Merge plugins tree

plugins/CONTRIBUTING.md

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+Contributing to Ansible
+=======================
+
+It is required that you read the following information to learn how to contribute to this project.
+
+Branch Info
+===========
+
+Here's how to understand the branches.
+
+   * The devel branch corresponds to the latest ongoing release
+   * Various release-X.Y branches exist for previous releases
+   * All feature work happens on the development branch.
+   * Major bug fixes will be made to the last release branch only
+   * See CHANGELOG.md for release notes to track each release.
+
+Patch Instructions
+==================
+
+Contributions to the core and modules are greatly welcome.
+
+   * Required Process:
+       * Submit github pull requests to the "ansible/devel" branch for features
+       * Fixes for bugs may also be submitted to "ansible/release-X.Y" for the last release
+       * Make sure "make tests" passes before submitting any requests.
+   * Bonus points:
+       * Joining the mailing list
+       * Fixing bugs instead of sending bug reports.
+       * Using squash merges
+       * Updating the "rst/*" files in the docs project and "docs/" manpage content
+       * Adding more unit tests
+   * Avoid:
+       * Sending patches to the mailing list directly.
+       * Sending feature pull requests to the 'release' branch instead of the devel branch
+       * Sending pull requests to mpdehaan's personal ansible fork.
+       * Sending pull requests about more than one feature in the same pull request.
+       * Whitespace restructuring
+       * Large scale refactoring without a discussion on the list
+
+Coding Standards
+================
+
+We're not too strict on style considerations, but we require:
+
+   * python 2.6 compliant code, unless in ansible modules, then python *2.4* compliant code (no 'with', etc)
+   * 4-space indents, no tabs except in Makefiles
+   * under_scores for method names and variables, not camelCase
+   * GPLv3 license headers on all files, with copyright on new files with your name on it
+   * no single-line if statements, deeply nested list comprehensions, or clever use of metaclasses -- keep it simple
+   * comments where appropriate
+
+Contributors License Agreement
+==============================
+
+By contributing you agree that these contributions are your own (or approved by your employer) and you grant a full, complete, irrevocable
+copyright license to all users and developers of the project, present and future, persusant to the license of the project.
+
+
+

plugins/README.md

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+ansible-plugins
+===============
+
+Extend ansible with optional callback and connection plugins.
+
+callbacks
+=========
+
+Callbacks can be used to add logging or monitoring capability, or just make
+interesting sound effects.
+
+Drop callback plugins in your ansible/lib/callback_plugins/ directory.
+
+connections
+===========
+
+Connection plugins allow ansible to talk over different protocols.
+
+Drop connection plugins in your ansible/lib/runner/connection_plugins/ directory.
+
+inventory
+=========
+
+Inventory plugins allow you to store your hosts, groups, and variables in any way
+you like.  Examples include discovering inventory from EC2 or pulling it from
+Cobbler.  These could also be used to interface with LDAP or database.
+
+chmod +x an inventory plugin and either name it /etc/ansible/hosts or use ansible
+with -i to designate the path to the plugin.
+
+contributions welcome
+=====================
+
+Send in pull requests to add plugins of your own.  The sky is the limit!
+

