incredible disappearing host

Mitchell K. Smith mksmith at pa.eplus.com
Fri Apr 18 21:50:39 CEST 2003


Greetings all.
I am running Nagios 1.0,  RH Linux 7.3, Compaq DL360 1.2GHz

Nagios has been working fine for quite a long while. Recently we added about 30 additional servers with two services each to monitor. There is a total of 62 hosts and 125 services being monitored. In addition, I am also running MRTG/RRDTool on the same machine and it's gathering data from something like 800-1000 interfaces. The systems is getting fairly busy.

What happens is this. I added a new server and 3 services to be monitored. When I start Nagios, the new server will sometimes not appear on the hosts or services screen. Doing a view config > hosts it's definately there and is configured the same as many other servers. Restarting Nagios or refreshing the browser will sometimes bring it back but it will eventually disappear again. This happens from multiple browsers or clients. Has anyone seen anything like this before?
Weird.

Thanks for the help.

Mitchell K. Smith


Host definition:
# 'hpov00' host definition
define host{
        use                     generic-host
        host_name               hpov00
        alias                   HP OpenView server
        address                 172.31.9.50
        check_command           check-host-alive
        max_check_attempts      10
        notification_interval   120
        notification_period     24x7
        notification_options    d,u,r
        }

Service definitions:
# Service definition hpov00 - PING      
define service{
        use                             generic-service         ; Name of service template to use
        
        host_name                       hpov00
        service_description             PING
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              3
        normal_check_interval           5   
        retry_check_interval            1
        contact_groups                  nt-admins
        notification_interval           240
        notification_period             24x7
        notification_options            w,u,c,r
        check_command                   check_ping!200.0,20%!500.0,60%
        }
        
# Service definition hpov00 - HP OpenView Process Manager
define service{
        use                             generic-service         ; Name of service template to use

        host_name                       hpov00
        service_description             HP OpenView Process Manager
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              3
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  nt-admins
        notification_interval           240
        notification_period             24x7
        notification_options            w,u,c,r
        check_command                   check_nt_service!"HP OpenView Process Manager"
        }

# Service definition hpov00 - SNMP EMANATE Master Agent
define service{
        use                             generic-service         ; Name of service template to use

        host_name                       hpov00
        service_description             SNMP EMANATE Master Agent
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              3
        normal_check_interval           5
        retry_check_interval            1
        contact_groups                  nt-admins
        notification_interval           240
        notification_period             24x7
        notification_options            w,u,c,r
        check_command                   check_nt_service!EMANATE
        }



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