This is a text-only version of the following page on https://raymii.org: --- Title : Bind DNS Query Graph Charts with GNUPlot Author : Remy van Elst Date : 13-08-2013 URL : https://raymii.org/s/software/Bind-GNUPlot-DNS-Bar-Graph.html Format : Markdown/HTML --- ![bind][1] This is a very simple script which uses GNUplot to create graphs of Bind Query logs.

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### Bind logging Enable query logging in Bind: # /etc/bind/named.conf.options logging{ channel system_log { file "/var/log/named/sys.log" versions unlimited size 2g; severity warning; print-time yes; print-severity yes; print-category yes; }; channel queries_log { file "/var/log/named/queries.log" versions unlimited size 2g; severity info; print-time no; }; category default{ system_log; }; category queries{ queries_log; }; }; Don't forget to create the `/var/log/named` folder: mkdir /var/log/named chown bind:bind /var/log/named Why `/var/log/named`? Because AppArmor on Ubuntu allows bind to write to this path, and I don't like messing with either AppArmor or SELinux. ### Bind log parsing Use the following command line to get the 20 most queries domains awk '{ print $4 }' /var/log/named/queries.log | sort | uniq -c | sort -n | tail -n 20 > dns-data Example data: 83094 metrics-api.librato.com 83689 collector-2.newrelic.com 84165 puppetmaster.int 82445 ntp0.nl.net The use the gnuplot script to create the graph: gnuplot < plot.gplt And there you go. This is the GNUPlot script if you don't want to check out the repo. set term png truecolor size 800,600 set output "data.png" set xlabel "Domains" set ylabel "Queries" set title "DNS Usage" set grid set xtics rotate by -45 axis out offset 0,1.5 set boxwidth 1 relative set style fill transparent solid 0.5 border rgb"black" plot "dns-data" u 1:xtic(2) w boxes lc rgb"blue" Because GNUplot has no easy support for horizotal bar graphs, if you want it horizontal, rotate it with Imagemagick: convert data.png -rotate 90 data-90.png You now have a nice image overview of DNS queries. ### Links * [Raymii.org][3] * [Github][4] ### License Copyright (C) 2013 Remy van Elst This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . [1]: https://raymii.org/s/inc/img/dns-report.png [2]: https://www.digitalocean.com/?refcode=7435ae6b8212 [3]: https://raymii.org/s/software/Bind-GNUPlot-DNS-Bar-Graph.html [4]: https://github.com/RaymiiOrg/bind-gnuplot-reports --- License: All the text on this website is free as in freedom unless stated otherwise. This means you can use it in any way you want, you can copy it, change it the way you like and republish it, as long as you release the (modified) content under the same license to give others the same freedoms you've got and place my name and a link to this site with the article as source. This site uses Google Analytics for statistics and Google Adwords for advertisements. You are tracked and Google knows everything about you. Use an adblocker like ublock-origin if you don't want it. All the code on this website is licensed under the GNU GPL v3 license unless already licensed under a license which does not allows this form of licensing or if another license is stated on that page / in that software: This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Just to be clear, the information on this website is for meant for educational purposes and you use it at your own risk. I do not take responsibility if you screw something up. Use common sense, do not 'rm -rf /' as root for example. If you have any questions then do not hesitate to contact me. See https://raymii.org/s/static/About.html for details.