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Chapter 10: Nagios Integration
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10.3.2 Enable NRPE Monitoring
Figure 10-5. NRPE monitoring structure.
Enabling NRPE allows you to execute plug-ins (such as check_tcp and check_ping) on the remote Console server to monitor serial or network
attached remote servers. This will offload CPU load from the upstream Nagios monitoring machine. This is especially valuable if you are monitoring
hundreds or thousands of hosts. To enable NRPE:
Select System: Nagios and check NRPE Enabled
Enter the details for the user connection to the upstream Nagios monitoring server and again refer to the sample Nagios configuration example
below for details about how to configure specific NRPE checks.
By default, the console server will accept a connection between the upstream Nagios monitoring server and the NRPE server with SSL encryption,
without SSL, or tunneled through SSH. The security for the connection is configured at the Nagios server.
10.3.3 Enable NSCA Monitoring
Figure 10-6. NCSA monitoring structure.
NSCA is the mechanism that allows you to send passive check results from the remote console server to the Nagios daemon running on the
monitoring server. To enable NSCA:
Select System: Nagios and check NSCA Enabled.
Select the Encryption to be used from the drop down menu, then enter a Secret password and specify a check Interval.
Nagios
check_
nrpe
Nagios monitoring host Remote Console server
NRPE
Remote managed devices
Serial
Network
Nagios
NSCA
Nagios monitoring host Remote Console server Remote managed devices
Tunneled SSH
Program/script send_ncsa
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