plugins/callbacks/log_plays.py

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+# (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 os
+import time
+import json
+
+TIME_FORMAT="%b %d %Y %H:%M:%S"
+MSG_FORMAT="%(now)s - %(category)s - %(data)s\n\n"
+
+if not os.path.exists("/var/log/ansible/hosts"):
+    os.makedirs("/var/log/ansible/hosts")
+
+def log(host, category, data):
+    if type(data) == dict:
+        if 'verbose_override' in data:
+            # avoid logging extraneous data from facts
+            data = 'omitted'
+        else:
+            invocation = data.pop('invocation', None)
+            data = json.dumps(data)
+            if invocation is not None:
+                data = json.dumps(invocation) + " => %s " % data
+
+    path = os.path.join("/var/log/ansible/hosts", host)
+    now = time.strftime(TIME_FORMAT, time.localtime())
+    fd = open(path, "a")
+    fd.write(MSG_FORMAT % dict(now=now, category=category, data=data))
+    fd.close()
+
+class CallbackModule(object):
+    """
+    logs playbook results, per host, in /var/log/ansible/hosts
+    """
+
+    def on_any(self, *args, **kwargs):
+        pass
+
+    def runner_on_failed(self, host, res, ignore_errors=False):
+        log(host, 'FAILED', res)
+
+    def runner_on_ok(self, host, res):
+        log(host, 'OK', res)
+
+    def runner_on_error(self, host, msg):
+        log(host, 'ERROR', msg)
+
+    def runner_on_skipped(self, host, item=None):
+        log(host, 'SKIPPED', '...')
+
+    def runner_on_unreachable(self, host, res):
+        log(host, 'UNREACHABLE', res)
+
+    def runner_on_no_hosts(self):
+        pass
+
+    def runner_on_async_poll(self, host, res, jid, clock):
+        pass
+
+    def runner_on_async_ok(self, host, res, jid):
+        pass
+
+    def runner_on_async_failed(self, host, res, jid):
+        log(host, 'ASYNC_FAILED', res)
+
+    def playbook_on_start(self):
+        pass
+
+    def playbook_on_notify(self, host, handler):
+        pass
+
+    def playbook_on_task_start(self, name, is_conditional):
+        pass
+
+    def playbook_on_vars_prompt(self, varname, private=True, prompt=None, encrypt=None, confirm=False, salt_size=None, salt=None):
+        pass
+
+    def playbook_on_setup(self):
+        pass
+
+    def playbook_on_import_for_host(self, host, imported_file):
+        log(host, 'IMPORTED', imported_file)
+
+    def playbook_on_not_import_for_host(self, host, missing_file):
+        log(host, 'NOTIMPORTED', missing_file)
+
+    def playbook_on_play_start(self, pattern):
+        pass
+
+    def playbook_on_stats(self, stats):
+        pass
+

plugins/callbacks/osx_say.py

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+
+# (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 subprocess
+
+FAILED_VOICE="Zarvox"
+REGULAR_VOICE="Trinoids"
+HAPPY_VOICE="Cellos"
+LASER_VOICE="Princess"
+
+def say(msg, voice):
+    subprocess.call(["/usr/bin/say", msg, "--voice=%s" % (voice)])
+
+class CallbackModule(object):
+    """
+    makes Ansible much more exciting on OS X.
+    """
+
+    def on_any(self, *args, **kwargs):
+        pass
+
+    def runner_on_failed(self, host, res, ignore_errors=False):
+        say("Failure on host %s" % host, FAILED_VOICE)
+
+    def runner_on_ok(self, host, res):
+        say("pew", LASER_VOICE)
+
+    def runner_on_error(self, host, msg):
+        pass
+
+    def runner_on_skipped(self, host, item=None):
+        say("pew", LASER_VOICE)
+
+    def runner_on_unreachable(self, host, res):
+        say("Failure on host %s" % host, FAILED_VOICE)
+
+    def runner_on_no_hosts(self):
+        pass
+
+    def runner_on_async_poll(self, host, res, jid, clock):
+        pass
+
+    def runner_on_async_ok(self, host, res, jid):
+        say("pew", LASER_VOICE)
+
+    def runner_on_async_failed(self, host, res, jid):
+        say("Failure on host %s" % host, FAILED_VOICE)
+
+    def playbook_on_start(self):
+        say("Running Playbook", REGULAR_VOICE)
+
+    def playbook_on_notify(self, host, handler):
+        say("pew", LASER_VOICE)
+
+    def playbook_on_task_start(self, name, is_conditional):
+        if not is_conditional:
+            say("Starting task: %s" % name, REGULAR_VOICE)
+        else:
+            say("Notifying task: %s" % name, REGULAR_VOICE)
+
+    def playbook_on_vars_prompt(self, varname, private=True, prompt=None, encrypt=None, confirm=False, salt_size=None, salt=None):
+        pass
+
+    def playbook_on_setup(self):
+        say("Gathering facts", REGULAR_VOICE)
+
+    def playbook_on_import_for_host(self, host, imported_file):
+        pass
+
+    def playbook_on_not_import_for_host(self, host, missing_file):
+        pass
+
+    def playbook_on_play_start(self, pattern):
+        say("Starting play: %s" % pattern, HAPPY_VOICE)
+
+    def playbook_on_stats(self, stats):
+        say("Play complete", HAPPY_VOICE)
+

