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The All-in-One Nagios Solution -

The All-in-One Nagios Solution - . 2 nd October 2013. Dave Williams. Technical Architect. Agenda. Background The Raspberry Pi The Raspberry Pi Nagios Recipe All-in-One Demonstration Futures & ‘Blue Sky thinking’ Questions. Background. UK based Mainframe (IBM & Honeywell)

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The All-in-One Nagios Solution -

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  1. The All-in-One Nagios Solution - • 2ndOctober 2013 • Dave Williams • Technical Architect

  2. Agenda • Background • The Raspberry Pi • The Raspberry Pi Nagios Recipe • All-in-One • Demonstration • Futures & ‘Blue Sky thinking’ • Questions

  3. Background • UK based • Mainframe (IBM & Honeywell) • Unix (HP-UX,AIX, Solaris) • Linux (RedHat, SLES, Debian) • Network (CASE, 3COM, CISCO) • Working for Bull • French Computer Manufacturer • Mainframes, Unix, HPC, Security, Managed Services, Advisory Services

  4. Background • System Monitoring • OpenView • Netview • Open Master • Open Source Monitoring • NetSaint on AIX • Nagios

  5. 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.

  6. The Raspberry Pi • Raspberry Pi’s are nearly everywhere • http://rastrack.co.uk

  7. How big is yours ?

  8. The All-in-One

  9. This is probably big enough

  10. The Raspberry Pi

  11. Raspberry Pi • Because it is a 5V DC device it can be run from a small battery pack – giving the ability to smooth incoming power and also prevent power interruptions. • The SME monitor can survive power outages even when UPS’ are not deployed or are confined to essential equipment. • Open up possibilities of using Out of Band alerts for environmental outages – using a real mobile phone for SMS text alerting would mean that both the Raspberry Pi and the mobile phone could continue to work during a total power loss.

  12. Raspberry Pi • An inexpensive way of powering your Raspberry Pi

  13. Raspberry Pi • Something more elegant to act as a real UPS

  14. The Raspberry Pi Nagios Recipe • Nagios Instance • 3.5.2 • 4.0.0 • Apache2 • Asterix • Motion

  15. All-in-One Alerting

  16. Asterix Configuration • define command{ • command_name notify-service-by-phone • command_line /usr/local/bin/notify-by-phone.sh $CONTACTADDRESS2$ "'This is a Nagios Service alert type $NOTIFICATIONTYPE$. Nagios Service Alarm. $HOSTNAME$ has a problem with $SERVICEOUTPUT$. The problem is $SERVICESTATE$.'" "'$NOTIFICATIONTYPE$:$SERVICEDESC$:$HOSTNAME$:$SERVICESTATE$:$SERVICEOUTPUT$'" $SERVICEEVENTID$ • }

  17. Asterix Configuration • /usr/local/bin/notify-by-phone.sh • #!/bin/bash • channel=$1 • alarmtext=$2 • alarmsub=$3 • alarmid=$4 • cd /tmp • echo $alarmtext > alarm_$alarmid.txt • echo $alarmsub > sub_$alarmid.txt • echo $alarmsub >> alarm_$alarmid.txt

  18. Asterix Configuration • echo 'Press 1 to repeat this message, or press 2 to acknowledge the alert.' >> alarm_$alarmid.txt • /usr/bin/text2wave -o alarm_$alarmid.wav alarm_$alarmid.txt • /usr/bin/soxalarm_$alarmid.wav -r 8000 alarm_$alarmid.ul • /bin/mv -f alarm_$alarmid.ul alarm_$alarmid.ulaw • /bin/rm alarm_$alarmid.wav

  19. Asterix Configuration echo "Channel: $channel • MaxRetries: 2 • RetryTime: 60 • WaitTime: 30 • Context: alarm • Extension: 9999 • Priority: 1 • Set: alarmid=$alarmid" > alarm_$alarmid.call /bin/chmod 777 alarm_$alarmid.call /usr/bin/sudo /bin/mv alarm_$alarmid.call /var/spool/asterisk/outgoing

  20. Asterix Configuration – extension.conf • [alarm] • exten => 9999,1,Answer • exten => 9999,2,NoOp(alarmid: ${alarmid}) • exten => 9999,3,BackGround(/tmp/alarm_${alarmid}) • exten => 9999,4,WaitExten(15) • exten => 9999,5,Hangup() • exten => _1,1,Goto(alarm,9999,3) • exten => _2,1,System(/usr/bin/sudo /bin/cp /tmp/sub_${alarmid}.txt /home/nagios/tmp/) • exten => _2,2,System(/usr/bin/sudo /home/nagios/start.pl ${alarmid}) • exten => _2,3,Background(/usr/local/share/sounds/HAL_goodbye) • exten => _2,4,Hangup()

  21. AsterixConfiguratiosip.conf • [voipfone] • type=peer • secret=????? • username=NNNNNNNN • fromuser=NNNNNNNN • fromdomain=sip.voipfone.net • host=sip.voipfone.net • insecure=very • dtmfmode= rfc2833 • context=fromvoipfone # inbound calls falls in this context of dialplan

  22. Asterix results • 'This is a Nagios Service alert type CUSTOM. Nagios Service Alarm. localhost has a problem with DISK OK - free space: / 1337 MB (38% inode=67%):. The problem is OK.‘ • Press 1 to repeat this message, or press 2 to acknowledge the alert.

  23. Asterix driven acknowledgement

  24. Motion – motion.conf • ; on_event_start value • on_event_start cd /etc/motion/scripts && send_nsca -H localhost -c send_nsca.cfg< passive_camera_warning • Uses send_nsca to send standard alert: • File: passive_camera_warning contains : • localhost Camera Motion Detection 1 WARNING: Motion detected

  25. All-in-One • Demonstration • Viewed using Midori browser • Memory before X & Browser total used free shared buffers cached Mem: 383972 146680 237292 0 16300 79924 -/+ buffers/cache: 50456 333516 Swap: 102396 0 102396 • Memory after X & Browser total used free shared buffers cached Mem: 383972 246860 137112 0 23120 129804 -/+ buffers/cache: 93936 290036 Swap: 102396 0 102396

  26. Futures & ‘Blue Sky thinking’ • The All-in-One commercially could cost less than $1999 • Including all equipment, a days installation / configuration and a limited number (3-5) calls to a helpdesk. • Small & Medium enterprises could have their own system monitors with alerting and visual displays for less than a cost of a small rack server. • Easily extend to Environment Monitoring • Possible European offer by Bull as ‘Vision-Pi’ as part of their Vision Services offer.

  27. Futures & ‘Blue Sky thinking’ • Still more possibilities • Can Nagvis or NagiosTV be implemented on the All-in-One • Can Nagios XI be built and be practical on the All-in-One. • Will the sizing & performance be practical ? • Can a suitable licencing scheme be worked out with Ethan for ARM ? • What other monitoring scenarios can be added ?

  28. Environment Monitoring • Using a 1-wire sensor DS18B20 • Raspberry Pi already has kernel modules for this • t=23062, that is 23 degrees Centigrade

  29. Fancy something bigger ?

  30. Raspberry Pi Development System • Motorola AtrixLapDock & a couple of adapters

  31. Closing Thoughts • Disruption – price / availability / capability • Hoover – the brand for Vacuum Cleaners • Phillips – name for Cross Head screwdrivers • Nagios – the name for system monitors

  32. Questions ?

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