Embedding Nagios in the
Raspberry Pi
26th September
2012
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Dave Williams
Lead Technical Architect
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Agenda
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Agenda
Background
The Raspberry Pi
The Raspberry Pi Nagios Recipe
Using DNX on the Raspberry Pi
Demonstration
Futures & ‘Blue Sky thinking’
Conclusion
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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
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Background
System Monitoring
OpenView
Netview
Open Master
Open Source Monitoring
NetSaint on AIX
Nagios
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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, wordprocessing and games. It also plays
high-definition video.
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The Raspberry Pi
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The Raspberry Pi
Raspberry Pi’s are nearly everywhere
http://rastrack.co.uk
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The Raspberry Pi
The demo / sample system is running Debian – Squeeze
Soon to be updated to Wheezy
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The Raspberry Pi Nagios Recipe
See
http://exchange.nagios.org/directory/Documentation/NagiosCore-Documentation/Nagios-and-Raspberry-PI/details
Yes it’s already in the Nagios Core documentation set !
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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 libpng12dev 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
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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
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
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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
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 –withhtmurl=/nagios/ –with-nagios-user=nagios –with-nagiosgroup=nagios –with-command-group=nagios
And then make:
root@raspberrypi:/tmp/nagios# make all
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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
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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
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Using DNX
1.Download the automated installation script to the /tmp
directory:
# cd /tmp
2. # wget
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
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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
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Using DNX
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Demonstration
First the Raspberry Pi running Nagios & DNX
Oh – just one more thing…..
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Futures & ‘Blue Sky thinking’
No limits to the possible uses for the RaspberryPI:
Remember it has a GPIO output capability so….
•
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For example true ‘traffic light displays’
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Raspberry Pi , Nagios & Traffic Lights
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RaspberryPi, Nagios & Traffic Lights
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Futures & ‘Blue Sky thinking’
No limits to the possible uses for the RaspberryPI:
•
•
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Rolling text displays
Digital Signage – Screenly-ose (on github.com)
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Futures & ‘Blue Sky thinking’
3D image of Tera 100
You could build a supercomputer like this
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Futures & ‘Blue Sky thinking’
Futures & ‘Blue Sky thinking
Iridis-pi
But with Raspberry PI it might look like this –
64 nodes using Message Passing Interface
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Futures & ‘Blue Sky thinking’
Futures & ‘Blue Sky thinking
Iridis-pi
Pair of Raspberry PI compute nodes in their Lego racking enclosure
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Futures & ‘Blue Sky thinking’
How about adding a simple PBX to your current Nagios set-up?
Or just two lines that tell you something ?
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Futures & ‘Blue Sky thinking’
Take data from a weather station and post Twitter feeds & web
site info
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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
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Questions
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Colour palette
Core colours
BOOST colours
R178 V178 B178
R95 V95 B95
R41 V41 B41
R0 V117 B182
R96 V52 B129
R151 V191 B13
R119 V185 B0
R0 V128 B0
R238 V134 B0
R182 V0 B34
R255 V204 B102
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Click to add title
click to add text
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Le cloud by Bull logo
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Standard slide with title and image
3D image of Tera 100
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