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Viewing changes to hooks/charmhelpers/core/sysctl.py

  • Committer: Edward Hope-Morley
  • Date: 2014-10-09 10:20:37 UTC
  • Revision ID: edward.hope-morley@canonical.com-20141009102037-3z1zr5gwh6wquesu
synced charm-helpers

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hooks/charmhelpers/core/sysctl.py
 
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#!/usr/bin/env python
 
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# -*- coding: utf-8 -*-
 
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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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)
 
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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 dict of sysctl options eg { 'kernel.max_pid': 1337 }
 
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    :type sysctl_dict: dict
 
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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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    sysctl_dict = yaml.load(sysctl_dict)
 
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    with open(sysctl_file, "w") as fd:
 
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        for key, value in sysctl_dict.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),
 
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        level=DEBUG)
 
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    check_call(["sysctl", "-p", sysctl_file])