Refactored.

Paramiko module is used to parse ssh_config.
Added multi-vm support
Added "_meta" element https://docs.ansible.com/ansible/developing_inventory.html#tuning-the-external-inventory-script
This commit is contained in:
Igor Khomyakov 2015-07-21 17:55:25 +03:00
parent 827b0443c8
commit 8113409d34

View file

@ -13,6 +13,7 @@ Example Vagrant configuration using this script:
"""
# 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
@ -33,17 +34,26 @@ Example Vagrant configuration using this script:
#
import sys
import os.path
import subprocess
import re
import string
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",
@ -56,19 +66,13 @@ parser.add_option('--host', default=None, dest="host",
# helper functions
#
# get all the ssh configs for all boxes in an array of dictionaries.
def get_ssh_config():
configs = []
return {k: get_a_ssh_config(k) for k in list_running_boxes()}
boxes = list_running_boxes()
for box in boxes:
config = get_a_ssh_config(box)
configs.append(config)
return configs
#list all the running boxes
# list all the running boxes
def list_running_boxes():
output = subprocess.check_output(["vagrant", "status"]).split('\n')
@ -79,54 +83,47 @@ def list_running_boxes():
if matcher:
boxes.append(matcher.group(1))
return boxes
#get the ssh config for a single box
# 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]).split('\n')
output = subprocess.check_output(["vagrant", "ssh-config", box_name])
config = SSHConfig()
config.parse(StringIO(output))
host_config = config.lookup(box_name)
config = {}
for line in output:
if line.strip() != '':
matcher = re.search("( )?([a-zA-Z]+) (.*)", line)
config[matcher.group(2)] = matcher.group(3)
return config
# 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 {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()
hosts = { 'vagrant': []}
meta = defaultdict(dict)
for data in ssh_config:
hosts['vagrant'].append(data['HostName'])
for host in ssh_config:
meta['hostvars'][host] = ssh_config[host]
print json.dumps(hosts)
print json.dumps({_group: list(ssh_config.keys()), '_meta': meta})
sys.exit(0)
# Get out the host details
#------------------------------
# ------------------------------
elif options.host:
result = {}
ssh_config = get_ssh_config()
details = filter(lambda x: (x['HostName'] == options.host), ssh_config)
if len(details) > 0:
#pass through the port, in case it's non standard.
result = details[0]
result['ansible_ssh_port'] = result['Port']
print json.dumps(result)
print json.dumps(get_a_ssh_config(options.host))
sys.exit(0)
# Print out help
#------------------------------
# ------------------------------
else:
parser.print_help()
sys.exit(0)