#!/usr/bin/env python """ Vagrant external inventory script. Automatically finds the IP of the booted vagrant vm(s), and returns it under the host group 'vagrant' Example Vagrant configuration using this script: config.vm.provision :ansible do |ansible| ansible.playbook = "./provision/your_playbook.yml" ansible.inventory_file = "./provision/inventory/vagrant.py" ansible.verbose = true end """ # Copyright (C) 2013 Mark Mandel <mark@compoundtheory.com> # 2015 Igor Khomyakov <homyakov@gmail.com> # # This program 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. # # This program 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 this program. If not, see <http://www.gnu.org/licenses/>. # # Thanks to the spacewalk.py inventory script for giving me the basic structure # of this. # import sys import os.path import subprocess import re from paramiko import SSHConfig from cStringIO import StringIO from optparse import OptionParser from collections import defaultdict try: import json except: import simplejson as json _group = 'vagrant' # a default group _ssh_to_ansible = [('user', 'ansible_ssh_user'), ('hostname', 'ansible_ssh_host'), ('identityfile', 'ansible_ssh_private_key_file'), ('port', 'ansible_ssh_port')] # Options # ------------------------------ parser = OptionParser(usage="%prog [options] --list | --host <machine>") parser.add_option('--list', default=False, dest="list", action="store_true", help="Produce a JSON consumable grouping of Vagrant servers for Ansible") parser.add_option('--host', default=None, dest="host", help="Generate additional host specific details for given host for Ansible") (options, args) = parser.parse_args() # # helper functions # # get all the ssh configs for all boxes in an array of dictionaries. def get_ssh_config(): return dict((k, get_a_ssh_config(k)) for k in list_running_boxes()) # list all the running boxes def list_running_boxes(): output = subprocess.check_output(["vagrant", "status"]).split('\n') boxes = [] for line in output: matcher = re.search("([^\s]+)[\s]+running \(.+", line) if matcher: boxes.append(matcher.group(1)) return boxes # get the ssh config for a single box def get_a_ssh_config(box_name): """Gives back a map of all the machine's ssh configurations""" output = subprocess.check_output(["vagrant", "ssh-config", box_name]) config = SSHConfig() config.parse(StringIO(output)) host_config = config.lookup(box_name) # man 5 ssh_config: # > It is possible to have multiple identity files ... # > all these identities will be tried in sequence. for id in host_config['identityfile']: if os.path.isfile(id): host_config['identityfile'] = id return dict((v, host_config[k]) for k, v in _ssh_to_ansible) # List out servers that vagrant has running # ------------------------------ if options.list: ssh_config = get_ssh_config() meta = defaultdict(dict) for host in ssh_config: meta['hostvars'][host] = ssh_config[host] print(json.dumps({_group: list(ssh_config.keys()), '_meta': meta})) sys.exit(0) # Get out the host details # ------------------------------ elif options.host: print(json.dumps(get_a_ssh_config(options.host))) sys.exit(0) # Print out help # ------------------------------ else: parser.print_help() sys.exit(0)