#
# Copyright (C) 2000, 2001, 2004, 2007, 2012, 2016 Internet Systems Consortium, Inc. ("ISC")
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# $Id$
# A simple nanny to make sure named stays running.
$pid_file_location = '/var/run/named.pid';
$nameserver_location = 'localhost';
$dig_program = 'dig';
$named_program = 'named';
fork() && exit();
for (;;) {
$pid = 0;
close(FILE);
chomp($pid);
$ps_command = "ps -axw | grep named | grep $pid | grep -v grep |";
# ps_command MUST end in a pipe (|) character!
# Make sure there's a named on the pid we just got. Since there is no
# good way to test this, use the output from ps.
close(PIPE);
chomp($line);
$dig_command = "$dig_program +short . \@$nameserver_location > /dev/null";
$return = system($dig_command);
sleep 30;
next;
if ($pid != 0) {
kill 15, $pid;
sleep 30;
}
system ($named_program);
sleep 120;
}