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910 lines
36 KiB
Python
910 lines
36 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright: (c) 2016, Shinichi TAMURA (@tmshn)
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = r'''
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---
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module: timezone
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short_description: Configure timezone setting
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description:
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- This module configures the timezone setting, both of the system clock and of the hardware clock. If you want to set up the NTP, use M(service) module.
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- It is recommended to restart C(crond) after changing the timezone, otherwise the jobs may run at the wrong time.
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- Several different tools are used depending on the OS/Distribution involved.
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For Linux it can use C(timedatectl) or edit C(/etc/sysconfig/clock) or C(/etc/timezone) and C(hwclock).
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On SmartOS, C(sm-set-timezone), for macOS, C(systemsetup), for BSD, C(/etc/localtime) is modified.
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On AIX, C(chtz) is used.
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- As of Ansible 2.3 support was added for SmartOS and BSDs.
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- As of Ansible 2.4 support was added for macOS.
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- As of Ansible 2.9 support was added for AIX 6.1+
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- Windows and HPUX are not supported, please let us know if you find any other OS/distro in which this fails.
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version_added: "2.2"
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options:
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name:
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description:
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- Name of the timezone for the system clock.
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- Default is to keep current setting.
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- B(At least one of name and hwclock are required.)
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type: str
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hwclock:
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description:
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- Whether the hardware clock is in UTC or in local timezone.
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- Default is to keep current setting.
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- Note that this option is recommended not to change and may fail
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to configure, especially on virtual environments such as AWS.
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- B(At least one of name and hwclock are required.)
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- I(Only used on Linux.)
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type: str
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aliases: [ rtc ]
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choices: [ local, UTC ]
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notes:
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- On SmartOS the C(sm-set-timezone) utility (part of the smtools package) is required to set the zone timezone
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- On AIX only Olson/tz database timezones are useable (POSIX is not supported).
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- An OS reboot is also required on AIX for the new timezone setting to take effect.
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author:
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- Shinichi TAMURA (@tmshn)
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- Jasper Lievisse Adriaanse (@jasperla)
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- Indrajit Raychaudhuri (@indrajitr)
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'''
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RETURN = r'''
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diff:
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description: The differences about the given arguments.
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returned: success
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type: complex
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contains:
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before:
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description: The values before change
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type: dict
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after:
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description: The values after change
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type: dict
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'''
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EXAMPLES = r'''
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- name: Set timezone to Asia/Tokyo
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timezone:
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name: Asia/Tokyo
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'''
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import errno
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import os
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import platform
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import random
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import re
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import string
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import filecmp
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from ansible.module_utils.basic import AnsibleModule, get_distribution
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from ansible.module_utils.six import iteritems
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class Timezone(object):
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"""This is a generic Timezone manipulation class that is subclassed based on platform.
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A subclass may wish to override the following action methods:
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- get(key, phase) ... get the value from the system at `phase`
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- set(key, value) ... set the value to the current system
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"""
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def __new__(cls, module):
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"""Return the platform-specific subclass.
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It does not use load_platform_subclass() because it needs to judge based
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on whether the `timedatectl` command exists and is available.
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Args:
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module: The AnsibleModule.
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"""
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if platform.system() == 'Linux':
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timedatectl = module.get_bin_path('timedatectl')
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if timedatectl is not None:
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rc, stdout, stderr = module.run_command(timedatectl)
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if rc == 0:
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return super(Timezone, SystemdTimezone).__new__(SystemdTimezone)
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else:
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module.warn('timedatectl command was found but not usable: %s. using other method.' % stderr)
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return super(Timezone, NosystemdTimezone).__new__(NosystemdTimezone)
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else:
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return super(Timezone, NosystemdTimezone).__new__(NosystemdTimezone)
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elif re.match('^joyent_.*Z', platform.version()):
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# platform.system() returns SunOS, which is too broad. So look at the
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# platform version instead. However we have to ensure that we're not
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# running in the global zone where changing the timezone has no effect.
