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#!/bin/bash
# -*- sh -*-
: <<=cut
=head1 NAME
dnsmasq - Plugin to monitor dnsmasq queries
=head1 APPLICABLE SYSTEMS
All systems with "bash", "sed" and "dnsmasq"
=head1 CONFIGURATION
The following is the default configuration
[dnsmasq]
env.logfile /var/log/dnsmasq/dnsmasq.log
The user running this plugin needs read access to the
dnsmasq logfiles:
[dnsmasq]
user root
=head1 INTERPRETATION
This plugin shows a graph with the number of forwarded, cached and
blocked dns queries.
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=head1 VERSION
0.0.1
=head1 BUGS
=head1 AUTHOR
Me, myself and I
Based on dnsmasq plugin by: notracking <https://github.com/notracking>
Based on fail2ban plugin by: Stig Sandbeck Mathisen <ssm@fnord.no>
=head1 LICENSE
GPLv2
=cut
##############################
# Configurable variables
logfile=${logfile:-/var/log/dnsmasq/dnsmasq.log}
# Print the munin values
values() {
echo -n "dnsmasq_forwarded.value "
cat ${logfile} | sed -n "/^$(date --date='5 minutes ago' '+%b %_d %H:%M')/,\$p" | grep ": forwarded" | wc -l
echo -n "dnsmasq_cached.value "
cat ${logfile} | sed -n "/^$(date --date='5 minutes ago' '+%b %_d %H:%M')/,\$p" | grep ": cached" | wc -l
echo -n "dnsmasq_blocked.value "
cat ${logfile} | sed -n "/^$(date --date='5 minutes ago' '+%b %_d %H:%M')/,\$p" | grep "/block.list" | wc -l
}
# Print the munin config
config() {
echo 'graph_title DNS queries'
echo 'graph_info This graph shows the number of queries resolved by dnsmasq'
echo 'graph_category network'
echo 'graph_vlabel Number of queries'
echo 'graph_args --base 1000 -l 0'
echo 'graph_total total'
echo 'dnsmasq_forwarded.label forwarded'
echo 'dnsmasq_cached.label cached'
echo 'dnsmasq_blocked.label blocked'
}
# Print autoconfiguration hint
autoconf() {
if [ -f ${logfile} ]
then
echo "yes"
else
echo "no (${logfile} not found)"
fi
exit
}
##############################
# Main
case $1 in
config)
config
;;
autoconf)
autoconf
;;
*)
values
;;
esac
|
