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• Adding or removing a host to/from monitoring
• Adding a new hostgroup

Adding or removing a host to/from monitoring

• Log in to nagman
• Go to the NCAR config control directory

  cd to /etc/nagios2/hosts

• Edit the hosts-xxx.txt file that corresponds to the group that your new host belongs in.
• Add/remove the host to/from the file.
• Generate a new set of config files:

  generate.sh

• Copy the new config files to the Nagios config directory:

  mv output-files/* ../ncar.d

• Check that the configs are all still legal with this command:

  /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

• Restart the Nagios process:
  • Use a web browser to log in to Nagios
  • Click on Process Info
  • Click on Restart the Nagios process
  • Click on Commit
• If you're adding a host, the above steps will generate a new web page in /var/www/noc/ for the host. Consider adding a xxx-description.shtml or xxx-instructions.shtml page to enhance the information about the host.

Adding a new hostgroup

• Log in to nagman
• Go to the NCAR config control directory

  cd to /etc/nagios2/hosts

• Create a new hosts-xxx.txt file.
• Add a new line to generate.sh.
• Add the hostgroup to /etc/nagios2/ncar.d/ncar-hostgroups.cfg
• Follow the steps in the last section starting with "Generate a new set of config files."