NSCA + NSClient

[Mirza Dedic]

Hi,

I have NSCA configured on my Nagios host, and enabled the necessary plugins on NSClient++ to support NSCA, configure XINETD appropriately inside my NSClient config I have:

[NSCA Commands]
my_cpu_check=checkCPU warn=80 crit=90 time=20m time=10s time=4
my_mem_check=checkMem MaxWarn=80% MaxCrit=90% ShowAll type=page

This is just for testing, I also have in my nagios.cfg:

accept_passive_service_checks=1
accept_passive_host_checks=1

In my NSClient Log I can see:

2010-06-24 12:48:44: debug:modules\NSCAAgent\NSCAThread.cpp:205: Executing (from NSCA): my_cpu_check
2010-06-24 12:48:44: debug:NSClient++.cpp:1106: Injecting: checkCPU: warn=80, crit=90, time=20m, time=10s, time=4
2010-06-24 12:48:44: debug:NSClient++.cpp:1142: Injected Result: OK 'OK CPU Load ok.'
2010-06-24 12:48:44: debug:NSClient++.cpp:1143: Injected Performance Result: ''20m'=0%;80;90; '10s'=6%;80;90; '4'=0%;80;90; '
2010-06-24 12:48:44: debug:modules\NSCAAgent\NSCAThread.cpp:205: Executing (from NSCA): my_mem_check
2010-06-24 12:48:44: debug:NSClient++.cpp:1106: Injecting: checkMem: MaxWarn=80%, MaxCrit=90%, ShowAll, type=page
2010-06-24 12:48:44: debug:NSClient++.cpp:1142: Injected Result: OK 'OK: page file: 8.82G'
2010-06-24 12:48:44: debug:NSClient++.cpp:1143: Injected Performance Result: ''page file %'=45%;80;90; 'page file'=8.81G;15.6;17.59;0;19.5; '

What I want to know is, until now I have been using active checks, and for some servers I want to use passive_checks as well, so that the server updates Nagios.

If I have active checks defined within my Nagios installation such as:

define service{
        use                             generic-service
        host_name                       van-mail01
        service_description             D - Disk Space
        check_command                                     check_nt_disk!D!98!99
}

Can I modify this to also read from the passive_check, and what would my [NSCA Commands] definition look like? Does the first part have to reflect the service description?

How does the information coming from the NSCA Client get mapped to my configured checks?

Thank you.

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