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