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Warning: Service 'Certificate' on host 'web.domain.com' has a notification interval less than its check interval! Notifications are only re-sent after checks are made, so the effective notification interval will be that of the check interval.
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/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfgCode: Select all
define service{
use generic-service
host_name web.domain.com
normal_check_interval 43200 ; Check the service every month under normal conditions
service_description Certificate
check_command check_http!-H web.domain.com -S -C 90
}Basically having your notification lower than your check can cause issues, and you will need to adjust it up accordingly.the reason this happens is that nagios can not send a notification based on an "old" data , the notification is relevant to the current status and that is related to the latest check. now if your check interval is smaller then the notification , that means that nagios can do more checks and then send the alert on the latest data .
but if it is the other way around - it means that the alert sent might be based on out-of-date date and hence there is a strong possibility of a "false-positive" and nagios is reminding you of that possibility and also refrains from sending messages if it does not have a more current check .