1. 1 © Bull, 2012 26 th September 2012 Dave Williams Lead Technical Architect Embedding Nagios in the Raspberry Pi

2. 2 © Bull, 2012 Agenda

3. 3 © Bull, 2012 Agenda Background The Raspberry Pi The Raspberry Pi Nagios Recipe Using DNX on the Raspberry Pi Demonstration Futures & ‘Blue Sky thinking’ Conclusion

4. 4 © Bull, 2012 Background UK based Mainframe (IBM & Honeywell) Unix (HP-UX, AIX, Solaris) Network (CASE, 3COM, CISCO) Working for Bull French Computer Manufacturer Mainframes, Unix, HPC, Security, Managed Services

5. 5 © Bull, 2012 Background System Monitoring OpenView Netview Open Master Open Source Monitoring NetSaint on AIX Nagios

6. 6 © Bull, 2012 The Raspberry Pi Eben Upton and his colleagues at the University of Cambridge’s Computer Laboratory, became concerned about the year-on-year decline in the numbers and skills levels of the A Level students applying to read Computer Science in each academic year The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. It’s a capable little PC which can be used for many of the things that your desktop PC does, like spreadsheets, word- processing and games. It also plays high-definition video.

7. 7 © Bull, 2012 The Raspberry Pi

8. 8 © Bull, 2012 The Raspberry Pi Raspberry Pi’s are nearly everywhere http://rastrack.co.uk

9. 9 © Bull, 2012 The Raspberry Pi The demo / sample system is running Debian – Squeeze Soon to be updated to Wheezy

10. 10 © Bull, 2012 The Raspberry Pi Nagios Recipe See http://exchange.nagios.org/directory/Documentation/Nagios- Core-Documentation/Nagios-and-Raspberry-PI/details http://exchange.nagios.org/directory/Documentation/Nagios- Core-Documentation/Nagios-and-Raspberry-PI/details Yes it’s already in the Nagios Core documentation set !

11. 11 © Bull, 2012 The Raspberry Pi Nagios Recipe #apt-get update #apt-get install php5 apache2 libgd2-xpm libgd2-xpm-dev libgd2-dev libpng12-dev libjpeg62-dev libgd-tools libpng12- dev libgd2-xpm libgd2-xpm-dev libssl-dev gnutls-bin iputils #groupadd www-data #groupadd nagios #adduser nagios #usermod -G nagios nagios #usermod -G www-data,nagios www-data #mkdir /usr/local/nagios #chown -R nagios:nagios /usr/local/Nagios

12. 12 © Bull, 2012 The Raspberry Pi Nagios Recipe Whoops ! We also need GD-Utils…. root@raspberrypi:/tmp# wget http://www.boutell.com/gd/http/gd-2.0.33.tar.gz http://www.boutell.com/gd/http/gd-2.0.33.tar.gz root@raspberrypi:/tmp# tar -zxvf gd-2.0.33.tar.gz root@raspberrypi:/tmp/gd-2.0.33#./configure root@raspberrypi:/tmp/gd-2.0.33# make && make install

13. 13 © Bull, 2012 The Raspberry Pi Nagios Recipe Now we need to get on and install: root@raspberrypi:/tmp# wget http://prdownloads.sourceforge.net/sourceforge/nagios/nag ios-3.4.1.tar.gz http://prdownloads.sourceforge.net/sourceforge/nagios/nag ios-3.4.1.tar.gz root@raspberrypi:/tmp# tar xzf nagios-3.4.1.tar.gz root@raspberrypi:/tmp/nagios#./configure – prefix=/usr/local/nagios –with-cgiurl=/nagios/cgi-bin –with- htmurl=/nagios/ –with-nagios-user=nagios –with-nagios- group=nagios –with-command-group=nagios And then make: root@raspberrypi:/tmp/nagios# make all

14. 14 © Bull, 2012 The Raspberry Pi Nagios Recipe root@raspberrypi:/tmp/nagios# make install-init Install and configure the directory for that holds the external command file: root@raspberrypi:/tmp/nagios# make install-commandmode Install the apache configuration: root@raspberrypi:/tmp/nagios# make install-webconf And at the end install the sample config files: root@raspberrypi:/tmp/nagios# make install-config Restart the apache daemon: root@raspberrypi:/tmp/nagios# /etc/init.d/apache2 reload