plugins/connections/README.md

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+Connections are also pluggable, see lib/ansible/runner/connections.py for the ones that ship with ansible.
+
+When non-core alternatives are avialable, they can be shared here.
+

plugins/inventory/cobbler.py

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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.
+
+NOTE: The cobbler system names will not be used.  Make sure a
+cobbler --dns-name is set for each cobbler system.   If a system
+appears with two DNS names we do not add it twice because we don't want
+ansible talking to it twice.  The first one found will be used. If no
+--dns-name is set the system will NOT be visible to ansible.  We do
+not add cobbler system names because there is no requirement in cobbler
+that those correspond to addresses.
+
+See http://ansible.github.com/api.html for more info
+
+Tested with Cobbler 2.0.11.
+"""
+
+# (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
+
+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("http://127.0.0.1/cobbler_api", allow_none=True)
+
+###################################################
+# executed with no parameters, return the list of
+# all groups and hosts
+
+if len(sys.argv) == 2 and (sys.argv[1] == '--list'):
+
+    systems = conn.get_item_names('system')
+    groups = { 'ungrouped' : [] }
+
+    for system in systems:
+
+        data = conn.get_blended_data(None, system)
+
+        dns_name = None
+        interfaces = data['interfaces']
+        for (iname, ivalue) in interfaces.iteritems():
+            this_dns_name = ivalue.get('dns_name', None)
+            if this_dns_name is not None:
+                dns_name = this_dns_name
+
+        if dns_name is None:
+            continue
+
+        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
+            groups[cls].append(dns_name)
+
+    print json.dumps(groups)
+    sys.exit(0)
+
+#####################################################
+# executed with a hostname as a parameter, return the
+# variables for that host
+
+elif len(sys.argv) == 3 and (sys.argv[1] == '--host'):
+
+    # look up the system record for the given DNS name
+    result = conn.find_system_by_dns_name(sys.argv[2])
+    system = result.get('name', None)
+    data = {}
+    if system is None:
+        print json.dumps({})
+        sys.exit(1)
+    data = conn.get_system_for_koan(system)
+
+    # 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)
+
+else:
+
+    print "usage: --list  ..OR.. --host <hostname>"
+    sys.exit(1)

plugins/inventory/ec2.ini

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+# Ansible EC2 external inventory script settings
+#
+
+[ec2]
+
+# to talk to a private eucalyptus instance uncomment these lines
+# and edit edit eucalyptus_host to be the host name of your cloud controller
+#eucalyptus = True
+#eucalyptus_host = clc.cloud.domain.org
+
+# AWS regions to make calls to. Set this to 'all' to make request to all regions
+# in AWS and merge the results together. Alternatively, set this to a comma
+# separated list of regions. E.g. 'us-east-1,us-west-1,us-west-2'
+regions = all
+
+# When generating inventory, Ansible needs to know how to address a server.
+# Each EC2 instance has a lot of variables associated with it. Here is the list:
+#   http://docs.pythonboto.org/en/latest/ref/ec2.html#module-boto.ec2.instance
+# Below are 2 variables that are used as the address of a server:
+#   - destination_variable
+#   - vpc_destination_variable
+
+# This is the normal destination variable to use. If you are running Ansible
+# from outside EC2, then 'public_dns_name' makes the most sense. If you are
+# running Ansible from within EC2, then perhaps you want to use the internal
+# address, and should set this to 'private_dns_name'.
+destination_variable = public_dns_name
+
+# For server inside a VPC, using DNS names may not make sense. When an instance
+# has 'subnet_id' set, this variable is used. If the subnet is public, setting
+# this to 'ip_address' will return the public IP address. For instances in a
+# private subnet, this should be set to 'private_ip_address', and Ansible must
+# be run from with EC2.
+vpc_destination_variable = ip_address
+
+# API calls to EC2 are slow. For this reason, we cache the results of an API
+# call. Set this to the path you want cache files to be written to. Two files
+# will be written to this directory:
+#   - ansible-ec2.cache
+#   - ansible-ec2.index
+cache_path = /tmp
+
+# The number of seconds a cache file is considered valid. After this many
+# seconds, a new API call will be made, and the cache file will be updated.
+cache_max_age = 300
+
+
+

