138 lines
2.4 KiB
Perl
Executable File
138 lines
2.4 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# -*- perl -*-
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=head1 NAME
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bind9_rr - Plugin to monitor usage of bind 9 servers
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=head1 CONFIGURATION
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This plugin is configurable environment variables. The following
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shows the default settings:
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[bind9_rr]
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env.logfile /var/log/bind9/query.log
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You must also configure query logging in your named.conf. Use a stanza
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such as this:
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logging {
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channel query {
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file "query.log" versions 2 size 1m;
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print-time yes;
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severity info;
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};
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category queries { query; };
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};
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=head1 SEE ALSO
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=over
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=item * L<http://blog.larsstrand.org/2008/02/how-to-monitor-bind-with-munin.html>
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=item * BIND Administrator Reference Manual
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=back
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=head1 AUTHOR
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Nicolai Langfeldt
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Remi Paulmier
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=head1 LICENSE
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GPLv2
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=head1 MAGIC MARKERS
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#%# family=manual
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=cut
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use strict;
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my $QUERYLOG = $ENV{logfile} || '/var/log/bind9/query.log';
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my $STATEFILE= "$ENV{MUNIN_PLUGSTATE}/bind9_rr.state";
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my $OTHER=0;
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my %IN;
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sub get_state {
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if (! -f $STATEFILE) {
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open(Q, ">", $STATEFILE);
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close(Q);
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}
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open(Q,"< $STATEFILE") or die ("Cannot open state file");
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while (<Q>) {
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chomp;
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my ($q,$n) = split(/\s+/,$_,2);
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$IN{$q}=$n unless defined($IN{$q});
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}
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close(Q);
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}
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sub do_stats {
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my $k;
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open(Q,"< $QUERYLOG") or die "$!";
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while (<Q>) {
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chomp;
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if (/: (view \S+\: |)query\: (\S+) (\w+) (\w+)/) {
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if ($3 eq 'IN' and $4 !~ /^TYPE/) {
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my $crr = lc $2;
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$IN{$crr}++;
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}
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}
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}
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close(Q);
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get_state;
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my @INkeys = sort { $IN{$b} <=> $IN{$a} } keys %IN;
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open(Q,"> $STATEFILE") or die;
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foreach $k (@INkeys[0 .. 19]) {
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next if not defined $k;
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my $l = $k; $k =~ tr/\./_/;
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print "rr_$k.value ",$IN{$l},"\n";
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print Q "$l ",$IN{$l},"\n";
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}
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close(Q);
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}
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sub do_config {
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my $k;
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print "graph_title DNS Queries by RR
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graph_category dns
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graph_vlabel Queries / \${graph_period}
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";
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get_state;
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my @INkeys = sort { $IN{$b} <=> $IN{$a} } keys %IN;
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foreach $k (@INkeys[0 .. 19]) {
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next if not defined $k;
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my $l = $k; $k =~ tr/\./_/;
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print "rr_$k.label $l
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rr_$k.type DERIVE
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rr_$k.min 0
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rr_$k.draw STACK
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";
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}
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};
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if (defined($ARGV[0]) and ($ARGV[0] eq 'config')) {
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do_config;
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exit(0);
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}
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do_stats;
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# vim:syntax=perl
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