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zonename_cmd = module.get_bin_path('zonename')
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if zonename_cmd is not None:
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(rc, stdout, stderr) = module.run_command(zonename_cmd)
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if rc == 0 and stdout.strip() == 'global':
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module.fail_json(msg='Adjusting timezone is not supported in Global Zone')
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return super(Timezone, SmartOSTimezone).__new__(SmartOSTimezone)
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elif platform.system() == 'Darwin':
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return super(Timezone, DarwinTimezone).__new__(DarwinTimezone)
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elif re.match('^(Free|Net|Open)BSD', platform.platform()):
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return super(Timezone, BSDTimezone).__new__(BSDTimezone)
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elif platform.system() == 'AIX':
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AIXoslevel = int(platform.version() + platform.release())
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if AIXoslevel >= 61:
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return super(Timezone, AIXTimezone).__new__(AIXTimezone)
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else:
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module.fail_json(msg='AIX os level must be >= 61 for timezone module (Target: %s).' % AIXoslevel)
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else:
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# Not supported yet
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return super(Timezone, Timezone).__new__(Timezone)
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def __init__(self, module):
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"""Initialize of the class.
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Args:
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module: The AnsibleModule.
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"""
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super(Timezone, self).__init__()
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self.msg = []
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# `self.value` holds the values for each params on each phases.
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# Initially there's only info of "planned" phase, but the
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# `self.check()` function will fill out it.
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self.value = dict()
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for key in module.argument_spec:
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value = module.params[key]
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if value is not None:
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self.value[key] = dict(planned=value)
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self.module = module
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def abort(self, msg):
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"""Abort the process with error message.
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This is just the wrapper of module.fail_json().
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Args:
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msg: The error message.
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"""
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error_msg = ['Error message:', msg]
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if len(self.msg) > 0:
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error_msg.append('Other message(s):')
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error_msg.extend(self.msg)
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self.module.fail_json(msg='\n'.join(error_msg))
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def execute(self, *commands, **kwargs):
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"""Execute the shell command.
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This is just the wrapper of module.run_command().
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Args:
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*commands: The command to execute.
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It will be concatenated with single space.
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**kwargs: Only 'log' key is checked.
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If kwargs['log'] is true, record the command to self.msg.
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Returns:
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stdout: Standard output of the command.
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"""
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command = ' '.join(commands)
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(rc, stdout, stderr) = self.module.run_command(command, check_rc=True)
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if kwargs.get('log', False):
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self.msg.append('executed `%s`' % command)
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return stdout
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def diff(self, phase1='before', phase2='after'):
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"""Calculate the difference between given 2 phases.
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Args:
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phase1, phase2: The names of phase to compare.
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Returns:
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diff: The difference of value between phase1 and phase2.
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This is in the format which can be used with the
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`--diff` option of ansible-playbook.
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"""
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diff = {phase1: {}, phase2: {}}
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for key, value in iteritems(self.value):
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diff[phase1][key] = value[phase1]
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diff[phase2][key] = value[phase2]
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return diff
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def check(self, phase):
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"""Check the state in given phase and set it to `self.value`.
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Args:
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phase: The name of the phase to check.
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Returns:
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NO RETURN VALUE
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"""
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if phase == 'planned':
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return
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for key, value in iteritems(self.value):
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value[phase] = self.get(key, phase)
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def change(self):
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"""Make the changes effect based on `self.value`."""
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for key, value in iteritems(self.value):
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if value['before'] != value['planned']:
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self.set(key, value['planned'])
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# ===========================================
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# Platform specific methods (must be replaced by subclass).
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def get(self, key, phase):
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"""Get the value for the key at the given phase.
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Called from self.check().
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Args:
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key: The key to get the value
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phase: The phase to get the value
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Return:
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value: The value for the key at the given phase.
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"""
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self.abort('get(key, phase) is not implemented on target platform')
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def set(self, key, value):
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"""Set the value for the key (of course, for the phase 'after').
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Called from self.change().
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Args:
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key: Key to set the value
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value: Value to set
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"""
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self.abort('set(key, value) is not implemented on target platform')
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def _verify_timezone(self):
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tz = self.value['name']['planned']
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tzfile = '/usr/share/zoneinfo/%s' % tz
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if not os.path.isfile(tzfile):
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self.abort('given timezone "%s" is not available' % tz)
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return tzfile
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class SystemdTimezone(Timezone):
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"""This is a Timezone manipulation class for systemd-powered Linux.
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It uses the `timedatectl` command to check/set all arguments.
