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ansible/system/setup

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (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/>.
DOCUMENTATION = '''
---
module: setup
version_added: historical
short_description: Gathers facts about remote hosts
options:
filter:
version_added: "1.1"
description:
- if supplied, only return facts that match this shell-style (fnmatch) wildcard.
required: false
default: '*'
fact_path:
version_added: "1.3"
description:
- path used for local ansible facts (*.fact) - files in this dir
will be run (if executable) and their results be added to ansible_local facts
if a file is not executable it is read.
File/results format can be json or ini-format
required: false
default: '/etc/ansible/facts.d'
description:
- This module is automatically called by playbooks to gather useful
variables about remote hosts that can be used in playbooks. It can also be
executed directly by C(/usr/bin/ansible) to check what variables are
available to a host. Ansible provides many I(facts) about the system,
automatically.
notes:
- More ansible facts will be added with successive releases. If I(facter) or
I(ohai) are installed, variables from these programs will also be snapshotted
into the JSON file for usage in templating. These variables are prefixed
with C(facter_) and C(ohai_) so it's easy to tell their source. All variables are
bubbled up to the caller. Using the ansible facts and choosing to not
install I(facter) and I(ohai) means you can avoid Ruby-dependencies on your
remote systems. (See also M(facter) and M(ohai).)
- The filter option filters only the first level subkey below ansible_facts.
- If the target host is Windows, you will not currently have the ability to use
C(fact_path) or C(filter).
author: Michael DeHaan
'''
EXAMPLES = """
# Display facts from all hosts and store them indexed by I(hostname) at C(/tmp/facts).
ansible all -m setup --tree /tmp/facts
# Display only facts regarding memory found by ansible on all hosts and output them.
ansible all -m setup -a 'filter=ansible_*_mb'
# Display only facts returned by facter.
ansible all -m setup -a 'filter=facter_*'
# Display only facts about certain interfaces.
ansible all -m setup -a 'filter=ansible_eth[0-2]'
"""
def run_setup(module):
11 years ago
setup_options = dict(module_setup=True)
facts = ansible_facts(module)
for (k, v) in facts.items():
setup_options["ansible_%s" % k.replace('-', '_')] = v
# Look for the path to the facter and ohai binary and set
# the variable to that path.
facter_path = module.get_bin_path('facter')
ohai_path = module.get_bin_path('ohai')
# if facter is installed, and we can use --json because
# ruby-json is ALSO installed, include facter data in the JSON
if facter_path is not None:
rc, out, err = module.run_command(facter_path + " --json")
facter = True
try:
facter_ds = json.loads(out)
except:
facter = False
if facter:
for (k,v) in facter_ds.items():
setup_options["facter_%s" % k] = v
# ditto for ohai
if ohai_path is not None:
rc, out, err = module.run_command(ohai_path)
12 years ago
ohai = True
try:
ohai_ds = json.loads(out)
except:
ohai = False
if ohai:
for (k,v) in ohai_ds.items():
k2 = "ohai_%s" % k.replace('-', '_')
setup_options[k2] = v
setup_result = { 'ansible_facts': {} }
for (k,v) in setup_options.items():
if module.params['filter'] == '*' or fnmatch.fnmatch(k, module.params['filter']):
setup_result['ansible_facts'][k] = v
# hack to keep --verbose from showing all the setup module results
setup_result['verbose_override'] = True
return setup_result
def main():
global module
module = AnsibleModule(
argument_spec = dict(
filter=dict(default="*", required=False),
fact_path=dict(default='/etc/ansible/facts.d', required=False),
),
supports_check_mode = True,
)
data = run_setup(module)
module.exit_json(**data)
# import module snippets
from ansible.module_utils.basic import *
from ansible.module_utils.facts import *
main()