plugins/inventory/ec2.py

@@ -0,0 +1,405 @@
+#!/usr/bin/python -tt
+
+'''
+EC2 external inventory script
+=================================
+
+Generates inventory that Ansible can understand by making API request to
+AWS EC2 using the Boto library.
+
+NOTE: This script assumes Ansible is being executed where the environment
+variables needed for Boto have already been set:
+    export AWS_ACCESS_KEY_ID='AK123'
+    export AWS_SECRET_ACCESS_KEY='abc123'
+
+If you're using eucalyptus you need to set the above variables and
+you need to define:
+
+    export EC2_URL=http://hostname_of_your_cc:port/services/Eucalyptus
+
+For more details, see: http://docs.pythonboto.org/en/latest/boto_config_tut.html
+
+When run against a specific host, this script returns the following variables:
+ - ec2_ami_launch_index
+ - ec2_architecture
+ - ec2_association
+ - ec2_attachTime
+ - ec2_attachment
+ - ec2_attachmentId
+ - ec2_client_token
+ - ec2_deleteOnTermination
+ - ec2_description
+ - ec2_deviceIndex
+ - ec2_dns_name
+ - ec2_eventsSet
+ - ec2_group_name
+ - ec2_hypervisor
+ - ec2_id
+ - ec2_image_id
+ - ec2_instanceState
+ - ec2_instance_type
+ - ec2_ipOwnerId
+ - ec2_ip_address
+ - ec2_item
+ - ec2_kernel
+ - ec2_key_name
+ - ec2_launch_time
+ - ec2_monitored
+ - ec2_monitoring
+ - ec2_networkInterfaceId
+ - ec2_ownerId
+ - ec2_persistent
+ - ec2_placement
+ - ec2_platform
+ - ec2_previous_state
+ - ec2_private_dns_name
+ - ec2_private_ip_address
+ - ec2_publicIp
+ - ec2_public_dns_name
+ - ec2_ramdisk
+ - ec2_reason
+ - ec2_region
+ - ec2_requester_id
+ - ec2_root_device_name
+ - ec2_root_device_type
+ - ec2_security_group_ids
+ - ec2_security_group_names
+ - ec2_shutdown_state
+ - ec2_sourceDestCheck
+ - ec2_spot_instance_request_id
+ - ec2_state
+ - ec2_state_code
+ - ec2_state_reason
+ - ec2_status
+ - ec2_subnet_id
+ - ec2_tenancy
+ - ec2_virtualization_type
+ - ec2_vpc_id
+
+These variables are pulled out of a boto.ec2.instance object. There is a lack of
+consistency with variable spellings (camelCase and underscores) since this
+just loops through all variables the object exposes. It is preferred to use the
+ones with underscores when multiple exist.
+
+In addition, if an instance has AWS Tags associated with it, each tag is a new
+variable named:
+ - ec2_tag_[Key] = [Value]
+
+Security groups are comma-separated in 'ec2_security_group_ids' and
+'ec2_security_group_names'.
+'''
+
+# (c) 2012, Peter Sankauskas
+#
+# 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 os
+import argparse
+import re
+from time import time
+import boto
+from boto import ec2
+import ConfigParser
+
+try:
+    import json
+except ImportError:
+    import simplejson as json
+
+
+class Ec2Inventory(object):
+    def __init__(self):
+        ''' Main execution path '''
+
+        # Inventory grouped by instance IDs, tags, security groups, regions,
+        # and availability zones
+        self.inventory = {}
+
+        # Index of hostname (address) to instance ID
+        self.index = {}
+        
+        # Read settings and parse CLI arguments
+        self.read_settings()
+        self.parse_cli_args()
+
+        # Cache
+        if self.args.refresh_cache:
+            self.do_api_calls_update_cache()
+        elif not self.is_cache_valid():
+            self.do_api_calls_update_cache()
+
+        # Data to print
+        if self.args.host:
+            data_to_print = self.get_host_info()
+
+        elif self.args.list:
+            # Display list of instances for inventory
+            if len(self.inventory) == 0:
+                data_to_print = self.get_inventory_from_cache()
+            else:
+                data_to_print = self.json_format_dict(self.inventory, True)
+
+        print data_to_print
+
+
+    def is_cache_valid(self):
+        ''' Determines if the cache files have expired, or if it is still valid '''
+
+        if os.path.isfile(self.cache_path_cache):
+            mod_time = os.path.getmtime(self.cache_path_cache)
+            current_time = time()
+            if (mod_time + self.cache_max_age) > current_time:
+                if os.path.isfile(self.cache_path_index):
+                    return True
+
+        return False