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"""
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regexps = dict(
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hwclock=re.compile(r'^\s*RTC in local TZ\s*:\s*([^\s]+)', re.MULTILINE),
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name=re.compile(r'^\s*Time ?zone\s*:\s*([^\s]+)', re.MULTILINE)
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)
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subcmds = dict(
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hwclock='set-local-rtc',
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name='set-timezone'
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)
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def __init__(self, module):
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super(SystemdTimezone, self).__init__(module)
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self.timedatectl = module.get_bin_path('timedatectl', required=True)
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self.status = dict()
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# Validate given timezone
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if 'name' in self.value:
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self._verify_timezone()
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def _get_status(self, phase):
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if phase not in self.status:
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self.status[phase] = self.execute(self.timedatectl, 'status')
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return self.status[phase]
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def get(self, key, phase):
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status = self._get_status(phase)
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value = self.regexps[key].search(status).group(1)
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if key == 'hwclock':
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# For key='hwclock'; convert yes/no -> local/UTC
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if self.module.boolean(value):
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value = 'local'
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else:
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value = 'UTC'
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return value
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def set(self, key, value):
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# For key='hwclock'; convert UTC/local -> yes/no
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if key == 'hwclock':
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if value == 'local':
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value = 'yes'
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else:
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value = 'no'
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self.execute(self.timedatectl, self.subcmds[key], value, log=True)
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class NosystemdTimezone(Timezone):
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"""This is a Timezone manipulation class for non systemd-powered Linux.
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For timezone setting, it edits the following file and reflect changes:
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- /etc/sysconfig/clock ... RHEL/CentOS
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- /etc/timezone ... Debian/Ubuntu
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For hwclock setting, it executes `hwclock --systohc` command with the
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'--utc' or '--localtime' option.
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"""
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conf_files = dict(
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name=None, # To be set in __init__
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hwclock=None, # To be set in __init__
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adjtime='/etc/adjtime'
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)
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# It's fine if all tree config files don't exist
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allow_no_file = dict(
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name=True,
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hwclock=True,
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adjtime=True
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)
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regexps = dict(
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name=None, # To be set in __init__
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hwclock=re.compile(r'^UTC\s*=\s*([^\s]+)', re.MULTILINE),
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adjtime=re.compile(r'^(UTC|LOCAL)$', re.MULTILINE)
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)
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dist_regexps = dict(
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SuSE=re.compile(r'^TIMEZONE\s*=\s*"?([^"\s]+)"?', re.MULTILINE),
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redhat=re.compile(r'^ZONE\s*=\s*"?([^"\s]+)"?', re.MULTILINE)
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)
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dist_tzline_format = dict(
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SuSE='TIMEZONE="%s"\n',
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redhat='ZONE="%s"\n'
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)
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def __init__(self, module):
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super(NosystemdTimezone, self).__init__(module)
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# Validate given timezone
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if 'name' in self.value:
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tzfile = self._verify_timezone()
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# `--remove-destination` is needed if /etc/localtime is a symlink so
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# that it overwrites it instead of following it.
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self.update_timezone = ['%s --remove-destination %s /etc/localtime' % (self.module.get_bin_path('cp', required=True), tzfile)]
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self.update_hwclock = self.module.get_bin_path('hwclock', required=True)
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# Distribution-specific configurations
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if self.module.get_bin_path('dpkg-reconfigure') is not None:
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# Debian/Ubuntu
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if 'name' in self.value:
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self.update_timezone = ['%s -sf %s /etc/localtime' % (self.module.get_bin_path('ln', required=True), tzfile),
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'%s --frontend noninteractive tzdata' % self.module.get_bin_path('dpkg-reconfigure', required=True)]
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self.conf_files['name'] = '/etc/timezone'
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self.conf_files['hwclock'] = '/etc/default/rcS'
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self.regexps['name'] = re.compile(r'^([^\s]+)', re.MULTILINE)
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self.tzline_format = '%s\n'
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else:
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# RHEL/CentOS/SUSE
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if self.module.get_bin_path('tzdata-update') is not None:
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# tzdata-update cannot update the timezone if /etc/localtime is
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# a symlink so we have to use cp to update the time zone which
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# was set above.
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if not os.path.islink('/etc/localtime'):
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self.update_timezone = [self.module.get_bin_path('tzdata-update', required=True)]
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# else:
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# self.update_timezone = 'cp --remove-destination ...' <- configured above
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self.conf_files['name'] = '/etc/sysconfig/clock'
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self.conf_files['hwclock'] = '/etc/sysconfig/clock'
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try:
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f = open(self.conf_files['name'], 'r')
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except IOError as err:
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if self._allow_ioerror(err, 'name'):
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# If the config file doesn't exist detect the distribution and set regexps.
