Nagios Support Forum

Posted: **Wed Feb 17, 2016 9:20 pm**

If the passive checks being received from NCPA are every 300 seconds (5 minutes) your freshness threshold is also 300.

It might be better to increase the freshness threshold to say 600 as I can see that there may be some scheduling overlap.

Posted: **Wed Feb 17, 2016 10:03 pm**

so, i think i've done some advance

maybe it's ok that files in checkresults are results and thats the reason they dont stay in that directory? and nagios work with this results and moving them to others files?

i've change my service description to "memoria" so its more easy to search in files.
when ncpa sends messages to my nagios server it put the messages on checkresults directory.

when execute grep -r memoria /usr/local/nagios
first is the log who is telling me that "memoria" don't receivie any passive_check so it will execute dummy check

/usr/local/nagios/var/nagios.log:[1455761533] Warning: The results of service 'memoria' on host '192.168.56.1' are stale by 0d 0h 1m 0s (threshold=0d 0h 8m 0s). I'm forcing an immediate check of the service.
again log showing dummy check
/usr/local/nagios/var/nagios.log:[1455761533] SERVICE ALERT: 192.168.56.1;memoria;CRITICAL;SOFT;1;CRITICAL: CRITICAL: No se han recibido resultados en tiempo

/usr/local/nagios/var/objects.precache: service_description memoria
/usr/local/nagios/var/objects.cache: service_description memoria

both files shows

Code: Select all

define service {
        host_name       192.168.56.1
        service_description     memoria
        check_period    24x7
        check_command   sin_resultados
        contact_groups  admins
        notification_period     24x7
        initial_state   o
        importance      0
        check_interval  10.000000
        retry_interval  2.000000
        max_check_attempts      3
        is_volatile     1
        parallelize_check       1
        active_checks_enabled   0
        passive_checks_enabled  1
        obsess  0
        event_handler_enabled   1
        low_flap_threshold      0.000000
        high_flap_threshold     0.000000
        flap_detection_enabled  1
        flap_detection_options  a
        freshness_threshold     480
        check_freshness 1
        notification_options    r,w,u,c
        notifications_enabled   1
        notification_interval   60.000000
        first_notification_delay        0.000000
        stalking_options        n
        process_perf_data       1
        notes_url       /webcip/doc/doc.php?title=$HOSTNAME$_$SERVICEDESC$
        retain_status_information       1
        retain_nonstatus_information    1
        }

/usr/local/nagios/var/status.dat: service_description=memoria

Code: Select all

servicestatus {
        host_name=192.168.56.1
        service_description=memoria
        modified_attributes=0
        check_command=sin_resultados
        check_period=24x7
        notification_period=24x7
        check_interval=10.000000
        retry_interval=2.000000
        event_handler=
        has_been_checked=1
        should_be_scheduled=0
        check_execution_time=0.002
        check_latency=0.070
        check_type=0
        current_state=2
        last_hard_state=0
        last_event_id=0
        current_event_id=107
        current_problem_id=37
        last_problem_id=0
        current_attempt=1
        max_attempts=3
        state_type=0
        last_state_change=1455761533
        last_hard_state_change=1455761533
        last_time_ok=1455761533
        last_time_warning=0
        last_time_unknown=0
        last_time_critical=0
        plugin_output=CRITICAL: CRITICAL: No se han recibido resultados en tiempo
        long_plugin_output=
        performance_data=
        last_check=1455761533
        next_check=1455761653
        check_options=0
        current_notification_number=0
        current_notification_id=0
        last_notification=0
        next_notification=0
        no_more_notifications=0
        notifications_enabled=1
        active_checks_enabled=0
        passive_checks_enabled=1
        event_handler_enabled=1
        problem_has_been_acknowledged=0
        acknowledgement_type=0
        flap_detection_enabled=1
        process_performance_data=1
        obsess=0
        last_update=1455762012
        is_flapping=0
        percent_state_change=0.00
        scheduled_downtime_depth=0
        }

/usr/local/nagios/var/nagios.tmpHxiQfe: service_description=memoria

No such file or directory

/usr/local/nagios/etc/objects/mipc.cfg: service_description memoria

define service{
use generic-service
host_name 192.168.56.1
service_description memoria
check_command sin_resultados
passive_checks_enabled 1
active_checks_enabled 0
check_freshness 2
freshness_threshold 480
is_volatile 1
parallelize_check 1
obsess_over_service 0

}

i don't unerstand exactly how this work but it didn't look like there is anything wrong...

and if i submit a passive check results from the nagios cgi it works ok.

[root@localhost nagios]# grep -r test_check_result /usr/local/nagios
/usr/local/nagios/var/nagios.log:[1455762716] EXTERNAL COMMAND: PROCESS_SERVICE_CHECK_RESULT;192.168.56.1;memoria;0;test_check_result|
/usr/local/nagios/var/nagios.log:[1455762716] PASSIVE SERVICE CHECK: 192.168.56.1;memoria;0;test_check_result
/usr/local/nagios/var/status.dat: plugin_output=test_check_result

but i don't get the same result when search for the passive check sended from ncpa

read in some forum that status.dat must be nagios:apache (actually nagios:nagios) but don't known where configure that since status.dat is removed when nagios restarted so i've added user apache to group nagios but still can't receive passive check.

Posted: **Wed Feb 17, 2016 10:05 pm**

Box293 wrote:If the passive checks being received from NCPA are every 300 seconds (5 minutes) your freshness threshold is also 300.

It might be better to increase the freshness threshold to say 600 as I can see that there may be some scheduling overlap.

thanks. change it but still the same

Posted: **Wed Feb 17, 2016 11:05 pm**

The problem, as usual, was the lack of reading the documentation. In this case, the simple and short documentation of /usr/local/nrdp/server/config.inc.php, the part that says :
// the name of the system group that has write permissions to the external command file
// this group is also used to set file permissions when writing bulk commands or passive check results
// NOTE: both the Apache and Nagios users must be a member of this group
$cfg["nagios_command_group"]="nagcmd";

i've added nagios user to nagcmd group and passive checks start working !!!

I'm really grateful to you. you have made me think and run many tests that allowed me to learn and know more about nagios

I'm really grateful with you guys. You've made me think a lot and run a lots of test that allowed me to learn and know more about Nagios.

Thanks!

oh, and sorry for my terrible english x)

Posted: **Thu Feb 18, 2016 10:36 am**

We're glad to help! Thanks for sharing your answer as well.

I'll go ahead and close this thread out now, but feel free to open a new one if you ever need assistance in the future.

Nagios Support Forum

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Problem solved!

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