dns_name = ivalue.get("ip_address","").strip() | |
if this_dns_name: | |
dns_name = this_dns_name | |
classes = data['mgmt_classes'] | |
for cls in classes: | |
if cls not in groups: | |
groups[cls] = [] | |
# hostname is not really what we want to insert, really insert the | |
# first DNS name but no further DNS names | |
if dns_name and dns_name not in groups[cls]: | |
groups[cls].append(dns_name) | |
else: | |
if dns_name and dns_name not in groups['ungrouped']: | |
groups['ungrouped'].append(dns_name) | |
print json.dumps(groups) | |
sys.exit(0) | |
##################################################### | |
# executed with a hostname as a parameter, return the | |
# variables for that host | |
elif sys.argv[1] == '--host': | |
if len(sys.argv) != 3: | |
print "you must specify a hostname when using --host" | |
sys.exit(1) | |
# look up the system record for the given DNS name | |
data = conn.find_system_by_dns_name(sys.argv[2]) | |
if not data: | |
print json.dumps({}) | |
sys.exit(1) | |
# return the ksmeta data for that system | |
metadata = data['ks_meta'] | |
tokens = shlex.split(metadata) | |
results = {} | |
for t in tokens: | |
if t.find("=") != -1: | |
(k,v) = t.split("=",1) | |
results[k]=v | |
print json.dumps(results) | |
sys.exit(0) |
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