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distribution = get_distribution()
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if distribution == 'SuSE':
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# For SUSE
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self.regexps['name'] = self.dist_regexps['SuSE']
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self.tzline_format = self.dist_tzline_format['SuSE']
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else:
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# For RHEL/CentOS
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self.regexps['name'] = self.dist_regexps['redhat']
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self.tzline_format = self.dist_tzline_format['redhat']
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else:
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self.abort('could not read configuration file "%s"' % self.conf_files['name'])
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else:
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# The key for timezone might be `ZONE` or `TIMEZONE`
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# (the former is used in RHEL/CentOS and the latter is used in SUSE linux).
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# So check the content of /etc/sysconfig/clock and decide which key to use.
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sysconfig_clock = f.read()
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f.close()
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if re.search(r'^TIMEZONE\s*=', sysconfig_clock, re.MULTILINE):
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# For SUSE
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self.regexps['name'] = self.dist_regexps['SuSE']
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self.tzline_format = self.dist_tzline_format['SuSE']
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else:
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# For RHEL/CentOS
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self.regexps['name'] = self.dist_regexps['redhat']
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self.tzline_format = self.dist_tzline_format['redhat']
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def _allow_ioerror(self, err, key):
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# In some cases, even if the target file does not exist,
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# simply creating it may solve the problem.
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# In such cases, we should continue the configuration rather than aborting.
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if err.errno != errno.ENOENT:
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# If the error is not ENOENT ("No such file or directory"),
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# (e.g., permission error, etc), we should abort.
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return False
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return self.allow_no_file.get(key, False)
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def _edit_file(self, filename, regexp, value, key):
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"""Replace the first matched line with given `value`.
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If `regexp` matched more than once, other than the first line will be deleted.
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Args:
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filename: The name of the file to edit.
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regexp: The regular expression to search with.
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value: The line which will be inserted.
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key: For what key the file is being editted.
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"""
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# Read the file
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try:
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file = open(filename, 'r')
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except IOError as err:
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if self._allow_ioerror(err, key):
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lines = []
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else:
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self.abort('tried to configure %s using a file "%s", but could not read it' % (key, filename))
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else:
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lines = file.readlines()
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file.close()
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# Find the all matched lines
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matched_indices = []
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for i, line in enumerate(lines):
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if regexp.search(line):
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matched_indices.append(i)
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if len(matched_indices) > 0:
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insert_line = matched_indices[0]
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else:
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insert_line = 0
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# Remove all matched lines
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for i in matched_indices[::-1]:
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del lines[i]
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# ...and insert the value
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lines.insert(insert_line, value)
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# Write the changes
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try:
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file = open(filename, 'w')
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except IOError:
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self.abort('tried to configure %s using a file "%s", but could not write to it' % (key, filename))
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else:
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file.writelines(lines)
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file.close()
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self.msg.append('Added 1 line and deleted %s line(s) on %s' % (len(matched_indices), filename))
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def _get_value_from_config(self, key, phase):
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filename = self.conf_files[key]
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try:
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file = open(filename, mode='r')
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except IOError as err:
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if self._allow_ioerror(err, key):
|
|
if key == 'hwclock':
|
|
return 'n/a'
|
|
elif key == 'adjtime':
|
|
return 'UTC'
|
|
elif key == 'name':
|
|
return 'n/a'
|
|
else:
|
|
self.abort('tried to configure %s using a file "%s", but could not read it' % (key, filename))
|
|
else:
|
|
status = file.read()
|
|
file.close()
|
|
try:
|
|
value = self.regexps[key].search(status).group(1)
|
|
except AttributeError:
|
|
if key == 'hwclock':
|
|
# If we cannot find UTC in the config that's fine.
|
|
return 'n/a'
|
|
elif key == 'adjtime':
|
|
# If we cannot find UTC/LOCAL in /etc/cannot that means UTC
|
|
# will be used by default.
|
|
return 'UTC'
|
|
elif key == 'name':
|
|
if phase == 'before':
