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110 lines
3 KiB
Python
Executable file
110 lines
3 KiB
Python
Executable file
#!/usr/bin/env python
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"""
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fleetctl base external inventory script. Automatically finds the IPs of the booted coreos instances and
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returns it under the host group 'coreos'
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"""
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# Copyright (C) 2014 Andrew Rothstein <andrew.rothstein at gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Thanks to the vagrant.py inventory script for giving me the basic structure
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# of this.
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#
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import sys
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import subprocess
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import re
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import string
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from optparse import OptionParser
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try:
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import json
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except:
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import simplejson as json
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# Options
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# ------------------------------
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parser = OptionParser(usage="%prog [options] --list | --host <machine>")
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parser.add_option('--list', default=False, dest="list", action="store_true",
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help="Produce a JSON consumable grouping of servers in your fleet")
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parser.add_option('--host', default=None, dest="host",
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help="Generate additional host specific details for given host for Ansible")
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(options, args) = parser.parse_args()
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#
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# helper functions
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#
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def get_ssh_config():
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configs = []
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for box in list_running_boxes():
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config = get_a_ssh_config(box)
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configs.append(config)
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return configs
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# list all the running instances in the fleet
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def list_running_boxes():
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boxes = []
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for line in subprocess.check_output(["fleetctl", "list-machines"]).split('\n'):
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matcher = re.search("[^\s]+[\s]+([^\s]+).+", line)
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if matcher and matcher.group(1) != "IP":
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boxes.append(matcher.group(1))
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return boxes
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def get_a_ssh_config(box_name):
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config = {}
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config['Host'] = box_name
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config['ansible_ssh_user'] = 'core'
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config['ansible_python_interpreter'] = '/opt/bin/python'
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return config
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# List out servers that vagrant has running
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# ------------------------------
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if options.list:
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ssh_config = get_ssh_config()
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hosts = {'coreos': []}
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for data in ssh_config:
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hosts['coreos'].append(data['Host'])
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print(json.dumps(hosts))
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sys.exit(1)
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# Get out the host details
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# ------------------------------
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elif options.host:
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result = {}
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ssh_config = get_ssh_config()
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details = filter(lambda x: (x['Host'] == options.host), ssh_config)
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if len(details) > 0:
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# pass through the port, in case it's non standard.
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result = details[0]
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print(json.dumps(result))
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sys.exit(1)
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# Print out help
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# ------------------------------
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else:
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parser.print_help()
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sys.exit(1)
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