415 lines
14 KiB
Python
Executable file
415 lines
14 KiB
Python
Executable file
#!/usr/bin/python
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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible 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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# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
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DEFAULT_ANSIBLE_SETUP = "/etc/ansible/setup"
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import array
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import fcntl
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import glob
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import sys
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import os
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import platform
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import re
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import shlex
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import socket
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import struct
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import subprocess
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import traceback
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import syslog
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try:
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import selinux
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HAVE_SELINUX=True
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except ImportError:
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HAVE_SELINUX=False
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try:
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import json
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except ImportError:
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import simplejson as json
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_I386RE = re.compile(r'i[3456]86')
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SIOCGIFCONF = 0x8912
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SIOCGIFHWADDR = 0x8927
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MEMORY_FACTS = ['MemTotal', 'SwapTotal', 'MemFree', 'SwapFree']
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# DMI bits
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DMI_DICT = { 'form_factor': '/sys/devices/virtual/dmi/id/chassis_type',
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'product_name': '/sys/devices/virtual/dmi/id/product_name',
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'product_serial': '/sys/devices/virtual/dmi/id/product_serial',
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'product_uuid': '/sys/devices/virtual/dmi/id/product_uuid',
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'product_version': '/sys/devices/virtual/dmi/id/product_version',
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'system_vendor': '/sys/devices/virtual/dmi/id/sys_vendor',
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'bios_date': '/sys/devices/virtual/dmi/id/bios_date',
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'bios_version': '/sys/devices/virtual/dmi/id/bios_version' }
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# From smolt and DMI spec
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FORM_FACTOR = [ "Unknown", "Other", "Unknown", "Desktop",
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"Low Profile Desktop", "Pizza Box", "Mini Tower", "Tower",
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"Portable", "Laptop", "Notebook", "Hand Held", "Docking Station",
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"All In One", "Sub Notebook", "Space-saving", "Lunch Box",
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"Main Server Chassis", "Expansion Chassis", "Sub Chassis",
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"Bus Expansion Chassis", "Peripheral Chassis", "RAID Chassis",
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"Rack Mount Chassis", "Sealed-case PC", "Multi-system",
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"CompactPCI", "AdvancedTCA" ]
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# For the most part, we assume that platform.dist() will tell the truth.
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# This is the fallback to handle unknowns or exceptions
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OSDIST_DICT = { '/etc/redhat-release': 'RedHat',
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'/etc/vmware-release': 'VMwareESX' }
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SELINUX_MODE_DICT = { 1: 'enforcing', 0: 'permissive', -1: 'disabled' }
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def get_file_content(path):
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if os.path.exists(path) and os.access(path, os.R_OK):
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data = open(path).read().strip()
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if len(data) == 0:
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data = None
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else:
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data = None
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return data
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# platform.dist() is deprecated in 2.6
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# in 2.6 and newer, you should use platform.linux_distribution()
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def get_distribution_facts(facts):
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dist = platform.dist()
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facts['distribution'] = dist[0].capitalize() or 'NA'
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facts['distribution_version'] = dist[1] or 'NA'
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facts['distribution_release'] = dist[2] or 'NA'
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# Try to handle the exceptions now ...
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for (path, name) in OSDIST_DICT.items():
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if os.path.exists(path):
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if facts['distribution'] == 'Fedora':
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pass
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elif name == 'RedHat':
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data = get_file_content(path)
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if 'Red Hat' in data:
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facts['distribution'] = name
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else:
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facts['distribution'] = data.split()[0]
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else:
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facts['distribution'] = name
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# Platform
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# patform.system() can be Linux, Darwin, Java, or Windows
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def get_platform_facts(facts):
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facts['system'] = platform.system()
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facts['kernel'] = platform.release()
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facts['machine'] = platform.machine()
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facts['python_version'] = platform.python_version()
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if facts['machine'] == 'x86_64':
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facts['architecture'] = facts['machine']
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elif _I386RE.search(facts['machine']):
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facts['architecture'] = 'i386'
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else:
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facts['archtecture'] = facts['machine']
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if facts['system'] == 'Linux':
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get_distribution_facts(facts)
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def get_memory_facts(facts):
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if not os.access("/proc/meminfo", os.R_OK):
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return facts
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for line in open("/proc/meminfo").readlines():
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data = line.split(":", 1)
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key = data[0]
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if key in MEMORY_FACTS:
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val = data[1].strip().split(' ')[0]
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facts["%s_mb" % key.lower()] = long(val) / 1024