|
|
# In 'before' phase UTC/LOCAL doesn't need to be set in
|
|
# the timezone config file, so we ignore this error.
|
|
return 'n/a'
|
|
else:
|
|
self.abort('tried to configure %s using a file "%s", but could not find a valid value in it' % (key, filename))
|
|
else:
|
|
if key == 'hwclock':
|
|
# convert yes/no -> UTC/local
|
|
if self.module.boolean(value):
|
|
value = 'UTC'
|
|
else:
|
|
value = 'local'
|
|
elif key == 'adjtime':
|
|
# convert LOCAL -> local
|
|
if value != 'UTC':
|
|
value = value.lower()
|
|
return value
|
|
|
|
def get(self, key, phase):
|
|
planned = self.value[key]['planned']
|
|
if key == 'hwclock':
|
|
value = self._get_value_from_config(key, phase)
|
|
if value == planned:
|
|
# If the value in the config file is the same as the 'planned'
|
|
# value, we need to check /etc/adjtime.
|
|
value = self._get_value_from_config('adjtime', phase)
|
|
elif key == 'name':
|
|
value = self._get_value_from_config(key, phase)
|
|
if value == planned:
|
|
# If the planned values is the same as the one in the config file
|
|
# we need to check if /etc/localtime is also set to the 'planned' zone.
|
|
if os.path.islink('/etc/localtime'):
|
|
# If /etc/localtime is a symlink and is not set to the TZ we 'planned'
|
|
# to set, we need to return the TZ which the symlink points to.
|
|
if os.path.exists('/etc/localtime'):
|
|
# We use readlink() because on some distros zone files are symlinks
|
|
# to other zone files, so it's hard to get which TZ is actually set
|
|
# if we follow the symlink.
|
|
path = os.readlink('/etc/localtime')
|
|
linktz = re.search(r'/usr/share/zoneinfo/(.*)', path, re.MULTILINE)
|
|
if linktz:
|
|
valuelink = linktz.group(1)
|
|
if valuelink != planned:
|
|
value = valuelink
|
|
else:
|
|
# Set current TZ to 'n/a' if the symlink points to a path
|
|
# which isn't a zone file.
|
|
value = 'n/a'
|
|
else:
|
|
# Set current TZ to 'n/a' if the symlink to the zone file is broken.
|
|
value = 'n/a'
|
|
else:
|
|
# If /etc/localtime is not a symlink best we can do is compare it with
|
|
# the 'planned' zone info file and return 'n/a' if they are different.
|
|
try:
|
|
if not filecmp.cmp('/etc/localtime', '/usr/share/zoneinfo/' + planned):
|
|
return 'n/a'
|
|
except Exception:
|
|
return 'n/a'
|
|
else:
|
|
self.abort('unknown parameter "%s"' % key)
|
|
return value
|
|
|
|
def set_timezone(self, value):
|
|
self._edit_file(filename=self.conf_files['name'],
|
|
regexp=self.regexps['name'],
|
|
value=self.tzline_format % value,
|
|
key='name')
|
|
for cmd in self.update_timezone:
|
|
self.execute(cmd)
|
|
|
|
def set_hwclock(self, value):
|
|
if value == 'local':
|
|
option = '--localtime'
|
|
utc = 'no'
|
|
else:
|
|
option = '--utc'
|
|
utc = 'yes'
|
|
if self.conf_files['hwclock'] is not None:
|
|
self._edit_file(filename=self.conf_files['hwclock'],
|
|
regexp=self.regexps['hwclock'],
|
|
value='UTC=%s\n' % utc,
|
|
key='hwclock')
|
|
self.execute(self.update_hwclock, '--systohc', option, log=True)
|
|
|
|
def set(self, key, value):
|
|
if key == 'name':
|
|
self.set_timezone(value)
|
|
elif key == 'hwclock':
|
|
self.set_hwclock(value)
|
|
else:
|
|
self.abort('unknown parameter "%s"' % key)
|
|
|
|
|
|
class SmartOSTimezone(Timezone):
|
|
"""This is a Timezone manipulation class for SmartOS instances.
|
|
|
|
It uses the C(sm-set-timezone) utility to set the timezone, and
|
|
inspects C(/etc/default/init) to determine the current timezone.
|
|
|
|
NB: A zone needs to be rebooted in order for the change to be
|
|
activated.
|
|
"""
|
|
|
|
def __init__(self, module):
|
|
super(SmartOSTimezone, self).__init__(module)
|
|
self.settimezone = self.module.get_bin_path('sm-set-timezone', required=False)
|
|
if not self.settimezone:
|
|
module.fail_json(msg='sm-set-timezone not found. Make sure the smtools package is installed.')