+
+
+    def read_settings(self):
+        ''' Reads the settings from the ec2.ini file '''
+
+        config = ConfigParser.SafeConfigParser()
+        config.read(os.path.dirname(os.path.realpath(__file__)) + '/ec2.ini')
+
+        # is eucalyptus?
+        self.eucalyptus_host = None
+        self.eucalyptus = False
+        if config.has_option('ec2', 'eucalyptus'):
+           self.eucalyptus = config.getboolean('ec2', 'eucalyptus')
+        if self.eucalyptus and config.has_option('ec2', 'eucalyptus_host'):
+           self.eucalyptus_host = config.get('ec2', 'eucalyptus_host')
+
+        # Regions
+        self.regions = []
+        configRegions = config.get('ec2', 'regions')
+        if (configRegions == 'all'):
+            if self.eucalyptus_host:
+                self.regions.append(boto.connect_euca(host=self.eucalyptus_host).region.name)
+            else:
+                for regionInfo in ec2.regions():
+                    self.regions.append(regionInfo.name)
+        else:
+            self.regions = configRegions.split(",")
+
+        # Destination addresses
+        self.destination_variable = config.get('ec2', 'destination_variable')
+        self.vpc_destination_variable = config.get('ec2', 'vpc_destination_variable')
+
+        # Cache related
+        cache_path = config.get('ec2', 'cache_path')
+        self.cache_path_cache = cache_path + "/ansible-ec2.cache"
+        self.cache_path_index = cache_path + "/ansible-ec2.index"
+        self.cache_max_age = config.getint('ec2', 'cache_max_age')
+        
+
+
+    def parse_cli_args(self):
+        ''' Command line argument processing '''
+
+        parser = argparse.ArgumentParser(description='Produce an Ansible Inventory file based on EC2')
+        parser.add_argument('--list', action='store_true', default=True,
+                           help='List instances (default: True)')
+        parser.add_argument('--host', action='store',
+                           help='Get all the variables about a specific instance')
+        parser.add_argument('--refresh-cache', action='store_true', default=False,
+                           help='Force refresh of cache by making API requests to EC2 (default: False - use cache files)')
+        self.args = parser.parse_args()
+
+
+    def do_api_calls_update_cache(self):
+        ''' Do API calls to each region, and save data in cache files '''
+
+        for region in self.regions:
+            self.get_instances_by_region(region)
+
+        self.write_to_cache(self.inventory, self.cache_path_cache)
+        self.write_to_cache(self.index, self.cache_path_index)
+
+
+    def get_instances_by_region(self, region):
+        ''' Makes an AWS EC2 API call to the list of instances in a particular
+        region '''
+
+        if self.eucalyptus:
+            conn = boto.connect_euca(host=self.eucalyptus_host)
+            conn.APIVersion = '2010-08-31'
+        else:
+            conn = ec2.connect_to_region(region)
+
+        reservations = conn.get_all_instances()
+        for reservation in reservations:
+            for instance in reservation.instances:
+                self.add_instance(instance, region)
+
+
+    def get_instance(self, region, instance_id):
+        ''' Gets details about a specific instance '''
+        if self.eucalyptus:
+            conn = boto.connect_euca(self.eucalyptus_host)
+            conn.APIVersion = '2010-08-31'
+        else:
+            conn = ec2.connect_to_region(region)
+
+        reservations = conn.get_all_instances([instance_id])
+        for reservation in reservations:
+            for instance in reservation.instances:
+                return instance
+
+
+    def add_instance(self, instance, region):
+        ''' Adds an instance to the inventory and index, as long as it is
+        addressable '''
+
+        # Only want running instances
+        if instance.state == 'terminated':
+            return
+
+        # Select the best destination address
+        if instance.subnet_id:
+            dest = getattr(instance, self.vpc_destination_variable)
+        else:
+            dest =  getattr(instance, self.destination_variable)
+
+        if dest == None:
