Nagios

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Slides from Shohei Azuma's talk on CSU East Bay LUG on 2006-11-18

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Nagios

  1. 1. Why Monitoring <ul><li>Numerous Amount of Servers are assigned to a System Administrator </li></ul><ul><li>Each Server's role is different </li></ul><ul><li>Many servers run 24x7 with mission critical applications </li></ul>
  2. 2. Planning <ul><li>What and How to Monitor </li></ul><ul><li>Is It beneficial(Over monitor, Alert) </li></ul><ul><li>Who is asking? </li></ul><ul><li>Change of Requirements </li></ul><ul><ul><li>Can you Monitor Servers? </li></ul></ul><ul><ul><li>Can you Separate alert groups, Can you send alert when something happens </li></ul></ul><ul><ul><li>Can you Exclude 30 min from Monitoring, Can you monitor Oracle access, can you ..... </li></ul></ul>
  3. 3. Software Selection <ul><li>Scalability </li></ul><ul><li>Cost </li></ul><ul><li>Support </li></ul><ul><li>Requirement Analysis </li></ul><ul><li>Test version available? </li></ul><ul><li>Methods currently available </li></ul>
  4. 4. Available Software <ul><li>Nagios </li></ul><ul><ul><li>Groundworks </li></ul></ul><ul><li>Cacti </li></ul><ul><li>Openview </li></ul><ul><li>HPSMH </li></ul><ul><li>Dell OpenManage with DRAC </li></ul>
  5. 5. Nagios <ul><li>Well Documented </li></ul><ul><li>Customizable </li></ul><ul><li>Can Write plugins </li></ul><ul><ul><li>sh, bash, perl, c c++ </li></ul></ul><ul><li>Easy Installation </li></ul>
  6. 6. Configuration Tips <ul><li>Use Template </li></ul><ul><li>Use Hierarchal structure </li></ul><ul><li>Utilize open source project </li></ul><ul><ul><li>Nagios Exchange </li></ul></ul><ul><li>Find scripts that satisfy your needs </li></ul>
  7. 7. Configuration <ul><li>nagios.cfg </li></ul><ul><li>checkcommands.cfg </li></ul><ul><li>contacts.cfg </li></ul><ul><li>contactgroups.cfg </li></ul><ul><li>hostgroups.cfg </li></ul><ul><li>resource.cfg </li></ul><ul><li>timeperiods.cfg </li></ul>
  8. 8. Cautions <ul><li>Alert Management </li></ul><ul><li>Check Interval </li></ul><ul><li>How many Tries </li></ul><ul><li>Password injection </li></ul><ul><li>Maximum numbers </li></ul><ul><ul><li>500 hosts, 3000 pollings </li></ul></ul>

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