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Nagios at UCAR
Pete Siemsen
March 20, 2007
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What is Nagios?
• Free network monitoring tool
• Open source
• Comes in pieces - use what you need
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Where is Nagios?
• Nagios runs on nagman, a dedicated server in ML-29– 1U PC– Debian Linux
• Backup machine exists– Not configured– Will be installed at Foothills
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Who uses Nagios?
• Anyone with a web browser and a Nagios account– NOC staff– Pete, David, Teresa, Scot, Jeff
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What does Nagios do?
• Monitors 331 network devices
• Monitors HMTL on access points
• Monitors BGP on routers
• Makes noises in the NOC
• Links to web pages with instructions
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What’s good about Nagios?
• It’s conceptually simple
• It handles the load
• It has a web interface
• It’s extensible
• It’s not overly noisy
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What’s bad about Nagios?
• Lots of configuration
• No discovery
• Manual network hierarchy
• Doesn’t understand multihomed devices
• Limited support for SNMP
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Demo…