|
|
|
|
def get(self, key, phase):
|
|
"""Lookup the current timezone name in `/etc/default/init`. If anything else
|
|
is requested, or if the TZ field is not set we fail.
|
|
"""
|
|
if key == 'name':
|
|
try:
|
|
f = open('/etc/default/init', 'r')
|
|
for line in f:
|
|
m = re.match('^TZ=(.*)$', line.strip())
|
|
if m:
|
|
return m.groups()[0]
|
|
except Exception:
|
|
self.module.fail_json(msg='Failed to read /etc/default/init')
|
|
else:
|
|
self.module.fail_json(msg='%s is not a supported option on target platform' % key)
|
|
|
|
def set(self, key, value):
|
|
"""Set the requested timezone through sm-set-timezone, an invalid timezone name
|
|
will be rejected and we have no further input validation to perform.
|
|
"""
|
|
if key == 'name':
|
|
cmd = 'sm-set-timezone %s' % value
|
|
|
|
(rc, stdout, stderr) = self.module.run_command(cmd)
|
|
|
|
if rc != 0:
|
|
self.module.fail_json(msg=stderr)
|
|
|
|
# sm-set-timezone knows no state and will always set the timezone.
|
|
# XXX: https://github.com/joyent/smtools/pull/2
|
|
m = re.match(r'^\* Changed (to)? timezone (to)? (%s).*' % value, stdout.splitlines()[1])
|
|
if not (m and m.groups()[-1] == value):
|
|
self.module.fail_json(msg='Failed to set timezone')
|
|
else:
|
|
self.module.fail_json(msg='%s is not a supported option on target platform' % key)
|
|
|
|
|
|
class DarwinTimezone(Timezone):
|
|
"""This is the timezone implementation for Darwin which, unlike other *BSD
|
|
implementations, uses the `systemsetup` command on Darwin to check/set
|
|
the timezone.
|
|
"""
|
|
|
|
regexps = dict(
|
|
name=re.compile(r'^\s*Time ?Zone\s*:\s*([^\s]+)', re.MULTILINE)
|
|
)
|
|
|
|
def __init__(self, module):
|
|
super(DarwinTimezone, self).__init__(module)
|
|
self.systemsetup = module.get_bin_path('systemsetup', required=True)
|
|
self.status = dict()
|
|
# Validate given timezone
|
|
if 'name' in self.value:
|
|
self._verify_timezone()
|
|
|
|
def _get_current_timezone(self, phase):
|
|
"""Lookup the current timezone via `systemsetup -gettimezone`."""
|
|
if phase not in self.status:
|
|
self.status[phase] = self.execute(self.systemsetup, '-gettimezone')
|
|
return self.status[phase]
|
|
|
|
def _verify_timezone(self):
|
|
tz = self.value['name']['planned']
|
|
# Lookup the list of supported timezones via `systemsetup -listtimezones`.
|
|
# Note: Skip the first line that contains the label 'Time Zones:'
|
|
out = self.execute(self.systemsetup, '-listtimezones').splitlines()[1:]
|
|
tz_list = list(map(lambda x: x.strip(), out))
|
|
if tz not in tz_list:
|
|
self.abort('given timezone "%s" is not available' % tz)
|
|
return tz
|
|
|
|
def get(self, key, phase):
|
|
if key == 'name':
|
|
status = self._get_current_timezone(phase)
|
|
value = self.regexps[key].search(status).group(1)
|
|
return value
|
|
else:
|
|
self.module.fail_json(msg='%s is not a supported option on target platform' % key)
|
|
|
|
def set(self, key, value):
|
|
if key == 'name':
|
|
self.execute(self.systemsetup, '-settimezone', value, log=True)
|
|
else:
|
|
self.module.fail_json(msg='%s is not a supported option on target platform' % key)
|
|
|
|
|
|
class BSDTimezone(Timezone):
|
|
"""This is the timezone implementation for *BSD which works simply through
|
|
updating the `/etc/localtime` symlink to point to a valid timezone name under
|
|
`/usr/share/zoneinfo`.
