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10.4.4 Distributed Monitoring Usage Scenarios
Below are a number of distributed monitoring Nagios scenarios:
Local office
In this scenario, the console server is set up to monitor each managed device’s console. Configure it to make a number of checks, either actively at
the Nagios server's request, or passively at preset intervals, and submit the results to the Nagios server in a batch.
You can augment the console server at the local office site by one or more Intelligent Power Distribution Units (IPDUs) to remotely control the power
supply to the managed devices.
Figure 10-7. Using Nagios in a local office.
Remote site
In this scenario, configure the console server NRPE server or NSCA client to actively check configured services and upload the checks to the Nagios
server that’s waiting passively. You can also configure it to service NRPE commands to perform checks on demand.
In this situation, the console server will perform checks based on both serial and network access.
Figure 10-8. Using Nagios in a remote site.
Network checks over Ethernet
Serial checks over RS-232
Power monitoring and manipulaton via IPDU
Console
server
IPDU
Hosts
Network checks over Internet
Serial checks over RS-232
Results updated to Nagios via NSCA
Console
server
Modem
Modem
Firewall
Outgoing connections only
Internet
Nagios