/usr/share/munin/plugins/bind9 is in munin-node 1.4.6-3ubuntu3.4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | #!/usr/bin/perl -w
# -*- perl -*-
=head1 NAME
bind9 - Plugin to monitor usage of bind 9 servers
=head1 CONFIGURATION
This plugin is configurable environment variables. The following
shows the default settings:
[bind9]
env.logfile /var/log/bind9/query.log
You must also configure query logging in your named.conf. Please
contribute your documentation about how to do that. Thanks.
=head1 AUTHOR
Nicolai Langfeldt
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=manual
=cut
use strict;
my $QUERYLOG = $ENV{logfile} || '/var/log/bind9/query.log';
my $STATEFILE= "$ENV{MUNIN_PLUGSTATE}/bind9.state";
my $OTHER=0;
my %IN;
sub get_state {
if (! -f $STATEFILE) {
open(Q, ">", $STATEFILE);
close(Q);
}
open(Q,"< $STATEFILE") or die ("Cannot open state file");
while (<Q>) {
chomp;
my ($q,$n) = split(/\s+/,$_,2);
$IN{$q}=$n unless defined($IN{$q});
}
close(Q);
}
sub do_stats {
my $k;
open(Q,"< $QUERYLOG") or die "$!";
while (<Q>) {
chomp;
if (/client \d+\.\d+.\d+.\d+\#\d+: (view \S+\: |)query\: \S+ (\w+) (\w+)/) {
if ($2 eq 'IN' and $3 !~ /^TYPE/) {
$IN{$3}++;
} else {
$OTHER++;
}
}
}
close(Q);
get_state;
open(Q,"> $STATEFILE") or die;
foreach $k (keys %IN) {
print "query_$k.value ",$IN{$k},"\n";
print Q "$k ",$IN{$k},"\n";
}
close(Q);
print "query_other.value ",$OTHER,"\n";
}
sub do_config {
my $k;
print "graph_title DNS Queries by type
graph_category BIND
graph_vlabel Queries / \${graph_period}
query_other.label Other
query_other.type DERIVE
query_other.min 0
query_other.draw AREA
";
get_state;
foreach $k (keys %IN) {
print "query_$k.label $k
query_$k.type DERIVE
query_$k.min 0
query_$k.draw STACK
";
}
};
if (defined($ARGV[0]) and ($ARGV[0] eq 'config')) {
do_config;
exit(0);
}
do_stats;
# vim:syntax=perl
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