57 lines
1.7 KiB
Python
57 lines
1.7 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright 2014-2015 Canonical Limited.
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#
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# This file is part of charm-helpers.
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#
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# charm-helpers is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3 as
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# published by the Free Software Foundation.
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#
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# charm-helpers 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 Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
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__author__ = 'Jorge Niedbalski R. <jorge.niedbalski@canonical.com>'
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import yaml
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from subprocess import check_call
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from charmhelpers.core.hookenv import (
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log,
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DEBUG,
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ERROR,
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)
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def create(sysctl_dict, sysctl_file):
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"""Creates a sysctl.conf file from a YAML associative array
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:param sysctl_dict: a YAML-formatted string of sysctl options eg "{ 'kernel.max_pid': 1337 }"
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:type sysctl_dict: str
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:param sysctl_file: path to the sysctl file to be saved
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:type sysctl_file: str or unicode
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:returns: None
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"""
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try:
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sysctl_dict_parsed = yaml.safe_load(sysctl_dict)
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except yaml.YAMLError:
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log("Error parsing YAML sysctl_dict: {}".format(sysctl_dict),
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level=ERROR)
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return
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with open(sysctl_file, "w") as fd:
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for key, value in sysctl_dict_parsed.items():
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fd.write("{}={}\n".format(key, value))
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log("Updating sysctl_file: %s values: %s" % (sysctl_file, sysctl_dict_parsed),
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level=DEBUG)
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check_call(["sysctl", "-p", sysctl_file])
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