Nagios response time

[billperrotta]

We have been noticing that it takes a while after a server goes offline to appear red in the web console.

Not sure what controls this or if there is a way to make nagios show up red quicker after a server goes offline?

[abrist]

There are two things that will effect the web UI responsiveness to state changes:
1. Check interval and where in the scheduled check that the box fails. If the interval is 5 minutes, and the server goes down a few moments after the check, nagios will not know that the host is down until the next check, which could approach the check_interval time.
2. The web UI refresh rate. By default, the frontend should refresh every 30 seconds. This time can be reduced, but too low of settings or too many users will lead to excessive db queries.

The first issue can be mitigated by using passive checks like nsca/snmp traps as passive checks are event driven and do not update on an interval.

[billperrotta]

the excsvc.cfg file says http interval is 30. What is it safe to set it to?
Will this make the alert show up quicker if the server goes down?

[abrist]

the excsvc.cfg file says http interval is 30. What is it safe to set it to

excsvc.cfg? Could you post this file? I would guess that you may have the check_interval for the check set to 30 minutes. But without seeing the file, this is but conjecture.

[billperrotta]

Code: Select all

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     HTTP
        check_command           check_http
        notification_interval   30
}

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     HTTPS
        check_command           check_https
        notification_interval   30
}

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     POP
        check_command           check_pop
        notification_interval   30
}
"excsvc.cfg" 44L, 879C                                        1,9           Top
 

[billperrotta]

Only thing is I don't know if this file is only to exchange servers group or all servers?

[billperrotta]

maybe it is this file the notification interval is 60 at the bottom of this file

Code: Select all

define service{
7>        use                     generic-service
          hostgroup_name          corporate-servers,hotel-servers
          service_description     NSClient++ Version
          check_command           check_nt!CLIENTVERSION
          notification_interval   0
  }

  define service{
          use                     generic-service
          hostgroup_name          corporate-servers,hotel-servers
          service_description     Uptime
          check_command           check_nt!UPTIME
          notification_interval   0
  }

  define service{
          use                     generic-service
8>        hostgroup_name          corporate-servers,hotel-servers
          service_description     CPU Load
          check_command           check_nt!CPULOAD!-l 5,80,90
0>}

  define service{
          use                     generic-service
          hostgroup_name          corporate-servers,hotel-servers
          service_description     Memory Usage
          check_command           check_nt!MEMUSE!-w 80 -c 90
  }

  define service{
          use                     generic-service
          hostgroup_name          corporate-servers,hotel-servers
          service_description     W3SVC
          check_command           check_nt!SERVICESTATE!-d SHOWALL -l W3SVC
  }

  define servicegroup{
          servicegroup_name       drivespace
          alias                   Drive Space
  }
{>
(>define serviceescalation{
          hostgroup_name          corporate-servers,hotel-servers
          servicegroup_name       drivespace
          contact_groups          admins
          first_notification      1
          last_notification       0
          notification_interval   60
          escalation_options      c
4>}
"winsvc.cfg" 51L, 1189C                                                                                                                                        51,1          All

[abrist]

All of those are using the standard check_interval of 5 minutes. Can you post the "generic-service" template?

[billperrotta]

yes if i knew where it might be?

[abrist]

Do you have a templates.cfg file in the nagios objects directory?