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def get_cpu_facts(facts):
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i = 0
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physid = 0
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sockets = {}
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if not os.access("/proc/cpuinfo", os.R_OK):
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return facts
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for line in open("/proc/cpuinfo").readlines():
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data = line.split(":", 1)
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key = data[0].strip()
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if key == 'model name':
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if 'processor' not in facts:
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facts['processor'] = []
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facts['processor'].append(data[1].strip())
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i += 1
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elif key == 'physical id':
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physid = data[1].strip()
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if physid not in sockets:
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sockets[physid] = 1
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elif key == 'cpu cores':
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sockets[physid] = int(data[1].strip())
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if len(sockets) > 0:
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facts['processor_count'] = len(sockets)
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facts['processor_cores'] = reduce(lambda x, y: x + y, sockets.values())
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else:
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facts['processor_count'] = i
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facts['processor_cores'] = 'NA'
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def get_hardware_facts(facts):
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get_memory_facts(facts)
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get_cpu_facts(facts)
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for (key,path) in DMI_DICT.items():
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data = get_file_content(path)
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if data is not None:
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if key == 'form_factor':
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facts['form_factor'] = FORM_FACTOR[int(data)]
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else:
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facts[key] = data
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else:
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facts[key] = 'NA'
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def get_linux_virtual_facts(facts):
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if os.path.exists("/proc/xen"):
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facts['virtualization_type'] = 'xen'
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facts['virtualization_role'] = 'guest'
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if os.path.exists("/proc/xen/capabilities"):
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facts['virtualization_role'] = 'host'
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if os.path.exists("/proc/modules"):
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modules = []
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for line in open("/proc/modules").readlines():
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data = line.split(" ", 1)
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modules.append(data[0])
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if 'kvm' in modules:
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facts['virtualization_type'] = 'kvm'
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facts['virtualization_role'] = 'host'
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elif 'vboxdrv' in modules:
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facts['virtualization_type'] = 'virtualbox'
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facts['virtualization_role'] = 'host'
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elif 'vboxguest' in modules:
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facts['virtualization_type'] = 'virtualbox'
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facts['virtualization_role'] = 'guest'
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if 'QEMU' in facts['processor'][0]:
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facts['virtualization_type'] = 'kvm'
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facts['virtualization_role'] = 'guest'
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if facts['distribution'] == 'VMwareESX':
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facts['virtualization_type'] = 'VMware'
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facts['virtualization_role'] = 'host'
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# You can spawn a dmidecode process and parse that or infer from devices
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for dev_model in glob.glob('/sys/block/?da/device/vendor'):
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info = open(dev_model).read()
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if 'VMware' in info:
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facts['virtualization_type'] = 'VMware'
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facts['virtualization_role'] = 'guest'
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elif 'Virtual HD' in info or 'Virtual CD' in info:
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facts['virtualization_type'] = 'VirtualPC'
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facts['virtualization_role'] = 'guest'
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def get_virtual_facts(facts):
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facts['virtualization_type'] = 'None'
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facts['virtualization_role'] = 'None'
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if facts['system'] == 'Linux':
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facts = get_linux_virtual_facts(facts)
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# get list of interfaces that are up
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def get_interfaces(facts):
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if facts['system'] == 'SunOS':
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return []
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length = 4096
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offset = 32
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step = 32
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if platform.architecture()[0] == '64bit':
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offset = 16
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step = 40
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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names = array.array('B', '\0' * length)
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bytelen = struct.unpack('iL', fcntl.ioctl(
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s.fileno(), SIOCGIFCONF, struct.pack(
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'iL', length, names.buffer_info()[0])
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))[0]
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return [names.tostring()[i:i+offset].split('\0', 1)[0]
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for i in range(0, bytelen, step)]
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def get_iface_hwaddr(iface):
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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info = fcntl.ioctl(s.fileno(), SIOCGIFHWADDR,
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struct.pack('256s', iface[:15]))
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return ''.join(['%02x:' % ord(char) for char in info[18:24]])[:-1]
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def get_network_facts(facts):
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facts['fqdn'] = socket.getfqdn()
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facts['hostname'] = facts['fqdn'].split('.')[0]
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facts['interfaces'] = get_interfaces(facts)
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for iface in facts['interfaces']:
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facts[iface] = { 'macaddress': get_iface_hwaddr(iface) }
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# This is lame, but there doesn't appear to be a good way
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# to get all addresses for both IPv4 and IPv6.
