define site::sysctl ($key, $value, $target=Linux, $ensure = present) {
	include site
	case $ensure {
		present: {}
		absent:  {}
		default: { fail ( "Unknown ensure value: '$ensure'" ) }
	}

	if $::kernel == $target {
		file {
			"/etc/sysctl.d/${name}.conf":
				ensure  => $ensure,
				owner   => root,
				group   => root,
				mode    => '0644',
				content => "${key} = ${value}\n",
				notify  => Service['procps']
		}
	}
}