+            # Skip instances we cannot address (e.g. private VPC subnet)
+            return
+
+        # Add to index
+        self.index[dest] = [region, instance.id]
+
+        # Inventory: Group by instance ID (always a group of 1)
+        self.inventory[instance.id] = [dest]
+
+        # Inventory: Group by region
+        self.push(self.inventory, region, dest)
+
+        # Inventory: Group by availability zone
+        self.push(self.inventory, instance.placement, dest)
+
+        # Inventory: Group by security group
+        for group in instance.groups:
+            key = self.to_safe("security_group_" + group.name)
+            self.push(self.inventory, key, dest)
+
+        # Inventory: Group by tag keys
+        for k, v in instance.tags.iteritems():
+            key = self.to_safe("tag_" + k + "=" + v)
+            self.push(self.inventory, key, dest)
+
+
+    def get_host_info(self):
+        ''' Get variables about a specific host '''
+
+        if len(self.index) == 0:
+            # Need to load index from cache
+            self.load_index_from_cache()
+
+        (region, instance_id) = self.index[self.args.host]
+        instance = self.get_instance(region, instance_id)
+        instance_vars = {}
+        for key in vars(instance):
+            value = getattr(instance, key)
+            key = self.to_safe('ec2_' + key)
+
+            # Handle complex types
+            if type(value) in [int, bool]:
+                instance_vars[key] = value
+            elif type(value) in [str, unicode]:
+                instance_vars[key] = value.strip()
+            elif type(value) == type(None):
+                instance_vars[key] = ''
+            elif key == 'ec2_region':
+                instance_vars[key] = value.name
+            elif key == 'ec2_tags':
+                for k, v in value.iteritems():
+                    key = self.to_safe('ec2_tag_' + k)
+                    instance_vars[key] = v
+            elif key == 'ec2_groups':
+                group_ids = []
+                group_names = []
+                for group in value:
+                    group_ids.append(group.id)
+                    group_names.append(group.name)
+                instance_vars["ec2_security_group_ids"] = ','.join(group_ids)
+                instance_vars["ec2_security_group_names"] = ','.join(group_names)
+            else:
+                pass
+                # TODO Product codes if someone finds them useful
+                #print key
+                #print type(value)
+                #print value
+
+        return self.json_format_dict(instance_vars, True)
+
+
+    def push(self, my_dict, key, element):
+        ''' Pushed an element onto an array that may not have been defined in
+        the dict '''
+
+        if key in my_dict:
+            my_dict[key].append(element);
+        else:
+            my_dict[key] = [element]
+
+
+    def get_inventory_from_cache(self):
+        ''' Reads the inventory from the cache file and returns it as a JSON
+        object '''
+
+        cache = open(self.cache_path_cache, 'r')
+        json_inventory = cache.read()
+        return json_inventory
+
+
+    def load_index_from_cache(self):
+        ''' Reads the index from the cache file sets self.index '''
+
+        cache = open(self.cache_path_index, 'r')
+        json_index = cache.read()
+        self.index = json.loads(json_index)
+
+
+    def write_to_cache(self, data, filename):
+        ''' Writes data in JSON format to a file '''
+
+        json_data = self.json_format_dict(data, True)
+        cache = open(filename, 'w')
+        cache.write(json_data)
+        cache.close()
+
+
+    def to_safe(self, word):
+        ''' Converts 'bad' characters in a string to underscores so they can be
+        used as Ansible groups '''
+
+        return re.sub("[^A-Za-z0-9\-]", "_", word)
+
+
+    def json_format_dict(self, data, pretty=False):
+        ''' Converts a dict to a JSON object and dumps it as a formatted
+        string '''
+
+        if pretty:
+            return json.dumps(data, sort_keys=True, indent=2)
+        else:
+            return json.dumps(data)
+
+
+# Run the script
+Ec2Inventory()
+

