Nagios

Why Monitoring
Numerous Amount of Servers are assigned to a System Administrator
Each Server's role is different
Many servers run 24x7 with mission critical applications

Planning
What and How to Monitor
Is It beneficial(Over monitor, Alert)
Who is asking?
Change of Requirements
Can you Monitor Servers?
Can you Separate alert groups, Can you send alert when something happens
Can you Exclude 30 min from Monitoring, Can you monitor Oracle access, can you .....

Software Selection
Scalability
Cost
Support
Requirement Analysis
Test version available?
Methods currently available

Available Software
Nagios
Groundworks
Cacti
Openview
HPSMH
Dell OpenManage with DRAC

Nagios
Well Documented
Customizable
Can Write plugins
sh, bash, perl, c c++
Easy Installation

Configuration Tips
Use Template
Use Hierarchal structure
Utilize open source project
Nagios Exchange
Find scripts that satisfy your needs

Configuration
nagios.cfg
checkcommands.cfg
contacts.cfg
contactgroups.cfg
hostgroups.cfg
resource.cfg
timeperiods.cfg

Cautions
Alert Management
Check Interval
How many Tries
Password injection
Maximum numbers
500 hosts, 3000 pollings

Nagios

by Eddy Mulyono on Jun 08, 2008

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Nagios — Presentation Transcript