Current File : //proc/self/root/lib/python2.7/site-packages/salt/states/sysctl.py
# -*- coding: utf-8 -*-
'''
Configuration of the kernel using sysctl
========================================
Control the kernel sysctl system.
.. code-block:: yaml
vm.swappiness:
sysctl.present:
- value: 20
'''
from __future__ import absolute_import, unicode_literals, print_function
# Import python libs
import re
# Import salt libs
from salt.exceptions import CommandExecutionError
# Import 3rd part libs
from salt.ext import six
def __virtual__():
'''
This state is only available on Minions which support sysctl
'''
return 'sysctl.show' in __salt__
def present(name, value, config=None):
'''
Ensure that the named sysctl value is set in memory and persisted to the
named configuration file. The default sysctl configuration file is
/etc/sysctl.conf
name
The name of the sysctl value to edit
value
The sysctl value to apply
config
The location of the sysctl configuration file. If not specified, the
proper location will be detected based on platform.
'''
ret = {'name': name,
'result': True,
'changes': {},
'comment': ''}
if config is None:
# Certain linux systems will ignore /etc/sysctl.conf, get the right
# default configuration file.
if 'sysctl.default_config' in __salt__:
config = __salt__['sysctl.default_config']()
else:
config = '/etc/sysctl.conf'
if __opts__['test']:
current = __salt__['sysctl.show']()
configured = __salt__['sysctl.show'](config_file=config)
if configured is None:
ret['result'] = None
ret['comment'] = (
'Sysctl option {0} might be changed, we failed to check '
'config file at {1}. The file is either unreadable, or '
'missing.'.format(name, config)
)
return ret
if name in current and name not in configured:
if re.sub(' +|\t+', ' ', current[name]) != \
re.sub(' +|\t+', ' ', six.text_type(value)):
ret['result'] = None
ret['comment'] = (
'Sysctl option {0} set to be changed to {1}'
.format(name, value)
)
return ret
else:
ret['result'] = None
ret['comment'] = (
'Sysctl value is currently set on the running system but '
'not in a config file. Sysctl option {0} set to be '
'changed to {1} in config file.'.format(name, value)
)
return ret
elif name in configured and name not in current:
ret['result'] = None
ret['comment'] = (
'Sysctl value {0} is present in configuration file but is not '
'present in the running config. The value {0} is set to be '
'changed to {1}'.format(name, value)
)
return ret
elif name in configured and name in current:
if six.text_type(value).split() == __salt__['sysctl.get'](name).split():
ret['result'] = True
ret['comment'] = (
'Sysctl value {0} = {1} is already set'
.format(name, value)
)
return ret
# otherwise, we don't have it set anywhere and need to set it
ret['result'] = None
ret['comment'] = (
'Sysctl option {0} would be changed to {1}'.format(name, value)
)
return ret
try:
update = __salt__['sysctl.persist'](name, value, config)
except CommandExecutionError as exc:
ret['result'] = False
ret['comment'] = (
'Failed to set {0} to {1}: {2}'.format(name, value, exc)
)
return ret
if update == 'Updated':
ret['changes'] = {name: value}
ret['comment'] = 'Updated sysctl value {0} = {1}'.format(name, value)
elif update == 'Already set':
ret['comment'] = (
'Sysctl value {0} = {1} is already set'
.format(name, value)
)
return ret
Mini Shell