plugins/inventory/nova.ini

@@ -0,0 +1,26 @@
+# Ansible OpenStack external inventory script
+
+[openstack]
+# API version
+version       = 2
+
+# OpenStack nova username
+username      =
+
+# OpenStack nova api_key
+api_key       =
+
+# OpenStack nova auth_url
+# For use with the new RackSpace API use https://identity.api.rackspacecloud.com/v2.0/
+auth_url      =
+
+# OpenStack nova project_id
+project_id    = None
+
+# TODO: Some other options
+# insecure      =
+# region_name   =
+# endpoint_type =
+# extensions    = 
+# service_type  =
+# service_name  =

plugins/inventory/nova.py

@@ -0,0 +1,149 @@
+#!/usr/bin/python
+
+"""
+OpenStack external inventory script
+=================================
+
+Generates inventory that Ansible can understand by making API request to
+OpenStack endpoint using the novaclient library.
+
+NOTE: This script assumes Ansible is being executed where the environment
+variables needed for novaclient have already been set on nova.ini file
+
+For more details, see: https://github.com/openstack/python-novaclient
+
+When run against a specific host, this script returns the following variables:
+    os_os-ext-sts_task_state
+    os_addresses
+    os_links
+    os_image
+    os_os-ext-sts_vm_state
+    os_flavor
+    os_id
+    os_rax-bandwidth_bandwidth
+    os_user_id
+    os_os-dcf_diskconfig
+    os_accessipv4
+    os_accessipv6
+    os_progress
+    os_os-ext-sts_power_state
+    os_metadata
+    os_status
+    os_updated
+    os_hostid
+    os_name
+    os_created
+    os_tenant_id
+    os__info
+    os__loaded
+
+where some item can have nested structure.
+
+"""
+
+# (c) 2012, Marco Vito Moscaritolo <marco@agavee.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 re
+import os
+import ConfigParser
+from novaclient import client as nova_client
+
+try:
+    import json
+except:
+    import simplejson as json
+
+###################################################
+# executed with no parameters, return the list of
+# all groups and hosts
+
+def nova_load_config_file():
+    p = ConfigParser.SafeConfigParser()
+    path1 = os.getcwd() + "/nova.ini"
+    path2 = os.path.expanduser(os.environ.get('ANSIBLE_CONFIG', "~/nova.ini"))
+    path3 = "/etc/ansible/nova.ini"
+
+    if os.path.exists(path1):
+        p.read(path1)
+    elif os.path.exists(path2):
+        p.read(path2)
+    elif os.path.exists(path3):
+        p.read(path3)
+    else:
+        return None
+    return p
+
+config = nova_load_config_file()
+
+client = nova_client.Client(
+    version     = config.get('openstack', 'version'),
+    username    = config.get('openstack', 'username'),
+    api_key     = config.get('openstack', 'api_key'),
+    auth_url    = config.get('openstack', 'auth_url'),
+    project_id  = config.get('openstack', 'project_id')
+)
+
+if len(sys.argv) == 2 and (sys.argv[1] == '--list'):
+    groups = {}
+
+    # Cycle on servers
+    for f in client.servers.list():
+        # Define group (or set to empty string)
+        group = f.metadata['group'] if f.metadata.has_key('group') else 'undefined'
+
+        # Create group if not exist
+        if group not in groups:
+            groups[group] = []
+
+        # Append group to list
+        groups[group].append(f.accessIPv4)
+
+    # Return server list
+    print json.dumps(groups)
+    sys.exit(0)
+
+#####################################################
+# executed with a hostname as a parameter, return the
+# variables for that host
+
+elif len(sys.argv) == 3 and (sys.argv[1] == '--host'):
+    results = {}
+    for instance in client.servers.list():
+        if instance.accessIPv4 == sys.argv[2]:
+            for key in vars(instance):
+                # Extract value
+                value = getattr(instance, key)
+
+                # Generate sanitized key
+                key = 'os_' + re.sub("[^A-Za-z0-9\-]", "_", key).lower()
+
+                # Att value to instance result (exclude manager class)
+                #TODO: maybe use value.__class__ or similar inside of key_name
+                if key != 'os_manager':
+                    results[key] = value
+
+    print json.dumps(results)
+    sys.exit(0)
+
+else:
+    print "usage: --list  ..OR.. --host <hostname>"
+    sys.exit(1)