15. 15 © Bull, 2012 The Raspberry Pi Nagios Recipe Now for the plugins : apt-get install nagios-plugins nagios-snmp-plugins Or by compiling them: root@raspberrypi:/tmp# wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug /nagios-plugins-1.4.15.tar.gz root@raspberrypi:/tmp# tar xzf nagios-plugins-1.4.15.tar.gz root@raspberrypi:/tmp/nagios-plugins-1.4.15#./configure root@raspberrypi:/tmp/nagios-plugins-1.4.15# make && make install

16. 16 © Bull, 2012 Using DNX 1.Download the automated installation script to the /tmp directory: # cd /tmp 2. # wget http://assets.nagios.com/downloads/nagiosxi/scripts/NagiosXI http://assets.nagios.com/downloads/nagiosxi/scripts/NagiosXI 3. Make the script executable: # chmod +x NagiosXI-DNX.sh 4. Run the script in client mode #./NagiosXI-DNX.sh -c 5. Repeat steps 1-4 for each slave system. 6. Repeat steps 1-3 on the master Nagios server. 7. Run the script in server mode, optionally enabling automatic synchronization

17. 17 © Bull, 2012 Using DNX Of course it’s not that easy : Modify the script to run under Debian, 206c206 < # iptables -I INPUT -p udp --dport 12480:12482 -j ACCEPT --- > iptables -I INPUT -p udp --dport 12480:12482 -j ACCEPT 246c246 < wget -c $DOWNLOAD_URL -o dnx-$DNX_VERSION.tar.gz --- > wget -c $DOWNLOAD_URL

18. 18 © Bull, 2012 Using DNX

19. 19 © Bull, 2012 Demonstration First the Raspberry Pi running Nagios & DNX Oh – just one more thing…..

20. 20 © Bull, 2012 Futures & ‘Blue Sky thinking’ No limits to the possible uses for the RaspberryPI: Remember it has a GPIO output capability so…. For example true ‘traffic light displays’

21. 21 © Bull, 2012 Raspberry Pi, Nagios & Traffic Lights

22. 22 © Bull, 2012 RaspberryPi, Nagios & Traffic Lights

23. 23 © Bull, 2012 Futures & ‘Blue Sky thinking’ No limits to the possible uses for the RaspberryPI: Rolling text displays Digital Signage – Screenly-ose (on github.com)

24. 24 © Bull, 2012 Futures & ‘Blue Sky thinking’ 3D image of Tera 100 You could build a supercomputer like this

25. 25 © Bull, 2012 Futures & ‘Blue Sky thinking’ Iridis-pi But with Raspberry PI it might look like this – 64 nodes using Message Passing Interface Futures & ‘Blue Sky thinking

26. 26 © Bull, 2012 Futures & ‘Blue Sky thinking’ Iridis-pi Pair of Raspberry PI compute nodes in their Lego racking enclosure Futures & ‘Blue Sky thinking

27. 27 © Bull, 2012 Futures & ‘Blue Sky thinking’ How about adding a simple PBX to your current Nagios set-up? Or just two lines that tell you something ?

28. 28 © Bull, 2012 Futures & ‘Blue Sky thinking’ Take data from a weather station and post Twitter feeds & web site info

29. 29 © Bull, 2012 Conclusions For $35 this is a ‘fire & forget’ solution Quite capable of monitoring SME’s and with DNX support even larger environments Possibly the easiest way to drive / monitor exotic devices Only limited by your imagination

30. 30 © Bull, 2012 Questions

31. 31 © Bull, 2012

32. 32 © Bull, 2012

33. 33 © Bull, 2012 Standard slide with title, text over two columns First level text Second level text – Third level text  Fourth level text First level text Second level text – Third level text  Fourth level text

34. 34 © Bull, 2012 Colour palette R41 V41 B41 R95 V95 B95 R178 V178 B178 R255 V204 B102 R0 V128 B0 R119 V185 B0 R151 V191 B13 R182 V0 B34 R238 V134 B0 R96 V52 B129 R0 V117 B182 BOOST coloursCore colours

35. 35 © Bull, 2012 Click to add title click to add text

36. 36 © Bull, 2012 Standard slide with image Le cloud by Bull logo

37. 37 © Bull, 2012 Standard slide with title and image 3D image of Tera 100