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cmd = subprocess.Popen("/sbin/ifconfig %s" % iface, shell=True,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = cmd.communicate()
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for line in out.split('\n'):
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data = line.split()
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if 'inet addr' in line:
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if 'ipv4' not in facts[iface]:
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facts[iface]['ipv4'] = {}
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facts[iface]['ipv4'] = { 'address': data[1].split(':')[1],
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'netmask': data[-1].split(':')[1] }
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ip = struct.unpack("!L", socket.inet_aton(facts[iface]['ipv4']['address']))[0]
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mask = struct.unpack("!L", socket.inet_aton(facts[iface]['ipv4']['netmask']))[0]
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facts[iface]['ipv4']['network'] = socket.inet_ntoa(struct.pack("!L", ip & mask))
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if 'inet6 addr' in line:
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(ip, prefix) = data[2].split('/')
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scope = data[3].split(':')[1].lower()
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if 'ipv6' not in facts[iface]:
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facts[iface]['ipv6'] = []
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facts[iface]['ipv6'].append( { 'address': ip,
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'prefix': prefix,
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'scope': scope } )
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return facts
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def get_public_ssh_host_keys(facts):
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dsa = get_file_content('/etc/ssh/ssh_host_dsa_key.pub')
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rsa = get_file_content('/etc/ssh/ssh_host_rsa_key.pub')
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if dsa is None:
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dsa = 'NA'
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else:
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facts['ssh_host_key_dsa_public'] = dsa.split()[1]
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if rsa is None:
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rsa = 'NA'
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else:
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facts['ssh_host_key_rsa_public'] = rsa.split()[1]
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def get_selinux_facts(facts):
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if not HAVE_SELINUX:
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facts['selinux'] = False
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return
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facts['selinux'] = {}
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if not selinux.is_selinux_enabled():
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facts['selinux']['status'] = 'disabled'
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else:
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facts['selinux']['status'] = 'enabled'
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facts['selinux']['policyvers'] = selinux.security_policyvers()
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(rc, configmode) = selinux.selinux_getenforcemode()
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if rc == 0 and SELINUX_MODE_DICT.has_key(configmode):
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facts['selinux']['config_mode'] = SELINUX_MODE_DICT[configmode]
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mode = selinux.security_getenforce()
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if SELINUX_MODE_DICT.has_key(mode):
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facts['selinux']['mode'] = SELINUX_MODE_DICT[mode]
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(rc, policytype) = selinux.selinux_getpolicytype()
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if rc == 0:
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facts['selinux']['type'] = policytype
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def get_service_facts(facts):
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get_public_ssh_host_keys(facts)
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get_selinux_facts(facts)
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def ansible_facts():
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facts = {}
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get_platform_facts(facts)
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get_hardware_facts(facts)
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get_virtual_facts(facts)
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get_network_facts(facts)
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get_service_facts(facts)
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return facts
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def md5_sum(f):
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md5sum = os.popen("/usr/bin/md5sum %(file)s 2> /dev/null || /sbin/md5 -q %(file)s 2> /dev/null || /usr/bin/digest -a md5 -v %(file)s" % {"file": f}).read().split()[0]
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return md5sum
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# load config & template variables
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if len(sys.argv) == 1:
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sys.exit(1)
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argfile = sys.argv[1]
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if not os.path.exists(argfile):
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sys.exit(1)
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setup_options = open(argfile).read().strip()
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try:
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setup_options = json.loads(setup_options)
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except:
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list_options = shlex.split(setup_options)
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setup_options = {}
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for opt in list_options:
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(k,v) = opt.split("=")
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setup_options[k]=v
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syslog.openlog('ansible-%s' % os.path.basename(__file__))
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syslog.syslog(syslog.LOG_NOTICE, 'Invoked with %s' % setup_options)
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ansible_file = os.path.expandvars(setup_options.get('metadata', DEFAULT_ANSIBLE_SETUP))
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ansible_dir = os.path.dirname(ansible_file)
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# create the config dir if it doesn't exist
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if not os.path.exists(ansible_dir):
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os.makedirs(ansible_dir)
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changed = False
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md5sum = None
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if not os.path.exists(ansible_file):
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changed = True
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else:
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md5sum = md5_sum(ansible_file)
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# Get some basic facts in case facter or ohai are not installed
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for (k, v) in ansible_facts().items():
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setup_options["ansible_%s" % k] = v
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# if facter is installed, and we can use --json because
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# ruby-json is ALSO installed, include facter data in the JSON
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if os.path.exists("/usr/bin/facter"):
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cmd = subprocess.Popen("/usr/bin/facter --json", shell=True,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = cmd.communicate()
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facter = True
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try:
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facter_ds = json.loads(out)
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except:
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facter = False
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if facter:
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for (k,v) in facter_ds.items():
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setup_options["facter_%s" % k] = v
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# ditto for ohai, but just top level string keys
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# because it contains a lot of nested stuff we can't use for
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# templating w/o making a nicer key for it (TODO)
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if os.path.exists("/usr/bin/ohai"):
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cmd = subprocess.Popen("/usr/bin/ohai", shell=True,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = cmd.communicate()
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ohai = True
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try:
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ohai_ds = json.loads(out)
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except:
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ohai = False
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if ohai:
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for (k,v) in ohai_ds.items():
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if type(v) == str or type(v) == unicode:
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k2 = "ohai_%s" % k
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setup_options[k2] = v
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# write the template/settings file using
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# instructions from server
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f = open(ansible_file, "w+")
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reformat = json.dumps(setup_options, sort_keys=True, indent=4)
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f.write(reformat)
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f.close()
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md5sum2 = md5_sum(ansible_file)
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if md5sum != md5sum2:
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changed = True
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setup_result = {}
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setup_result['written'] = ansible_file
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setup_result['changed'] = changed
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setup_result['md5sum'] = md5sum2
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setup_result['ansible_facts'] = setup_options
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print json.dumps(setup_result)
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