add check_dns2

check_dns had some problems with down nameservers. This one properly
checks the right nameserver.

1 files changed, 102 insertions, 0 deletions

diff --git a/files/plugins/check_dns2 b/files/plugins/check_dns2
new file mode 100644
index 0000000..2195631
--- /dev/null
+++ b/files/plugins/check_dns2
@@ -0,0 +1,102 @@
+#!/bin/bash
+# Written by Damien Gy
+# damien.gy+nagiosexchange(AT)gmail.com
+# 2007-09-28
+
+PROGNAME=`basename $0`
+REVISION=1.00
+TMP=/tmp/tmpdig
+DIG=/usr/bin/dig
+
+print_revision() {
+	echo $PROGNAME $REVISION
+}
+
+print_usage() {
+	echo "Usage:"
+	echo "	$PROGNAME -c|--check <host> <type> <server>"
+	echo "	$PROGNAME -h|--help"
+	echo "	$PROGNAME -v|--version"
+}
+
+print_help() {
+	print_revision
+	echo ""
+	print_usage
+	echo "Where:"
+	echo "	host	the name of the resource record to be looked up"
+	echo "	type	indicates the query required (any, a, mx, etc.)"
+	echo "	server	the name or IP address of the name server to query"
+	echo ""
+	echo "	-h|--help	prints this help screen"
+	echo ""
+	echo "	-v|--version	prints version and license information"
+	echo ""
+	echo " Created by Damien Gy, questions or problems e-mail damien.gy+nagiosexchange(AT)gmail.com"
+	echo ""
+}
+
+check_dns() {
+
+	if [ $# -ne 3 ]
+	then
+	        echo "Number of arguments incorrect"
+	        exit 3
+	fi
+	if [ ! -e $DIG ]
+	then
+		echo "$DIG not found"
+		exit 3
+	fi
+	$DIG $1 $2 @$3 > $TMP
+
+	if ( grep "status" $TMP > /dev/null )
+	then
+	        # DNS server answered
+	        if ( grep "NOERROR" $TMP > /dev/null )
+	        then
+	                echo "DNS OK "`grep "time:" $TMP`
+	                rm -f $TMP
+	                exit 0
+	        else
+	                echo "WARNING "`grep "time:" $TMP`
+	                rm -f $TMP
+	                exit 1
+	        fi
+
+	else
+	        # no answer
+	        echo "CRITICAL - Connection timed out"
+	        rm -f $TMP
+	        exit 2
+	fi
+}
+
+case "$1" in
+--help)
+                print_help
+        exit 0
+        ;;
+-h)
+                print_help
+        exit 0
+        ;;
+--version)
+                print_revision
+        exit 0
+        ;;
+-v)
+                print_revision
+        exit 0
+        ;;
+--check)
+                check_dns $2 $3 $4
+        ;;
+-c)
+                check_dns $2 $3 $4
+        ;;
+*)
+                print_usage
+        exit 3
+
+esac