|
|
"""
|
|
|
|
def __init__(self, module):
|
|
super(BSDTimezone, self).__init__(module)
|
|
|
|
def __get_timezone(self):
|
|
zoneinfo_dir = '/usr/share/zoneinfo/'
|
|
localtime_file = '/etc/localtime'
|
|
|
|
# Strategy 1:
|
|
# If /etc/localtime does not exist, assum the timezone is UTC.
|
|
if not os.path.exists(localtime_file):
|
|
self.module.warn('Could not read /etc/localtime. Assuming UTC.')
|
|
return 'UTC'
|
|
|
|
# Strategy 2:
|
|
# Follow symlink of /etc/localtime
|
|
zoneinfo_file = localtime_file
|
|
while not zoneinfo_file.startswith(zoneinfo_dir):
|
|
try:
|
|
zoneinfo_file = os.readlink(localtime_file)
|
|
except OSError:
|
|
# OSError means "end of symlink chain" or broken link.
|
|
break
|
|
else:
|
|
return zoneinfo_file.replace(zoneinfo_dir, '')
|
|
|
|
# Strategy 3:
|
|
# (If /etc/localtime is not symlinked)
|
|
# Check all files in /usr/share/zoneinfo and return first non-link match.
|
|
for dname, dirs, fnames in sorted(os.walk(zoneinfo_dir)):
|
|
for fname in sorted(fnames):
|
|
zoneinfo_file = os.path.join(dname, fname)
|
|
if not os.path.islink(zoneinfo_file) and filecmp.cmp(zoneinfo_file, localtime_file):
|
|
return zoneinfo_file.replace(zoneinfo_dir, '')
|
|
|
|
# Strategy 4:
|
|
# As a fall-back, return 'UTC' as default assumption.
|
|
self.module.warn('Could not identify timezone name from /etc/localtime. Assuming UTC.')
|
|
return 'UTC'
|
|
|
|
def get(self, key, phase):
|
|
"""Lookup the current timezone by resolving `/etc/localtime`."""
|
|
if key == 'name':
|
|
return self.__get_timezone()
|
|
else:
|
|
self.module.fail_json(msg='%s is not a supported option on target platform' % key)
|
|
|
|
def set(self, key, value):
|
|
if key == 'name':
|
|
# First determine if the requested timezone is valid by looking in
|
|
# the zoneinfo directory.
|
|
zonefile = '/usr/share/zoneinfo/' + value
|
|
try:
|
|
if not os.path.isfile(zonefile):
|
|
self.module.fail_json(msg='%s is not a recognized timezone' % value)
|
|
except Exception:
|
|
self.module.fail_json(msg='Failed to stat %s' % zonefile)
|
|
|
|
# Now (somewhat) atomically update the symlink by creating a new
|
|
# symlink and move it into place. Otherwise we have to remove the
|
|
# original symlink and create the new symlink, however that would
|
|
# create a race condition in case another process tries to read
|
|
# /etc/localtime between removal and creation.
|
|
suffix = "".join([random.choice(string.ascii_letters + string.digits) for x in range(0, 10)])
|
|
new_localtime = '/etc/localtime.' + suffix
|
|
|
|
try:
|
|
os.symlink(zonefile, new_localtime)
|
|
os.rename(new_localtime, '/etc/localtime')
|
|
except Exception:
|
|
os.remove(new_localtime)
|
|
self.module.fail_json(msg='Could not update /etc/localtime')
|
|
else:
|
|
self.module.fail_json(msg='%s is not a supported option on target platform' % key)
|
|
|
|
|
|
class AIXTimezone(Timezone):
|
|
"""This is a Timezone manipulation class for AIX instances.
|
|
|
|
It uses the C(chtz) utility to set the timezone, and
|
|
inspects C(/etc/environment) to determine the current timezone.
|
|
|
|
While AIX time zones can be set using two formats (POSIX and
|
|
Olson) the prefered method is Olson.
|
|
See the following article for more information:
|
|
https://developer.ibm.com/articles/au-aix-posix/
|
|
|
|
NB: AIX needs to be rebooted in order for the change to be
|
|
activated.
