1 files changed, 55 insertions, 0 deletions
diff --git a/contrib/nanny/nanny.pl b/contrib/nanny/nanny.pl
new file mode 100644
index 0000000..16ecf1f
--- /dev/null
+++ b/contrib/nanny/nanny.pl
@@ -0,0 +1,55 @@
+#!/usr/bin/perl
+#
+# Copyright (C) 2004, 2007  Internet Systems Consortium, Inc. ("ISC")
+# Copyright (C) 2000, 2001  Internet Software Consortium.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+# $Id: nanny.pl,v 1.11 2007/06/19 23:47:07 tbox Exp $
+
+# 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;
+	open(FILE, $pid_file_location) || goto restart;
+	$pid = <FILE>;
+	close(FILE);
+	chomp($pid);
+
+	$res = kill 0, $pid;
+
+	goto restart if ($res == 0);
+
+	$dig_command =
+	       "$dig_program +short . \@$nameserver_location > /dev/null";
+	$return = system($dig_command);
+	goto restart if ($return == 9);
+
+	sleep 30;
+	next;
+
+ restart:
+	if ($pid != 0) {
+		kill 15, $pid;
+		sleep 30;
+	}
+	system ($named_program);
+	sleep 120;
+}