|
|
"""
|
|
|
|
def __init__(self, module):
|
|
super(AIXTimezone, self).__init__(module)
|
|
self.settimezone = self.module.get_bin_path('chtz', required=True)
|
|
|
|
def __get_timezone(self):
|
|
""" Return the current value of TZ= in /etc/environment """
|
|
try:
|
|
f = open('/etc/environment', 'r')
|
|
etcenvironment = f.read()
|
|
f.close()
|
|
except Exception:
|
|
self.module.fail_json(msg='Issue reading contents of /etc/environment')
|
|
|
|
match = re.search(r'^TZ=(.*)$', etcenvironment, re.MULTILINE)
|
|
if match:
|
|
return match.group(1)
|
|
else:
|
|
return None
|
|
|
|
def get(self, key, phase):
|
|
"""Lookup the current timezone name in `/etc/environment`. If anything else
|
|
is requested, or if the TZ field is not set we fail.
|
|
"""
|
|
if key == 'name':
|
|
return self.__get_timezone()
|
|
else:
|
|
self.module.fail_json(msg='%s is not a supported option on target platform' % key)
|
|
|
|
def set(self, key, value):
|
|
"""Set the requested timezone through chtz, an invalid timezone name
|
|
will be rejected and we have no further input validation to perform.
|
|
"""
|
|
if key == 'name':
|
|
# chtz seems to always return 0 on AIX 7.2, even for invalid timezone values.
|
|
# It will only return non-zero if the chtz command itself fails, it does not check for
|
|
# valid timezones. We need to perform a basic check to confirm that the timezone
|
|
# definition exists in /usr/share/lib/zoneinfo
|
|
# This does mean that we can only support Olson for now. The below commented out regex
|
|
# detects Olson date formats, so in the future we could detect Posix or Olson and
|
|
# act accordingly.
|
|
|
|
# regex_olson = re.compile('^([a-z0-9_\-\+]+\/?)+$', re.IGNORECASE)
|
|
# if not regex_olson.match(value):
|
|
# msg = 'Supplied timezone (%s) does not appear to a be valid Olson string' % value
|
|
# self.module.fail_json(msg=msg)
|
|
|
|
# First determine if the requested timezone is valid by looking in the zoneinfo
|
|
# directory.
|
|
zonefile = '/usr/share/lib/zoneinfo/' + value
|
|
try:
|
|
if not os.path.isfile(zonefile):
|
|
self.module.fail_json(msg='%s is not a recognized timezone.' % value)
|
|
except Exception:
|
|
self.module.fail_json(msg='Failed to check %s.' % zonefile)
|
|
|
|
# Now set the TZ using chtz
|
|
cmd = 'chtz %s' % value
|
|
(rc, stdout, stderr) = self.module.run_command(cmd)
|
|
|
|
if rc != 0:
|
|
self.module.fail_json(msg=stderr)
|
|
|
|
# The best condition check we can do is to check the value of TZ after making the
|
|
# change.
|
|
TZ = self.__get_timezone()
|
|
if TZ != value:
|
|
msg = 'TZ value does not match post-change (Actual: %s, Expected: %s).' % (TZ, value)
|
|
self.module.fail_json(msg=msg)
|
|
|
|
else:
|
|
self.module.fail_json(msg='%s is not a supported option on target platform' % key)
|
|
|
|
|
|
def main():
|
|
# Construct 'module' and 'tz'
|
|
module = AnsibleModule(
|
|
argument_spec=dict(
|
|
hwclock=dict(type='str', choices=['local', 'UTC'], aliases=['rtc']),
|
|
name=dict(type='str'),
|
|
),
|
|
required_one_of=[
|
|
['hwclock', 'name']
|
|
],
|
|
supports_check_mode=True,
|
|
)
|
|
tz = Timezone(module)
|
|
|
|
# Check the current state
|
|
tz.check(phase='before')
|
|
if module.check_mode:
|
|
diff = tz.diff('before', 'planned')
|
|
# In check mode, 'planned' state is treated as 'after' state
|
|
diff['after'] = diff.pop('planned')
|
|
else:
|
|
# Make change
|
|
tz.change()
|
|
# Check the current state
|
|
tz.check(phase='after')
|
|
# Examine if the current state matches planned state
|
|
(after, planned) = tz.diff('after', 'planned').values()
|
|
if after != planned:
|
|
tz.abort('still not desired state, though changes have made - '
|
|
'planned: %s, after: %s' % (str(planned), str(after)))
|
|
diff = tz.diff('before', 'after')
|
|
|
|
changed = (diff['before'] != diff['after'])
|
|
if len(tz.msg) > 0:
|
|
module.exit_json(changed=changed, diff=diff, msg='\n'.join(tz.msg))
|
|
else:
|
|
module.exit_json(changed=changed, diff=diff)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|